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RetroZilla/security/nss/lib/freebl/md5.c
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifdef FREEBL_NO_DEPEND
#include "stubs.h"
#endif
#include "prerr.h"
#include "secerr.h"
#include "prtypes.h"
#include "prlong.h"
#include "blapi.h"
#define MD5_HASH_LEN 16
#define MD5_BUFFER_SIZE 64
#define MD5_END_BUFFER (MD5_BUFFER_SIZE - 8)
#define CV0_1 0x67452301
#define CV0_2 0xefcdab89
#define CV0_3 0x98badcfe
#define CV0_4 0x10325476
#define T1_0 0xd76aa478
#define T1_1 0xe8c7b756
#define T1_2 0x242070db
#define T1_3 0xc1bdceee
#define T1_4 0xf57c0faf
#define T1_5 0x4787c62a
#define T1_6 0xa8304613
#define T1_7 0xfd469501
#define T1_8 0x698098d8
#define T1_9 0x8b44f7af
#define T1_10 0xffff5bb1
#define T1_11 0x895cd7be
#define T1_12 0x6b901122
#define T1_13 0xfd987193
#define T1_14 0xa679438e
#define T1_15 0x49b40821
#define T2_0 0xf61e2562
#define T2_1 0xc040b340
#define T2_2 0x265e5a51
#define T2_3 0xe9b6c7aa
#define T2_4 0xd62f105d
#define T2_5 0x02441453
#define T2_6 0xd8a1e681
#define T2_7 0xe7d3fbc8
#define T2_8 0x21e1cde6
#define T2_9 0xc33707d6
#define T2_10 0xf4d50d87
#define T2_11 0x455a14ed
#define T2_12 0xa9e3e905
#define T2_13 0xfcefa3f8
#define T2_14 0x676f02d9
#define T2_15 0x8d2a4c8a
#define T3_0 0xfffa3942
#define T3_1 0x8771f681
#define T3_2 0x6d9d6122
#define T3_3 0xfde5380c
#define T3_4 0xa4beea44
#define T3_5 0x4bdecfa9
#define T3_6 0xf6bb4b60
#define T3_7 0xbebfbc70
#define T3_8 0x289b7ec6
#define T3_9 0xeaa127fa
#define T3_10 0xd4ef3085
#define T3_11 0x04881d05
#define T3_12 0xd9d4d039
#define T3_13 0xe6db99e5
#define T3_14 0x1fa27cf8
#define T3_15 0xc4ac5665
#define T4_0 0xf4292244
#define T4_1 0x432aff97
#define T4_2 0xab9423a7
#define T4_3 0xfc93a039
#define T4_4 0x655b59c3
#define T4_5 0x8f0ccc92
#define T4_6 0xffeff47d
#define T4_7 0x85845dd1
#define T4_8 0x6fa87e4f
#define T4_9 0xfe2ce6e0
#define T4_10 0xa3014314
#define T4_11 0x4e0811a1
#define T4_12 0xf7537e82
#define T4_13 0xbd3af235
#define T4_14 0x2ad7d2bb
#define T4_15 0xeb86d391
#define R1B0 0
#define R1B1 1
#define R1B2 2
#define R1B3 3
#define R1B4 4
#define R1B5 5
#define R1B6 6
#define R1B7 7
#define R1B8 8
#define R1B9 9
#define R1B10 10
#define R1B11 11
#define R1B12 12
#define R1B13 13
#define R1B14 14
#define R1B15 15
#define R2B0 1
#define R2B1 6
#define R2B2 11
#define R2B3 0
#define R2B4 5
#define R2B5 10
#define R2B6 15
#define R2B7 4
#define R2B8 9
#define R2B9 14
#define R2B10 3
#define R2B11 8
#define R2B12 13
#define R2B13 2
#define R2B14 7
#define R2B15 12
#define R3B0 5
#define R3B1 8
#define R3B2 11
#define R3B3 14
#define R3B4 1
#define R3B5 4
#define R3B6 7
#define R3B7 10
#define R3B8 13
#define R3B9 0
#define R3B10 3
#define R3B11 6
#define R3B12 9
#define R3B13 12
#define R3B14 15
#define R3B15 2
#define R4B0 0
#define R4B1 7
#define R4B2 14
#define R4B3 5
#define R4B4 12
#define R4B5 3
#define R4B6 10
#define R4B7 1
#define R4B8 8
#define R4B9 15
#define R4B10 6
#define R4B11 13
#define R4B12 4
#define R4B13 11
#define R4B14 2
#define R4B15 9
#define S1_0 7
#define S1_1 12
#define S1_2 17
#define S1_3 22
#define S2_0 5
#define S2_1 9
#define S2_2 14
#define S2_3 20
#define S3_0 4
#define S3_1 11
#define S3_2 16
#define S3_3 23
#define S4_0 6
#define S4_1 10
#define S4_2 15
#define S4_3 21
struct MD5ContextStr {
PRUint32 lsbInput;
PRUint32 msbInput;
PRUint32 cv[4];
union {
PRUint8 b[64];
PRUint32 w[16];
} u;
};
#define inBuf u.b
SECStatus
MD5_Hash(unsigned char *dest, const char *src)
{
return MD5_HashBuf(dest, (const unsigned char *)src, PORT_Strlen(src));
}
SECStatus
MD5_HashBuf(unsigned char *dest, const unsigned char *src, uint32 src_length)
{
unsigned int len;
MD5Context cx;
MD5_Begin(&cx);
MD5_Update(&cx, src, src_length);
MD5_End(&cx, dest, &len, MD5_HASH_LEN);
/* memset(&cx, 0, sizeof cx); */
return SECSuccess;
}
MD5Context *
MD5_NewContext(void)
{
/* no need to ZAlloc, MD5_Begin will init the context */
MD5Context *cx = (MD5Context *)PORT_Alloc(sizeof(MD5Context));
if (cx == NULL) {
PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
return NULL;
}
return cx;
}
void
MD5_DestroyContext(MD5Context *cx, PRBool freeit)
{
/* memset(cx, 0, sizeof *cx); */
if (freeit) {
PORT_Free(cx);
}
}
void
MD5_Begin(MD5Context *cx)
{
cx->lsbInput = 0;
cx->msbInput = 0;
/* memset(cx->inBuf, 0, sizeof(cx->inBuf)); */
cx->cv[0] = CV0_1;
cx->cv[1] = CV0_2;
cx->cv[2] = CV0_3;
cx->cv[3] = CV0_4;
}
#define cls(i32, s) (tmp = i32, tmp << s | tmp >> (32 - s))
#if defined(SOLARIS) || defined(HPUX)
#define addto64(sumhigh, sumlow, addend) \
sumlow += addend; sumhigh += (sumlow < addend);
#else
#define addto64(sumhigh, sumlow, addend) \
sumlow += addend; if (sumlow < addend) ++sumhigh;
#endif
#define MASK 0x00ff00ff
#ifdef IS_LITTLE_ENDIAN
#define lendian(i32) \
(i32)
#else
#define lendian(i32) \
(tmp = i32 >> 16 | i32 << 16, (tmp & MASK) << 8 | tmp >> 8 & MASK)
#endif
#ifndef IS_LITTLE_ENDIAN
#define lebytes(b4) \
((b4)[3] << 24 | (b4)[2] << 16 | (b4)[1] << 8 | (b4)[0])
static void
md5_prep_state_le(MD5Context *cx)
{
PRUint32 tmp;
cx->u.w[0] = lendian(cx->u.w[0]);
cx->u.w[1] = lendian(cx->u.w[1]);
cx->u.w[2] = lendian(cx->u.w[2]);
cx->u.w[3] = lendian(cx->u.w[3]);
cx->u.w[4] = lendian(cx->u.w[4]);
cx->u.w[5] = lendian(cx->u.w[5]);
cx->u.w[6] = lendian(cx->u.w[6]);
cx->u.w[7] = lendian(cx->u.w[7]);
cx->u.w[8] = lendian(cx->u.w[8]);
cx->u.w[9] = lendian(cx->u.w[9]);
cx->u.w[10] = lendian(cx->u.w[10]);
cx->u.w[11] = lendian(cx->u.w[11]);
cx->u.w[12] = lendian(cx->u.w[12]);
cx->u.w[13] = lendian(cx->u.w[13]);
cx->u.w[14] = lendian(cx->u.w[14]);
cx->u.w[15] = lendian(cx->u.w[15]);
}
static void
md5_prep_buffer_le(MD5Context *cx, const PRUint8 *beBuf)
{
cx->u.w[0] = lebytes(&beBuf[0]);
cx->u.w[1] = lebytes(&beBuf[4]);
cx->u.w[2] = lebytes(&beBuf[8]);
cx->u.w[3] = lebytes(&beBuf[12]);
cx->u.w[4] = lebytes(&beBuf[16]);
cx->u.w[5] = lebytes(&beBuf[20]);
cx->u.w[6] = lebytes(&beBuf[24]);
cx->u.w[7] = lebytes(&beBuf[28]);
cx->u.w[8] = lebytes(&beBuf[32]);
cx->u.w[9] = lebytes(&beBuf[36]);
cx->u.w[10] = lebytes(&beBuf[40]);
cx->u.w[11] = lebytes(&beBuf[44]);
cx->u.w[12] = lebytes(&beBuf[48]);
cx->u.w[13] = lebytes(&beBuf[52]);
cx->u.w[14] = lebytes(&beBuf[56]);
cx->u.w[15] = lebytes(&beBuf[60]);
}
#endif
#define F(X, Y, Z) \
((X & Y) | ((~X) & Z))
#define G(X, Y, Z) \
((X & Z) | (Y & (~Z)))
#define H(X, Y, Z) \
(X ^ Y ^ Z)
#define I(X, Y, Z) \
(Y ^ (X | (~Z)))
#define FF(a, b, c, d, bufint, s, ti) \
a = b + cls(a + F(b, c, d) + bufint + ti, s)
#define GG(a, b, c, d, bufint, s, ti) \
a = b + cls(a + G(b, c, d) + bufint + ti, s)
#define HH(a, b, c, d, bufint, s, ti) \
a = b + cls(a + H(b, c, d) + bufint + ti, s)
#define II(a, b, c, d, bufint, s, ti) \
a = b + cls(a + I(b, c, d) + bufint + ti, s)
static void
md5_compress(MD5Context *cx, const PRUint32 *wBuf)
{
PRUint32 a, b, c, d;
PRUint32 tmp;
a = cx->cv[0];
b = cx->cv[1];
c = cx->cv[2];
d = cx->cv[3];
FF(a, b, c, d, wBuf[R1B0 ], S1_0, T1_0);
FF(d, a, b, c, wBuf[R1B1 ], S1_1, T1_1);
FF(c, d, a, b, wBuf[R1B2 ], S1_2, T1_2);
FF(b, c, d, a, wBuf[R1B3 ], S1_3, T1_3);
FF(a, b, c, d, wBuf[R1B4 ], S1_0, T1_4);
FF(d, a, b, c, wBuf[R1B5 ], S1_1, T1_5);
FF(c, d, a, b, wBuf[R1B6 ], S1_2, T1_6);
FF(b, c, d, a, wBuf[R1B7 ], S1_3, T1_7);
FF(a, b, c, d, wBuf[R1B8 ], S1_0, T1_8);
FF(d, a, b, c, wBuf[R1B9 ], S1_1, T1_9);
FF(c, d, a, b, wBuf[R1B10], S1_2, T1_10);
FF(b, c, d, a, wBuf[R1B11], S1_3, T1_11);
FF(a, b, c, d, wBuf[R1B12], S1_0, T1_12);
FF(d, a, b, c, wBuf[R1B13], S1_1, T1_13);
FF(c, d, a, b, wBuf[R1B14], S1_2, T1_14);
FF(b, c, d, a, wBuf[R1B15], S1_3, T1_15);
GG(a, b, c, d, wBuf[R2B0 ], S2_0, T2_0);
GG(d, a, b, c, wBuf[R2B1 ], S2_1, T2_1);
GG(c, d, a, b, wBuf[R2B2 ], S2_2, T2_2);
GG(b, c, d, a, wBuf[R2B3 ], S2_3, T2_3);
GG(a, b, c, d, wBuf[R2B4 ], S2_0, T2_4);
GG(d, a, b, c, wBuf[R2B5 ], S2_1, T2_5);
GG(c, d, a, b, wBuf[R2B6 ], S2_2, T2_6);
GG(b, c, d, a, wBuf[R2B7 ], S2_3, T2_7);
GG(a, b, c, d, wBuf[R2B8 ], S2_0, T2_8);
GG(d, a, b, c, wBuf[R2B9 ], S2_1, T2_9);
GG(c, d, a, b, wBuf[R2B10], S2_2, T2_10);
GG(b, c, d, a, wBuf[R2B11], S2_3, T2_11);
GG(a, b, c, d, wBuf[R2B12], S2_0, T2_12);
GG(d, a, b, c, wBuf[R2B13], S2_1, T2_13);
GG(c, d, a, b, wBuf[R2B14], S2_2, T2_14);
GG(b, c, d, a, wBuf[R2B15], S2_3, T2_15);
HH(a, b, c, d, wBuf[R3B0 ], S3_0, T3_0);
HH(d, a, b, c, wBuf[R3B1 ], S3_1, T3_1);
HH(c, d, a, b, wBuf[R3B2 ], S3_2, T3_2);
HH(b, c, d, a, wBuf[R3B3 ], S3_3, T3_3);
HH(a, b, c, d, wBuf[R3B4 ], S3_0, T3_4);
HH(d, a, b, c, wBuf[R3B5 ], S3_1, T3_5);
HH(c, d, a, b, wBuf[R3B6 ], S3_2, T3_6);
HH(b, c, d, a, wBuf[R3B7 ], S3_3, T3_7);
HH(a, b, c, d, wBuf[R3B8 ], S3_0, T3_8);
HH(d, a, b, c, wBuf[R3B9 ], S3_1, T3_9);
HH(c, d, a, b, wBuf[R3B10], S3_2, T3_10);
HH(b, c, d, a, wBuf[R3B11], S3_3, T3_11);
HH(a, b, c, d, wBuf[R3B12], S3_0, T3_12);
HH(d, a, b, c, wBuf[R3B13], S3_1, T3_13);
HH(c, d, a, b, wBuf[R3B14], S3_2, T3_14);
HH(b, c, d, a, wBuf[R3B15], S3_3, T3_15);
II(a, b, c, d, wBuf[R4B0 ], S4_0, T4_0);
II(d, a, b, c, wBuf[R4B1 ], S4_1, T4_1);
II(c, d, a, b, wBuf[R4B2 ], S4_2, T4_2);
II(b, c, d, a, wBuf[R4B3 ], S4_3, T4_3);
II(a, b, c, d, wBuf[R4B4 ], S4_0, T4_4);
II(d, a, b, c, wBuf[R4B5 ], S4_1, T4_5);
II(c, d, a, b, wBuf[R4B6 ], S4_2, T4_6);
II(b, c, d, a, wBuf[R4B7 ], S4_3, T4_7);
II(a, b, c, d, wBuf[R4B8 ], S4_0, T4_8);
II(d, a, b, c, wBuf[R4B9 ], S4_1, T4_9);
II(c, d, a, b, wBuf[R4B10], S4_2, T4_10);
II(b, c, d, a, wBuf[R4B11], S4_3, T4_11);
II(a, b, c, d, wBuf[R4B12], S4_0, T4_12);
II(d, a, b, c, wBuf[R4B13], S4_1, T4_13);
II(c, d, a, b, wBuf[R4B14], S4_2, T4_14);
II(b, c, d, a, wBuf[R4B15], S4_3, T4_15);
cx->cv[0] += a;
cx->cv[1] += b;
cx->cv[2] += c;
cx->cv[3] += d;
}
void
MD5_Update(MD5Context *cx, const unsigned char *input, unsigned int inputLen)
{
PRUint32 bytesToConsume;
PRUint32 inBufIndex = cx->lsbInput & 63;
const PRUint32 *wBuf;
/* Add the number of input bytes to the 64-bit input counter. */
addto64(cx->msbInput, cx->lsbInput, inputLen);
if (inBufIndex) {
/* There is already data in the buffer. Fill with input. */
bytesToConsume = PR_MIN(inputLen, MD5_BUFFER_SIZE - inBufIndex);
memcpy(&cx->inBuf[inBufIndex], input, bytesToConsume);
if (inBufIndex + bytesToConsume >= MD5_BUFFER_SIZE) {
/* The buffer is filled. Run the compression function. */
#ifndef IS_LITTLE_ENDIAN
md5_prep_state_le(cx);
#endif
md5_compress(cx, cx->u.w);
}
/* Remaining input. */
inputLen -= bytesToConsume;
input += bytesToConsume;
}
/* Iterate over 64-byte chunks of the message. */
while (inputLen >= MD5_BUFFER_SIZE) {
#ifdef IS_LITTLE_ENDIAN
#ifdef _X86_
/* x86 can handle arithmetic on non-word-aligned buffers */
wBuf = (PRUint32 *)input;
#else
if ((ptrdiff_t)input & 0x3) {
/* buffer not aligned, copy it to force alignment */
memcpy(cx->inBuf, input, MD5_BUFFER_SIZE);
wBuf = cx->u.w;
} else {
/* buffer is aligned */
wBuf = (PRUint32 *)input;
}
#endif
#else
md5_prep_buffer_le(cx, input);
wBuf = cx->u.w;
#endif
md5_compress(cx, wBuf);
inputLen -= MD5_BUFFER_SIZE;
input += MD5_BUFFER_SIZE;
}
/* Tail of message (message bytes mod 64). */
if (inputLen)
memcpy(cx->inBuf, input, inputLen);
}
static const unsigned char padbytes[] = {
0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void
MD5_End(MD5Context *cx, unsigned char *digest,
unsigned int *digestLen, unsigned int maxDigestLen)
{
#ifndef IS_LITTLE_ENDIAN
PRUint32 tmp;
#endif
PRUint32 lowInput, highInput;
PRUint32 inBufIndex = cx->lsbInput & 63;
if (maxDigestLen < MD5_HASH_LEN) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return;
}
/* Copy out the length of bits input before padding. */
lowInput = cx->lsbInput;
highInput = (cx->msbInput << 3) | (lowInput >> 29);
lowInput <<= 3;
if (inBufIndex < MD5_END_BUFFER) {
MD5_Update(cx, padbytes, MD5_END_BUFFER - inBufIndex);
} else {
MD5_Update(cx, padbytes,
MD5_END_BUFFER + MD5_BUFFER_SIZE - inBufIndex);
}
/* Store the number of bytes input (before padding) in final 64 bits. */
cx->u.w[14] = lendian(lowInput);
cx->u.w[15] = lendian(highInput);
/* Final call to compress. */
#ifndef IS_LITTLE_ENDIAN
md5_prep_state_le(cx);
#endif
md5_compress(cx, cx->u.w);
/* Copy the resulting values out of the chain variables into return buf. */
*digestLen = MD5_HASH_LEN;
#ifndef IS_LITTLE_ENDIAN
cx->cv[0] = lendian(cx->cv[0]);
cx->cv[1] = lendian(cx->cv[1]);
cx->cv[2] = lendian(cx->cv[2]);
cx->cv[3] = lendian(cx->cv[3]);
#endif
memcpy(digest, cx->cv, MD5_HASH_LEN);
}
unsigned int
MD5_FlattenSize(MD5Context *cx)
{
return sizeof(*cx);
}
SECStatus
MD5_Flatten(MD5Context *cx, unsigned char *space)
{
memcpy(space, cx, sizeof(*cx));
return SECSuccess;
}
MD5Context *
MD5_Resurrect(unsigned char *space, void *arg)
{
MD5Context *cx = MD5_NewContext();
if (cx)
memcpy(cx, space, sizeof(*cx));
return cx;
}
void MD5_Clone(MD5Context *dest, MD5Context *src)
{
memcpy(dest, src, sizeof *dest);
}
void
MD5_TraceState(MD5Context *cx)
{
PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
}
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