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Hakase
2018-06-02 16:25:21 +09:00
parent 9335fb2e19
commit e3a2ed3d39
37 changed files with 938 additions and 222 deletions
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crypto/modes/wrap128.c
+8 -6
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@@ -237,7 +237,7 @@ size_t CRYPTO_128_wrap_pad(void *key, const unsigned char *icv,
*
* @param[in] key Key value.
* @param[in] icv (Non-standard) IV, 4 bytes. NULL = use default_aiv.
* @param[out] out Plaintext. Minimal buffer length = inlen bytes.
* @param[out] out Plaintext. Minimal buffer length = (inlen - 8) bytes.
* Input and output buffers can overlap if block function
* supports that.
* @param[in] in Ciphertext as n 64-bit blocks.
@@ -267,7 +267,6 @@ size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
if ((inlen & 0x7) != 0 || inlen < 16 || inlen >= CRYPTO128_WRAP_MAX)
return 0;
memmove(out, in, inlen);
if (inlen == 16) {
/*
* Section 4.2 - special case in step 1: When n=1, the ciphertext
@@ -275,14 +274,17 @@ size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
* single AES block using AES in ECB mode: AIV | P[1] = DEC(K, C[0] |
* C[1])
*/
block(out, out, key);
memcpy(aiv, out, 8);
unsigned char buff[16];
block(in, buff, key);
memcpy(aiv, buff, 8);
/* Remove AIV */
memmove(out, out + 8, 8);
memcpy(out, buff + 8, 8);
padded_len = 8;
OPENSSL_cleanse(buff, inlen);
} else {
padded_len = inlen - 8;
ret = crypto_128_unwrap_raw(key, aiv, out, out, inlen, block);
ret = crypto_128_unwrap_raw(key, aiv, out, in, inlen, block);
if (padded_len != ret) {
OPENSSL_cleanse(out, inlen);
return 0;