/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |

* All rights reserved. | |

* | |

* This package is an SSL implementation written | |

* by Eric Young (eay@cryptsoft.com). | |

* The implementation was written so as to conform with Netscapes SSL. | |

* | |

* This library is free for commercial and non-commercial use as long as | |

* the following conditions are aheared to. The following conditions | |

* apply to all code found in this distribution, be it the RC4, RSA, | |

* lhash, DES, etc., code; not just the SSL code. The SSL documentation | |

* included with this distribution is covered by the same copyright terms | |

* except that the holder is Tim Hudson (tjh@cryptsoft.com). | |

* | |

* Copyright remains Eric Young's, and as such any Copyright notices in | |

* the code are not to be removed. | |

* If this package is used in a product, Eric Young should be given attribution | |

* as the author of the parts of the library used. | |

* This can be in the form of a textual message at program startup or | |

* in documentation (online or textual) provided with the package. | |

* | |

* Redistribution and use in source and binary forms, with or without | |

* modification, are permitted provided that the following conditions | |

* are met: | |

* 1. Redistributions of source code must retain the copyright | |

* notice, this list of conditions and the following disclaimer. | |

* 2. Redistributions in binary form must reproduce the above copyright | |

* notice, this list of conditions and the following disclaimer in the | |

* documentation and/or other materials provided with the distribution. | |

* 3. All advertising materials mentioning features or use of this software | |

* must display the following acknowledgement: | |

* "This product includes cryptographic software written by | |

* Eric Young (eay@cryptsoft.com)" | |

* The word 'cryptographic' can be left out if the rouines from the library | |

* being used are not cryptographic related :-). | |

* 4. If you include any Windows specific code (or a derivative thereof) from | |

* the apps directory (application code) you must include an acknowledgement: | |

* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |

* | |

* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |

* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |

* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |

* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |

* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |

* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |

* SUCH DAMAGE. | |

* | |

* The licence and distribution terms for any publically available version or | |

* derivative of this code cannot be changed. i.e. this code cannot simply be | |

* copied and put under another distribution licence | |

* [including the GNU Public Licence.] */ | |

#include <openssl/md4.h> | |

#include <stdlib.h> | |

#include <string.h> | |

/* Implemented from RFC1186 The MD4 Message-Digest Algorithm. */ | |

int MD4_Init(MD4_CTX *md4) { | |

memset(md4, 0, sizeof(MD4_CTX)); | |

md4->h[0] = 0x67452301UL; | |

md4->h[1] = 0xefcdab89UL; | |

md4->h[2] = 0x98badcfeUL; | |

md4->h[3] = 0x10325476UL; | |

return 1; | |

} | |

void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num); | |

#define DATA_ORDER_IS_LITTLE_ENDIAN | |

#define HASH_CTX MD4_CTX | |

#define HASH_CBLOCK 64 | |

#define HASH_UPDATE MD4_Update | |

#define HASH_TRANSFORM MD4_Transform | |

#define HASH_FINAL MD4_Final | |

#define HASH_MAKE_STRING(c, s) \ | |

do { \ | |

uint32_t ll; \ | |

ll = (c)->h[0]; \ | |

HOST_l2c(ll, (s)); \ | |

ll = (c)->h[1]; \ | |

HOST_l2c(ll, (s)); \ | |

ll = (c)->h[2]; \ | |

HOST_l2c(ll, (s)); \ | |

ll = (c)->h[3]; \ | |

HOST_l2c(ll, (s)); \ | |

} while (0) | |

#define HASH_BLOCK_DATA_ORDER md4_block_data_order | |

#include "../digest/md32_common.h" | |

/* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be | |

* simplified to the code below. Wei attributes these optimizations | |

* to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. */ | |

#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d)) | |

#define G(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d))) | |

#define H(b, c, d) ((b) ^ (c) ^ (d)) | |

#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n)))) | |

#define R0(a, b, c, d, k, s, t) \ | |

{ \ | |

a += ((k) + (t)+F((b), (c), (d))); \ | |

a = ROTATE(a, s); \ | |

}; | |

#define R1(a, b, c, d, k, s, t) \ | |

{ \ | |

a += ((k) + (t)+G((b), (c), (d))); \ | |

a = ROTATE(a, s); \ | |

}; | |

#define R2(a, b, c, d, k, s, t) \ | |

{ \ | |

a += ((k) + (t)+H((b), (c), (d))); \ | |

a = ROTATE(a, s); \ | |

}; | |

void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num) { | |

uint32_t A, B, C, D, l; | |

uint32_t X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15; | |

A = state[0]; | |

B = state[1]; | |

C = state[2]; | |

D = state[3]; | |

for (; num--;) { | |

HOST_c2l(data, l); | |

X0 = l; | |

HOST_c2l(data, l); | |

X1 = l; | |

/* Round 0 */ | |

R0(A, B, C, D, X0, 3, 0); | |

HOST_c2l(data, l); | |

X2 = l; | |

R0(D, A, B, C, X1, 7, 0); | |

HOST_c2l(data, l); | |

X3 = l; | |

R0(C, D, A, B, X2, 11, 0); | |

HOST_c2l(data, l); | |

X4 = l; | |

R0(B, C, D, A, X3, 19, 0); | |

HOST_c2l(data, l); | |

X5 = l; | |

R0(A, B, C, D, X4, 3, 0); | |

HOST_c2l(data, l); | |

X6 = l; | |

R0(D, A, B, C, X5, 7, 0); | |

HOST_c2l(data, l); | |

X7 = l; | |

R0(C, D, A, B, X6, 11, 0); | |

HOST_c2l(data, l); | |

X8 = l; | |

R0(B, C, D, A, X7, 19, 0); | |

HOST_c2l(data, l); | |

X9 = l; | |

R0(A, B, C, D, X8, 3, 0); | |

HOST_c2l(data, l); | |

X10 = l; | |

R0(D, A, B, C, X9, 7, 0); | |

HOST_c2l(data, l); | |

X11 = l; | |

R0(C, D, A, B, X10, 11, 0); | |

HOST_c2l(data, l); | |

X12 = l; | |

R0(B, C, D, A, X11, 19, 0); | |

HOST_c2l(data, l); | |

X13 = l; | |

R0(A, B, C, D, X12, 3, 0); | |

HOST_c2l(data, l); | |

X14 = l; | |

R0(D, A, B, C, X13, 7, 0); | |

HOST_c2l(data, l); | |

X15 = l; | |

R0(C, D, A, B, X14, 11, 0); | |

R0(B, C, D, A, X15, 19, 0); | |

/* Round 1 */ | |

R1(A, B, C, D, X0, 3, 0x5A827999L); | |

R1(D, A, B, C, X4, 5, 0x5A827999L); | |

R1(C, D, A, B, X8, 9, 0x5A827999L); | |

R1(B, C, D, A, X12, 13, 0x5A827999L); | |

R1(A, B, C, D, X1, 3, 0x5A827999L); | |

R1(D, A, B, C, X5, 5, 0x5A827999L); | |

R1(C, D, A, B, X9, 9, 0x5A827999L); | |

R1(B, C, D, A, X13, 13, 0x5A827999L); | |

R1(A, B, C, D, X2, 3, 0x5A827999L); | |

R1(D, A, B, C, X6, 5, 0x5A827999L); | |

R1(C, D, A, B, X10, 9, 0x5A827999L); | |

R1(B, C, D, A, X14, 13, 0x5A827999L); | |

R1(A, B, C, D, X3, 3, 0x5A827999L); | |

R1(D, A, B, C, X7, 5, 0x5A827999L); | |

R1(C, D, A, B, X11, 9, 0x5A827999L); | |

R1(B, C, D, A, X15, 13, 0x5A827999L); | |

/* Round 2 */ | |

R2(A, B, C, D, X0, 3, 0x6ED9EBA1L); | |

R2(D, A, B, C, X8, 9, 0x6ED9EBA1L); | |

R2(C, D, A, B, X4, 11, 0x6ED9EBA1L); | |

R2(B, C, D, A, X12, 15, 0x6ED9EBA1L); | |

R2(A, B, C, D, X2, 3, 0x6ED9EBA1L); | |

R2(D, A, B, C, X10, 9, 0x6ED9EBA1L); | |

R2(C, D, A, B, X6, 11, 0x6ED9EBA1L); | |

R2(B, C, D, A, X14, 15, 0x6ED9EBA1L); | |

R2(A, B, C, D, X1, 3, 0x6ED9EBA1L); | |

R2(D, A, B, C, X9, 9, 0x6ED9EBA1L); | |

R2(C, D, A, B, X5, 11, 0x6ED9EBA1L); | |

R2(B, C, D, A, X13, 15, 0x6ED9EBA1L); | |

R2(A, B, C, D, X3, 3, 0x6ED9EBA1L); | |

R2(D, A, B, C, X11, 9, 0x6ED9EBA1L); | |

R2(C, D, A, B, X7, 11, 0x6ED9EBA1L); | |

R2(B, C, D, A, X15, 15, 0x6ED9EBA1L); | |

A = state[0] += A; | |

B = state[1] += B; | |

C = state[2] += C; | |

D = state[3] += D; | |

} | |

} |