/*
 * Copyright 1995-2016 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
 */

#include <stdlib.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/ripemd.h>

/*
 * DO EXAMINE COMMENTS IN crypto/md5/md5_local.h & crypto/md5/md5_dgst.c
 * FOR EXPLANATIONS ON FOLLOWING "CODE."
 */
#ifdef RMD160_ASM
#if defined(__i386) || defined(__i386__) || defined(_M_IX86)
#define ripemd160_block_data_order ripemd160_block_asm_data_order
#endif
#endif

void ripemd160_block_data_order(RIPEMD160_CTX *c, const void *p, size_t num);

#define DATA_ORDER_IS_LITTLE_ENDIAN

#define HASH_LONG RIPEMD160_LONG
#define HASH_CTX RIPEMD160_CTX
#define HASH_CBLOCK RIPEMD160_CBLOCK
#define HASH_UPDATE RIPEMD160_Update
#define HASH_TRANSFORM RIPEMD160_Transform
#define HASH_FINAL RIPEMD160_Final
#define HASH_MAKE_STRING(c, s)   \
    do {                         \
        unsigned long ll;        \
        ll = (c)->A;             \
        (void)HOST_l2c(ll, (s)); \
        ll = (c)->B;             \
        (void)HOST_l2c(ll, (s)); \
        ll = (c)->C;             \
        (void)HOST_l2c(ll, (s)); \
        ll = (c)->D;             \
        (void)HOST_l2c(ll, (s)); \
        ll = (c)->E;             \
        (void)HOST_l2c(ll, (s)); \
    } while (0)
#define HASH_BLOCK_DATA_ORDER ripemd160_block_data_order

#include "crypto/md32_common.h"

/*
 * Transformed F2 and F4 are courtesy of Wei Dai
 */
#define F1(x, y, z) ((x) ^ (y) ^ (z))
#define F2(x, y, z) ((((y) ^ (z)) & (x)) ^ (z))
#define F3(x, y, z) (((~(y)) | (x)) ^ (z))
#define F4(x, y, z) ((((x) ^ (y)) & (z)) ^ (y))
#define F5(x, y, z) (((~(z)) | (y)) ^ (x))

#define RIPEMD160_A 0x67452301L
#define RIPEMD160_B 0xEFCDAB89L
#define RIPEMD160_C 0x98BADCFEL
#define RIPEMD160_D 0x10325476L
#define RIPEMD160_E 0xC3D2E1F0L

#include "rmdconst.h"

#define RIP1(a, b, c, d, e, w, s) \
    {                             \
        a += F1(b, c, d) + X(w);  \
        a = ROTATE(a, s) + e;     \
        c = ROTATE(c, 10);        \
    }

#define RIP2(a, b, c, d, e, w, s, K) \
    {                                \
        a += F2(b, c, d) + X(w) + K; \
        a = ROTATE(a, s) + e;        \
        c = ROTATE(c, 10);           \
    }

#define RIP3(a, b, c, d, e, w, s, K) \
    {                                \
        a += F3(b, c, d) + X(w) + K; \
        a = ROTATE(a, s) + e;        \
        c = ROTATE(c, 10);           \
    }

#define RIP4(a, b, c, d, e, w, s, K) \
    {                                \
        a += F4(b, c, d) + X(w) + K; \
        a = ROTATE(a, s) + e;        \
        c = ROTATE(c, 10);           \
    }

#define RIP5(a, b, c, d, e, w, s, K) \
    {                                \
        a += F5(b, c, d) + X(w) + K; \
        a = ROTATE(a, s) + e;        \
        c = ROTATE(c, 10);           \
    }