| /** |
| * @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. |
| */ |
