diff options
| -rw-r--r-- | Makefile | 22 | ||||
| -rw-r--r-- | cache.h | 2 | ||||
| -rw-r--r-- | mozilla-sha1/sha1.c | 152 | ||||
| -rw-r--r-- | mozilla-sha1/sha1.h | 45 |
4 files changed, 209 insertions, 12 deletions
@@ -29,22 +29,22 @@ LIB_H=cache.h object.h LIBS = $(LIB_FILE) LIBS += -lz -LIBS += -lssl + +ifdef MOZILLA_SHA1 + SHA1_HEADER="mozilla-sha1/sha1.h" + LIB_OBJS += mozilla-sha1/sha1.o +else + SHA1_HEADER=<openssl/sha.h> + LIBS += -lssl +endif + +CFLAGS += '-DSHA1_HEADER=$(SHA1_HEADER)' $(LIB_FILE): $(LIB_OBJS) $(AR) rcs $@ $(LIB_OBJS) init-db: init-db.o -fsck-cache: fsck-cache.o $(LIB_FILE) object.o commit.o tree.o blob.o - $(CC) $(CFLAGS) -o fsck-cache fsck-cache.o $(LIBS) - -rev-tree: rev-tree.o $(LIB_FILE) object.o commit.o tree.o blob.o - $(CC) $(CFLAGS) -o rev-tree rev-tree.o $(LIBS) - -merge-base: merge-base.o $(LIB_FILE) object.o commit.o tree.o blob.o - $(CC) $(CFLAGS) -o merge-base merge-base.o $(LIBS) - %: %.o $(LIB_FILE) $(CC) $(CFLAGS) -o $@ $< $(LIBS) @@ -77,7 +77,7 @@ unpack-file.o: $(LIB_H) write-tree.o: $(LIB_H) clean: - rm -f *.o $(PROG) $(LIB_FILE) + rm -f *.o mozilla-sha1/*.o $(PROG) $(LIB_FILE) backup: clean cd .. ; tar czvf dircache.tar.gz dir-cache @@ -14,7 +14,7 @@ #include <sys/param.h> #include <netinet/in.h> -#include <openssl/sha.h> +#include SHA1_HEADER #include <zlib.h> /* diff --git a/mozilla-sha1/sha1.c b/mozilla-sha1/sha1.c new file mode 100644 index 000000000..7f6fc05e0 --- /dev/null +++ b/mozilla-sha1/sha1.c @@ -0,0 +1,152 @@ +/* + * 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 SHA 180-1 Reference Implementation (Compact version) + * + * The Initial Developer of the Original Code is Paul Kocher of + * Cryptography Research. Portions created by Paul Kocher are + * Copyright (C) 1995-9 by Cryptography Research, Inc. All + * Rights Reserved. + * + * Contributor(s): + * + * Paul Kocher + * + * 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 "sha1.h" + +static void shaHashBlock(SHA_CTX *ctx); + +void SHA1_Init(SHA_CTX *ctx) { + int i; + + ctx->lenW = 0; + ctx->sizeHi = ctx->sizeLo = 0; + + /* Initialize H with the magic constants (see FIPS180 for constants) + */ + ctx->H[0] = 0x67452301; + ctx->H[1] = 0xefcdab89; + ctx->H[2] = 0x98badcfe; + ctx->H[3] = 0x10325476; + ctx->H[4] = 0xc3d2e1f0; + + for (i = 0; i < 80; i++) + ctx->W[i] = 0; +} + + +void SHA1_Update(SHA_CTX *ctx, void *_dataIn, int len) { + unsigned char *dataIn = _dataIn; + int i; + + /* Read the data into W and process blocks as they get full + */ + for (i = 0; i < len; i++) { + ctx->W[ctx->lenW / 4] <<= 8; + ctx->W[ctx->lenW / 4] |= (unsigned int)dataIn[i]; + if ((++ctx->lenW) % 64 == 0) { + shaHashBlock(ctx); + ctx->lenW = 0; + } + ctx->sizeLo += 8; + ctx->sizeHi += (ctx->sizeLo < 8); + } +} + + +void SHA1_Final(unsigned char hashout[20], SHA_CTX *ctx) { + unsigned char pad0x80 = 0x80; + unsigned char pad0x00 = 0x00; + unsigned char padlen[8]; + int i; + + /* Pad with a binary 1 (e.g. 0x80), then zeroes, then length + */ + padlen[0] = (unsigned char)((ctx->sizeHi >> 24) & 255); + padlen[1] = (unsigned char)((ctx->sizeHi >> 16) & 255); + padlen[2] = (unsigned char)((ctx->sizeHi >> 8) & 255); + padlen[3] = (unsigned char)((ctx->sizeHi >> 0) & 255); + padlen[4] = (unsigned char)((ctx->sizeLo >> 24) & 255); + padlen[5] = (unsigned char)((ctx->sizeLo >> 16) & 255); + padlen[6] = (unsigned char)((ctx->sizeLo >> 8) & 255); + padlen[7] = (unsigned char)((ctx->sizeLo >> 0) & 255); + SHA1_Update(ctx, &pad0x80, 1); + while (ctx->lenW != 56) + SHA1_Update(ctx, &pad0x00, 1); + SHA1_Update(ctx, padlen, 8); + + /* Output hash + */ + for (i = 0; i < 20; i++) { + hashout[i] = (unsigned char)(ctx->H[i / 4] >> 24); + ctx->H[i / 4] <<= 8; + } + + /* + * Re-initialize the context (also zeroizes contents) + */ + SHA1_Init(ctx); +} + + +#define SHA_ROT(X,n) (((X) << (n)) | ((X) >> (32-(n)))) + +static void shaHashBlock(SHA_CTX *ctx) { + int t; + unsigned int A,B,C,D,E,TEMP; + + for (t = 16; t <= 79; t++) + ctx->W[t] = + SHA_ROT(ctx->W[t-3] ^ ctx->W[t-8] ^ ctx->W[t-14] ^ ctx->W[t-16], 1); + + A = ctx->H[0]; + B = ctx->H[1]; + C = ctx->H[2]; + D = ctx->H[3]; + E = ctx->H[4]; + + for (t = 0; t <= 19; t++) { + TEMP = SHA_ROT(A,5) + (((C^D)&B)^D) + E + ctx->W[t] + 0x5a827999; + E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP; + } + for (t = 20; t <= 39; t++) { + TEMP = SHA_ROT(A,5) + (B^C^D) + E + ctx->W[t] + 0x6ed9eba1; + E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP; + } + for (t = 40; t <= 59; t++) { + TEMP = SHA_ROT(A,5) + ((B&C)|(D&(B|C))) + E + ctx->W[t] + 0x8f1bbcdc; + E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP; + } + for (t = 60; t <= 79; t++) { + TEMP = SHA_ROT(A,5) + (B^C^D) + E + ctx->W[t] + 0xca62c1d6; + E = D; D = C; C = SHA_ROT(B, 30); B = A; A = TEMP; + } + + ctx->H[0] += A; + ctx->H[1] += B; + ctx->H[2] += C; + ctx->H[3] += D; + ctx->H[4] += E; +} + diff --git a/mozilla-sha1/sha1.h b/mozilla-sha1/sha1.h new file mode 100644 index 000000000..f5decbf43 --- /dev/null +++ b/mozilla-sha1/sha1.h @@ -0,0 +1,45 @@ +/* + * 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 SHA 180-1 Header File + * + * The Initial Developer of the Original Code is Paul Kocher of + * Cryptography Research. Portions created by Paul Kocher are + * Copyright (C) 1995-9 by Cryptography Research, Inc. All + * Rights Reserved. + * + * Contributor(s): + * + * Paul Kocher + * + * 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. + */ + +typedef struct { + unsigned int H[5]; + unsigned int W[80]; + int lenW; + unsigned int sizeHi,sizeLo; +} SHA_CTX; + +void SHA1_Init(SHA_CTX *ctx); +void SHA1_Update(SHA_CTX *ctx, void *dataIn, int len); +void SHA1_Final(unsigned char hashout[20], SHA_CTX *ctx); |