cipher layer: IV length is not always block size
diff --git a/include/polarssl/cipher.h b/include/polarssl/cipher.h
index d73445c..c7ad5b7 100644
--- a/include/polarssl/cipher.h
+++ b/include/polarssl/cipher.h
@@ -152,10 +152,13 @@
POLARSSL_KEY_LENGTH_DES_EDE = 128,
/** Key length, in bits (including parity), for DES in three-key EDE */
POLARSSL_KEY_LENGTH_DES_EDE3 = 192,
- /** Maximum length of any IV, in bytes */
- POLARSSL_MAX_IV_LENGTH = 16,
};
+/** Maximum length of any IV, in bytes */
+#define POLARSSL_MAX_IV_LENGTH 16
+/** Maximum block size of any cipher, in bytes */
+#define POLARSSL_MAX_BLOCK_LENGTH 16
+
/**
* Base cipher information. The non-mode specific functions and values.
*/
@@ -248,7 +251,7 @@
int (*get_padding)( unsigned char *input, size_t ilen, size_t *data_len );
/** Buffer for data that hasn't been encrypted yet */
- unsigned char unprocessed_data[POLARSSL_MAX_IV_LENGTH];
+ unsigned char unprocessed_data[POLARSSL_MAX_BLOCK_LENGTH];
/** Number of bytes that still need processing */
size_t unprocessed_len;
