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- Added cipher_get_cipher_mode() and cipher_get_cipher_operation() introspection functions (Closes ticket #40)

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This commit is contained in:
Paul Bakker 2011-11-11 10:53:37 +00:00
parent 2028156556
commit f7e5bb5904
1 changed files with 36 additions and 1 deletions
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37
include/polarssl/cipher.h
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@ -88,6 +88,7 @@ typedef enum {
} cipher_mode_t;
typedef enum {
POLARSSL_OPERATION_NONE = -1,
POLARSSL_DECRYPT = 0,
POLARSSL_ENCRYPT,
} operation_t;
@ -146,7 +147,7 @@ typedef struct {
/** Full cipher identifier (e.g. POLARSSL_CIPHER_AES_256_CBC) */
cipher_type_t type;
/** Cipher mode (e.g. POLARSSL_CIPHER_MODE_CBC) */
/** Cipher mode (e.g. POLARSSL_MODE_CBC) */
cipher_mode_t mode;
/** Cipher key length, in bits (default length for variable sized ciphers) */
@ -267,6 +268,23 @@ static inline unsigned int cipher_get_block_size( const cipher_context_t *ctx )
return ctx->cipher_info->block_size;
}
/**
* \brief Returns the mode of operation for the cipher.
* (e.g. POLARSSL_MODE_CBC)
*
* \param ctx cipher's context. Must have been initialised.
*
* \return mode of operation, or POLARSSL_MODE_NONE if ctx
* has not been initialised.
*/
static inline cipher_mode_t cipher_get_cipher_mode( const cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return POLARSSL_MODE_NONE;
return ctx->cipher_info->mode;
}
/**
* \brief Returns the size of the cipher's IV.
*
@ -331,6 +349,23 @@ static inline int cipher_get_key_size ( const cipher_context_t *ctx )
return ctx->key_length;
}
/**
* \brief Returns the operation of the given cipher.
*
* \param ctx cipher's context. Must have been initialised.
*
* \return operation (POLARSSL_ENCRYPT or POLARSSL_DECRYPT),
* or POLARSSL_OPERATION_NONE if ctx has not been
* initialised.
*/
static inline operation_t cipher_get_operation( const cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return POLARSSL_OPERATION_NONE;
return ctx->operation;
}
/**
* \brief Set the key to use with the given context.
*