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Diffstat (limited to 'contrib/opie/libopie/md4c.c')
-rw-r--r-- | contrib/opie/libopie/md4c.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/contrib/opie/libopie/md4c.c b/contrib/opie/libopie/md4c.c deleted file mode 100644 index acc88578b04ee..0000000000000 --- a/contrib/opie/libopie/md4c.c +++ /dev/null @@ -1,267 +0,0 @@ -/* md4c.c: "RSA Data Security, Inc. MD4 Message-Digest Algorithm" - -%%% portions-copyright-cmetz-96 -Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights -Reserved. The Inner Net License Version 2 applies to these portions of -the software. -You should have received a copy of the license with this software. If -you didn't get a copy, you may request one from <license@inner.net>. - -Portions of this software are Copyright 1995 by Randall Atkinson and Dan -McDonald, All Rights Reserved. All Rights under this copyright are assigned -to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and -License Agreement applies to this software. - - History: - - Modified by cmetz for OPIE 2.2. Use FUNCTION declaration et al. - Use the real memcpy() and memset(). Use unified context - structure. - Modified at NRL for OPIE 2.0. - Originally from RSADSI reference code. -*/ -/* Copyright (C) 1990-2, RSA Data Security, Inc. All rights reserved. - - License to copy and use this software is granted provided that it - is identified as the "RSA Data Security, Inc. MD4 Message-Digest - Algorithm" in all material mentioning or referencing this software - or this function. - - License is also granted to make and use derivative works provided - that such works are identified as "derived from the RSA Data - Security, Inc. MD4 Message-Digest Algorithm" in all material - mentioning or referencing the derived work. - - RSA Data Security, Inc. makes no representations concerning either - the merchantability of this software or the suitability of this - software for any particular purpose. It is provided "as is" - without express or implied warranty of any kind. - - These notices must be retained in any copies of any part of this - documentation and/or software. - */ - -#include "opie_cfg.h" -#include "opie.h" - -/* Constants for MD4Transform routine. - */ -#define S11 3 -#define S12 7 -#define S13 11 -#define S14 19 -#define S21 3 -#define S22 5 -#define S23 9 -#define S24 13 -#define S31 3 -#define S32 9 -#define S33 11 -#define S34 15 - -static VOIDRET MD4Transform __P((UINT4[4], unsigned char[64])); -static VOIDRET Encode __P((unsigned char *, UINT4 *, unsigned int)); -static VOIDRET Decode __P((UINT4 *, unsigned char *, unsigned int)); - -static unsigned char PADDING[64] = -{ - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -/* F, G and H are basic MD4 functions. - */ -#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) -#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z))) -#define H(x, y, z) ((x) ^ (y) ^ (z)) - -/* ROTATE_LEFT rotates x left n bits. - */ -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) - -/* FF, GG and HH are transformations for rounds 1, 2 and 3 */ -/* Rotation is separate from addition to prevent recomputation */ - -#define FF(a, b, c, d, x, s) { \ - (a) += F ((b), (c), (d)) + (x); \ - (a) = ROTATE_LEFT ((a), (s)); \ - } -#define GG(a, b, c, d, x, s) { \ - (a) += G ((b), (c), (d)) + (x) + (UINT4)0x5a827999; \ - (a) = ROTATE_LEFT ((a), (s)); \ - } -#define HH(a, b, c, d, x, s) { \ - (a) += H ((b), (c), (d)) + (x) + (UINT4)0x6ed9eba1; \ - (a) = ROTATE_LEFT ((a), (s)); \ - } - -/* MD4 initialization. Begins an MD4 operation, writing a new context. - */ -VOIDRET opiemd4init FUNCTION((context), struct opiemdx_ctx *context) -{ - context->count[0] = context->count[1] = 0; - - /* Load magic initialization constants. */ - context->state[0] = 0x67452301; - context->state[1] = 0xefcdab89; - context->state[2] = 0x98badcfe; - context->state[3] = 0x10325476; -} - -/* MD4 block update operation. Continues an MD4 message-digest - operation, processing another message block, and updating the - context. - */ -VOIDRET opiemd4update FUNCTION((context, input, inputLen), struct opiemdx_ctx *context AND unsigned char *input AND unsigned int inputLen) -{ - unsigned int i, index, partLen; - - /* Compute number of bytes mod 64 */ - index = (unsigned int) ((context->count[0] >> 3) & 0x3F); - /* Update number of bits */ - if ((context->count[0] += ((UINT4) inputLen << 3)) - < ((UINT4) inputLen << 3)) - context->count[1]++; - context->count[1] += ((UINT4) inputLen >> 29); - - partLen = 64 - index; - - /* Transform as many times as possible. */ - if (inputLen >= partLen) { - memcpy((POINTER) & context->buffer[index], (POINTER) input, partLen); - MD4Transform(context->state, context->buffer); - - for (i = partLen; i + 63 < inputLen; i += 64) - MD4Transform(context->state, &input[i]); - - index = 0; - } else - i = 0; - - /* Buffer remaining input */ - memcpy((POINTER) & context->buffer[index], (POINTER) & input[i], inputLen - i); -} - -/* MD4 finalization. Ends an MD4 message-digest operation, writing the - the message digest and zeroizing the context. - */ -VOIDRET opiemd4final FUNCTION((digest, context), unsigned char *digest AND struct opiemdx_ctx *context) -{ - unsigned char bits[8]; - unsigned int index, padLen; - - /* Save number of bits */ - Encode(bits, context->count, 8); - - /* Pad out to 56 mod 64. */ - index = (unsigned int) ((context->count[0] >> 3) & 0x3f); - padLen = (index < 56) ? (56 - index) : (120 - index); - opiemd4update(context, PADDING, padLen); - - /* Append length (before padding) */ - opiemd4update(context, bits, 8); - /* Store state in digest */ - Encode(digest, context->state, 16); - - /* Zeroize sensitive information. */ - memset((POINTER) context, 0, sizeof(*context)); -} - -/* MD4 basic transformation. Transforms state based on block. - */ -static VOIDRET MD4Transform FUNCTION((state, block), UINT4 state[4] AND unsigned char block[64]) -{ - UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; - - Decode(x, block, 64); - - /* Round 1 */ - FF(a, b, c, d, x[0], S11); /* 1 */ - FF(d, a, b, c, x[1], S12); /* 2 */ - FF(c, d, a, b, x[2], S13); /* 3 */ - FF(b, c, d, a, x[3], S14); /* 4 */ - FF(a, b, c, d, x[4], S11); /* 5 */ - FF(d, a, b, c, x[5], S12); /* 6 */ - FF(c, d, a, b, x[6], S13); /* 7 */ - FF(b, c, d, a, x[7], S14); /* 8 */ - FF(a, b, c, d, x[8], S11); /* 9 */ - FF(d, a, b, c, x[9], S12); /* 10 */ - FF(c, d, a, b, x[10], S13); /* 11 */ - FF(b, c, d, a, x[11], S14); /* 12 */ - FF(a, b, c, d, x[12], S11); /* 13 */ - FF(d, a, b, c, x[13], S12); /* 14 */ - FF(c, d, a, b, x[14], S13); /* 15 */ - FF(b, c, d, a, x[15], S14); /* 16 */ - - /* Round 2 */ - GG(a, b, c, d, x[0], S21); /* 17 */ - GG(d, a, b, c, x[4], S22); /* 18 */ - GG(c, d, a, b, x[8], S23); /* 19 */ - GG(b, c, d, a, x[12], S24); /* 20 */ - GG(a, b, c, d, x[1], S21); /* 21 */ - GG(d, a, b, c, x[5], S22); /* 22 */ - GG(c, d, a, b, x[9], S23); /* 23 */ - GG(b, c, d, a, x[13], S24); /* 24 */ - GG(a, b, c, d, x[2], S21); /* 25 */ - GG(d, a, b, c, x[6], S22); /* 26 */ - GG(c, d, a, b, x[10], S23); /* 27 */ - GG(b, c, d, a, x[14], S24); /* 28 */ - GG(a, b, c, d, x[3], S21); /* 29 */ - GG(d, a, b, c, x[7], S22); /* 30 */ - GG(c, d, a, b, x[11], S23); /* 31 */ - GG(b, c, d, a, x[15], S24); /* 32 */ - - /* Round 3 */ - HH(a, b, c, d, x[0], S31); /* 33 */ - HH(d, a, b, c, x[8], S32); /* 34 */ - HH(c, d, a, b, x[4], S33); /* 35 */ - HH(b, c, d, a, x[12], S34); /* 36 */ - HH(a, b, c, d, x[2], S31); /* 37 */ - HH(d, a, b, c, x[10], S32); /* 38 */ - HH(c, d, a, b, x[6], S33); /* 39 */ - HH(b, c, d, a, x[14], S34); /* 40 */ - HH(a, b, c, d, x[1], S31); /* 41 */ - HH(d, a, b, c, x[9], S32); /* 42 */ - HH(c, d, a, b, x[5], S33); /* 43 */ - HH(b, c, d, a, x[13], S34); /* 44 */ - HH(a, b, c, d, x[3], S31); /* 45 */ - HH(d, a, b, c, x[11], S32); /* 46 */ - HH(c, d, a, b, x[7], S33); /* 47 */ - HH(b, c, d, a, x[15], S34); /* 48 */ - - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - - /* Zeroize sensitive information. */ - memset((POINTER) x, 0, sizeof(x)); -} - -/* Encodes input (UINT4) into output (unsigned char). Assumes len is - a multiple of 4. - */ -static VOIDRET Encode FUNCTION((output, input, len), unsigned char *output AND UINT4 *input AND unsigned int len) -{ - unsigned int i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) { - output[j] = (unsigned char) (input[i] & 0xff); - output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff); - output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff); - output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff); - } -} - -/* Decodes input (unsigned char) into output (UINT4). Assumes len is - a multiple of 4. - */ -static VOIDRET Decode FUNCTION((output, input, len), UINT4 *output AND unsigned char *input AND unsigned int len) -{ - unsigned int i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) - output[i] = ((UINT4) input[j]) | (((UINT4) input[j + 1]) << 8) | - (((UINT4) input[j + 2]) << 16) | (((UINT4) input[j + 3]) << 24); -} |