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externals/linux/include/ccapi_cpp/ccapi_hmac.h
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John Colvin 99c440f568 Add ccapi [header-only] lib to includes 
This is the open source crypto connector lib
2022-06-06 11:57:00 -04:00

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#ifndef INCLUDE_CCAPI_CPP_CCAPI_HMAC_H_
#define INCLUDE_CCAPI_CPP_CCAPI_HMAC_H_
// https://github.com/Yubico/yubico-c-client/blob/ykclient-2.15/hmac.c
/**************************** hmac.c ****************************/
/******************** See RFC 4634 for details ******************/
/*
* Description:
* This file implements the HMAC algorithm (Keyed-Hashing for
* Message Authentication, RFC2104), expressed in terms of the
* various SHA algorithms.
*/
//#include "sha.h"
/**************************** sha.h ****************************/
/******************* See RFC 4634 for details ******************/
#ifndef _SHA_H_
#define _SHA_H_
/*
* Description:
* This file implements the Secure Hash Signature Standard
* algorithms as defined in the National Institute of Standards
* and Technology Federal Information Processing Standards
* Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
* published on August 1, 2002, and the FIPS PUB 180-2 Change
* Notice published on February 28, 2004.
*
* A combined document showing all algorithms is available at
* http://csrc.nist.gov/publications/fips/
* fips180-2/fips180-2withchangenotice.pdf
*
* The five hashes are defined in these sizes:
* SHA-1 20 byte / 160 bit
* SHA-224 28 byte / 224 bit
* SHA-256 32 byte / 256 bit
* SHA-384 48 byte / 384 bit
* SHA-512 64 byte / 512 bit
*/
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <stdint.h>
#include <iomanip>
/*
* If you do not have the ISO standard stdint.h header file, then you
* must typedef the following:
* name meaning
* uint64_t unsigned 64 bit integer
* uint32_t unsigned 32 bit integer
* uint8_t unsigned 8 bit integer (i.e., unsigned char)
* int_least16_t integer of >= 16 bits
*
*/
namespace yubico {
#ifndef _SHA_enum_
#define _SHA_enum_
/*
* All SHA functions return one of these values.
*/
enum {
shaSuccess = 0,
shaNull, /* Null pointer parameter */
shaInputTooLong, /* input data too long */
shaStateError, /* called Input after FinalBits or Result */
shaBadParam /* passed a bad parameter */
};
#endif /* _SHA_enum_ */
/*
* These constants hold size information for each of the SHA
* hashing operations
*/
enum {
SHA1_Message_Block_Size = 64,
SHA224_Message_Block_Size = 64,
SHA256_Message_Block_Size = 64,
SHA384_Message_Block_Size = 128,
SHA512_Message_Block_Size = 128,
USHA_Max_Message_Block_Size = SHA512_Message_Block_Size,
SHA1HashSize = 20,
SHA224HashSize = 28,
SHA256HashSize = 32,
SHA384HashSize = 48,
SHA512HashSize = 64,
USHAMaxHashSize = SHA512HashSize,
SHA1HashSizeBits = 160,
SHA224HashSizeBits = 224,
SHA256HashSizeBits = 256,
SHA384HashSizeBits = 384,
SHA512HashSizeBits = 512,
USHAMaxHashSizeBits = SHA512HashSizeBits
};
/*
* These constants are used in the USHA (unified sha) functions.
*/
typedef enum SHAversion { SHA1, SHA224, SHA256, SHA384, SHA512 } SHAversion;
/*
* This structure will hold context information for the SHA-1
* hashing operation.
*/
typedef struct SHA1Context {
uint32_t Intermediate_Hash[SHA1HashSize / 4]; /* Message Digest */
uint32_t Length_Low; /* Message length in bits */
uint32_t Length_High; /* Message length in bits */
int_least16_t Message_Block_Index; /* Message_Block array index */
/* 512-bit message blocks */
uint8_t Message_Block[SHA1_Message_Block_Size];
int Computed; /* Is the digest computed? */
int Corrupted; /* Is the digest corrupted? */
} SHA1Context;
/*
* This structure will hold context information for the SHA-256
* hashing operation.
*/
typedef struct SHA256Context {
uint32_t Intermediate_Hash[SHA256HashSize / 4]; /* Message Digest */
uint32_t Length_Low; /* Message length in bits */
uint32_t Length_High; /* Message length in bits */
int_least16_t Message_Block_Index; /* Message_Block array index */
/* 512-bit message blocks */
uint8_t Message_Block[SHA256_Message_Block_Size];
int Computed; /* Is the digest computed? */
int Corrupted; /* Is the digest corrupted? */
} SHA256Context;
/*
* This structure will hold context information for the SHA-512
* hashing operation.
*/
typedef struct SHA512Context {
#ifdef USE_32BIT_ONLY
uint32_t Intermediate_Hash[SHA512HashSize / 4]; /* Message Digest */
uint32_t Length[4]; /* Message length in bits */
#else /* !USE_32BIT_ONLY */
uint64_t Intermediate_Hash[SHA512HashSize / 8]; /* Message Digest */
uint64_t Length_Low, Length_High; /* Message length in bits */
#endif /* USE_32BIT_ONLY */
int_least16_t Message_Block_Index; /* Message_Block array index */
/* 1024-bit message blocks */
uint8_t Message_Block[SHA512_Message_Block_Size];
int Computed; /* Is the digest computed? */
int Corrupted; /* Is the digest corrupted? */
} SHA512Context;
/*
* This structure will hold context information for the SHA-224
* hashing operation. It uses the SHA-256 structure for computation.
*/
typedef struct SHA256Context SHA224Context;
/*
* This structure will hold context information for the SHA-384
* hashing operation. It uses the SHA-512 structure for computation.
*/
typedef struct SHA512Context SHA384Context;
/*
* This structure holds context information for all SHA
* hashing operations.
*/
typedef struct USHAContext {
int whichSha; /* which SHA is being used */
union {
SHA1Context sha1Context;
SHA224Context sha224Context;
SHA256Context sha256Context;
SHA384Context sha384Context;
SHA512Context sha512Context;
} ctx;
} USHAContext;
/*
* This structure will hold context information for the HMAC
* keyed hashing operation.
*/
typedef struct HMACContext {
int whichSha; /* which SHA is being used */
int hashSize; /* hash size of SHA being used */
int blockSize; /* block size of SHA being used */
USHAContext shaContext; /* SHA context */
unsigned char k_opad[USHA_Max_Message_Block_Size];
/* outer padding - key XORd with opad */
} HMACContext;
/*
* Function Prototypes
*/
/* SHA-1 */
int SHA1Reset(SHA1Context *);
int SHA1Input(SHA1Context *, const uint8_t *bytes, unsigned int bytecount);
int SHA1FinalBits(SHA1Context *, const uint8_t bits, unsigned int bitcount);
int SHA1Result(SHA1Context *, uint8_t Message_Digest[SHA1HashSize]);
/* SHA-224 */
int SHA224Reset(SHA224Context *);
int SHA224Input(SHA224Context *, const uint8_t *bytes, unsigned int bytecount);
int SHA224FinalBits(SHA224Context *, const uint8_t bits, unsigned int bitcount);
int SHA224Result(SHA224Context *, uint8_t Message_Digest[SHA224HashSize]);
/* SHA-256 */
int SHA256Reset(SHA256Context *);
int SHA256Input(SHA256Context *, const uint8_t *bytes, unsigned int bytecount);
int SHA256FinalBits(SHA256Context *, const uint8_t bits, unsigned int bitcount);
int SHA256Result(SHA256Context *, uint8_t Message_Digest[SHA256HashSize]);
/* SHA-384 */
int SHA384Reset(SHA384Context *);
int SHA384Input(SHA384Context *, const uint8_t *bytes, unsigned int bytecount);
int SHA384FinalBits(SHA384Context *, const uint8_t bits, unsigned int bitcount);
int SHA384Result(SHA384Context *, uint8_t Message_Digest[SHA384HashSize]);
/* SHA-512 */
int SHA512Reset(SHA512Context *);
int SHA512Input(SHA512Context *, const uint8_t *bytes, unsigned int bytecount);
int SHA512FinalBits(SHA512Context *, const uint8_t bits, unsigned int bitcount);
int SHA512Result(SHA512Context *, uint8_t Message_Digest[SHA512HashSize]);
/* Unified SHA functions, chosen by whichSha */
int USHAReset(USHAContext *, SHAversion whichSha);
int USHAInput(USHAContext *, const uint8_t *bytes, unsigned int bytecount);
int USHAFinalBits(USHAContext *, const uint8_t bits, unsigned int bitcount);
int USHAResult(USHAContext *, uint8_t Message_Digest[USHAMaxHashSize]);
int USHABlockSize(enum SHAversion whichSha);
int USHAHashSize(enum SHAversion whichSha);
int USHAHashSizeBits(enum SHAversion whichSha);
/*
* HMAC Keyed-Hashing for Message Authentication, RFC2104,
* for all SHAs.
* This interface allows a fixed-length text input to be used.
*/
int hmac(SHAversion whichSha, /* which SHA algorithm to use */
const unsigned char *text, /* pointer to data stream */
int text_len, /* length of data stream */
const unsigned char *key, /* pointer to authentication key */
int key_len, /* length of authentication key */
uint8_t digest[USHAMaxHashSize]); /* caller digest to fill in */
/*
* HMAC Keyed-Hashing for Message Authentication, RFC2104,
* for all SHAs.
* This interface allows any length of text input to be used.
*/
int hmacReset(HMACContext *ctx, enum SHAversion whichSha, const unsigned char *key, int key_len);
int hmacInput(HMACContext *ctx, const unsigned char *text, int text_len);
int hmacFinalBits(HMACContext *ctx, const uint8_t bits, unsigned int bitcount);
int hmacResult(HMACContext *ctx, uint8_t digest[USHAMaxHashSize]);
#endif /* _SHA_H_ */
/*************************** sha-private.h ***************************/
/********************** See RFC 4634 for details *********************/
#ifndef _SHA_PRIVATE__H
#define _SHA_PRIVATE__H
/*
* These definitions are defined in FIPS-180-2, section 4.1.
* Ch() and Maj() are defined identically in sections 4.1.1,
* 4.1.2 and 4.1.3.
*
* The definitions used in FIPS-180-2 are as follows:
*/
#ifndef USE_MODIFIED_MACROS
#define SHA_Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
#define SHA_Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#else /* USE_MODIFIED_MACROS */
/*
* The following definitions are equivalent and potentially faster.
*/
#define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z))
#define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#endif /* USE_MODIFIED_MACROS */
#define SHA_Parity(x, y, z) ((x) ^ (y) ^ (z))
#endif /* _SHA_PRIVATE__H */
/**************************** sha1.c ****************************/
/******************** See RFC 4634 for details ******************/
/*
* Description:
* This file implements the Secure Hash Signature Standard
* algorithms as defined in the National Institute of Standards
* and Technology Federal Information Processing Standards
* Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
* published on August 1, 2002, and the FIPS PUB 180-2 Change
* Notice published on February 28, 2004.
*
* A combined document showing all algorithms is available at
* http://csrc.nist.gov/publications/fips/
* fips180-2/fips180-2withchangenotice.pdf
*
* The SHA-1 algorithm produces a 160-bit message digest for a
* given data stream. It should take about 2**n steps to find a
* message with the same digest as a given message and
* 2**(n/2) to find any two messages with the same digest,
* when n is the digest size in bits. Therefore, this
* algorithm can serve as a means of providing a
* "fingerprint" for a message.
*
* Portability Issues:
* SHA-1 is defined in terms of 32-bit "words". This code
* uses <stdint.h> (included via "sha.h") to define 32 and 8
* bit unsigned integer types. If your C compiler does not
* support 32 bit unsigned integers, this code is not
* appropriate.
*
* Caveats:
* SHA-1 is designed to work with messages less than 2^64 bits
* long. This implementation uses SHA1Input() to hash the bits
* that are a multiple of the size of an 8-bit character, and then
* uses SHA1FinalBits() to hash the final few bits of the input.
*/
//#include "sha.h"
//#include "sha-private.h"
/*
* Define the SHA1 circular left shift macro
*/
#define SHA1_ROTL(bits, word) (((word) << (bits)) | ((word) >> (32 - (bits))))
/*
* add "length" to the length
*/
static uint32_t addTemp1;
#define SHA1AddLength(context, length) \
(addTemp1 = (context)->Length_Low, (context)->Corrupted = (((context)->Length_Low += (length)) < addTemp1) && (++(context)->Length_High == 0) ? 1 : 0)
/* Local Function Prototypes */
static void SHA1Finalize(SHA1Context *context, uint8_t Pad_Byte);
static void SHA1PadMessage(SHA1Context *, uint8_t Pad_Byte);
static void SHA1ProcessMessageBlock(SHA1Context *);
/*
* SHA1Reset
*
* Description:
* This function will initialize the SHA1Context in preparation
* for computing a new SHA1 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA1Reset(SHA1Context *context) {
if (!context) return shaNull;
context->Length_Low = 0;
context->Length_High = 0;
context->Message_Block_Index = 0;
/* Initial Hash Values: FIPS-180-2 section 5.3.1 */
context->Intermediate_Hash[0] = 0x67452301;
context->Intermediate_Hash[1] = 0xEFCDAB89;
context->Intermediate_Hash[2] = 0x98BADCFE;
context->Intermediate_Hash[3] = 0x10325476;
context->Intermediate_Hash[4] = 0xC3D2E1F0;
context->Computed = 0;
context->Corrupted = 0;
return shaSuccess;
}
/*
* SHA1Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int SHA1Input(SHA1Context *context, const uint8_t *message_array, unsigned length) {
if (!length) return shaSuccess;
if (!context || !message_array) return shaNull;
if (context->Computed) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
while (length-- && !context->Corrupted) {
context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
if (!SHA1AddLength(context, 8) && (context->Message_Block_Index == SHA1_Message_Block_Size)) SHA1ProcessMessageBlock(context);
message_array++;
}
return shaSuccess;
}
/*
* SHA1FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*/
inline int SHA1FinalBits(SHA1Context *context, const uint8_t message_bits, unsigned int length) {
uint8_t masks[8] = {/* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
/* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
/* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
/* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE};
uint8_t markbit[8] = {/* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
/* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
/* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
/* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01};
if (!length) return shaSuccess;
if (!context) return shaNull;
if (context->Computed || (length >= 8) || (length == 0)) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
SHA1AddLength(context, length);
SHA1Finalize(context, (uint8_t)((message_bits & masks[length]) | markbit[length]));
return shaSuccess;
}
/*
* SHA1Result
*
* Description:
* This function will return the 160-bit message digest into the
* Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 19th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA-1 hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA1Result(SHA1Context *context, uint8_t Message_Digest[SHA1HashSize]) {
int i;
if (!context || !Message_Digest) return shaNull;
if (context->Corrupted) return context->Corrupted;
if (!context->Computed) SHA1Finalize(context, 0x80);
for (i = 0; i < SHA1HashSize; ++i) Message_Digest[i] = (uint8_t)(context->Intermediate_Hash[i >> 2] >> 8 * (3 - (i & 0x03)));
return shaSuccess;
}
/*
* SHA1Finalize
*
* Description:
* This helper function finishes off the digest calculations.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* sha Error Code.
*
*/
static void SHA1Finalize(SHA1Context *context, uint8_t Pad_Byte) {
int i;
SHA1PadMessage(context, Pad_Byte);
/* message may be sensitive, clear it out */
for (i = 0; i < SHA1_Message_Block_Size; ++i) context->Message_Block[i] = 0;
context->Length_Low = 0; /* and clear length */
context->Length_High = 0;
context->Computed = 1;
}
/*
* SHA1PadMessage
*
* Description:
* According to the standard, the message must be padded to an
* even 512 bits. The first padding bit must be a '1'. The last
* 64 bits represent the length of the original message. All bits
* in between should be 0. This helper function will pad the
* message according to those rules by filling the Message_Block
* array accordingly. When it returns, it can be assumed that the
* message digest has been computed.
*
* Parameters:
* context: [in/out]
* The context to pad
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* Nothing.
*/
static void SHA1PadMessage(SHA1Context *context, uint8_t Pad_Byte) {
/*
* Check to see if the current message block is too small to hold
* the initial padding bits and length. If so, we will pad the
* block, process it, and then continue padding into a second
* block.
*/
if (context->Message_Block_Index >= (SHA1_Message_Block_Size - 8)) {
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < SHA1_Message_Block_Size) context->Message_Block[context->Message_Block_Index++] = 0;
SHA1ProcessMessageBlock(context);
} else
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < (SHA1_Message_Block_Size - 8)) context->Message_Block[context->Message_Block_Index++] = 0;
/*
* Store the message length as the last 8 octets
*/
context->Message_Block[56] = (uint8_t)(context->Length_High >> 24);
context->Message_Block[57] = (uint8_t)(context->Length_High >> 16);
context->Message_Block[58] = (uint8_t)(context->Length_High >> 8);
context->Message_Block[59] = (uint8_t)(context->Length_High);
context->Message_Block[60] = (uint8_t)(context->Length_Low >> 24);
context->Message_Block[61] = (uint8_t)(context->Length_Low >> 16);
context->Message_Block[62] = (uint8_t)(context->Length_Low >> 8);
context->Message_Block[63] = (uint8_t)(context->Length_Low);
SHA1ProcessMessageBlock(context);
}
/*
* SHA1ProcessMessageBlock
*
* Description:
* This helper function will process the next 512 bits of the
* message stored in the Message_Block array.
*
* Parameters:
* None.
*
* Returns:
* Nothing.
*
* Comments:
* Many of the variable names in this code, especially the
* single character names, were used because those were the
* names used in the publication.
*/
static void SHA1ProcessMessageBlock(SHA1Context *context) {
/* Constants defined in FIPS-180-2, section 4.2.1 */
const uint32_t K[4] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6};
int t; /* Loop counter */
uint32_t temp; /* Temporary word value */
uint32_t W[80]; /* Word sequence */
uint32_t A, B, C, D, E; /* Word buffers */
/*
* Initialize the first 16 words in the array W
*/
for (t = 0; t < 16; t++) {
W[t] = ((uint32_t)context->Message_Block[t * 4]) << 24;
W[t] |= ((uint32_t)context->Message_Block[t * 4 + 1]) << 16;
W[t] |= ((uint32_t)context->Message_Block[t * 4 + 2]) << 8;
W[t] |= ((uint32_t)context->Message_Block[t * 4 + 3]);
}
for (t = 16; t < 80; t++) W[t] = SHA1_ROTL(1, W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16]);
A = context->Intermediate_Hash[0];
B = context->Intermediate_Hash[1];
C = context->Intermediate_Hash[2];
D = context->Intermediate_Hash[3];
E = context->Intermediate_Hash[4];
for (t = 0; t < 20; t++) {
temp = SHA1_ROTL(5, A) + SHA_Ch(B, C, D) + E + W[t] + K[0];
E = D;
D = C;
C = SHA1_ROTL(30, B);
B = A;
A = temp;
}
for (t = 20; t < 40; t++) {
temp = SHA1_ROTL(5, A) + SHA_Parity(B, C, D) + E + W[t] + K[1];
E = D;
D = C;
C = SHA1_ROTL(30, B);
B = A;
A = temp;
}
for (t = 40; t < 60; t++) {
temp = SHA1_ROTL(5, A) + SHA_Maj(B, C, D) + E + W[t] + K[2];
E = D;
D = C;
C = SHA1_ROTL(30, B);
B = A;
A = temp;
}
for (t = 60; t < 80; t++) {
temp = SHA1_ROTL(5, A) + SHA_Parity(B, C, D) + E + W[t] + K[3];
E = D;
D = C;
C = SHA1_ROTL(30, B);
B = A;
A = temp;
}
context->Intermediate_Hash[0] += A;
context->Intermediate_Hash[1] += B;
context->Intermediate_Hash[2] += C;
context->Intermediate_Hash[3] += D;
context->Intermediate_Hash[4] += E;
context->Message_Block_Index = 0;
}
/*************************** sha224-256.c ***************************/
/********************* See RFC 4634 for details *********************/
/*
* Description:
* This file implements the Secure Hash Signature Standard
* algorithms as defined in the National Institute of Standards
* and Technology Federal Information Processing Standards
* Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
* published on August 1, 2002, and the FIPS PUB 180-2 Change
* Notice published on February 28, 2004.
*
* A combined document showing all algorithms is available at
* http://csrc.nist.gov/publications/fips/
* fips180-2/fips180-2withchangenotice.pdf
*
* The SHA-224 and SHA-256 algorithms produce 224-bit and 256-bit
* message digests for a given data stream. It should take about
* 2**n steps to find a message with the same digest as a given
* message and 2**(n/2) to find any two messages with the same
* digest, when n is the digest size in bits. Therefore, this
* algorithm can serve as a means of providing a
* "fingerprint" for a message.
*
* Portability Issues:
* SHA-224 and SHA-256 are defined in terms of 32-bit "words".
* This code uses <stdint.h> (included via "sha.h") to define 32
* and 8 bit unsigned integer types. If your C compiler does not
* support 32 bit unsigned integers, this code is not
* appropriate.
*
* Caveats:
* SHA-224 and SHA-256 are designed to work with messages less
* than 2^64 bits long. This implementation uses SHA224/256Input()
* to hash the bits that are a multiple of the size of an 8-bit
* character, and then uses SHA224/256FinalBits() to hash the
* final few bits of the input.
*/
//#include "sha.h"
//#include "sha-private.h"
/* Define the SHA shift, rotate left and rotate right macro */
#define SHA256_SHR(bits, word) ((word) >> (bits))
#define SHA256_ROTL(bits, word) (((word) << (bits)) | ((word) >> (32 - (bits))))
#define SHA256_ROTR(bits, word) (((word) >> (bits)) | ((word) << (32 - (bits))))
/* Define the SHA SIGMA and sigma macros */
#define SHA256_SIGMA0(word) (SHA256_ROTR(2, word) ^ SHA256_ROTR(13, word) ^ SHA256_ROTR(22, word))
#define SHA256_SIGMA1(word) (SHA256_ROTR(6, word) ^ SHA256_ROTR(11, word) ^ SHA256_ROTR(25, word))
#define SHA256_sigma0(word) (SHA256_ROTR(7, word) ^ SHA256_ROTR(18, word) ^ SHA256_SHR(3, word))
#define SHA256_sigma1(word) (SHA256_ROTR(17, word) ^ SHA256_ROTR(19, word) ^ SHA256_SHR(10, word))
/*
* add "length" to the length
*/
static uint32_t addTemp2;
#define SHA224_256AddLength(context, length) \
(addTemp2 = (context)->Length_Low, (context)->Corrupted = (((context)->Length_Low += (length)) < addTemp2) && (++(context)->Length_High == 0) ? 1 : 0)
/* Local Function Prototypes */
static void SHA224_256Finalize(SHA256Context *context, uint8_t Pad_Byte);
static void SHA224_256PadMessage(SHA256Context *context, uint8_t Pad_Byte);
static void SHA224_256ProcessMessageBlock(SHA256Context *context);
static int SHA224_256Reset(SHA256Context *context, uint32_t *H0);
static int SHA224_256ResultN(SHA256Context *context, uint8_t Message_Digest[], int HashSize);
/* Initial Hash Values: FIPS-180-2 Change Notice 1 */
static uint32_t SHA224_H0[SHA256HashSize / 4] = {0xC1059ED8, 0x367CD507, 0x3070DD17, 0xF70E5939, 0xFFC00B31, 0x68581511, 0x64F98FA7, 0xBEFA4FA4};
/* Initial Hash Values: FIPS-180-2 section 5.3.2 */
static uint32_t SHA256_H0[SHA256HashSize / 4] = {0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19};
/*
* SHA224Reset
*
* Description:
* This function will initialize the SHA384Context in preparation
* for computing a new SHA224 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*/
inline int SHA224Reset(SHA224Context *context) { return SHA224_256Reset(context, SHA224_H0); }
/*
* SHA224Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int SHA224Input(SHA224Context *context, const uint8_t *message_array, unsigned int length) { return SHA256Input(context, message_array, length); }
/*
* SHA224FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*/
inline int SHA224FinalBits(SHA224Context *context, const uint8_t message_bits, unsigned int length) { return SHA256FinalBits(context, message_bits, length); }
/*
* SHA224Result
*
* Description:
* This function will return the 224-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 28th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*/
inline int SHA224Result(SHA224Context *context, uint8_t Message_Digest[SHA224HashSize]) { return SHA224_256ResultN(context, Message_Digest, SHA224HashSize); }
/*
* SHA256Reset
*
* Description:
* This function will initialize the SHA256Context in preparation
* for computing a new SHA256 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*/
inline int SHA256Reset(SHA256Context *context) { return SHA224_256Reset(context, SHA256_H0); }
/*
* SHA256Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*/
inline int SHA256Input(SHA256Context *context, const uint8_t *message_array, unsigned int length) {
if (!length) return shaSuccess;
if (!context || !message_array) return shaNull;
if (context->Computed) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
while (length-- && !context->Corrupted) {
context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
if (!SHA224_256AddLength(context, 8) && (context->Message_Block_Index == SHA256_Message_Block_Size)) SHA224_256ProcessMessageBlock(context);
message_array++;
}
return shaSuccess;
}
/*
* SHA256FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*/
inline int SHA256FinalBits(SHA256Context *context, const uint8_t message_bits, unsigned int length) {
uint8_t masks[8] = {/* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
/* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
/* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
/* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE};
uint8_t markbit[8] = {/* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
/* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
/* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
/* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01};
if (!length) return shaSuccess;
if (!context) return shaNull;
if ((context->Computed) || (length >= 8) || (length == 0)) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
SHA224_256AddLength(context, length);
SHA224_256Finalize(context, (uint8_t)((message_bits & masks[length]) | markbit[length]));
return shaSuccess;
}
/*
* SHA256Result
*
* Description:
* This function will return the 256-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 32nd element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*/
inline int SHA256Result(SHA256Context *context, uint8_t Message_Digest[]) { return SHA224_256ResultN(context, Message_Digest, SHA256HashSize); }
/*
* SHA224_256Finalize
*
* Description:
* This helper function finishes off the digest calculations.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* sha Error Code.
*/
static void SHA224_256Finalize(SHA256Context *context, uint8_t Pad_Byte) {
int i;
SHA224_256PadMessage(context, Pad_Byte);
/* message may be sensitive, so clear it out */
for (i = 0; i < SHA256_Message_Block_Size; ++i) context->Message_Block[i] = 0;
context->Length_Low = 0; /* and clear length */
context->Length_High = 0;
context->Computed = 1;
}
/*
* SHA224_256PadMessage
*
* Description:
* According to the standard, the message must be padded to an
* even 512 bits. The first padding bit must be a '1'. The
* last 64 bits represent the length of the original message.
* All bits in between should be 0. This helper function will pad
* the message according to those rules by filling the
* Message_Block array accordingly. When it returns, it can be
* assumed that the message digest has been computed.
*
* Parameters:
* context: [in/out]
* The context to pad
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* Nothing.
*/
static void SHA224_256PadMessage(SHA256Context *context, uint8_t Pad_Byte) {
/*
* Check to see if the current message block is too small to hold
* the initial padding bits and length. If so, we will pad the
* block, process it, and then continue padding into a second
* block.
*/
if (context->Message_Block_Index >= (SHA256_Message_Block_Size - 8)) {
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < SHA256_Message_Block_Size) context->Message_Block[context->Message_Block_Index++] = 0;
SHA224_256ProcessMessageBlock(context);
} else
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < (SHA256_Message_Block_Size - 8)) context->Message_Block[context->Message_Block_Index++] = 0;
/*
* Store the message length as the last 8 octets
*/
context->Message_Block[56] = (uint8_t)(context->Length_High >> 24);
context->Message_Block[57] = (uint8_t)(context->Length_High >> 16);
context->Message_Block[58] = (uint8_t)(context->Length_High >> 8);
context->Message_Block[59] = (uint8_t)(context->Length_High);
context->Message_Block[60] = (uint8_t)(context->Length_Low >> 24);
context->Message_Block[61] = (uint8_t)(context->Length_Low >> 16);
context->Message_Block[62] = (uint8_t)(context->Length_Low >> 8);
context->Message_Block[63] = (uint8_t)(context->Length_Low);
SHA224_256ProcessMessageBlock(context);
}
/*
* SHA224_256ProcessMessageBlock
*
* Description:
* This function will process the next 512 bits of the message
* stored in the Message_Block array.
*
* Parameters:
* context: [in/out]
* The SHA context to update
*
* Returns:
* Nothing.
*
* Comments:
* Many of the variable names in this code, especially the
* single character names, were used because those were the
* names used in the publication.
*/
static void SHA224_256ProcessMessageBlock(SHA256Context *context) {
/* Constants defined in FIPS-180-2, section 4.2.2 */
static const uint32_t K[64] = {0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01,
0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08,
0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};
int t, t4; /* Loop counter */
uint32_t temp1, temp2; /* Temporary word value */
uint32_t W[64]; /* Word sequence */
uint32_t A, B, C, D, E, F, G, H; /* Word buffers */
/*
* Initialize the first 16 words in the array W
*/
for (t = t4 = 0; t < 16; t++, t4 += 4)
W[t] = (((uint32_t)context->Message_Block[t4]) << 24) | (((uint32_t)context->Message_Block[t4 + 1]) << 16) |
(((uint32_t)context->Message_Block[t4 + 2]) << 8) | (((uint32_t)context->Message_Block[t4 + 3]));
for (t = 16; t < 64; t++) W[t] = SHA256_sigma1(W[t - 2]) + W[t - 7] + SHA256_sigma0(W[t - 15]) + W[t - 16];
A = context->Intermediate_Hash[0];
B = context->Intermediate_Hash[1];
C = context->Intermediate_Hash[2];
D = context->Intermediate_Hash[3];
E = context->Intermediate_Hash[4];
F = context->Intermediate_Hash[5];
G = context->Intermediate_Hash[6];
H = context->Intermediate_Hash[7];
for (t = 0; t < 64; t++) {
temp1 = H + SHA256_SIGMA1(E) + SHA_Ch(E, F, G) + K[t] + W[t];
temp2 = SHA256_SIGMA0(A) + SHA_Maj(A, B, C);
H = G;
G = F;
F = E;
E = D + temp1;
D = C;
C = B;
B = A;
A = temp1 + temp2;
}
context->Intermediate_Hash[0] += A;
context->Intermediate_Hash[1] += B;
context->Intermediate_Hash[2] += C;
context->Intermediate_Hash[3] += D;
context->Intermediate_Hash[4] += E;
context->Intermediate_Hash[5] += F;
context->Intermediate_Hash[6] += G;
context->Intermediate_Hash[7] += H;
context->Message_Block_Index = 0;
}
/*
* SHA224_256Reset
*
* Description:
* This helper function will initialize the SHA256Context in
* preparation for computing a new SHA256 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
* H0
* The initial hash value to use.
*
* Returns:
* sha Error Code.
*/
static int SHA224_256Reset(SHA256Context *context, uint32_t *H0) {
if (!context) return shaNull;
context->Length_Low = 0;
context->Length_High = 0;
context->Message_Block_Index = 0;
context->Intermediate_Hash[0] = H0[0];
context->Intermediate_Hash[1] = H0[1];
context->Intermediate_Hash[2] = H0[2];
context->Intermediate_Hash[3] = H0[3];
context->Intermediate_Hash[4] = H0[4];
context->Intermediate_Hash[5] = H0[5];
context->Intermediate_Hash[6] = H0[6];
context->Intermediate_Hash[7] = H0[7];
context->Computed = 0;
context->Corrupted = 0;
return shaSuccess;
}
/*
* SHA224_256ResultN
*
* Description:
* This helper function will return the 224-bit or 256-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 28th/32nd element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
* HashSize: [in]
* The size of the hash, either 28 or 32.
*
* Returns:
* sha Error Code.
*/
static int SHA224_256ResultN(SHA256Context *context, uint8_t Message_Digest[], int HashSize) {
int i;
if (!context || !Message_Digest) return shaNull;
if (context->Corrupted) return context->Corrupted;
if (!context->Computed) SHA224_256Finalize(context, 0x80);
for (i = 0; i < HashSize; ++i) Message_Digest[i] = (uint8_t)(context->Intermediate_Hash[i >> 2] >> 8 * (3 - (i & 0x03)));
return shaSuccess;
}
/*************************** sha384-512.c ***************************/
/********************* See RFC 4634 for details *********************/
/*
* Description:
* This file implements the Secure Hash Signature Standard
* algorithms as defined in the National Institute of Standards
* and Technology Federal Information Processing Standards
* Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2
* published on August 1, 2002, and the FIPS PUB 180-2 Change
* Notice published on February 28, 2004.
*
* A combined document showing all algorithms is available at
* http://csrc.nist.gov/publications/fips/
* fips180-2/fips180-2withchangenotice.pdf
*
* The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit
* message digests for a given data stream. It should take about
* 2**n steps to find a message with the same digest as a given
* message and 2**(n/2) to find any two messages with the same
* digest, when n is the digest size in bits. Therefore, this
* algorithm can serve as a means of providing a
* "fingerprint" for a message.
*
* Portability Issues:
* SHA-384 and SHA-512 are defined in terms of 64-bit "words",
* but if USE_32BIT_ONLY is #defined, this code is implemented in
* terms of 32-bit "words". This code uses <stdint.h> (included
* via "sha.h") to define the 64, 32 and 8 bit unsigned integer
* types. If your C compiler does not support 64 bit unsigned
* integers, and you do not #define USE_32BIT_ONLY, this code is
* not appropriate.
*
* Caveats:
* SHA-384 and SHA-512 are designed to work with messages less
* than 2^128 bits long. This implementation uses
* SHA384/512Input() to hash the bits that are a multiple of the
* size of an 8-bit character, and then uses SHA384/256FinalBits()
* to hash the final few bits of the input.
*
*/
//#include "sha.h"
//#include "sha-private.h"
#ifdef USE_32BIT_ONLY
/*
* Define 64-bit arithmetic in terms of 32-bit arithmetic.
* Each 64-bit number is represented in a 2-word array.
* All macros are defined such that the result is the last parameter.
*/
/*
* Define shift, rotate left and rotate right functions
*/
#define SHA512_SHR(bits, word, ret) \
(/* (((uint64_t)((word))) >> (bits)) */ \
(ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? ((word)[0] >> (bits)) : 0, \
(ret)[1] = \
((bits) > 32) ? ((word)[0] >> ((bits)-32)) : ((bits) == 32) ? (word)[0] : ((bits) >= 0) ? (((word)[0] << (32 - (bits))) | ((word)[1] >> (bits))) : 0)
#define SHA512_SHL(bits, word, ret) \
(/* (((uint64_t)(word)) << (bits)) */ \
(ret)[0] = \
((bits) > 32) ? ((word)[1] << ((bits)-32)) : ((bits) == 32) ? (word)[1] : ((bits) >= 0) ? (((word)[0] << (bits)) | ((word)[1] >> (32 - (bits)))) : 0, \
(ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? ((word)[1] << (bits)) : 0)
/*
* Define 64-bit OR
*/
#define SHA512_OR(word1, word2, ret) ((ret)[0] = (word1)[0] | (word2)[0], (ret)[1] = (word1)[1] | (word2)[1])
/*
* Define 64-bit XOR
*/
#define SHA512_XOR(word1, word2, ret) ((ret)[0] = (word1)[0] ^ (word2)[0], (ret)[1] = (word1)[1] ^ (word2)[1])
/*
* Define 64-bit AND
*/
#define SHA512_AND(word1, word2, ret) ((ret)[0] = (word1)[0] & (word2)[0], (ret)[1] = (word1)[1] & (word2)[1])
/*
* Define 64-bit TILDA
*/
#define SHA512_TILDA(word, ret) ((ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1])
/*
* Define 64-bit ADD
*/
#define SHA512_ADD(word1, word2, ret) ((ret)[1] = (word1)[1], (ret)[1] += (word2)[1], (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]))
/*
* Add the 4word value in word2 to word1.
*/
static uint32_t ADDTO4_temp, ADDTO4_temp2;
#define SHA512_ADDTO4(word1, word2) \
(ADDTO4_temp = (word1)[3], (word1)[3] += (word2)[3], ADDTO4_temp2 = (word1)[2], (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \
ADDTO4_temp = (word1)[1], (word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp))
/*
* Add the 2word value in word2 to word1.
*/
static uint32_t ADDTO2_temp;
#define SHA512_ADDTO2(word1, word2) (ADDTO2_temp = (word1)[1], (word1)[1] += (word2)[1], (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp))
/*
* SHA rotate ((word >> bits) | (word << (64-bits)))
*/
static uint32_t ROTR_temp1[2], ROTR_temp2[2];
#define SHA512_ROTR(bits, word, ret) \
(SHA512_SHR((bits), (word), ROTR_temp1), SHA512_SHL(64 - (bits), (word), ROTR_temp2), SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)))
/*
* Define the SHA SIGMA and sigma macros
* SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
*/
static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2], SIGMA0_temp3[2], SIGMA0_temp4[2];
#define SHA512_SIGMA0(word, ret) \
(SHA512_ROTR(28, (word), SIGMA0_temp1), SHA512_ROTR(34, (word), SIGMA0_temp2), SHA512_ROTR(39, (word), SIGMA0_temp3), \
SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)))
/*
* SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)
*/
static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2], SIGMA1_temp3[2], SIGMA1_temp4[2];
#define SHA512_SIGMA1(word, ret) \
(SHA512_ROTR(14, (word), SIGMA1_temp1), SHA512_ROTR(18, (word), SIGMA1_temp2), SHA512_ROTR(41, (word), SIGMA1_temp3), \
SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)))
/*
* (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
*/
static uint32_t sigma0_temp1[2], sigma0_temp2[2], sigma0_temp3[2], sigma0_temp4[2];
#define SHA512_sigma0(word, ret) \
(SHA512_ROTR(1, (word), sigma0_temp1), SHA512_ROTR(8, (word), sigma0_temp2), SHA512_SHR(7, (word), sigma0_temp3), \
SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)))
/*
* (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
*/
static uint32_t sigma1_temp1[2], sigma1_temp2[2], sigma1_temp3[2], sigma1_temp4[2];
#define SHA512_sigma1(word, ret) \
(SHA512_ROTR(19, (word), sigma1_temp1), SHA512_ROTR(61, (word), sigma1_temp2), SHA512_SHR(6, (word), sigma1_temp3), \
SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)))
#undef SHA_Ch
#undef SHA_Maj
#ifndef USE_MODIFIED_MACROS
/*
* These definitions are the ones used in FIPS-180-2, section 4.1.3
* Ch(x,y,z) ((x & y) ^ (~x & z))
*/
static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2];
#define SHA_Ch(x, y, z, ret) (SHA512_AND(x, y, Ch_temp1), SHA512_TILDA(x, Ch_temp2), SHA512_AND(Ch_temp2, z, Ch_temp3), SHA512_XOR(Ch_temp1, Ch_temp3, (ret)))
/*
* Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z)))
*/
static uint32_t Maj_temp1[2], Maj_temp2[2], Maj_temp3[2], Maj_temp4[2];
#define SHA_Maj(x, y, z, ret) \
(SHA512_AND(x, y, Maj_temp1), SHA512_AND(x, z, Maj_temp2), SHA512_AND(y, z, Maj_temp3), SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \
SHA512_XOR(Maj_temp1, Maj_temp4, (ret)))
#else /* !USE_32BIT_ONLY */
/*
* These definitions are potentially faster equivalents for the ones
* used in FIPS-180-2, section 4.1.3.
* ((x & y) ^ (~x & z)) becomes
* ((x & (y ^ z)) ^ z)
*/
#define SHA_Ch(x, y, z, ret) ((ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]))
/*
* ((x & y) ^ (x & z) ^ (y & z)) becomes
* ((x & (y | z)) | (y & z))
*/
#define SHA_Maj(x, y, z, ret) (ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])))
#endif /* USE_MODIFIED_MACROS */
/*
* add "length" to the length
*/
static uint32_t addTemp3[4] = {0, 0, 0, 0};
#define SHA384_512AddLength(context, length) \
(addTemp3[3] = (length), SHA512_ADDTO4((context)->Length, addTemp3), \
(context)->Corrupted = (((context)->Length[3] == 0) && ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && ((context)->Length[0] < 8)) ? 1 : 0)
/* Local Function Prototypes */
static void SHA384_512Finalize(SHA512Context *context, uint8_t Pad_Byte);
static void SHA384_512PadMessage(SHA512Context *context, uint8_t Pad_Byte);
static void SHA384_512ProcessMessageBlock(SHA512Context *context);
static int SHA384_512Reset(SHA512Context *context, uint32_t H0[]);
static int SHA384_512ResultN(SHA512Context *context, uint8_t Message_Digest[], int HashSize);
/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
static uint32_t SHA384_H0[SHA512HashSize / 4] = {0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A, 0x3070DD17, 0x152FECD8, 0xF70E5939,
0x67332667, 0xFFC00B31, 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D, 0xBEFA4FA4};
static uint32_t SHA512_H0[SHA512HashSize / 4] = {0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372, 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1,
0x510E527F, 0xADE682D1, 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19, 0x137E2179};
#else /* !USE_32BIT_ONLY */
/* Define the SHA shift, rotate left and rotate right macro */
#define SHA512_SHR(bits, word) (((uint64_t)(word)) >> (bits))
#define SHA512_ROTR(bits, word) ((((uint64_t)(word)) >> (bits)) | (((uint64_t)(word)) << (64 - (bits))))
/* Define the SHA SIGMA and sigma macros */
#define SHA512_SIGMA0(word) (SHA512_ROTR(28, word) ^ SHA512_ROTR(34, word) ^ SHA512_ROTR(39, word))
#define SHA512_SIGMA1(word) (SHA512_ROTR(14, word) ^ SHA512_ROTR(18, word) ^ SHA512_ROTR(41, word))
#define SHA512_sigma0(word) (SHA512_ROTR(1, word) ^ SHA512_ROTR(8, word) ^ SHA512_SHR(7, word))
#define SHA512_sigma1(word) (SHA512_ROTR(19, word) ^ SHA512_ROTR(61, word) ^ SHA512_SHR(6, word))
/*
* add "length" to the length
*/
static uint64_t addTemp4;
#define SHA384_512AddLength(context, length) \
(addTemp4 = context->Length_Low, context->Corrupted = ((context->Length_Low += length) < addTemp4) && (++context->Length_High == 0) ? 1 : 0)
/* Local Function Prototypes */
static void SHA384_512Finalize(SHA512Context *context, uint8_t Pad_Byte);
static void SHA384_512PadMessage(SHA512Context *context, uint8_t Pad_Byte);
static void SHA384_512ProcessMessageBlock(SHA512Context *context);
static int SHA384_512Reset(SHA512Context *context, uint64_t H0[]);
static int SHA384_512ResultN(SHA512Context *context, uint8_t Message_Digest[], int HashSize);
/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */
static uint64_t SHA384_H0[] = {0xCBBB9D5DC1059ED8ll, 0x629A292A367CD507ll, 0x9159015A3070DD17ll, 0x152FECD8F70E5939ll,
0x67332667FFC00B31ll, 0x8EB44A8768581511ll, 0xDB0C2E0D64F98FA7ll, 0x47B5481DBEFA4FA4ll};
static uint64_t SHA512_H0[] = {0x6A09E667F3BCC908ll, 0xBB67AE8584CAA73Bll, 0x3C6EF372FE94F82Bll, 0xA54FF53A5F1D36F1ll,
0x510E527FADE682D1ll, 0x9B05688C2B3E6C1Fll, 0x1F83D9ABFB41BD6Bll, 0x5BE0CD19137E2179ll};
#endif /* USE_32BIT_ONLY */
/*
* SHA384Reset
*
* Description:
* This function will initialize the SHA384Context in preparation
* for computing a new SHA384 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA384Reset(SHA384Context *context) { return SHA384_512Reset(context, SHA384_H0); }
/*
* SHA384Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int SHA384Input(SHA384Context *context, const uint8_t *message_array, unsigned int length) { return SHA512Input(context, message_array, length); }
/*
* SHA384FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA384FinalBits(SHA384Context *context, const uint8_t message_bits, unsigned int length) { return SHA512FinalBits(context, message_bits, length); }
/*
* SHA384Result
*
* Description:
* This function will return the 384-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 48th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA384Result(SHA384Context *context, uint8_t Message_Digest[SHA384HashSize]) { return SHA384_512ResultN(context, Message_Digest, SHA384HashSize); }
/*
* SHA512Reset
*
* Description:
* This function will initialize the SHA512Context in preparation
* for computing a new SHA512 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA512Reset(SHA512Context *context) { return SHA384_512Reset(context, SHA512_H0); }
/*
* SHA512Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int SHA512Input(SHA512Context *context, const uint8_t *message_array, unsigned int length) {
if (!length) return shaSuccess;
if (!context || !message_array) return shaNull;
if (context->Computed) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
while (length-- && !context->Corrupted) {
context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
if (!SHA384_512AddLength(context, 8) && (context->Message_Block_Index == SHA512_Message_Block_Size)) SHA384_512ProcessMessageBlock(context);
message_array++;
}
return shaSuccess;
}
/*
* SHA512FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA512FinalBits(SHA512Context *context, const uint8_t message_bits, unsigned int length) {
uint8_t masks[8] = {/* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
/* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
/* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
/* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE};
uint8_t markbit[8] = {/* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
/* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
/* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
/* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01};
if (!length) return shaSuccess;
if (!context) return shaNull;
if ((context->Computed) || (length >= 8) || (length == 0)) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted) return context->Corrupted;
SHA384_512AddLength(context, length);
SHA384_512Finalize(context, (uint8_t)((message_bits & masks[length]) | markbit[length]));
return shaSuccess;
}
/*
* SHA384_512Finalize
*
* Description:
* This helper function finishes off the digest calculations.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* sha Error Code.
*
*/
static void SHA384_512Finalize(SHA512Context *context, uint8_t Pad_Byte) {
int_least16_t i;
SHA384_512PadMessage(context, Pad_Byte);
/* message may be sensitive, clear it out */
for (i = 0; i < SHA512_Message_Block_Size; ++i) context->Message_Block[i] = 0;
#ifdef USE_32BIT_ONLY /* and clear length */
context->Length[0] = context->Length[1] = 0;
context->Length[2] = context->Length[3] = 0;
#else /* !USE_32BIT_ONLY */
context->Length_Low = 0;
context->Length_High = 0;
#endif /* USE_32BIT_ONLY */
context->Computed = 1;
}
/*
* SHA512Result
*
* Description:
* This function will return the 512-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 64th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
inline int SHA512Result(SHA512Context *context, uint8_t Message_Digest[SHA512HashSize]) { return SHA384_512ResultN(context, Message_Digest, SHA512HashSize); }
/*
* SHA384_512PadMessage
*
* Description:
* According to the standard, the message must be padded to an
* even 1024 bits. The first padding bit must be a '1'. The
* last 128 bits represent the length of the original message.
* All bits in between should be 0. This helper function will
* pad the message according to those rules by filling the
* Message_Block array accordingly. When it returns, it can be
* assumed that the message digest has been computed.
*
* Parameters:
* context: [in/out]
* The context to pad
* Pad_Byte: [in]
* The last byte to add to the digest before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* Nothing.
*
*/
static void SHA384_512PadMessage(SHA512Context *context, uint8_t Pad_Byte) {
/*
* Check to see if the current message block is too small to hold
* the initial padding bits and length. If so, we will pad the
* block, process it, and then continue padding into a second
* block.
*/
if (context->Message_Block_Index >= (SHA512_Message_Block_Size - 16)) {
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < SHA512_Message_Block_Size) context->Message_Block[context->Message_Block_Index++] = 0;
SHA384_512ProcessMessageBlock(context);
} else
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < (SHA512_Message_Block_Size - 16)) context->Message_Block[context->Message_Block_Index++] = 0;
/*
* Store the message length as the last 16 octets
*/
#ifdef USE_32BIT_ONLY
context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24);
context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16);
context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8);
context->Message_Block[115] = (uint8_t)(context->Length[0]);
context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24);
context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16);
context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8);
context->Message_Block[119] = (uint8_t)(context->Length[1]);
context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24);
context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16);
context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8);
context->Message_Block[123] = (uint8_t)(context->Length[2]);
context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24);
context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16);
context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8);
context->Message_Block[127] = (uint8_t)(context->Length[3]);
#else /* !USE_32BIT_ONLY */
context->Message_Block[112] = (uint8_t)(context->Length_High >> 56);
context->Message_Block[113] = (uint8_t)(context->Length_High >> 48);
context->Message_Block[114] = (uint8_t)(context->Length_High >> 40);
context->Message_Block[115] = (uint8_t)(context->Length_High >> 32);
context->Message_Block[116] = (uint8_t)(context->Length_High >> 24);
context->Message_Block[117] = (uint8_t)(context->Length_High >> 16);
context->Message_Block[118] = (uint8_t)(context->Length_High >> 8);
context->Message_Block[119] = (uint8_t)(context->Length_High);
context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56);
context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48);
context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40);
context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32);
context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24);
context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16);
context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8);
context->Message_Block[127] = (uint8_t)(context->Length_Low);
#endif /* USE_32BIT_ONLY */
SHA384_512ProcessMessageBlock(context);
}
/*
* SHA384_512ProcessMessageBlock
*
* Description:
* This helper function will process the next 1024 bits of the
* message stored in the Message_Block array.
*
* Parameters:
* context: [in/out]
* The SHA context to update
*
* Returns:
* Nothing.
*
* Comments:
* Many of the variable names in this code, especially the
* single character names, were used because those were the
* names used in the publication.
*
*
*/
static void SHA384_512ProcessMessageBlock(SHA512Context *context) {
/* Constants defined in FIPS-180-2, section 4.2.3 */
#ifdef USE_32BIT_ONLY
static const uint32_t K[80 * 2] = {
0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF, 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538, 0x59F111F1, 0xB605D019,
0x923F82A4, 0xAF194F9B, 0xAB1C5ED5, 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE, 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2,
0x72BE5D74, 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235, 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786, 0x384F25E3,
0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65, 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC, 0xBD41FBD4, 0x76F988DA, 0x831153B5,
0x983E5152, 0xEE66DFAB, 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7, 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725,
0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85, 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED, 0x53380D13, 0x9D95B3DF,
0x650A7354, 0x8BAF63DE, 0x766A0ABB, 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B, 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001,
0xC24B8B70, 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218, 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070, 0x32BBD1B8,
0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53, 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3, 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB,
0x5B9CCA4F, 0x7763E373, 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F, 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC,
0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7, 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C, 0xD186B8C7, 0x21C0C207,
0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F, 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6, 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B,
0x28DB77F5, 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC, 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C, 0xFC657E2A,
0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817};
int t, t2, t8; /* Loop counter */
uint32_t temp1[2], temp2[2], /* Temporary word values */
temp3[2], temp4[2], temp5[2];
uint32_t W[2 * 80]; /* Word sequence */
uint32_t A[2], B[2], C[2], D[2], /* Word buffers */
E[2], F[2], G[2], H[2];
/* Initialize the first 16 words in the array W */
for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) {
W[t2++] = ((((uint32_t)context->Message_Block[t8])) << 24) | ((((uint32_t)context->Message_Block[t8 + 1])) << 16) |
((((uint32_t)context->Message_Block[t8 + 2])) << 8) | ((((uint32_t)context->Message_Block[t8 + 3])));
W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) | ((((uint32_t)context->Message_Block[t8 + 5])) << 16) |
((((uint32_t)context->Message_Block[t8 + 6])) << 8) | ((((uint32_t)context->Message_Block[t8 + 7])));
}
for (t = 16; t < 80; t++, t2 += 2) {
/* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
SHA512_sigma0(W[t-15]) + W[t-16]; */
uint32_t *Wt2 = &W[t2 - 2 * 2];
uint32_t *Wt7 = &W[t2 - 7 * 2];
uint32_t *Wt15 = &W[t2 - 15 * 2];
uint32_t *Wt16 = &W[t2 - 16 * 2];
SHA512_sigma1(Wt2, temp1);
SHA512_ADD(temp1, Wt7, temp2);
SHA512_sigma0(Wt15, temp1);
SHA512_ADD(temp1, Wt16, temp3);
SHA512_ADD(temp2, temp3, &W[t2]);
}
A[0] = context->Intermediate_Hash[0];
A[1] = context->Intermediate_Hash[1];
B[0] = context->Intermediate_Hash[2];
B[1] = context->Intermediate_Hash[3];
C[0] = context->Intermediate_Hash[4];
C[1] = context->Intermediate_Hash[5];
D[0] = context->Intermediate_Hash[6];
D[1] = context->Intermediate_Hash[7];
E[0] = context->Intermediate_Hash[8];
E[1] = context->Intermediate_Hash[9];
F[0] = context->Intermediate_Hash[10];
F[1] = context->Intermediate_Hash[11];
G[0] = context->Intermediate_Hash[12];
G[1] = context->Intermediate_Hash[13];
H[0] = context->Intermediate_Hash[14];
H[1] = context->Intermediate_Hash[15];
for (t = t2 = 0; t < 80; t++, t2 += 2) {
/*
* temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
*/
SHA512_SIGMA1(E, temp1);
SHA512_ADD(H, temp1, temp2);
SHA_Ch(E, F, G, temp3);
SHA512_ADD(temp2, temp3, temp4);
SHA512_ADD(&K[t2], &W[t2], temp5);
SHA512_ADD(temp4, temp5, temp1);
/*
* temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
*/
SHA512_SIGMA0(A, temp3);
SHA_Maj(A, B, C, temp4);
SHA512_ADD(temp3, temp4, temp2);
H[0] = G[0];
H[1] = G[1];
G[0] = F[0];
G[1] = F[1];
F[0] = E[0];
F[1] = E[1];
SHA512_ADD(D, temp1, E);
D[0] = C[0];
D[1] = C[1];
C[0] = B[0];
C[1] = B[1];
B[0] = A[0];
B[1] = A[1];
SHA512_ADD(temp1, temp2, A);
}
SHA512_ADDTO2(&context->Intermediate_Hash[0], A);
SHA512_ADDTO2(&context->Intermediate_Hash[2], B);
SHA512_ADDTO2(&context->Intermediate_Hash[4], C);
SHA512_ADDTO2(&context->Intermediate_Hash[6], D);
SHA512_ADDTO2(&context->Intermediate_Hash[8], E);
SHA512_ADDTO2(&context->Intermediate_Hash[10], F);
SHA512_ADDTO2(&context->Intermediate_Hash[12], G);
SHA512_ADDTO2(&context->Intermediate_Hash[14], H);
#else /* !USE_32BIT_ONLY */
static const uint64_t K[80] = {
0x428A2F98D728AE22ll, 0x7137449123EF65CDll, 0xB5C0FBCFEC4D3B2Fll, 0xE9B5DBA58189DBBCll, 0x3956C25BF348B538ll, 0x59F111F1B605D019ll, 0x923F82A4AF194F9Bll,
0xAB1C5ED5DA6D8118ll, 0xD807AA98A3030242ll, 0x12835B0145706FBEll, 0x243185BE4EE4B28Cll, 0x550C7DC3D5FFB4E2ll, 0x72BE5D74F27B896Fll, 0x80DEB1FE3B1696B1ll,
0x9BDC06A725C71235ll, 0xC19BF174CF692694ll, 0xE49B69C19EF14AD2ll, 0xEFBE4786384F25E3ll, 0x0FC19DC68B8CD5B5ll, 0x240CA1CC77AC9C65ll, 0x2DE92C6F592B0275ll,
0x4A7484AA6EA6E483ll, 0x5CB0A9DCBD41FBD4ll, 0x76F988DA831153B5ll, 0x983E5152EE66DFABll, 0xA831C66D2DB43210ll, 0xB00327C898FB213Fll, 0xBF597FC7BEEF0EE4ll,
0xC6E00BF33DA88FC2ll, 0xD5A79147930AA725ll, 0x06CA6351E003826Fll, 0x142929670A0E6E70ll, 0x27B70A8546D22FFCll, 0x2E1B21385C26C926ll, 0x4D2C6DFC5AC42AEDll,
0x53380D139D95B3DFll, 0x650A73548BAF63DEll, 0x766A0ABB3C77B2A8ll, 0x81C2C92E47EDAEE6ll, 0x92722C851482353Bll, 0xA2BFE8A14CF10364ll, 0xA81A664BBC423001ll,
0xC24B8B70D0F89791ll, 0xC76C51A30654BE30ll, 0xD192E819D6EF5218ll, 0xD69906245565A910ll, 0xF40E35855771202All, 0x106AA07032BBD1B8ll, 0x19A4C116B8D2D0C8ll,
0x1E376C085141AB53ll, 0x2748774CDF8EEB99ll, 0x34B0BCB5E19B48A8ll, 0x391C0CB3C5C95A63ll, 0x4ED8AA4AE3418ACBll, 0x5B9CCA4F7763E373ll, 0x682E6FF3D6B2B8A3ll,
0x748F82EE5DEFB2FCll, 0x78A5636F43172F60ll, 0x84C87814A1F0AB72ll, 0x8CC702081A6439ECll, 0x90BEFFFA23631E28ll, 0xA4506CEBDE82BDE9ll, 0xBEF9A3F7B2C67915ll,
0xC67178F2E372532Bll, 0xCA273ECEEA26619Cll, 0xD186B8C721C0C207ll, 0xEADA7DD6CDE0EB1Ell, 0xF57D4F7FEE6ED178ll, 0x06F067AA72176FBAll, 0x0A637DC5A2C898A6ll,
0x113F9804BEF90DAEll, 0x1B710B35131C471Bll, 0x28DB77F523047D84ll, 0x32CAAB7B40C72493ll, 0x3C9EBE0A15C9BEBCll, 0x431D67C49C100D4Cll, 0x4CC5D4BECB3E42B6ll,
0x597F299CFC657E2All, 0x5FCB6FAB3AD6FAECll, 0x6C44198C4A475817ll};
int t, t8; /* Loop counter */
uint64_t temp1, temp2; /* Temporary word value */
uint64_t W[80]; /* Word sequence */
uint64_t A, B, C, D, E, F, G, H; /* Word buffers */
/*
* Initialize the first 16 words in the array W
*/
for (t = t8 = 0; t < 16; t++, t8 += 8)
W[t] = ((uint64_t)(context->Message_Block[t8]) << 56) | ((uint64_t)(context->Message_Block[t8 + 1]) << 48) |
((uint64_t)(context->Message_Block[t8 + 2]) << 40) | ((uint64_t)(context->Message_Block[t8 + 3]) << 32) |
((uint64_t)(context->Message_Block[t8 + 4]) << 24) | ((uint64_t)(context->Message_Block[t8 + 5]) << 16) |
((uint64_t)(context->Message_Block[t8 + 6]) << 8) | ((uint64_t)(context->Message_Block[t8 + 7]));
for (t = 16; t < 80; t++) W[t] = SHA512_sigma1(W[t - 2]) + W[t - 7] + SHA512_sigma0(W[t - 15]) + W[t - 16];
A = context->Intermediate_Hash[0];
B = context->Intermediate_Hash[1];
C = context->Intermediate_Hash[2];
D = context->Intermediate_Hash[3];
E = context->Intermediate_Hash[4];
F = context->Intermediate_Hash[5];
G = context->Intermediate_Hash[6];
H = context->Intermediate_Hash[7];
for (t = 0; t < 80; t++) {
temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E, F, G) + K[t] + W[t];
temp2 = SHA512_SIGMA0(A) + SHA_Maj(A, B, C);
H = G;
G = F;
F = E;
E = D + temp1;
D = C;
C = B;
B = A;
A = temp1 + temp2;
}
context->Intermediate_Hash[0] += A;
context->Intermediate_Hash[1] += B;
context->Intermediate_Hash[2] += C;
context->Intermediate_Hash[3] += D;
context->Intermediate_Hash[4] += E;
context->Intermediate_Hash[5] += F;
context->Intermediate_Hash[6] += G;
context->Intermediate_Hash[7] += H;
#endif /* USE_32BIT_ONLY */
context->Message_Block_Index = 0;
}
/*
* SHA384_512Reset
*
* Description:
* This helper function will initialize the SHA512Context in
* preparation for computing a new SHA384 or SHA512 message
* digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
* H0
* The initial hash value to use.
*
* Returns:
* sha Error Code.
*
*/
#ifdef USE_32BIT_ONLY
static int SHA384_512Reset(SHA512Context *context, uint32_t H0[])
#else /* !USE_32BIT_ONLY */
static int SHA384_512Reset(SHA512Context *context, uint64_t H0[])
#endif /* USE_32BIT_ONLY */
{
int i;
if (!context) return shaNull;
context->Message_Block_Index = 0;
#ifdef USE_32BIT_ONLY
context->Length[0] = context->Length[1] = 0;
context->Length[2] = context->Length[3] = 0;
for (i = 0; i < SHA512HashSize / 4; i++) context->Intermediate_Hash[i] = H0[i];
#else /* !USE_32BIT_ONLY */
context->Length_High = context->Length_Low = 0;
for (i = 0; i < SHA512HashSize / 8; i++) context->Intermediate_Hash[i] = H0[i];
#endif /* USE_32BIT_ONLY */
context->Computed = 0;
context->Corrupted = 0;
return shaSuccess;
}
/*
* SHA384_512ResultN
*
* Description:
* This helper function will return the 384-bit or 512-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 48th/64th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest: [out]
* Where the digest is returned.
* HashSize: [in]
* The size of the hash, either 48 or 64.
*
* Returns:
* sha Error Code.
*
*/
static int SHA384_512ResultN(SHA512Context *context, uint8_t Message_Digest[], int HashSize) {
int i;
#ifdef USE_32BIT_ONLY
int i2;
#endif /* USE_32BIT_ONLY */
if (!context || !Message_Digest) return shaNull;
if (context->Corrupted) return context->Corrupted;
if (!context->Computed) SHA384_512Finalize(context, 0x80);
#ifdef USE_32BIT_ONLY
for (i = i2 = 0; i < HashSize;) {
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 24);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 16);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2] >> 8);
Message_Digest[i++] = (uint8_t)(context->Intermediate_Hash[i2++]);
}
#else /* !USE_32BIT_ONLY */
for (i = 0; i < HashSize; ++i) Message_Digest[i] = (uint8_t)(context->Intermediate_Hash[i >> 3] >> 8 * (7 - (i % 8)));
#endif /* USE_32BIT_ONLY */
return shaSuccess;
}
/**************************** usha.c ****************************/
/******************** See RFC 4634 for details ******************/
/*
* Description:
* This file implements a unified interface to the SHA algorithms.
*/
//#include "sha.h"
/*
* USHAReset
*
* Description:
* This function will initialize the SHA Context in preparation
* for computing a new SHA message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
* whichSha: [in]
* Selects which SHA reset to call
*
* Returns:
* sha Error Code.
*
*/
inline int USHAReset(USHAContext *ctx, enum SHAversion whichSha) {
if (ctx) {
ctx->whichSha = whichSha;
switch (whichSha) {
case SHA1:
return SHA1Reset((SHA1Context *)&ctx->ctx);
case SHA224:
return SHA224Reset((SHA224Context *)&ctx->ctx);
case SHA256:
return SHA256Reset((SHA256Context *)&ctx->ctx);
case SHA384:
return SHA384Reset((SHA384Context *)&ctx->ctx);
case SHA512:
return SHA512Reset((SHA512Context *)&ctx->ctx);
default:
return shaBadParam;
}
} else {
return shaNull;
}
}
/*
* USHAInput
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int USHAInput(USHAContext *ctx, const uint8_t *bytes, unsigned int bytecount) {
if (ctx) {
switch (ctx->whichSha) {
case SHA1:
return SHA1Input((SHA1Context *)&ctx->ctx, bytes, bytecount);
case SHA224:
return SHA224Input((SHA224Context *)&ctx->ctx, bytes, bytecount);
case SHA256:
return SHA256Input((SHA256Context *)&ctx->ctx, bytes, bytecount);
case SHA384:
return SHA384Input((SHA384Context *)&ctx->ctx, bytes, bytecount);
case SHA512:
return SHA512Input((SHA512Context *)&ctx->ctx, bytes, bytecount);
default:
return shaBadParam;
}
} else {
return shaNull;
}
}
/*
* USHAFinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*/
inline int USHAFinalBits(USHAContext *ctx, const uint8_t bits, unsigned int bitcount) {
if (ctx) {
switch (ctx->whichSha) {
case SHA1:
return SHA1FinalBits((SHA1Context *)&ctx->ctx, bits, bitcount);
case SHA224:
return SHA224FinalBits((SHA224Context *)&ctx->ctx, bits, bitcount);
case SHA256:
return SHA256FinalBits((SHA256Context *)&ctx->ctx, bits, bitcount);
case SHA384:
return SHA384FinalBits((SHA384Context *)&ctx->ctx, bits, bitcount);
case SHA512:
return SHA512FinalBits((SHA512Context *)&ctx->ctx, bits, bitcount);
default:
return shaBadParam;
}
} else {
return shaNull;
}
}
/*
* USHAResult
*
* Description:
* This function will return the 160-bit message digest into the
* Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the 19th element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA-1 hash.
* Message_Digest: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
inline int USHAResult(USHAContext *ctx, uint8_t Message_Digest[USHAMaxHashSize]) {
if (ctx) {
switch (ctx->whichSha) {
case SHA1:
return SHA1Result((SHA1Context *)&ctx->ctx, Message_Digest);
case SHA224:
return SHA224Result((SHA224Context *)&ctx->ctx, Message_Digest);
case SHA256:
return SHA256Result((SHA256Context *)&ctx->ctx, Message_Digest);
case SHA384:
return SHA384Result((SHA384Context *)&ctx->ctx, Message_Digest);
case SHA512:
return SHA512Result((SHA512Context *)&ctx->ctx, Message_Digest);
default:
return shaBadParam;
}
} else {
return shaNull;
}
}
/*
* USHABlockSize
*
* Description:
* This function will return the blocksize for the given SHA
* algorithm.
*
* Parameters:
* whichSha:
* which SHA algorithm to query
*
* Returns:
* block size
*
*/
inline int USHABlockSize(enum SHAversion whichSha) {
switch (whichSha) {
case SHA1:
return SHA1_Message_Block_Size;
case SHA224:
return SHA224_Message_Block_Size;
case SHA256:
return SHA256_Message_Block_Size;
case SHA384:
return SHA384_Message_Block_Size;
default:
case SHA512:
return SHA512_Message_Block_Size;
}
}
/*
* USHAHashSize
*
* Description:
* This function will return the hashsize for the given SHA
* algorithm.
*
* Parameters:
* whichSha:
* which SHA algorithm to query
*
* Returns:
* hash size
*
*/
inline int USHAHashSize(enum SHAversion whichSha) {
switch (whichSha) {
case SHA1:
return SHA1HashSize;
case SHA224:
return SHA224HashSize;
case SHA256:
return SHA256HashSize;
case SHA384:
return SHA384HashSize;
default:
case SHA512:
return SHA512HashSize;
}
}
/*
* USHAHashSizeBits
*
* Description:
* This function will return the hashsize for the given SHA
* algorithm, expressed in bits.
*
* Parameters:
* whichSha:
* which SHA algorithm to query
*
* Returns:
* hash size in bits
*
*/
inline int USHAHashSizeBits(enum SHAversion whichSha) {
switch (whichSha) {
case SHA1:
return SHA1HashSizeBits;
case SHA224:
return SHA224HashSizeBits;
case SHA256:
return SHA256HashSizeBits;
case SHA384:
return SHA384HashSizeBits;
default:
case SHA512:
return SHA512HashSizeBits;
}
}
/*
* hmac
*
* Description:
* This function will compute an HMAC message digest.
*
* Parameters:
* whichSha: [in]
* One of SHA1, SHA224, SHA256, SHA384, SHA512
* key: [in]
* The secret shared key.
* key_len: [in]
* The length of the secret shared key.
* message_array: [in]
* An array of characters representing the message.
* length: [in]
* The length of the message in message_array
* digest: [out]
* Where the digest is returned.
* NOTE: The length of the digest is determined by
* the value of whichSha.
*
* Returns:
* sha Error Code.
*
*/
inline int hmac(SHAversion whichSha, const unsigned char *text, int text_len, const unsigned char *key, int key_len, uint8_t digest[USHAMaxHashSize]) {
HMACContext ctx;
return hmacReset(&ctx, whichSha, key, key_len) || hmacInput(&ctx, text, text_len) || hmacResult(&ctx, digest);
}
/*
* hmacReset
*
* Description:
* This function will initialize the hmacContext in preparation
* for computing a new HMAC message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
* whichSha: [in]
* One of SHA1, SHA224, SHA256, SHA384, SHA512
* key: [in]
* The secret shared key.
* key_len: [in]
* The length of the secret shared key.
*
* Returns:
* sha Error Code.
*
*/
inline int hmacReset(HMACContext *ctx, enum SHAversion whichSha, const unsigned char *key, int key_len) {
int i, blocksize, hashsize;
/* inner padding - key XORd with ipad */
unsigned char k_ipad[USHA_Max_Message_Block_Size];
/* temporary buffer when keylen > blocksize */
unsigned char tempkey[USHAMaxHashSize];
if (!ctx) return shaNull;
blocksize = ctx->blockSize = USHABlockSize(whichSha);
hashsize = ctx->hashSize = USHAHashSize(whichSha);
ctx->whichSha = whichSha;
/*
* If key is longer than the hash blocksize,
* reset it to key = HASH(key).
*/
if (key_len > blocksize) {
USHAContext tctx;
int err = USHAReset(&tctx, whichSha) || USHAInput(&tctx, key, key_len) || USHAResult(&tctx, tempkey);
if (err != shaSuccess) return err;
key = tempkey;
key_len = hashsize;
}
/*
* The HMAC transform looks like:
*
* SHA(K XOR opad, SHA(K XOR ipad, text))
*
* where K is an n byte key.
* ipad is the byte 0x36 repeated blocksize times
* opad is the byte 0x5c repeated blocksize times
* and text is the data being protected.
*/
/* store key into the pads, XOR'd with ipad and opad values */
for (i = 0; i < key_len; i++) {
k_ipad[i] = key[i] ^ 0x36;
ctx->k_opad[i] = key[i] ^ 0x5c;
}
/* remaining pad bytes are '\0' XOR'd with ipad and opad values */
for (; i < blocksize; i++) {
k_ipad[i] = 0x36;
ctx->k_opad[i] = 0x5c;
}
/* perform inner hash */
/* init context for 1st pass */
return USHAReset(&ctx->shaContext, whichSha) ||
/* and start with inner pad */
USHAInput(&ctx->shaContext, k_ipad, blocksize);
}
/*
* hmacInput
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The HMAC context to update
* message_array: [in]
* An array of characters representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array
*
* Returns:
* sha Error Code.
*
*/
inline int hmacInput(HMACContext *ctx, const unsigned char *text, int text_len) {
if (!ctx) return shaNull;
/* then text of datagram */
return USHAInput(&ctx->shaContext, text, text_len);
}
/*
* HMACFinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The HMAC context to update
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*/
inline int hmacFinalBits(HMACContext *ctx, const uint8_t bits, unsigned int bitcount) {
if (!ctx) return shaNull;
/* then final bits of datagram */
return USHAFinalBits(&ctx->shaContext, bits, bitcount);
}
/*
* HMACResult
*
* Description:
* This function will return the N-byte message digest into the
* Message_Digest array provided by the caller.
* NOTE: The first octet of hash is stored in the 0th element,
* the last octet of hash in the Nth element.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the HMAC hash.
* digest: [out]
* Where the digest is returned.
* NOTE 2: The length of the hash is determined by the value of
* whichSha that was passed to hmacReset().
*
* Returns:
* sha Error Code.
*
*/
inline int hmacResult(HMACContext *ctx, uint8_t *digest) {
if (!ctx) return shaNull;
/* finish up 1st pass */
/* (Use digest here as a temporary buffer.) */
return USHAResult(&ctx->shaContext, digest) ||
/* perform outer SHA */
/* init context for 2nd pass */
USHAReset(&ctx->shaContext, (SHAversion)ctx->whichSha) ||
/* start with outer pad */
USHAInput(&ctx->shaContext, ctx->k_opad, ctx->blockSize) ||
/* then results of 1st hash */
USHAInput(&ctx->shaContext, digest, ctx->hashSize) ||
/* finish up 2nd pass */
USHAResult(&ctx->shaContext, digest);
}
}
#include "ccapi_cpp/ccapi_logger.h"
#include "ccapi_cpp/ccapi_macro.h"
namespace ccapi {
class Hmac CCAPI_FINAL {
// https://github.com/Yubico/yubico-c-client/blob/ykclient-2.15/sha384-512.c
public:
enum class ShaVersion {
UNKNOWN,
SHA1,
SHA224,
SHA256,
SHA384,
SHA512,
};
static std::string hmacYubico(const ShaVersion shaVersion, const std::string &key, const std::string &msg, bool returnHex = false) {
yubico::SHAversion whichSha{};
int shaHashSize{};
switch (shaVersion) {
case ShaVersion::SHA1:
whichSha = yubico::SHAversion::SHA1;
shaHashSize = yubico::SHA1HashSize;
break;
case ShaVersion::SHA224:
whichSha = yubico::SHAversion::SHA224;
shaHashSize = yubico::SHA224HashSize;
break;
case ShaVersion::SHA256:
whichSha = yubico::SHAversion::SHA256;
shaHashSize = yubico::SHA256HashSize;
break;
case ShaVersion::SHA384:
whichSha = yubico::SHAversion::SHA384;
shaHashSize = yubico::SHA384HashSize;
break;
case ShaVersion::SHA512:
whichSha = yubico::SHAversion::SHA512;
shaHashSize = yubico::SHA512HashSize;
break;
default:
CCAPI_LOGGER_FATAL(CCAPI_UNSUPPORTED_VALUE);
}
uint8_t digest[yubico::USHAMaxHashSize];
int err = yubico::hmac(whichSha, reinterpret_cast<unsigned char *>(const_cast<char *>(msg.c_str())), msg.length(),
reinterpret_cast<unsigned char *>(const_cast<char *>(key.c_str())), key.length(), digest);
if (err != yubico::shaSuccess) {
throw std::runtime_error("hmac sha error");
}
std::stringstream ss;
if (returnHex) {
ss << std::hex << std::setfill('0');
for (int i = 0; i < shaHashSize; i++) {
ss << std::hex << std::setw(2) << (unsigned int)digest[i];
}
} else {
for (int i = 0; i < shaHashSize; i++) {
ss << (char)digest[i];
}
}
return ss.str();
}
static std::string hmac(const ShaVersion shaVersion, const std::string &key, const std::string &msg, bool returnHex = false) {
#ifdef CCAPI_SHA_USE_OPENSSL
if (shaVersion == ShaVersion::SHA256) {
unsigned char hash[32];
HMAC_CTX *hmac = HMAC_CTX_new();
HMAC_Init_ex(hmac, &key[0], key.length(), EVP_sha256(), NULL);
HMAC_Update(hmac, (unsigned char *)&msg[0], msg.length());
unsigned int len = 32;
HMAC_Final(hmac, hash, &len);
HMAC_CTX_free(hmac);
std::stringstream ss;
if (returnHex) {
ss << std::hex << std::setfill('0');
for (int i = 0; i < len; i++) {
ss << std::hex << std::setw(2) << (unsigned int)hash[i];
}
} else {
for (int i = 0; i < len; i++) {
ss << (char)hash[i];
}
}
return (ss.str());
} else {
return hmacYubico(shaVersion, key, msg, returnHex);
}
#else
return hmacYubico(shaVersion, key, msg, returnHex);
#endif
}
};
} /* namespace ccapi */
#endif // INCLUDE_CCAPI_CPP_CCAPI_HMAC_H_
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