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/*
* sha.h: header file for SHA-1/224/256/384/512 routines
*
* Ref: NIST FIPS PUB 180-4 Secure Hash Standard
*
* Copyright (C) 2003-2017 Mark Shelor, All Rights Reserved
*
* Version: 5.98
* Wed Oct 4 00:40:02 MST 2017
*
*/
#ifndef _INCLUDE_SHA_H_
#define _INCLUDE_SHA_H_
#include <limits.h>
#define SHA32_MAX 4294967295U
#define SHA32_SHR(x, n) ((x) >> (n))
#define SHA32_SHL(x, n) ((x) << (n))
#define SHA64_SHR(x, n) ((x) >> (n))
#define SHA64_SHL(x, n) ((x) << (n))
#define SHA32_ALIGNED
#define SHA64_ALIGNED
#define SHA_LO32(x) (x)
#if USHRT_MAX == SHA32_MAX
#define SHA32 unsigned short
#define SHA32_CONST(c) c ## U
#elif UINT_MAX == SHA32_MAX
#define SHA32 unsigned int
#define SHA32_CONST(c) c ## U
#elif ULONG_MAX == SHA32_MAX
#define SHA32 unsigned long
#define SHA32_CONST(c) c ## UL
#else
#undef SHA32_ALIGNED
#undef SHA_LO32
#define SHA_LO32(x) ((x) & SHA32_MAX)
#undef SHA32_SHR
#define SHA32_SHR(x, n) (SHA_LO32(x) >> (n))
#define SHA32 unsigned long
#define SHA32_CONST(c) c ## UL
#endif
#if defined(ULONG_LONG_MAX) || defined(ULLONG_MAX) || defined(HAS_LONG_LONG)
#define SHA_ULL_EXISTS
#endif
#if (((ULONG_MAX >> 16) >> 16) >> 16) >> 15 == 1UL
#define SHA64 unsigned long
#define SHA64_CONST(c) c ## UL
#elif defined(SHA_ULL_EXISTS) && defined(LONGLONGSIZE) && LONGLONGSIZE == 8
#define SHA64 unsigned long long
#define SHA64_CONST(c) c ## ULL
#elif defined(SHA_ULL_EXISTS)
#undef SHA64_ALIGNED
#undef SHA64_SHR
#define SHA64_MAX 18446744073709551615ULL
#define SHA64_SHR(x, n) (((x) & SHA64_MAX) >> (n))
#define SHA64 unsigned long long
#define SHA64_CONST(c) c ## ULL
/* The following cases detect compilers that
* support 64-bit types in a non-standard way */
#elif defined(_MSC_VER) /* Microsoft C */
#define SHA64 unsigned __int64
#define SHA64_CONST(c) (SHA64) c
#endif
#if defined(SHA64) && !defined(NO_SHA_384_512)
#define SHA_384_512
#endif
#if defined(BYTEORDER) && (BYTEORDER & 0xffff) == 0x4321
#if defined(SHA32_ALIGNED)
#define SHA32_SCHED(W, b) Copy(b, W, 64, char)
#endif
#if defined(SHA64) && defined(SHA64_ALIGNED)
#define SHA64_SCHED(W, b) Copy(b, W, 128, char)
#endif
#endif
#if !defined(SHA32_SCHED)
#define SHA32_SCHED(W, b) { int t; SHA32 *q = W; \
for (t = 0; t < 16; t++, b += 4) *q++ = \
(SHA32) b[0] << 24 | (SHA32) b[1] << 16 | \
(SHA32) b[2] << 8 | (SHA32) b[3]; }
#endif
#if defined(SHA64) && !defined(SHA64_SCHED)
#define SHA64_SCHED(W, b) { int t; SHA64 *q = W; \
for (t = 0; t < 16; t++, b += 8) *q++ = \
(SHA64) b[0] << 56 | (SHA64) b[1] << 48 | \
(SHA64) b[2] << 40 | (SHA64) b[3] << 32 | \
(SHA64) b[4] << 24 | (SHA64) b[5] << 16 | \
(SHA64) b[6] << 8 | (SHA64) b[7]; }
#endif
#define SHA1 1
#define SHA224 224
#define SHA256 256
#define SHA384 384
#define SHA512 512
#define SHA512224 512224
#define SHA512256 512256
#define SHA1_BLOCK_BITS 512
#define SHA224_BLOCK_BITS SHA1_BLOCK_BITS
#define SHA256_BLOCK_BITS SHA1_BLOCK_BITS
#define SHA384_BLOCK_BITS 1024
#define SHA512_BLOCK_BITS SHA384_BLOCK_BITS
#define SHA512224_BLOCK_BITS SHA512_BLOCK_BITS
#define SHA512256_BLOCK_BITS SHA512_BLOCK_BITS
#define SHA1_DIGEST_BITS 160
#define SHA224_DIGEST_BITS 224
#define SHA256_DIGEST_BITS 256
#define SHA384_DIGEST_BITS 384
#define SHA512_DIGEST_BITS 512
#define SHA512224_DIGEST_BITS 224
#define SHA512256_DIGEST_BITS 256
#define SHA_MAX_BLOCK_BITS SHA512_BLOCK_BITS
#define SHA_MAX_DIGEST_BITS SHA512_DIGEST_BITS
#define SHA_MAX_HEX_LEN (SHA_MAX_DIGEST_BITS / 4)
#define SHA_MAX_BASE64_LEN (1 + (SHA_MAX_DIGEST_BITS / 6))
#if !defined(SHA64)
#define SHA64 SHA32
#endif
typedef struct SHA {
int alg;
void (*sha)(struct SHA *, unsigned char *);
SHA32 H32[8];
SHA64 H64[8];
unsigned char block[SHA_MAX_BLOCK_BITS/8];
unsigned int blockcnt;
unsigned int blocksize;
SHA32 lenhh, lenhl, lenlh, lenll;
unsigned char digest[SHA_MAX_DIGEST_BITS/8];
unsigned int digestlen;
char hex[SHA_MAX_HEX_LEN+1];
char base64[SHA_MAX_BASE64_LEN+1];
} SHA;
typedef struct {
SHA isha;
SHA osha;
unsigned int digestlen;
unsigned char key[SHA_MAX_BLOCK_BITS/8];
} HMAC;
#endif /* _INCLUDE_SHA_H_ */
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