/* * crypto_types.h * * constants for cipher types and auth func types * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2017 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef SRTP_CRYPTO_TYPES_H #define SRTP_CRYPTO_TYPES_H /* * The null cipher performs no encryption. * * The SRTP_NULL_CIPHER leaves its inputs unaltered, during both the * encryption and decryption operations. This cipher can be chosen * to indicate that no encryption is to be performed. */ #define SRTP_NULL_CIPHER … /* * AES-128 Integer Counter Mode (AES ICM) * * AES-128 ICM is the variant of counter mode that is used by * Secure RTP. This cipher uses a 16-octet key concatenated with a * 14-octet offset (or salt) value. */ #define SRTP_AES_ICM_128 … /* * AES-192 Integer Counter Mode (AES ICM) * * AES-128 ICM is the variant of counter mode that is used by * Secure RTP. This cipher uses a 24-octet key concatenated with a * 14-octet offset (or salt) value. */ #define SRTP_AES_ICM_192 … /* * AES-256 Integer Counter Mode (AES ICM) * * AES-128 ICM is the variant of counter mode that is used by * Secure RTP. This cipher uses a 32-octet key concatenated with a * 14-octet offset (or salt) value. */ #define SRTP_AES_ICM_256 … /* * AES-128_GCM Galois Counter Mode (AES GCM) * * AES-128 GCM is the variant of galois counter mode that is used by * Secure RTP. This cipher uses a 16-octet key. */ #define SRTP_AES_GCM_128 … /* * AES-256_GCM Galois Counter Mode (AES GCM) * * AES-256 GCM is the variant of galois counter mode that is used by * Secure RTP. This cipher uses a 32-octet key. */ #define SRTP_AES_GCM_256 … /* * The null authentication function performs no authentication. * * The NULL_AUTH function does nothing, and can be selected to indicate * that authentication should not be performed. */ #define SRTP_NULL_AUTH … /* * HMAC-SHA1 * * SRTP_HMAC_SHA1 implements the Hash-based MAC using the NIST Secure * Hash Algorithm version 1 (SHA1). */ #define SRTP_HMAC_SHA1 … #endif /* SRTP_CRYPTO_TYPES_H */
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