md5.c
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上传日期:2007-01-12
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文件大小:14k
- /*
- * 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 Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- #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, (unsigned char *)src, PL_strlen(src));
- }
- SECStatus
- MD5_HashBuf(unsigned char *dest, const unsigned char *src, uint32 src_length)
- {
- unsigned int len;
- MD5Context *cx = MD5_NewContext();
- if (cx == NULL) {
- PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
- return SECFailure;
- }
- MD5_Begin(cx);
- MD5_Update(cx, src, src_length);
- MD5_End(cx, dest, &len, MD5_HASH_LEN);
- MD5_DestroyContext(cx, PR_TRUE);
- return SECSuccess;
- }
- MD5Context *
- MD5_NewContext(void)
- {
- MD5Context *cx = (MD5Context *)PORT_ZAlloc(sizeof(MD5Context));
- if (cx == NULL) {
- PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
- return NULL;
- }
- return cx;
- }
- void
- MD5_DestroyContext(MD5Context *cx, PRBool freeit)
- {
- if (freeit) {
- PORT_ZFree(cx, sizeof(MD5Context));
- }
- }
- 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))
- #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
- #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 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)
- {
- PRUint32 a, b, c, d;
- PRUint32 tmp;
- a = cx->cv[0];
- b = cx->cv[1];
- c = cx->cv[2];
- d = cx->cv[3];
- #ifndef IS_LITTLE_ENDIAN
- 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]);
- #endif
- FF(a, b, c, d, cx->u.w[R1B0 ], S1_0, T1_0);
- FF(d, a, b, c, cx->u.w[R1B1 ], S1_1, T1_1);
- FF(c, d, a, b, cx->u.w[R1B2 ], S1_2, T1_2);
- FF(b, c, d, a, cx->u.w[R1B3 ], S1_3, T1_3);
- FF(a, b, c, d, cx->u.w[R1B4 ], S1_0, T1_4);
- FF(d, a, b, c, cx->u.w[R1B5 ], S1_1, T1_5);
- FF(c, d, a, b, cx->u.w[R1B6 ], S1_2, T1_6);
- FF(b, c, d, a, cx->u.w[R1B7 ], S1_3, T1_7);
- FF(a, b, c, d, cx->u.w[R1B8 ], S1_0, T1_8);
- FF(d, a, b, c, cx->u.w[R1B9 ], S1_1, T1_9);
- FF(c, d, a, b, cx->u.w[R1B10], S1_2, T1_10);
- FF(b, c, d, a, cx->u.w[R1B11], S1_3, T1_11);
- FF(a, b, c, d, cx->u.w[R1B12], S1_0, T1_12);
- FF(d, a, b, c, cx->u.w[R1B13], S1_1, T1_13);
- FF(c, d, a, b, cx->u.w[R1B14], S1_2, T1_14);
- FF(b, c, d, a, cx->u.w[R1B15], S1_3, T1_15);
- GG(a, b, c, d, cx->u.w[R2B0 ], S2_0, T2_0);
- GG(d, a, b, c, cx->u.w[R2B1 ], S2_1, T2_1);
- GG(c, d, a, b, cx->u.w[R2B2 ], S2_2, T2_2);
- GG(b, c, d, a, cx->u.w[R2B3 ], S2_3, T2_3);
- GG(a, b, c, d, cx->u.w[R2B4 ], S2_0, T2_4);
- GG(d, a, b, c, cx->u.w[R2B5 ], S2_1, T2_5);
- GG(c, d, a, b, cx->u.w[R2B6 ], S2_2, T2_6);
- GG(b, c, d, a, cx->u.w[R2B7 ], S2_3, T2_7);
- GG(a, b, c, d, cx->u.w[R2B8 ], S2_0, T2_8);
- GG(d, a, b, c, cx->u.w[R2B9 ], S2_1, T2_9);
- GG(c, d, a, b, cx->u.w[R2B10], S2_2, T2_10);
- GG(b, c, d, a, cx->u.w[R2B11], S2_3, T2_11);
- GG(a, b, c, d, cx->u.w[R2B12], S2_0, T2_12);
- GG(d, a, b, c, cx->u.w[R2B13], S2_1, T2_13);
- GG(c, d, a, b, cx->u.w[R2B14], S2_2, T2_14);
- GG(b, c, d, a, cx->u.w[R2B15], S2_3, T2_15);
- HH(a, b, c, d, cx->u.w[R3B0 ], S3_0, T3_0);
- HH(d, a, b, c, cx->u.w[R3B1 ], S3_1, T3_1);
- HH(c, d, a, b, cx->u.w[R3B2 ], S3_2, T3_2);
- HH(b, c, d, a, cx->u.w[R3B3 ], S3_3, T3_3);
- HH(a, b, c, d, cx->u.w[R3B4 ], S3_0, T3_4);
- HH(d, a, b, c, cx->u.w[R3B5 ], S3_1, T3_5);
- HH(c, d, a, b, cx->u.w[R3B6 ], S3_2, T3_6);
- HH(b, c, d, a, cx->u.w[R3B7 ], S3_3, T3_7);
- HH(a, b, c, d, cx->u.w[R3B8 ], S3_0, T3_8);
- HH(d, a, b, c, cx->u.w[R3B9 ], S3_1, T3_9);
- HH(c, d, a, b, cx->u.w[R3B10], S3_2, T3_10);
- HH(b, c, d, a, cx->u.w[R3B11], S3_3, T3_11);
- HH(a, b, c, d, cx->u.w[R3B12], S3_0, T3_12);
- HH(d, a, b, c, cx->u.w[R3B13], S3_1, T3_13);
- HH(c, d, a, b, cx->u.w[R3B14], S3_2, T3_14);
- HH(b, c, d, a, cx->u.w[R3B15], S3_3, T3_15);
- II(a, b, c, d, cx->u.w[R4B0 ], S4_0, T4_0);
- II(d, a, b, c, cx->u.w[R4B1 ], S4_1, T4_1);
- II(c, d, a, b, cx->u.w[R4B2 ], S4_2, T4_2);
- II(b, c, d, a, cx->u.w[R4B3 ], S4_3, T4_3);
- II(a, b, c, d, cx->u.w[R4B4 ], S4_0, T4_4);
- II(d, a, b, c, cx->u.w[R4B5 ], S4_1, T4_5);
- II(c, d, a, b, cx->u.w[R4B6 ], S4_2, T4_6);
- II(b, c, d, a, cx->u.w[R4B7 ], S4_3, T4_7);
- II(a, b, c, d, cx->u.w[R4B8 ], S4_0, T4_8);
- II(d, a, b, c, cx->u.w[R4B9 ], S4_1, T4_9);
- II(c, d, a, b, cx->u.w[R4B10], S4_2, T4_10);
- II(b, c, d, a, cx->u.w[R4B11], S4_3, T4_11);
- II(a, b, c, d, cx->u.w[R4B12], S4_0, T4_12);
- II(d, a, b, c, cx->u.w[R4B13], S4_1, T4_13);
- II(c, d, a, b, cx->u.w[R4B14], S4_2, T4_14);
- II(b, c, d, a, cx->u.w[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;
- /* 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. */
- md5_compress(cx);
- /* Remaining input. */
- inputLen -= bytesToConsume;
- input += bytesToConsume;
- }
- /* Iterate over 64-byte chunks of the message. */
- while (inputLen >= MD5_BUFFER_SIZE) {
- memcpy(cx->inBuf, input, MD5_BUFFER_SIZE);
- md5_compress(cx);
- 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)
- {
- PRUint32 tmp;
- 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. */
- md5_compress(cx);
- /* 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_TraceState(MD5Context *cx)
- {
- PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
- }