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Create a 'flags' field in cipher_info

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This commit is contained in:
Manuel Pégourié-Gonnard 2014-06-23 11:33:18 +02:00
parent 0c1ec479fe
commit 81754a0c35
3 changed files with 18 additions and 15 deletions
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7
include/polarssl/cipher.h
View File

@ -61,6 +61,9 @@
#define POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED -0x6280 /**< Decryption of block requires a full block. */
#define POLARSSL_ERR_CIPHER_AUTH_FAILED -0x6300 /**< Authentication failed (for AEAD modes). */
#define POLARSSL_CIPHER_VARIABLE_IV_LEN 0x01 /**< Cipher accepts IVs of variable length */
#define POLARSSL_CIPHER_VARIABLE_KEY_LEN 0x02 /**< Cipher accepts keys of variable length */
#ifdef __cplusplus
extern "C" {
#endif
@ -238,8 +241,8 @@ typedef struct {
* For cipher that accept many sizes: recommended size */
unsigned int iv_size;
/** Flag for ciphers that accept many sizes of IV/NONCE */
int accepts_variable_iv_size;
/** Flags for variable IV size, variable key size, etc. */
int flags;
/** block size, in bytes */
unsigned int block_size;

2
library/cipher.c
View File

@ -204,7 +204,7 @@ int cipher_set_iv( cipher_context_t *ctx,
if( iv_len > POLARSSL_MAX_IV_LENGTH )
return( POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE );
if( ctx->cipher_info->accepts_variable_iv_size )
if( ( ctx->cipher_info->flags & POLARSSL_CIPHER_VARIABLE_IV_LEN ) != 0 )
actual_iv_size = iv_len;
else
{

24
library/cipher_wrap.c
View File

@ -374,7 +374,7 @@ const cipher_info_t aes_128_gcm_info = {
128,
"AES-128-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_aes_info
};
@ -385,7 +385,7 @@ const cipher_info_t aes_192_gcm_info = {
192,
"AES-192-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_aes_info
};
@ -396,7 +396,7 @@ const cipher_info_t aes_256_gcm_info = {
256,
"AES-256-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_aes_info
};
@ -429,7 +429,7 @@ const cipher_info_t aes_128_ccm_info = {
128,
"AES-128-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_aes_info
};
@ -440,7 +440,7 @@ const cipher_info_t aes_192_ccm_info = {
192,
"AES-192-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_aes_info
};
@ -451,7 +451,7 @@ const cipher_info_t aes_256_ccm_info = {
256,
"AES-256-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_aes_info
};
@ -728,7 +728,7 @@ const cipher_info_t camellia_128_gcm_info = {
128,
"CAMELLIA-128-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_camellia_info
};
@ -739,7 +739,7 @@ const cipher_info_t camellia_192_gcm_info = {
192,
"CAMELLIA-192-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_camellia_info
};
@ -750,7 +750,7 @@ const cipher_info_t camellia_256_gcm_info = {
256,
"CAMELLIA-256-GCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&gcm_camellia_info
};
@ -783,7 +783,7 @@ const cipher_info_t camellia_128_ccm_info = {
128,
"CAMELLIA-128-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_camellia_info
};
@ -794,7 +794,7 @@ const cipher_info_t camellia_192_ccm_info = {
192,
"CAMELLIA-192-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_camellia_info
};
@ -805,7 +805,7 @@ const cipher_info_t camellia_256_ccm_info = {
256,
"CAMELLIA-256-CCM",
12,
1,
POLARSSL_CIPHER_VARIABLE_IV_LEN,
16,
&ccm_camellia_info
};