| /** |
| * @file |
| * Encryption/decryption module documentation file. |
| */ |
| |
| /** |
| * @addtogroup encdec_module Encryption/decryption module |
| * |
| * The Encryption/decryption module provides encryption/decryption functions. |
| * One can differentiate between symmetric and asymmetric 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, |
| * Counter mode (CTR) and Galois Counter Mode (GCM) are implemented for |
| * specific algorithms. |
| * |
| * All symmetric encryption algorithms are accessible via the generic cipher layer |
| * (see \c cipher_init_ctx()). |
| * |
| * The asymmetric encryptrion algorithms are accessible via the generic public |
| * key layer (see \c pk_init()). |
| * |
| * The following algorithms are provided: |
| * - Symmetric: |
| * - AES (see \c aes_crypt_ecb(), \c aes_crypt_cbc(), \c aes_crypt_cfb128() and |
| * \c aes_crypt_ctr()). |
| * - ARCFOUR (see \c arc4_crypt()). |
| * - Blowfish / BF (see \c blowfish_crypt_ecb(), \c blowfish_crypt_cbc(), |
| * \c blowfish_crypt_cfb64() and \c blowfish_crypt_ctr()) |
| * - Camellia (see \c camellia_crypt_ecb(), \c camellia_crypt_cbc(), |
| * \c camellia_crypt_cfb128() and \c camellia_crypt_ctr()). |
| * - DES/3DES (see \c des_crypt_ecb(), \c des_crypt_cbc(), \c des3_crypt_ecb() |
| * and \c des3_crypt_cbc()). |
| * - GCM (AES-GCM and CAMELLIA-GCM) (see \c gcm_init()) |
| * - 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()). |
| * - Elliptic Curves over GF(p) (see \c ecp_point_init()). |
| * - Elliptic Curve Digital Signature Algorithm (ECDSA) (see \c ecdsa_init()). |
| * - Elliptic Curve Diffie Hellman (ECDH) (see \c ecdh_init()). |
| * |
| * 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. |
| */ |