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- /**
- * @file
- * Encryption/decryption module documentation file.
- */
- /**
- * @addtogroup encdec_module Encryption/decryption module
- *
- * The Encryption/decryption module provides encryption/decryption functions.
- * One can differtiate between symmetric and asymetric algorithms; the
- * symmetric ones are mostly used for message confidentiality and the asymmetric
- * 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 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(), \c aes_crypt_cbc() and \c aes_crypt_cfb128()).
- * - ARCFOUR (see \c arc4_crypt()).
- * - 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()
- * and \c dhm_calc_secret()).
- * - RSA (see \c rsa_public() and \c rsa_private()).
- *
- * This module provides encryption/decryption which can be used to provide
- * secrecy.
- * It also provides asymmetric key functions which can be used for
- * confidentiality, integrity, authentication and non-repudiation.
- */
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