diff --git a/doxygen/input/doc_encdec.h b/doxygen/input/doc_encdec.h
index 48e8a54..a1b7e16 100644
--- a/doxygen/input/doc_encdec.h
+++ b/doxygen/input/doc_encdec.h
@@ -12,21 +12,23 @@
  * ones for key exchange and message integrity.
  * Some symmetric algorithms provide different block cipher modes, mainly 
  * Electronic Code Book (ECB) which is used for short (64-bit) messages and 
- * Cipher Block Chaining (CBC) which provides the randomness needed for longer 
- * messages. 
+ * Cipher Block Chaining (CBC) which provides the structure needed for longer 
+ * messages. In addition the Cipher Feedback Mode (CFB-128) stream cipher mode
+ * is implemented for specific algorithms.
+ *
  * Sometimes the same functions are used for encryption and decryption.
  * The following algorithms are provided:
  * - Symmetric:
- *   - AES (see \c aes_crypt_ecb() and\c aes_crypt_cbc()).
+ *   - AES (see \c aes_crypt_ecb(), \c aes_crypt_cbc() and \c aes_crypt_cfb128()).
  *   - ARCFOUR (see \c arc4_crypt()).
- *   - Camellia (see \c camellia_crypt_ecb() and\c camellia_crypt_cbc()).
- *   - DES/3DES (see \c des_crypt_ecb(),\c des_crypt_cbc(),\c des3_crypt_ecb() 
- *     and\c des3_crypt_cbc()).
+ *   - Camellia (see \c camellia_crypt_ecb(), \c camellia_crypt_cbc() and \c camellia_crypt_cfb128()).
+ *   - DES/3DES (see \c des_crypt_ecb(), \c des_crypt_cbc(), \c des3_crypt_ecb() 
+ *     and \c des3_crypt_cbc()).
  *   - XTEA (see \c xtea_crypt_ecb()).
  * - Asymmetric:
- *   - Diffie-Hellman-Merkle (see \c dhm_read_public(),\c dhm_make_public() 
+ *   - Diffie-Hellman-Merkle (see \c dhm_read_public(), \c dhm_make_public() 
  *     and \c dhm_calc_secret()).
- *   - RSA (see \c rsa_public() and\c rsa_private()).
+ *   - RSA (see \c rsa_public() and \c rsa_private()).
  *
  * This module provides encryption/decryption which can be used to provide 
  * secrecy.