pigweed / third_party / github / ARMmbed / mbedtls / bfe754947c590cb479374611df510561011bb241 / . / doxygen / input / doc_encdec.h

/** | |

* \file doc_encdec.h | |

* | |

* \brief Encryption/decryption module documentation file. | |

*/ | |

/* | |

* | |

* Copyright The Mbed TLS Contributors | |

* SPDX-License-Identifier: Apache-2.0 | |

* | |

* Licensed under the Apache License, Version 2.0 (the "License"); you may | |

* not use this file except in compliance with the License. | |

* You may obtain a copy of the License at | |

* | |

* http://www.apache.org/licenses/LICENSE-2.0 | |

* | |

* Unless required by applicable law or agreed to in writing, software | |

* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | |

* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |

* See the License for the specific language governing permissions and | |

* limitations under the License. | |

*/ | |

/** | |

* @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 mbedtls_cipher_setup()). | |

* | |

* The asymmetric encryptrion algorithms are accessible via the generic public | |

* key layer (see \c mbedtls_pk_init()). | |

* | |

* The following algorithms are provided: | |

* - Symmetric: | |

* - AES (see \c mbedtls_aes_crypt_ecb(), \c mbedtls_aes_crypt_cbc(), \c mbedtls_aes_crypt_cfb128() and | |

* \c mbedtls_aes_crypt_ctr()). | |

* - ARCFOUR (see \c mbedtls_arc4_crypt()). | |

* - Blowfish / BF (see \c mbedtls_blowfish_crypt_ecb(), \c mbedtls_blowfish_crypt_cbc(), | |

* \c mbedtls_blowfish_crypt_cfb64() and \c mbedtls_blowfish_crypt_ctr()) | |

* - Camellia (see \c mbedtls_camellia_crypt_ecb(), \c mbedtls_camellia_crypt_cbc(), | |

* \c mbedtls_camellia_crypt_cfb128() and \c mbedtls_camellia_crypt_ctr()). | |

* - DES/3DES (see \c mbedtls_des_crypt_ecb(), \c mbedtls_des_crypt_cbc(), \c mbedtls_des3_crypt_ecb() | |

* and \c mbedtls_des3_crypt_cbc()). | |

* - GCM (AES-GCM and CAMELLIA-GCM) (see \c mbedtls_gcm_init()) | |

* - XTEA (see \c mbedtls_xtea_crypt_ecb()). | |

* - Asymmetric: | |

* - Diffie-Hellman-Merkle (see \c mbedtls_dhm_read_public(), \c mbedtls_dhm_make_public() | |

* and \c mbedtls_dhm_calc_secret()). | |

* - RSA (see \c mbedtls_rsa_public() and \c mbedtls_rsa_private()). | |

* - Elliptic Curves over GF(p) (see \c mbedtls_ecp_point_init()). | |

* - Elliptic Curve Digital Signature Algorithm (ECDSA) (see \c mbedtls_ecdsa_init()). | |

* - Elliptic Curve Diffie Hellman (ECDH) (see \c mbedtls_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. | |

*/ |