/*

 * Copyright 2004-2021 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/*

 * SHA512 low level APIs are deprecated for public use, but still ok for

 * internal use.

 */

#include "internal/deprecated.h"

#include <stdio.h>

#include <openssl/opensslconf.h>

/*-

 * IMPLEMENTATION NOTES.

 *

 * As you might have noticed 32-bit hash algorithms:

 *

 * - permit SHA_LONG to be wider than 32-bit

 * - optimized versions implement two transform functions: one operating

 *   on [aligned] data in host byte order and one - on data in input

 *   stream byte order;

 * - share common byte-order neutral collector and padding function

 *   implementations, ../md32_common.h;

 *

 * Neither of the above applies to this SHA-512 implementations. Reasons

 * [in reverse order] are:

 *

 * - it's the only 64-bit hash algorithm for the moment of this writing,

 *   there is no need for common collector/padding implementation [yet];

 * - by supporting only one transform function [which operates on

 *   *aligned* data in input stream byte order, big-endian in this case]

 *   we minimize burden of maintenance in two ways: a) collector/padding

 *   function is simpler; b) only one transform function to stare at;

 * - SHA_LONG64 is required to be exactly 64-bit in order to be able to

 *   apply a number of optimizations to mitigate potential performance

 *   penalties caused by previous design decision;

 *

 * Caveat lector.

 *

 * Implementation relies on the fact that "long long" is 64-bit on

 * both 32- and 64-bit platforms. If some compiler vendor comes up

 * with 128-bit long long, adjustment to sha.h would be required.

 * As this implementation relies on 64-bit integer type, it's totally

 * inappropriate for platforms which don't support it, most notably

 * 16-bit platforms.

 */

#include <stdlib.h>

#include <string.h>

#include <openssl/crypto.h>

#include <openssl/sha.h>

#include <openssl/opensslv.h>

#include "internal/cryptlib.h"

#include "crypto/sha.h"

#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64) || defined(__s390__) || defined(__s390x__) || defined(__aarch64__) || defined(SHA512_ASM)

#define SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA

#endif

#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)

#define U64(C) C##UI64

#elif defined(__arch64__)

#define U64(C) C##UL

#else

#define U64(C) C##ULL

#endif

int sha512_224_init(SHA512_CTX *c)

{

    c->h[0] = U64(0x8c3d37c819544da2);

    c->h[1] = U64(0x73e1996689dcd4d6);

    c->h[2] = U64(0x1dfab7ae32ff9c82);

    c->h[3] = U64(0x679dd514582f9fcf);

    c->h[4] = U64(0x0f6d2b697bd44da8);

    c->h[5] = U64(0x77e36f7304c48942);

    c->h[6] = U64(0x3f9d85a86a1d36c8);

    c->h[7] = U64(0x1112e6ad91d692a1);

    c->Nl = 0;

    c->Nh = 0;

    c->num = 0;

    c->md_len = SHA224_DIGEST_LENGTH;

    return 1;

}

int sha512_256_init(SHA512_CTX *c)

{

    c->h[0] = U64(0x22312194fc2bf72c);

    c->h[1] = U64(0x9f555fa3c84c64c2);

    c->h[2] = U64(0x2393b86b6f53b151);

    c->h[3] = U64(0x963877195940eabd);

    c->h[4] = U64(0x96283ee2a88effe3);

    c->h[5] = U64(0xbe5e1e2553863992);

    c->h[6] = U64(0x2b0199fc2c85b8aa);

    c->h[7] = U64(0x0eb72ddc81c52ca2);

    c->Nl = 0;

    c->Nh = 0;

    c->num = 0;

    c->md_len = SHA256_DIGEST_LENGTH;

    return 1;

}

int SHA384_Init(SHA512_CTX *c)

{

    c->h[0] = U64(0xcbbb9d5dc1059ed8);

    c->h[1] = U64(0x629a292a367cd507);

    c->h[2] = U64(0x9159015a3070dd17);

    c->h[3] = U64(0x152fecd8f70e5939);

    c->h[4] = U64(0x67332667ffc00b31);

    c->h[5] = U64(0x8eb44a8768581511);

    c->h[6] = U64(0xdb0c2e0d64f98fa7);

    c->h[7] = U64(0x47b5481dbefa4fa4);

    c->Nl = 0;

    c->Nh = 0;

    c->num = 0;

    c->md_len = SHA384_DIGEST_LENGTH;

    return 1;

}

int SHA512_Init(SHA512_CTX *c)

{

    c->h[0] = U64(0x6a09e667f3bcc908);

    c->h[1] = U64(0xbb67ae8584caa73b);

    c->h[2] = U64(0x3c6ef372fe94f82b);

    c->h[3] = U64(0xa54ff53a5f1d36f1);

    c->h[4] = U64(0x510e527fade682d1);

    c->h[5] = U64(0x9b05688c2b3e6c1f);

    c->h[6] = U64(0x1f83d9abfb41bd6b);

    c->h[7] = U64(0x5be0cd19137e2179);

    c->Nl = 0;

    c->Nh = 0;

    c->num = 0;

    c->md_len = SHA512_DIGEST_LENGTH;

    return 1;

}

#ifndef SHA512_ASM

static

#endif

    void sha512_block_data_order(SHA512_CTX *ctx, const void *in, size_t num);

int SHA512_Final(unsigned char *md, SHA512_CTX *c)

{

    unsigned char *p = (unsigned char *)c->u.p;

    size_t n = c->num;

    p[n] = 0x80; /* There always is a room for one */

    n++;

    if (n > (sizeof(c->u) - 16)) {

        memset(p + n, 0, sizeof(c->u) - n);

        n = 0;

        sha512_block_data_order(c, p, 1);

    }

    memset(p + n, 0, sizeof(c->u) - 16 - n);

#ifdef B_ENDIAN

    c->u.d[SHA_LBLOCK - 2] = c->Nh;

    c->u.d[SHA_LBLOCK - 1] = c->Nl;

#else

    p[sizeof(c->u) - 1] = (unsigned char)(c->Nl);

    p[sizeof(c->u) - 2] = (unsigned char)(c->Nl >> 8);

    p[sizeof(c->u) - 3] = (unsigned char)(c->Nl >> 16);

    p[sizeof(c->u) - 4] = (unsigned char)(c->Nl >> 24);

    p[sizeof(c->u) - 5] = (unsigned char)(c->Nl >> 32);

    p[sizeof(c->u) - 6] = (unsigned char)(c->Nl >> 40);

    p[sizeof(c->u) - 7] = (unsigned char)(c->Nl >> 48);

    p[sizeof(c->u) - 8] = (unsigned char)(c->Nl >> 56);

    p[sizeof(c->u) - 9] = (unsigned char)(c->Nh);

    p[sizeof(c->u) - 10] = (unsigned char)(c->Nh >> 8);

    p[sizeof(c->u) - 11] = (unsigned char)(c->Nh >> 16);

    p[sizeof(c->u) - 12] = (unsigned char)(c->Nh >> 24);

    p[sizeof(c->u) - 13] = (unsigned char)(c->Nh >> 32);

    p[sizeof(c->u) - 14] = (unsigned char)(c->Nh >> 40);

    p[sizeof(c->u) - 15] = (unsigned char)(c->Nh >> 48);

    p[sizeof(c->u) - 16] = (unsigned char)(c->Nh >> 56);

#endif

    sha512_block_data_order(c, p, 1);

    if (md == 0)

        return 0;

    switch (c->md_len) {

    /* Let compiler decide if it's appropriate to unroll... */

    case SHA224_DIGEST_LENGTH:

        for (n = 0; n < SHA224_DIGEST_LENGTH / 8; n++) {

            SHA_LONG64 t = c->h[n];

            *(md++) = (unsigned char)(t >> 56);

            *(md++) = (unsigned char)(t >> 48);

            *(md++) = (unsigned char)(t >> 40);

            *(md++) = (unsigned char)(t >> 32);

            *(md++) = (unsigned char)(t >> 24);

            *(md++) = (unsigned char)(t >> 16);

            *(md++) = (unsigned char)(t >> 8);

            *(md++) = (unsigned char)(t);

        }

        /*

         * For 224 bits, there are four bytes left over that have to be

         * processed separately.

         */

        {

            SHA_LONG64 t = c->h[SHA224_DIGEST_LENGTH / 8];

            *(md++) = (unsigned char)(t >> 56);

            *(md++) = (unsigned char)(t >> 48);

            *(md++) = (unsigned char)(t >> 40);

            *(md++) = (unsigned char)(t >> 32);

        }

        break;

    case SHA256_DIGEST_LENGTH:

        for (n = 0; n < SHA256_DIGEST_LENGTH / 8; n++) {

            SHA_LONG64 t = c->h[n];

            *(md++) = (unsigned char)(t >> 56);

            *(md++) = (unsigned char)(t >> 48);

            *(md++) = (unsigned char)(t >> 40);

            *(md++) = (unsigned char)(t >> 32);

            *(md++) = (unsigned char)(t >> 24);

            *(md++) = (unsigned char)(t >> 16);

            *(md++) = (unsigned char)(t >> 8);

            *(md++) = (unsigned char)(t);

        }

        break;

    case SHA384_DIGEST_LENGTH:

        for (n = 0; n < SHA384_DIGEST_LENGTH / 8; n++) {

            SHA_LONG64 t = c->h[n];

            *(md++) = (unsigned char)(t >> 56);

            *(md++) = (unsigned char)(t >> 48);

            *(md++) = (unsigned char)(t >> 40);

            *(md++) = (unsigned char)(t >> 32);

            *(md++) = (unsigned char)(t >> 24);

            *(md++) = (unsigned char)(t >> 16);

            *(md++) = (unsigned char)(t >> 8);

            *(md++) = (unsigned char)(t);

        }

        break;

    case SHA512_DIGEST_LENGTH:

        for (n = 0; n < SHA512_DIGEST_LENGTH / 8; n++) {

            SHA_LONG64 t = c->h[n];

            *(md++) = (unsigned char)(t >> 56);

            *(md++) = (unsigned char)(t >> 48);

            *(md++) = (unsigned char)(t >> 40);

            *(md++) = (unsigned char)(t >> 32);

            *(md++) = (unsigned char)(t >> 24);

            *(md++) = (unsigned char)(t >> 16);

            *(md++) = (unsigned char)(t >> 8);

            *(md++) = (unsigned char)(t);

        }

        break;

    /* ... as well as make sure md_len is not abused. */

    default:

        return 0;

    }

    return 1;

}

int SHA384_Final(unsigned char *md, SHA512_CTX *c)

{

    return SHA512_Final(md, c);

}

int SHA512_Update(SHA512_CTX *c, const void *_data, size_t len)

{

    SHA_LONG64 l;

    unsigned char *p = c->u.p;

    const unsigned char *data = (const unsigned char *)_data;

    if (len == 0)

        return 1;

    l = (c->Nl + (((SHA_LONG64)len) << 3)) & U64(0xffffffffffffffff);

    if (l < c->Nl)

        c->Nh++;

    if (sizeof(len) >= 8)

        c->Nh += (((SHA_LONG64)len) >> 61);

    c->Nl = l;

    if (c->num != 0) {

        size_t n = sizeof(c->u) - c->num;

        if (len < n) {

            memcpy(p + c->num, data, len), c->num += (unsigned int)len;

            return 1;

        } else {

            memcpy(p + c->num, data, n), c->num = 0;

            len -= n, data += n;

            sha512_block_data_order(c, p, 1);

        }

    }

    if (len >= sizeof(c->u)) {

#ifndef SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA

        if ((size_t)data % sizeof(c->u.d[0]) != 0)

            while (len >= sizeof(c->u))

                memcpy(p, data, sizeof(c->u)),

                    sha512_block_data_order(c, p, 1),

                    len -= sizeof(c->u), data += sizeof(c->u);

        else

#endif

            sha512_block_data_order(c, data, len / sizeof(c->u)),

                data += len, len %= sizeof(c->u), data -= len;

    }

    if (len != 0)

        memcpy(p, data, len), c->num = (int)len;

    return 1;

}

int SHA384_Update(SHA512_CTX *c, const void *data, size_t len)

{

    return SHA512_Update(c, data, len);

}

void SHA512_Transform(SHA512_CTX *c, const unsigned char *data)

{

#ifndef SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA

    if ((size_t)data % sizeof(c->u.d[0]) != 0)

        memcpy(c->u.p, data, sizeof(c->u.p)), data = c->u.p;

#endif

    sha512_block_data_order(c, data, 1);

}

#ifndef SHA512_ASM

static const SHA_LONG64 K512[80] = {

    U64(0x428a2f98d728ae22), U64(0x7137449123ef65cd),

    U64(0xb5c0fbcfec4d3b2f), U64(0xe9b5dba58189dbbc),

    U64(0x3956c25bf348b538), U64(0x59f111f1b605d019),

    U64(0x923f82a4af194f9b), U64(0xab1c5ed5da6d8118),

    U64(0xd807aa98a3030242), U64(0x12835b0145706fbe),

    U64(0x243185be4ee4b28c), U64(0x550c7dc3d5ffb4e2),

    U64(0x72be5d74f27b896f), U64(0x80deb1fe3b1696b1),

    U64(0x9bdc06a725c71235), U64(0xc19bf174cf692694),

    U64(0xe49b69c19ef14ad2), U64(0xefbe4786384f25e3),

    U64(0x0fc19dc68b8cd5b5), U64(0x240ca1cc77ac9c65),

    U64(0x2de92c6f592b0275), U64(0x4a7484aa6ea6e483),

    U64(0x5cb0a9dcbd41fbd4), U64(0x76f988da831153b5),

    U64(0x983e5152ee66dfab), U64(0xa831c66d2db43210),

    U64(0xb00327c898fb213f), U64(0xbf597fc7beef0ee4),

    U64(0xc6e00bf33da88fc2), U64(0xd5a79147930aa725),

    U64(0x06ca6351e003826f), U64(0x142929670a0e6e70),

    U64(0x27b70a8546d22ffc), U64(0x2e1b21385c26c926),

    U64(0x4d2c6dfc5ac42aed), U64(0x53380d139d95b3df),

    U64(0x650a73548baf63de), U64(0x766a0abb3c77b2a8),

    U64(0x81c2c92e47edaee6), U64(0x92722c851482353b),

    U64(0xa2bfe8a14cf10364), U64(0xa81a664bbc423001),

    U64(0xc24b8b70d0f89791), U64(0xc76c51a30654be30),

    U64(0xd192e819d6ef5218), U64(0xd69906245565a910),

    U64(0xf40e35855771202a), U64(0x106aa07032bbd1b8),

    U64(0x19a4c116b8d2d0c8), U64(0x1e376c085141ab53),

    U64(0x2748774cdf8eeb99), U64(0x34b0bcb5e19b48a8),

    U64(0x391c0cb3c5c95a63), U64(0x4ed8aa4ae3418acb),

    U64(0x5b9cca4f7763e373), U64(0x682e6ff3d6b2b8a3),

    U64(0x748f82ee5defb2fc), U64(0x78a5636f43172f60),

    U64(0x84c87814a1f0ab72), U64(0x8cc702081a6439ec),

    U64(0x90befffa23631e28), U64(0xa4506cebde82bde9),

    U64(0xbef9a3f7b2c67915), U64(0xc67178f2e372532b),

    U64(0xca273eceea26619c), U64(0xd186b8c721c0c207),

    U64(0xeada7dd6cde0eb1e), U64(0xf57d4f7fee6ed178),

    U64(0x06f067aa72176fba), U64(0x0a637dc5a2c898a6),

    U64(0x113f9804bef90dae), U64(0x1b710b35131c471b),

    U64(0x28db77f523047d84), U64(0x32caab7b40c72493),

    U64(0x3c9ebe0a15c9bebc), U64(0x431d67c49c100d4c),

    U64(0x4cc5d4becb3e42b6), U64(0x597f299cfc657e2a),

    U64(0x5fcb6fab3ad6faec), U64(0x6c44198c4a475817)

};

#ifndef PEDANTIC

#if defined(__GNUC__) && __GNUC__ >= 2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)

#if defined(__x86_64) || defined(__x86_64__)

#define ROTR(a, n) ({ SHA_LONG64 ret;             \

                                asm ("rorq %1,%0"       \

                                : "=r"(ret)             \

                                : "J"(n),"0"(a)         \

                                : "cc"); ret; })

#if !defined(B_ENDIAN)

#define PULL64(x) ({ SHA_LONG64 ret=*((const SHA_LONG64 *)(&(x)));  \

                                asm ("bswapq    %0"             \

                                : "=r"(ret)                     \

                                : "0"(ret)); ret; })

#endif

#elif (defined(__i386) || defined(__i386__)) && !defined(B_ENDIAN)

#if defined(I386_ONLY)

#define PULL64(x) ({ const unsigned int *p=(const unsigned int *)(&(x));\

                          unsigned int hi=p[0],lo=p[1];          \

                                asm("xchgb %%ah,%%al;xchgb %%dh,%%dl;"\

                                    "roll $16,%%eax; roll $16,%%edx; "\

                                    "xchgb %%ah,%%al;xchgb %%dh,%%dl;"\

                                : "=a"(lo),"=d"(hi)             \

                                : "0"(lo),"1"(hi) : "cc");      \

                                ((SHA_LONG64)hi)<<32|lo; })

#else

#define PULL64(x) ({ const unsigned int *p=(const unsigned int *)(&(x));\

                          unsigned int hi=p[0],lo=p[1];         \

                                asm ("bswapl %0; bswapl %1;"    \

                                : "=r"(lo),"=r"(hi)             \

                                : "0"(lo),"1"(hi));             \

                                ((SHA_LONG64)hi)<<32|lo; })

#endif

#elif (defined(_ARCH_PPC) && defined(__64BIT__)) || defined(_ARCH_PPC64)

#define ROTR(a, n) ({ SHA_LONG64 ret;             \

                                asm ("rotrdi %0,%1,%2"  \

                                : "=r"(ret)             \

                                : "r"(a),"K"(n)); ret; })

#elif defined(__aarch64__)

#define ROTR(a, n) ({ SHA_LONG64 ret;             \

                                asm ("ror %0,%1,%2"     \

                                : "=r"(ret)             \

                                : "r"(a),"I"(n)); ret; })

#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__

#define PULL64(x) ({ SHA_LONG64 ret;                     \

                                asm ("rev       %0,%1"          \

                                : "=r"(ret)                     \

                                : "r"(*((const SHA_LONG64 *)(&(x))))); ret; })

#endif

#endif

#elif defined(_MSC_VER)

#if defined(_WIN64) /* applies to both IA-64 and AMD64 */

#pragma intrinsic(_rotr64)

#define ROTR(a, n) _rotr64((a), n)

#endif

#if defined(_M_IX86) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)

#if defined(I386_ONLY)

static SHA_LONG64 __fastcall __pull64be(const void *x)

{

    _asm mov edx, [ecx + 0] _asm mov eax, [ecx + 4] _asm xchg dh, dl _asm xchg ah, al _asm rol edx, 16 _asm rol eax, 16 _asm xchg dh, dl _asm xchg ah, al

}

#else

static SHA_LONG64 __fastcall __pull64be(const void *x) {

    _asm mov edx, [ecx + 0] _asm mov eax, [ecx + 4] _asm bswap edx _asm bswap eax

}

#endif

#define PULL64(x) __pull64be(&(x))

#endif

#endif

#endif

#ifndef PULL64

#define B(x, j) (((SHA_LONG64)(*(((const unsigned char *)(&x)) + j))) << ((7 - j) * 8))

#define PULL64(x) (B(x, 0) | B(x, 1) | B(x, 2) | B(x, 3) | B(x, 4) | B(x, 5) | B(x, 6) | B(x, 7))

#endif

#ifndef ROTR

#define ROTR(x, s) (((x) >> s) | (x) << (64 - s))

#endif

#define Sigma0(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39))

#define Sigma1(x) (ROTR((x), 14) ^ ROTR((x), 18) ^ ROTR((x), 41))

#define sigma0(x) (ROTR((x), 1) ^ ROTR((x), 8) ^ ((x) >> 7))

#define sigma1(x) (ROTR((x), 19) ^ ROTR((x), 61) ^ ((x) >> 6))

#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))

#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))

#if defined(__i386) || defined(__i386__) || defined(_M_IX86)

/*

 * This code should give better results on 32-bit CPU with less than

 * ~24 registers, both size and performance wise...

 */

static void sha512_block_data_order(SHA512_CTX *ctx, const void *in,

    size_t num)

{

    const SHA_LONG64 *W = in;

    SHA_LONG64 A, E, T;

    SHA_LONG64 X[9 + 80], *F;

    int i;

    while (num--) {

        F = X + 80;

        A = ctx->h[0];

        F[1] = ctx->h[1];

        F[2] = ctx->h[2];

        F[3] = ctx->h[3];

        E = ctx->h[4];

        F[5] = ctx->h[5];

        F[6] = ctx->h[6];

        F[7] = ctx->h[7];

        for (i = 0; i < 16; i++, F--) {

#ifdef B_ENDIAN

            T = W[i];

#else

            T = PULL64(W[i]);

#endif

            F[0] = A;

            F[4] = E;

            F[8] = T;

            T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];

            E = F[3] + T;

            A = T + Sigma0(A) + Maj(A, F[1], F[2]);

        }

        for (; i < 80; i++, F--) {

            T = sigma0(F[8 + 16 - 1]);

            T += sigma1(F[8 + 16 - 14]);

            T += F[8 + 16] + F[8 + 16 - 9];

            F[0] = A;

            F[4] = E;

            F[8] = T;

            T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];

            E = F[3] + T;

            A = T + Sigma0(A) + Maj(A, F[1], F[2]);

        }

        ctx->h[0] += A;

        ctx->h[1] += F[1];

        ctx->h[2] += F[2];

        ctx->h[3] += F[3];

        ctx->h[4] += E;

        ctx->h[5] += F[5];

        ctx->h[6] += F[6];

        ctx->h[7] += F[7];

        W += SHA_LBLOCK;

    }

}

#elif defined(OPENSSL_SMALL_FOOTPRINT)

static void sha512_block_data_order(SHA512_CTX *ctx, const void *in,

    size_t num)

{

    const SHA_LONG64 *W = in;

    SHA_LONG64 a, b, c, d, e, f, g, h, s0, s1, T1, T2;

    SHA_LONG64 X[16];

    int i;

    while (num--) {

        a = ctx->h[0];

        b = ctx->h[1];

        c = ctx->h[2];

        d = ctx->h[3];

        e = ctx->h[4];

        f = ctx->h[5];

        g = ctx->h[6];

        h = ctx->h[7];

        for (i = 0; i < 16; i++) {

#ifdef B_ENDIAN

            T1 = X[i] = W[i];

#else

            T1 = X[i] = PULL64(W[i]);

#endif

            T1 += h + Sigma1(e) + Ch(e, f, g) + K512[i];

            T2 = Sigma0(a) + Maj(a, b, c);

            h = g;

            g = f;

            f = e;

            e = d + T1;

            d = c;

            c = b;

            b = a;

            a = T1 + T2;

        }

        for (; i < 80; i++) {

            s0 = X[(i + 1) & 0x0f];

            s0 = sigma0(s0);

            s1 = X[(i + 14) & 0x0f];

            s1 = sigma1(s1);

            T1 = X[i & 0xf] += s0 + s1 + X[(i + 9) & 0xf];

            T1 += h + Sigma1(e) + Ch(e, f, g) + K512[i];

            T2 = Sigma0(a) + Maj(a, b, c);

            h = g;

            g = f;

            f = e;

            e = d + T1;

            d = c;

            c = b;

            b = a;

            a = T1 + T2;

        }

        ctx->h[0] += a;

        ctx->h[1] += b;

        ctx->h[2] += c;

        ctx->h[3] += d;

        ctx->h[4] += e;

        ctx->h[5] += f;

        ctx->h[6] += g;

        ctx->h[7] += h;

        W += SHA_LBLOCK;

    }

}

#else

#define ROUND_00_15(i, a, b, c, d, e, f, g, h)       \

    do {                                             \

        T1 += h + Sigma1(e) + Ch(e, f, g) + K512[i]; \

        h = Sigma0(a) + Maj(a, b, c);                \

        d += T1;                                     \

        h += T1;                                     \

    } while (0)

#define ROUND_16_80(i, j, a, b, c, d, e, f, g, h, X)       \

    do {                                                   \

        s0 = X[(j + 1) & 0x0f];                            \

        s0 = sigma0(s0);                                   \

        s1 = X[(j + 14) & 0x0f];                           \

        s1 = sigma1(s1);                                   \

        T1 = X[(j) & 0x0f] += s0 + s1 + X[(j + 9) & 0x0f]; \

        ROUND_00_15(i + j, a, b, c, d, e, f, g, h);        \

    } while (0)

static void sha512_block_data_order(SHA512_CTX *ctx, const void *in,

    size_t num)

{

    const SHA_LONG64 *W = in;

    SHA_LONG64 a, b, c, d, e, f, g, h, s0, s1, T1;

    SHA_LONG64 X[16];

    int i;

    while (num--) {

        a = ctx->h[0];

        b = ctx->h[1];

        c = ctx->h[2];

        d = ctx->h[3];

        e = ctx->h[4];

        f = ctx->h[5];

        g = ctx->h[6];

        h = ctx->h[7];

#ifdef B_ENDIAN

        T1 = X[0] = W[0];

        ROUND_00_15(0, a, b, c, d, e, f, g, h);

        T1 = X[1] = W[1];

        ROUND_00_15(1, h, a, b, c, d, e, f, g);

        T1 = X[2] = W[2];

        ROUND_00_15(2, g, h, a, b, c, d, e, f);

        T1 = X[3] = W[3];

        ROUND_00_15(3, f, g, h, a, b, c, d, e);

        T1 = X[4] = W[4];

        ROUND_00_15(4, e, f, g, h, a, b, c, d);

        T1 = X[5] = W[5];

        ROUND_00_15(5, d, e, f, g, h, a, b, c);

        T1 = X[6] = W[6];

        ROUND_00_15(6, c, d, e, f, g, h, a, b);

        T1 = X[7] = W[7];

        ROUND_00_15(7, b, c, d, e, f, g, h, a);

        T1 = X[8] = W[8];

        ROUND_00_15(8, a, b, c, d, e, f, g, h);

        T1 = X[9] = W[9];

        ROUND_00_15(9, h, a, b, c, d, e, f, g);

        T1 = X[10] = W[10];

        ROUND_00_15(10, g, h, a, b, c, d, e, f);

        T1 = X[11] = W[11];

        ROUND_00_15(11, f, g, h, a, b, c, d, e);

        T1 = X[12] = W[12];

        ROUND_00_15(12, e, f, g, h, a, b, c, d);

        T1 = X[13] = W[13];

        ROUND_00_15(13, d, e, f, g, h, a, b, c);

        T1 = X[14] = W[14];

        ROUND_00_15(14, c, d, e, f, g, h, a, b);

        T1 = X[15] = W[15];

        ROUND_00_15(15, b, c, d, e, f, g, h, a);

#else

        T1 = X[0] = PULL64(W[0]);

        ROUND_00_15(0, a, b, c, d, e, f, g, h);

        T1 = X[1] = PULL64(W[1]);

        ROUND_00_15(1, h, a, b, c, d, e, f, g);

        T1 = X[2] = PULL64(W[2]);

        ROUND_00_15(2, g, h, a, b, c, d, e, f);

        T1 = X[3] = PULL64(W[3]);

        ROUND_00_15(3, f, g, h, a, b, c, d, e);

        T1 = X[4] = PULL64(W[4]);

        ROUND_00_15(4, e, f, g, h, a, b, c, d);

        T1 = X[5] = PULL64(W[5]);

        ROUND_00_15(5, d, e, f, g, h, a, b, c);

        T1 = X[6] = PULL64(W[6]);

        ROUND_00_15(6, c, d, e, f, g, h, a, b);

        T1 = X[7] = PULL64(W[7]);

        ROUND_00_15(7, b, c, d, e, f, g, h, a);

        T1 = X[8] = PULL64(W[8]);

        ROUND_00_15(8, a, b, c, d, e, f, g, h);

        T1 = X[9] = PULL64(W[9]);

        ROUND_00_15(9, h, a, b, c, d, e, f, g);

        T1 = X[10] = PULL64(W[10]);

        ROUND_00_15(10, g, h, a, b, c, d, e, f);

        T1 = X[11] = PULL64(W[11]);

        ROUND_00_15(11, f, g, h, a, b, c, d, e);

        T1 = X[12] = PULL64(W[12]);

        ROUND_00_15(12, e, f, g, h, a, b, c, d);

        T1 = X[13] = PULL64(W[13]);

        ROUND_00_15(13, d, e, f, g, h, a, b, c);

        T1 = X[14] = PULL64(W[14]);

        ROUND_00_15(14, c, d, e, f, g, h, a, b);

        T1 = X[15] = PULL64(W[15]);

        ROUND_00_15(15, b, c, d, e, f, g, h, a);

#endif

        for (i = 16; i < 80; i += 16) {

            ROUND_16_80(i, 0, a, b, c, d, e, f, g, h, X);

            ROUND_16_80(i, 1, h, a, b, c, d, e, f, g, X);

            ROUND_16_80(i, 2, g, h, a, b, c, d, e, f, X);

            ROUND_16_80(i, 3, f, g, h, a, b, c, d, e, X);

            ROUND_16_80(i, 4, e, f, g, h, a, b, c, d, X);

            ROUND_16_80(i, 5, d, e, f, g, h, a, b, c, X);

            ROUND_16_80(i, 6, c, d, e, f, g, h, a, b, X);

            ROUND_16_80(i, 7, b, c, d, e, f, g, h, a, X);

            ROUND_16_80(i, 8, a, b, c, d, e, f, g, h, X);

            ROUND_16_80(i, 9, h, a, b, c, d, e, f, g, X);

            ROUND_16_80(i, 10, g, h, a, b, c, d, e, f, X);

            ROUND_16_80(i, 11, f, g, h, a, b, c, d, e, X);

            ROUND_16_80(i, 12, e, f, g, h, a, b, c, d, X);

            ROUND_16_80(i, 13, d, e, f, g, h, a, b, c, X);

            ROUND_16_80(i, 14, c, d, e, f, g, h, a, b, X);

            ROUND_16_80(i, 15, b, c, d, e, f, g, h, a, X);

        }

        ctx->h[0] += a;

        ctx->h[1] += b;

        ctx->h[2] += c;

        ctx->h[3] += d;

        ctx->h[4] += e;

        ctx->h[5] += f;

        ctx->h[6] += g;

        ctx->h[7] += h;

        W += SHA_LBLOCK;

    }

}

#endif

#endif /* SHA512_ASM */