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Copyright © 2001 - 2007 SILC Project
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+ + + +
+
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+
+ 		+ + + + +
+
+ +Function silc_cipher_alloc

+ + +SYNOPSIS + +

+    SilcBool silc_cipher_alloc(const unsigned char *name,
+                               SilcCipher *new_cipher);
+
+
+DESCRIPTION + +

+    Allocates a new SILC cipher object. Function returns 1 on succes and 0
+    on error. The allocated cipher is returned in new_cipher argument. The
+    caller must set the key to the cipher after this function has returned
+    by calling the ciphers set_key function.
+
+    The following ciphers are supported:
+
+    aes-256-ctr            AES-256, Counter mode
+    aes-192-ctr            AES-192, Counter mode
+    aes-128-ctr            AES,128, Counter mode
+    aes-256-cbc            AES-256, Cipher block chaining mode
+    aes-192-cbc            AES-192, Cipher block chaining mode
+    aes-128-cbc            AES,128, Cipher block chaining mode
+    twofish-256-cbc        Twofish-256, Cipher block chaining mode
+    twofish-192-cbc        Twofish-192, Cipher block chaining mode
+    twofish-128-cbc        Twofish-128, Cipher block chaining mode
+
+    Notes about modes:
+
+    The CTR is normal counter mode.  The CTR mode does not require the
+    plaintext length to be multiple by the cipher block size.  If the last
+    plaintext block is shorter the remaining bits of the key stream are
+    used next time silc_cipher_encrypt is called.  If silc_cipher_set_iv
+    is called it will reset the counter for a new block (discarding any
+    remaining bits from previous key stream).
+
+    The CBC is mode is a standard CBC mode.  The plaintext length must be
+    multiple by the cipher block size.  If it isn't the plaintext must be
+    padded.
+
+
+



+
+ 		+ + + + +
+
+ +SILC Cipher Interface
+SilcCipher
+SilcCipherMode
+silc_cipher_register
+silc_cipher_unregister
+silc_cipher_register_default
+silc_cipher_unregister_all
+silc_cipher_alloc
+silc_cipher_free
+silc_cipher_is_supported
+silc_cipher_get_supported
+silc_cipher_encrypt
+silc_cipher_decrypt
+silc_cipher_set_key
+silc_cipher_set_iv
+silc_cipher_get_iv
+silc_cipher_get_key_len
+silc_cipher_get_block_len
+silc_cipher_get_iv_len
+silc_cipher_get_name
+silc_cipher_get_mode
+ + +



+
+
+ + + +
+ + + + + + +
Copyright © 2001 - 2007 SILC Project
+ SILC Project Website		 + SILC Toolkit Reference Manual
+ Index
+ + +