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52 lines
2.3 KiB
C
52 lines
2.3 KiB
C
/**
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* @file
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* Encryption/decryption module documentation file.
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*/
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/**
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* @addtogroup encdec_module Encryption/decryption module
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*
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* The Encryption/decryption module provides encryption/decryption functions.
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* One can differentiate between symmetric and asymmetric algorithms; the
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* symmetric ones are mostly used for message confidentiality and the asymmetric
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* ones for key exchange and message integrity.
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* Some symmetric algorithms provide different block cipher modes, mainly
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* Electronic Code Book (ECB) which is used for short (64-bit) messages and
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* Cipher Block Chaining (CBC) which provides the structure needed for longer
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* messages. In addition the Cipher Feedback Mode (CFB-128) stream cipher mode,
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* Counter mode (CTR) and Galois Counter Mode (GCM) are implemented for
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* specific algorithms.
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*
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* All symmetric encryption algorithms are accessible via the generic cipher layer
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* (see \c cipher_init_ctx()).
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*
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* The asymmetric encryptrion algorithms are accessible via the generic public
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* key layer (see \c pk_init()).
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*
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* The following algorithms are provided:
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* - Symmetric:
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* - AES (see \c aes_crypt_ecb(), \c aes_crypt_cbc(), \c aes_crypt_cfb128() and
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* \c aes_crypt_ctr()).
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* - ARCFOUR (see \c arc4_crypt()).
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* - Blowfish / BF (see \c blowfish_crypt_ecb(), \c blowfish_crypt_cbc(),
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* \c blowfish_crypt_cfb64() and \c blowfish_crypt_ctr())
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* - Camellia (see \c camellia_crypt_ecb(), \c camellia_crypt_cbc(),
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* \c camellia_crypt_cfb128() and \c camellia_crypt_ctr()).
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* - DES/3DES (see \c des_crypt_ecb(), \c des_crypt_cbc(), \c des3_crypt_ecb()
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* and \c des3_crypt_cbc()).
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* - XTEA (see \c xtea_crypt_ecb()).
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* - Asymmetric:
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* - Diffie-Hellman-Merkle (see \c dhm_read_public(), \c dhm_make_public()
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* and \c dhm_calc_secret()).
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* - RSA (see \c rsa_public() and \c rsa_private()).
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* - Elliptic Curves over GF(p) (see \c ecp_point_init()).
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* - Elliptic Curve Digital Signature Algorithm (ECDSA) (see \c ecdsa_init()).
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* - Elliptic Curve Diffie Hellman (ECDH) (see \c ecdh_init()).
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*
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* This module provides encryption/decryption which can be used to provide
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* secrecy.
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*
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* It also provides asymmetric key functions which can be used for
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* confidentiality, integrity, authentication and non-repudiation.
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*/
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