X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilccrypt%2Fsilccipher.h;h=a0503c899105d6ffa06c1f3c72fde2f8e332a2af;hb=e7b6c157b80152bf9fb9266e6bdd93f9fb0db776;hp=b24a69697d987b682eb9e970385ed61d2903cf73;hpb=c145f2f7712489b6530438b18bd71e5d1e6ec642;p=silc.git

diff --git a/lib/silccrypt/silccipher.h b/lib/silccrypt/silccipher.h
index b24a6969..a0503c89 100644
--- a/lib/silccrypt/silccipher.h
+++ b/lib/silccrypt/silccipher.h
@@ -95,6 +95,11 @@ typedef struct SilcCipherStruct *SilcCipher;
  *      The Electronic Codebook mode.  This mode does not provide sufficient
  *      security and should not be used.
  *
+ *    Each mode modifies the IV (initialization vector) of the cipher when
+ *    silc_cipher_encrypt or silc_cipher_decrypt is called.  The IV may be
+ *    set/reset by calling silc_cipher_set_iv and the current IV can be
+ *    retrieved by calling silc_cipher_get_iv.
+ *
  * SOURCE
  */
 typedef enum {
@@ -181,7 +186,7 @@ SilcBool silc_cipher_unregister_all(void);
  *
  * SYNOPSIS
  *
- *    SilcBool silc_cipher_alloc(const unsigned char *name,
+ *    SilcBool silc_cipher_alloc(const char *name,
  *                               SilcCipher *new_cipher);
  *
  * DESCRIPTION
@@ -206,7 +211,7 @@ SilcBool silc_cipher_unregister_all(void);
  *    Notes about modes:
  *
  ***/
-SilcBool silc_cipher_alloc(const unsigned char *name, SilcCipher *new_cipher);
+SilcBool silc_cipher_alloc(const char *name, SilcCipher *new_cipher);
 
 /****f* silccrypt/SilcCipherAPI/silc_cipher_free
  *
@@ -225,14 +230,14 @@ void silc_cipher_free(SilcCipher cipher);
  *
  * SYNOPSIS
  *
- * SilcBool silc_cipher_is_supported(const unsigned char *name);
+ * SilcBool silc_cipher_is_supported(const char *name);
  *
  * DESCRIPTION
  *
  *    Returns TRUE if cipher `name' is supported.
  *
  ***/
-SilcBool silc_cipher_is_supported(const unsigned char *name);
+SilcBool silc_cipher_is_supported(const char *name);
 
 /****f* silccrypt/SilcCipherAPI/silc_cipher_get_supported
  *
@@ -316,13 +321,16 @@ SilcBool silc_cipher_set_key(SilcCipher cipher, const unsigned char *key,
  *
  * DESCRIPTION
  *
- *    Sets the IV (initial vector) for the cipher.  The `iv' must be
+ *    Sets the IV (initialization vector) for the cipher.  The `iv' must be
  *    the size of the block size of the cipher.  If `iv' is NULL this
  *    does not do anything.
  *
  *    If the encryption mode is CTR (Counter mode) this also resets the
  *    the counter for a new block.  This is done also if `iv' is NULL.
  *
+ *    If the encryption mode is CFB (cipher feedback) this also resets the
+ *    the feedback stream for a new block.  This is done also if `iv' is NULL.
+ *
  ***/
 void silc_cipher_set_iv(SilcCipher cipher, const unsigned char *iv);