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diff --git a/old/vfdecrypt.c b/vfdecrypt.c
index 56d3530..b1a36d3 100644
--- a/old/vfdecrypt.c
+++ b/vfdecrypt.c
@@ -183,7 +183,7 @@ void adjust_v2_header_byteorder(cencrypted_v2_pwheader *pwhdr) {
pwhdr->encrypted_keyblob_size = htonl(pwhdr->encrypted_keyblob_size);
}
-HMAC_CTX hmacsha1_ctx;
+HMAC_CTX *hmacsha1_ctx;
AES_KEY aes_decrypt_key;
int CHUNK_SIZE=4096; // default
@@ -196,9 +196,9 @@ void compute_iv(uint32_t chunk_no, uint8_t *iv) {
unsigned int mdLen;
chunk_no = OSSwapHostToBigInt32(chunk_no);
- HMAC_Init_ex(&hmacsha1_ctx, NULL, 0, NULL, NULL);
- HMAC_Update(&hmacsha1_ctx, (void *) &chunk_no, sizeof(uint32_t));
- HMAC_Final(&hmacsha1_ctx, mdResult, &mdLen);
+ HMAC_Init_ex(hmacsha1_ctx, NULL, 0, NULL, NULL);
+ HMAC_Update(hmacsha1_ctx, (void *) &chunk_no, sizeof(uint32_t));
+ HMAC_Final(hmacsha1_ctx, mdResult, &mdLen);
memcpy(iv, mdResult, CIPHER_BLOCKSIZE);
}
@@ -212,52 +212,75 @@ void decrypt_chunk(uint8_t *ctext, uint8_t *ptext, uint32_t chunk_no) {
/* DES3-EDE unwrap operation loosely based on to RFC 2630, section 12.6
* wrapped_key has to be 40 bytes in length. */
int apple_des3_ede_unwrap_key(uint8_t *wrapped_key, int wrapped_key_len, uint8_t *decryptKey, uint8_t *unwrapped_key) {
- EVP_CIPHER_CTX ctx;
+ EVP_CIPHER_CTX *ctx;
uint8_t *TEMP1, *TEMP2, *CEKICV;
uint8_t IV[8] = { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
int outlen, tmplen, i;
- EVP_CIPHER_CTX_init(&ctx);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ ctx = EVP_CIPHER_CTX_new();
+#else
+ ctx = malloc(sizeof(*ctx));
+#endif
+ if (!ctx) {
+ fprintf(stderr, "Out of memory: EVP_CIPHER_CTX!\n");
+ return(-1);
+ }
+
+ EVP_CIPHER_CTX_init(ctx);
/* result of the decryption operation shouldn't be bigger than ciphertext */
TEMP1 = malloc(wrapped_key_len);
TEMP2 = malloc(wrapped_key_len);
CEKICV = malloc(wrapped_key_len);
/* uses PKCS#7 padding for symmetric key operations by default */
- EVP_DecryptInit_ex(&ctx, EVP_des_ede3_cbc(), NULL, decryptKey, IV);
+ EVP_DecryptInit_ex(ctx, EVP_des_ede3_cbc(), NULL, decryptKey, IV);
- if(!EVP_DecryptUpdate(&ctx, TEMP1, &outlen, wrapped_key, wrapped_key_len)) {
+ if(!EVP_DecryptUpdate(ctx, TEMP1, &outlen, wrapped_key, wrapped_key_len)) {
fprintf(stderr, "internal error (1) during key unwrap operation!\n");
return(-1);
}
- if(!EVP_DecryptFinal_ex(&ctx, TEMP1 + outlen, &tmplen)) {
+ if(!EVP_DecryptFinal_ex(ctx, TEMP1 + outlen, &tmplen)) {
fprintf(stderr, "internal error (2) during key unwrap operation!\n");
return(-1);
}
outlen += tmplen;
- EVP_CIPHER_CTX_cleanup(&ctx);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ EVP_CIPHER_CTX_reset(ctx);
+#else
+ EVP_CIPHER_CTX_cleanup(ctx);
+#endif
/* reverse order of TEMP3 */
for(i = 0; i < outlen; i++) TEMP2[i] = TEMP1[outlen - i - 1];
- EVP_CIPHER_CTX_init(&ctx);
+ EVP_CIPHER_CTX_init(ctx);
/* uses PKCS#7 padding for symmetric key operations by default */
- EVP_DecryptInit_ex(&ctx, EVP_des_ede3_cbc(), NULL, decryptKey, TEMP2);
- if(!EVP_DecryptUpdate(&ctx, CEKICV, &outlen, TEMP2+8, outlen-8)) {
+ EVP_DecryptInit_ex(ctx, EVP_des_ede3_cbc(), NULL, decryptKey, TEMP2);
+ if(!EVP_DecryptUpdate(ctx, CEKICV, &outlen, TEMP2+8, outlen-8)) {
fprintf(stderr, "internal error (3) during key unwrap operation!\n");
return(-1);
}
- if(!EVP_DecryptFinal_ex(&ctx, CEKICV + outlen, &tmplen)) {
+ if(!EVP_DecryptFinal_ex(ctx, CEKICV + outlen, &tmplen)) {
fprintf(stderr, "internal error (4) during key unwrap operation!\n");
return(-1);
}
outlen += tmplen;
- EVP_CIPHER_CTX_cleanup(&ctx);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ EVP_CIPHER_CTX_reset(ctx);
+#else
+ EVP_CIPHER_CTX_cleanup(ctx);
+#endif
memcpy(unwrapped_key, CEKICV+4, outlen-4);
free(TEMP1);
free(TEMP2);
free(CEKICV);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ EVP_CIPHER_CTX_free(ctx);
+#else
+ free(ctx);
+#endif
return(0);
}
@@ -279,31 +302,46 @@ int unwrap_v1_header(char *passphrase, cencrypted_v1_header *header, uint8_t *ae
int unwrap_v2_header(char *passphrase, cencrypted_v2_pwheader *header, uint8_t *aes_key, uint8_t *hmacsha1_key) {
/* derived key is a 3DES-EDE key */
uint8_t derived_key[192/8];
- EVP_CIPHER_CTX ctx;
+ EVP_CIPHER_CTX *ctx;
uint8_t *TEMP1;
int outlen, tmplen;
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ ctx = EVP_CIPHER_CTX_new();
+#else
+ ctx = malloc(sizeof(*ctx));
+#endif
+ if (!ctx) {
+ fprintf(stderr, "Out of memory: EVP_CIPHER_CTX!\n");
+ return(-1);
+ }
+
PKCS5_PBKDF2_HMAC_SHA1(passphrase, strlen(passphrase), (unsigned char*)header->kdf_salt, 20,
PBKDF2_ITERATION_COUNT, sizeof(derived_key), derived_key);
print_hex(derived_key, 192/8);
- EVP_CIPHER_CTX_init(&ctx);
+ EVP_CIPHER_CTX_init(ctx);
/* result of the decryption operation shouldn't be bigger than ciphertext */
TEMP1 = malloc(header->encrypted_keyblob_size);
/* uses PKCS#7 padding for symmetric key operations by default */
- EVP_DecryptInit_ex(&ctx, EVP_des_ede3_cbc(), NULL, derived_key, header->blob_enc_iv);
+ EVP_DecryptInit_ex(ctx, EVP_des_ede3_cbc(), NULL, derived_key, header->blob_enc_iv);
- if(!EVP_DecryptUpdate(&ctx, TEMP1, &outlen, header->encrypted_keyblob, header->encrypted_keyblob_size)) {
+ if(!EVP_DecryptUpdate(ctx, TEMP1, &outlen, header->encrypted_keyblob, header->encrypted_keyblob_size)) {
fprintf(stderr, "internal error (1) during key unwrap operation!\n");
return(-1);
}
- if(!EVP_DecryptFinal_ex(&ctx, TEMP1 + outlen, &tmplen)) {
+ if(!EVP_DecryptFinal_ex(ctx, TEMP1 + outlen, &tmplen)) {
fprintf(stderr, "internal error (2) during key unwrap operation!\n");
return(-1);
}
outlen += tmplen;
- EVP_CIPHER_CTX_cleanup(&ctx);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ EVP_CIPHER_CTX_free(ctx);
+#else
+ EVP_CIPHER_CTX_cleanup(ctx);
+ free(ctx);
+#endif
memcpy(aes_key, TEMP1, 16);
memcpy(hmacsha1_key, TEMP1, 20);
@@ -446,8 +484,21 @@ int main(int argc, char *argv[]) {
CHUNK_SIZE = v2header.blocksize;
}
- HMAC_CTX_init(&hmacsha1_ctx);
- HMAC_Init_ex(&hmacsha1_ctx, hmacsha1_key, sizeof(hmacsha1_key), EVP_sha1(), NULL);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ hmacsha1_ctx = HMAC_CTX_new();
+#else
+ hmacsha1_ctx = malloc(sizeof(*hmacsha1_ctx));
+#endif
+ if (!hmacsha1_ctx) {
+ fprintf(stderr, "Out of memory: HMAC CTX!\n");
+ exit(1);
+ }
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ HMAC_CTX_reset(hmacsha1_ctx);
+#else
+ HMAC_CTX_init(hmacsha1_ctx);
+#endif
+ HMAC_Init_ex(hmacsha1_ctx, hmacsha1_key, sizeof(hmacsha1_key), EVP_sha1(), NULL);
AES_set_decrypt_key(aes_key, CIPHER_KEY_LENGTH * 8, &aes_decrypt_key);
if (verbose >= 1) {
@@ -472,5 +523,11 @@ int main(int argc, char *argv[]) {
}
if (verbose) fprintf(stderr, "%"PRIX32" chunks written\n", chunk_no);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ HMAC_CTX_free(hmacsha1_ctx);
+#else
+ HMAC_CTX_cleanup(hmacsha1_ctx);
+ free(hmacsha1_ctx);
+#endif
return(0);
}
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