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comparison: libidav/crypto.c

libidav/crypto.c

changeset 103
6606616eca9f
parent 49
2f71f4ee247a
child 113
dde28a806552
equal deleted inserted replaced
102:64ded9f6a6c6 103:6606616eca9f
64 return !RAND_bytes(buf, len); 64 return !RAND_bytes(buf, len);
65 } 65 }
66 66
67 AESDecrypter* aes_decrypter_new(DavKey *key, void *stream, dav_write_func write_func) { 67 AESDecrypter* aes_decrypter_new(DavKey *key, void *stream, dav_write_func write_func) {
68 AESDecrypter *dec = calloc(1, sizeof(AESDecrypter)); 68 AESDecrypter *dec = calloc(1, sizeof(AESDecrypter));
69 SHA256_Init(&dec->sha256); 69 dav_sha256_init(&dec->sha256);
70 dec->stream = stream; 70 dec->stream = stream;
71 dec->write = write_func; 71 dec->write = write_func;
72 dec->key = key; 72 dec->key = key;
73 dec->init = 0; 73 dec->init = 0;
74 dec->ivpos = 0; 74 dec->ivpos = 0;
120 120
121 int outlen = len + 16; 121 int outlen = len + 16;
122 unsigned char *out = malloc(outlen); 122 unsigned char *out = malloc(outlen);
123 EVP_DecryptUpdate(dec->ctx, out, &outlen, buf, len); 123 EVP_DecryptUpdate(dec->ctx, out, &outlen, buf, len);
124 ssize_t wlen = dec->write(out, 1, outlen, dec->stream); 124 ssize_t wlen = dec->write(out, 1, outlen, dec->stream);
125 SHA256_Update(&dec->sha256, out, wlen); 125 dav_sha256_update(&dec->sha256, out, wlen);
126 free(out); 126 free(out);
127 return (s*n) / s; 127 return (s*n) / s;
128 } 128 }
129 129
130 void aes_decrypter_shutdown(AESDecrypter *dec) { 130 void aes_decrypter_shutdown(AESDecrypter *dec) {
131 if(dec->init) { 131 if(dec->init) {
132 void *out = malloc(128); 132 void *out = malloc(128);
133 int len = 0; 133 int len = 0;
134 EVP_DecryptFinal_ex(dec->ctx, out, &len); 134 EVP_DecryptFinal_ex(dec->ctx, out, &len);
135 dec->write(out, 1, len, dec->stream); 135 dec->write(out, 1, len, dec->stream);
136 SHA256_Update(&dec->sha256, out, len); 136 dav_sha256_update(&dec->sha256, out, len);
137 free(out); 137 free(out);
138 //EVP_CIPHER_CTX_cleanup(&dec->ctx); 138 //EVP_CIPHER_CTX_cleanup(&dec->ctx);
139 EVP_CIPHER_CTX_free(dec->ctx); 139 EVP_CIPHER_CTX_free(dec->ctx);
140 } 140 }
141 } 141 }
151 free(iv); 151 free(iv);
152 return NULL; 152 return NULL;
153 } 153 }
154 154
155 AESEncrypter *enc = malloc(sizeof(AESEncrypter)); 155 AESEncrypter *enc = malloc(sizeof(AESEncrypter));
156 SHA256_Init(&enc->sha256); 156 dav_sha256_init(&enc->sha256);
157 enc->stream = stream; 157 enc->stream = stream;
158 enc->read = read_func; 158 enc->read = read_func;
159 enc->seek = seek_func; 159 enc->seek = seek_func;
160 enc->tmp = NULL; 160 enc->tmp = NULL;
161 enc->tmplen = 0; 161 enc->tmplen = 0;
198 } 198 }
199 199
200 void *in = malloc(len); 200 void *in = malloc(len);
201 size_t in_len = enc->read(in, 1, len, enc->stream); 201 size_t in_len = enc->read(in, 1, len, enc->stream);
202 202
203 SHA256_Update(&enc->sha256, in, in_len); 203 dav_sha256_update(&enc->sha256, in, in_len);
204 204
205 unsigned char *out = NULL; 205 unsigned char *out = NULL;
206 int outlen = 0; 206 int outlen = 0;
207 size_t ivl = enc->ivlen; 207 size_t ivl = enc->ivlen;
208 if(in_len != 0) { 208 if(in_len != 0) {
355 return (char*)out; 355 return (char*)out;
356 } 356 }
357 357
358 358
359 void dav_get_hash(DAV_SHA_CTX *sha256, unsigned char *buf){ 359 void dav_get_hash(DAV_SHA_CTX *sha256, unsigned char *buf){
360 SHA256_Final((unsigned char*)buf, sha256); 360 dav_sha256_final(sha256, (unsigned char*)buf);
361 } 361 }
362 362
363 char* dav_create_hash(const char *data, size_t len) { 363 char* dav_create_hash(const char *data, size_t len) {
364 unsigned char hash[DAV_SHA256_DIGEST_LENGTH]; 364 unsigned char hash[DAV_SHA256_DIGEST_LENGTH];
365 DAV_SHA_CTX ctx; 365 DAV_SHA_CTX ctx;
366 SHA256_Init(&ctx); 366 dav_sha256_init(&ctx);
367 SHA256_Update(&ctx, data, len); 367 dav_sha256_update(&ctx, data, len);
368 SHA256_Final(hash, &ctx); 368 dav_sha256_final(&ctx, hash);
369 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH); 369 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH);
370 } 370 }
371 371
372 DAV_SHA_CTX* dav_hash_init(void) { 372 DAV_SHA_CTX* dav_sha256_create(void) {
373 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX)); 373 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX));
374 dav_sha256_init(ctx);
375 return ctx;
376 }
377
378 #if OPENSSL_VERSION_NUMBER < 0x30000000L
379
380 void dav_sha256_init(DAV_SHA_CTX *ctx) {
374 SHA256_Init(ctx); 381 SHA256_Init(ctx);
375 return ctx; 382 }
376 } 383
377 384 void dav_sha256_update(DAV_SHA_CTX *ctx, const void *data, size_t length) {
378 void dav_hash_update(DAV_SHA_CTX *ctx, const char *data, size_t len) { 385 SHA256_Update(ctx, data, length);
379 SHA256_Update(ctx, data, len); 386 }
380 } 387
381 388 void dav_sha256_final(char *md, DAV_SHA_CTX *ctx) {
382 void dav_hash_final(DAV_SHA_CTX *ctx, unsigned char *buf) { 389 SHA256_Final(md, ctx);
383 SHA256_Final(buf, ctx); 390 }
384 free(ctx); 391
385 } 392 #else
393
394 void dav_sha256_init(DAV_SHA_CTX *ctx) {
395 EVP_MD_CTX *mdctx = EVP_MD_CTX_new();
396 EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL);
397 *ctx = mdctx;
398 }
399
400 void dav_sha256_update(DAV_SHA_CTX *ctx, const char *data, size_t length) {
401 EVP_DigestUpdate(*ctx, data, length);
402 }
403
404 void dav_sha256_final(DAV_SHA_CTX *ctx, unsigned char *md) {
405 EVP_DigestFinal(*ctx, md, NULL);
406 }
407
408 #endif
386 409
387 #if OPENSSL_VERSION_NUMBER < 0x10100000L 410 #if OPENSSL_VERSION_NUMBER < 0x10100000L
388 static int crypto_pw2key_error = 0; 411 static int crypto_pw2key_error = 0;
389 DavKey* dav_pw2key(const char *password, const unsigned char *salt, int saltlen, int pwfunc, int enc) { 412 DavKey* dav_pw2key(const char *password, const unsigned char *salt, int saltlen, int pwfunc, int enc) {
390 if(!crypto_pw2key_error) { 413 if(!crypto_pw2key_error) {
817 unsigned char hash[DAV_SHA256_DIGEST_LENGTH]; 840 unsigned char hash[DAV_SHA256_DIGEST_LENGTH];
818 CC_SHA256((const unsigned char*)data, len, hash); 841 CC_SHA256((const unsigned char*)data, len, hash);
819 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH); 842 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH);
820 } 843 }
821 844
822 DAV_SHA_CTX* dav_hash_init(void) { 845 DAV_SHA_CTX* dav_sha256_create(void) {
823 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX)); 846 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX));
824 CC_SHA256_Init(ctx); 847 CC_SHA256_Init(ctx);
825 return ctx; 848 return ctx;
826 } 849 }
827 850
828 void dav_hash_update(DAV_SHA_CTX *ctx, const char *data, size_t len) { 851 void dav_sha256_update(DAV_SHA_CTX *ctx, const char *data, size_t len) {
829 CC_SHA256_Update(ctx, data, len); 852 CC_SHA256_Update(ctx, data, len);
830 } 853 }
831 854
832 void dav_hash_final(DAV_SHA_CTX *ctx, unsigned char *buf) { 855 void dav_sha256_final(DAV_SHA_CTX *ctx, unsigned char *buf) {
833 CC_SHA256_Final(buf, ctx); 856 CC_SHA256_Final(buf, ctx);
834 free(ctx); 857 free(ctx);
835 } 858 }
836 859
837 DavKey* dav_pw2key(const char *password, const unsigned char *salt, int saltlen, int pwfunc, int enc) { 860 DavKey* dav_pw2key(const char *password, const unsigned char *salt, int saltlen, int pwfunc, int enc) {
1394 } 1417 }
1395 1418
1396 1419
1397 char* dav_create_hash(const char *data, size_t len) { 1420 char* dav_create_hash(const char *data, size_t len) {
1398 unsigned char hash[DAV_SHA256_DIGEST_LENGTH]; 1421 unsigned char hash[DAV_SHA256_DIGEST_LENGTH];
1399 DAV_SHA_CTX *ctx = dav_hash_init(); 1422 DAV_SHA_CTX *ctx = dav_sha256_create();
1400 if(ctx) { 1423 if(ctx) {
1401 dav_hash_update(ctx, data, len); 1424 dav_sha256_update(ctx, data, len);
1402 dav_hash_final(ctx, hash); 1425 dav_sha256_final(ctx, hash);
1403 } 1426 }
1404 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH); 1427 return util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH);
1405 } 1428 }
1406 1429
1407 DAV_SHA_CTX* dav_hash_init(void) { 1430 DAV_SHA_CTX* dav_sha256_create(void) {
1408 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX)); 1431 DAV_SHA_CTX *ctx = malloc(sizeof(DAV_SHA_CTX));
1409 if(!ctx) { 1432 if(!ctx) {
1410 return NULL; 1433 return NULL;
1411 } 1434 }
1412 if(cng_hash_init(ctx)) { 1435 if(cng_hash_init(ctx)) {
1414 return NULL; 1437 return NULL;
1415 } 1438 }
1416 return ctx; 1439 return ctx;
1417 } 1440 }
1418 1441
1419 void dav_hash_update(DAV_SHA_CTX *ctx, const char *data, size_t len) { 1442 void dav_sha256_update(DAV_SHA_CTX *ctx, const char *data, size_t len) {
1420 BCryptHashData(ctx->hHash, (PUCHAR)data, len, 0); 1443 BCryptHashData(ctx->hHash, (PUCHAR)data, len, 0);
1421 } 1444 }
1422 1445
1423 void dav_hash_final(DAV_SHA_CTX *ctx, unsigned char *buf) { 1446 void dav_sha256_final(DAV_SHA_CTX *ctx, unsigned char *buf) {
1424 BCryptFinishHash(ctx->hHash, (PUCHAR)buf, DAV_SHA256_DIGEST_LENGTH, 0); 1447 BCryptFinishHash(ctx->hHash, (PUCHAR)buf, DAV_SHA256_DIGEST_LENGTH, 0);
1425 1448
1426 // cleanup 1449 // cleanup
1427 cng_cleanup(ctx->hAlg, NULL, ctx->hHash, ctx->pbHashObject); 1450 cng_cleanup(ctx->hAlg, NULL, ctx->hHash, ctx->pbHashObject);
1428 free(ctx); 1451 free(ctx);

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