2 * Copyright (c) 2014 Michihiro NAKAJIMA
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include "archive_platform.h"
32 #include "archive_cryptor_private.h"
35 * On systems that do not support any recognized crypto libraries,
36 * this file will normally define no usable symbols.
38 * But some compilers and linkers choke on empty object files, so
39 * define a public symbol that will always exist. This could
40 * be removed someday if this file gains another always-present
43 int __libarchive_cryptor_build_hack(void) {
47 #ifdef ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
50 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
51 size_t salt_len, unsigned rounds, uint8_t *derived_key,
52 size_t derived_key_len)
54 CCKeyDerivationPBKDF(kCCPBKDF2, (const char *)pw,
55 pw_len, salt, salt_len, kCCPRFHmacAlgSHA1, rounds,
56 derived_key, derived_key_len);
60 #elif defined(_WIN32) && !defined(__CYGWIN__) && defined(HAVE_BCRYPT_H)
62 #pragma comment(lib, "Bcrypt.lib")
66 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
67 size_t salt_len, unsigned rounds, uint8_t *derived_key,
68 size_t derived_key_len)
71 BCRYPT_ALG_HANDLE hAlg;
73 status = BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA1_ALGORITHM,
74 MS_PRIMITIVE_PROVIDER, BCRYPT_ALG_HANDLE_HMAC_FLAG);
75 if (!BCRYPT_SUCCESS(status))
78 status = BCryptDeriveKeyPBKDF2(hAlg,
79 (PUCHAR)(uintptr_t)pw, (ULONG)pw_len,
80 (PUCHAR)(uintptr_t)salt, (ULONG)salt_len, rounds,
81 (PUCHAR)derived_key, (ULONG)derived_key_len, 0);
83 BCryptCloseAlgorithmProvider(hAlg, 0);
85 return (BCRYPT_SUCCESS(status)) ? 0: -1;
88 #elif defined(HAVE_LIBMBEDCRYPTO) && defined(HAVE_MBEDTLS_PKCS5_H)
91 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
92 size_t salt_len, unsigned rounds, uint8_t *derived_key,
93 size_t derived_key_len)
95 mbedtls_md_context_t ctx;
96 const mbedtls_md_info_t *info;
99 mbedtls_md_init(&ctx);
100 info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA1);
102 mbedtls_md_free(&ctx);
105 ret = mbedtls_md_setup(&ctx, info, 1);
107 mbedtls_md_free(&ctx);
110 ret = mbedtls_pkcs5_pbkdf2_hmac(&ctx, (const unsigned char *)pw,
111 pw_len, salt, salt_len, rounds, derived_key_len, derived_key);
113 mbedtls_md_free(&ctx);
117 #elif defined(HAVE_LIBNETTLE) && defined(HAVE_NETTLE_PBKDF2_H)
120 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
121 size_t salt_len, unsigned rounds, uint8_t *derived_key,
122 size_t derived_key_len) {
123 pbkdf2_hmac_sha1((unsigned)pw_len, (const uint8_t *)pw, rounds,
124 salt_len, salt, derived_key_len, derived_key);
128 #elif defined(HAVE_LIBCRYPTO) && defined(HAVE_PKCS5_PBKDF2_HMAC_SHA1)
131 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
132 size_t salt_len, unsigned rounds, uint8_t *derived_key,
133 size_t derived_key_len) {
135 PKCS5_PBKDF2_HMAC_SHA1(pw, pw_len, salt, salt_len, rounds,
136 derived_key_len, derived_key);
144 pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
145 size_t salt_len, unsigned rounds, uint8_t *derived_key,
146 size_t derived_key_len) {
147 (void)pw; /* UNUSED */
148 (void)pw_len; /* UNUSED */
149 (void)salt; /* UNUSED */
150 (void)salt_len; /* UNUSED */
151 (void)rounds; /* UNUSED */
152 (void)derived_key; /* UNUSED */
153 (void)derived_key_len; /* UNUSED */
154 return -1; /* UNSUPPORTED */
159 #ifdef ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
160 # if MAC_OS_X_VERSION_MAX_ALLOWED < 1090
161 # define kCCAlgorithmAES kCCAlgorithmAES128
165 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
169 ctx->key_len = key_len;
170 memcpy(ctx->key, key, key_len);
171 memset(ctx->nonce, 0, sizeof(ctx->nonce));
172 ctx->encr_pos = AES_BLOCK_SIZE;
173 r = CCCryptorCreateWithMode(kCCEncrypt, kCCModeECB, kCCAlgorithmAES,
174 ccNoPadding, NULL, key, key_len, NULL, 0, 0, 0, &ctx->ctx);
175 return (r == kCCSuccess)? 0: -1;
179 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
181 CCCryptorRef ref = ctx->ctx;
184 r = CCCryptorReset(ref, NULL);
185 if (r != kCCSuccess && r != kCCUnimplemented)
187 r = CCCryptorUpdate(ref, ctx->nonce, AES_BLOCK_SIZE, ctx->encr_buf,
188 AES_BLOCK_SIZE, NULL);
189 return (r == kCCSuccess)? 0: -1;
193 aes_ctr_release(archive_crypto_ctx *ctx)
195 memset(ctx->key, 0, ctx->key_len);
196 memset(ctx->nonce, 0, sizeof(ctx->nonce));
200 #elif defined(_WIN32) && !defined(__CYGWIN__) && defined(HAVE_BCRYPT_H)
203 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
205 BCRYPT_ALG_HANDLE hAlg;
206 BCRYPT_KEY_HANDLE hKey;
207 DWORD keyObj_len, aes_key_len;
211 BCRYPT_KEY_LENGTHS_STRUCT key_lengths;
217 case 16: aes_key_len = 128; break;
218 case 24: aes_key_len = 192; break;
219 case 32: aes_key_len = 256; break;
222 status = BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM,
223 MS_PRIMITIVE_PROVIDER, 0);
224 if (!BCRYPT_SUCCESS(status))
226 status = BCryptGetProperty(hAlg, BCRYPT_KEY_LENGTHS, (PUCHAR)&key_lengths,
227 sizeof(key_lengths), &result, 0);
228 if (!BCRYPT_SUCCESS(status)) {
229 BCryptCloseAlgorithmProvider(hAlg, 0);
232 if (key_lengths.dwMinLength > aes_key_len
233 || key_lengths.dwMaxLength < aes_key_len) {
234 BCryptCloseAlgorithmProvider(hAlg, 0);
237 status = BCryptGetProperty(hAlg, BCRYPT_OBJECT_LENGTH, (PUCHAR)&keyObj_len,
238 sizeof(keyObj_len), &result, 0);
239 if (!BCRYPT_SUCCESS(status)) {
240 BCryptCloseAlgorithmProvider(hAlg, 0);
243 keyObj = (PBYTE)HeapAlloc(GetProcessHeap(), 0, keyObj_len);
244 if (keyObj == NULL) {
245 BCryptCloseAlgorithmProvider(hAlg, 0);
248 status = BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE,
249 (PUCHAR)BCRYPT_CHAIN_MODE_ECB, sizeof(BCRYPT_CHAIN_MODE_ECB), 0);
250 if (!BCRYPT_SUCCESS(status)) {
251 BCryptCloseAlgorithmProvider(hAlg, 0);
252 HeapFree(GetProcessHeap(), 0, keyObj);
255 status = BCryptGenerateSymmetricKey(hAlg, &hKey,
257 (PUCHAR)(uintptr_t)key, (ULONG)key_len, 0);
258 if (!BCRYPT_SUCCESS(status)) {
259 BCryptCloseAlgorithmProvider(hAlg, 0);
260 HeapFree(GetProcessHeap(), 0, keyObj);
266 ctx->keyObj = keyObj;
267 ctx->keyObj_len = keyObj_len;
268 ctx->encr_pos = AES_BLOCK_SIZE;
274 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
279 status = BCryptEncrypt(ctx->hKey, (PUCHAR)ctx->nonce, AES_BLOCK_SIZE,
280 NULL, NULL, 0, (PUCHAR)ctx->encr_buf, AES_BLOCK_SIZE,
282 return BCRYPT_SUCCESS(status) ? 0 : -1;
286 aes_ctr_release(archive_crypto_ctx *ctx)
289 if (ctx->hAlg != NULL) {
290 BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
292 BCryptDestroyKey(ctx->hKey);
294 HeapFree(GetProcessHeap(), 0, ctx->keyObj);
297 memset(ctx, 0, sizeof(*ctx));
301 #elif defined(HAVE_LIBMBEDCRYPTO) && defined(HAVE_MBEDTLS_AES_H)
304 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
306 mbedtls_aes_init(&ctx->ctx);
307 ctx->key_len = key_len;
308 memcpy(ctx->key, key, key_len);
309 memset(ctx->nonce, 0, sizeof(ctx->nonce));
310 ctx->encr_pos = AES_BLOCK_SIZE;
315 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
317 if (mbedtls_aes_setkey_enc(&ctx->ctx, ctx->key,
318 ctx->key_len * 8) != 0)
320 if (mbedtls_aes_crypt_ecb(&ctx->ctx, MBEDTLS_AES_ENCRYPT, ctx->nonce,
327 aes_ctr_release(archive_crypto_ctx *ctx)
329 mbedtls_aes_free(&ctx->ctx);
330 memset(ctx, 0, sizeof(*ctx));
334 #elif defined(HAVE_LIBNETTLE) && defined(HAVE_NETTLE_AES_H)
337 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
339 ctx->key_len = key_len;
340 memcpy(ctx->key, key, key_len);
341 memset(ctx->nonce, 0, sizeof(ctx->nonce));
342 ctx->encr_pos = AES_BLOCK_SIZE;
343 memset(&ctx->ctx, 0, sizeof(ctx->ctx));
348 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
350 aes_set_encrypt_key(&ctx->ctx, ctx->key_len, ctx->key);
351 aes_encrypt(&ctx->ctx, AES_BLOCK_SIZE, ctx->encr_buf, ctx->nonce);
356 aes_ctr_release(archive_crypto_ctx *ctx)
358 memset(ctx, 0, sizeof(*ctx));
362 #elif defined(HAVE_LIBCRYPTO)
365 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
367 if ((ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
371 case 16: ctx->type = EVP_aes_128_ecb(); break;
372 case 24: ctx->type = EVP_aes_192_ecb(); break;
373 case 32: ctx->type = EVP_aes_256_ecb(); break;
374 default: ctx->type = NULL; return -1;
377 ctx->key_len = key_len;
378 memcpy(ctx->key, key, key_len);
379 memset(ctx->nonce, 0, sizeof(ctx->nonce));
380 ctx->encr_pos = AES_BLOCK_SIZE;
381 #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
382 if (!EVP_CIPHER_CTX_reset(ctx->ctx)) {
383 EVP_CIPHER_CTX_free(ctx->ctx);
387 EVP_CIPHER_CTX_init(ctx->ctx);
393 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
398 r = EVP_EncryptInit_ex(ctx->ctx, ctx->type, NULL, ctx->key, NULL);
401 r = EVP_EncryptUpdate(ctx->ctx, ctx->encr_buf, &outl, ctx->nonce,
403 if (r == 0 || outl != AES_BLOCK_SIZE)
409 aes_ctr_release(archive_crypto_ctx *ctx)
411 EVP_CIPHER_CTX_free(ctx->ctx);
412 memset(ctx->key, 0, ctx->key_len);
413 memset(ctx->nonce, 0, sizeof(ctx->nonce));
419 #define ARCHIVE_CRYPTOR_STUB
422 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
424 (void)ctx; /* UNUSED */
425 (void)key; /* UNUSED */
426 (void)key_len; /* UNUSED */
431 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
433 (void)ctx; /* UNUSED */
438 aes_ctr_release(archive_crypto_ctx *ctx)
440 (void)ctx; /* UNUSED */
446 #ifdef ARCHIVE_CRYPTOR_STUB
448 aes_ctr_update(archive_crypto_ctx *ctx, const uint8_t * const in,
449 size_t in_len, uint8_t * const out, size_t *out_len)
451 (void)ctx; /* UNUSED */
452 (void)in; /* UNUSED */
453 (void)in_len; /* UNUSED */
454 (void)out; /* UNUSED */
455 (void)out_len; /* UNUSED */
456 aes_ctr_encrypt_counter(ctx); /* UNUSED */ /* Fix unused function warning */
462 aes_ctr_increase_counter(archive_crypto_ctx *ctx)
464 uint8_t *const nonce = ctx->nonce;
467 for (j = 0; j < 8; j++) {
474 aes_ctr_update(archive_crypto_ctx *ctx, const uint8_t * const in,
475 size_t in_len, uint8_t * const out, size_t *out_len)
477 uint8_t *const ebuf = ctx->encr_buf;
478 unsigned pos = ctx->encr_pos;
479 unsigned max = (unsigned)((in_len < *out_len)? in_len: *out_len);
482 for (i = 0; i < max; ) {
483 if (pos == AES_BLOCK_SIZE) {
484 aes_ctr_increase_counter(ctx);
485 if (aes_ctr_encrypt_counter(ctx) != 0)
487 while (max -i >= AES_BLOCK_SIZE) {
488 for (pos = 0; pos < AES_BLOCK_SIZE; pos++)
489 out[i+pos] = in[i+pos] ^ ebuf[pos];
491 aes_ctr_increase_counter(ctx);
492 if (aes_ctr_encrypt_counter(ctx) != 0)
499 out[i] = in[i] ^ ebuf[pos++];
507 #endif /* ARCHIVE_CRYPTOR_STUB */
510 const struct archive_cryptor __archive_cryptor =