| 12345678910111213141516171819202122232425262728293031323334353637 | /** * @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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