Add IV and block size getters for cipher_info
@@ -507,6 +507,41 @@ static inline const char *mbedtls_cipher_info_get_name(
return( info->MBEDTLS_PRIVATE(name) );
}
+/**
+ * \brief This function returns the size of the IV or nonce
+ * for the cipher info structure, in bytes.
+ *
+ * \param info The cipher info structure. This may be \c NULL.
+ *
+ * \return The recommended IV size.
+ * \return \c 0 for ciphers not using an IV or a nonce.
+ */
+static inline int mbedtls_cipher_info_get_iv_size(
+ const mbedtls_cipher_info_t *info )
+{
+ if( info == NULL )
+ return( 0 );
+
+ return( (int) info->MBEDTLS_PRIVATE(iv_size) );
+}
+
+/**
+ * \brief This function returns the block size of the given
+ * cipher info structure.
+ *
+ * \param info The cipher info structure. This may be \c NULL.
+ *
+ * \return The block size of the cipher.
+ */
+static inline unsigned int mbedtls_cipher_info_get_block_size(
+ const mbedtls_cipher_info_t *info )
+{
+ if( info == NULL )
+ return( 0 );
+
+ return( info->MBEDTLS_PRIVATE(block_size) );
+}
+
/**
* \brief This function initializes a \p cipher_context as NONE.
*
