117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/*
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* crypto_types.h
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*
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* constants for cipher types and auth func types
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*
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* David A. McGrew
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* Cisco Systems, Inc.
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*/
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/*
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*
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* Copyright(c) 2001-2017 Cisco Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* Neither the name of the Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef SRTP_CRYPTO_TYPES_H
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#define SRTP_CRYPTO_TYPES_H
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/*
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* The null cipher performs no encryption.
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*
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* The SRTP_NULL_CIPHER leaves its inputs unaltered, during both the
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* encryption and decryption operations. This cipher can be chosen
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* to indicate that no encryption is to be performed.
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*/
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#define SRTP_NULL_CIPHER 0
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/*
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* AES-128 Integer Counter Mode (AES ICM)
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*
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* AES-128 ICM is the variant of counter mode that is used by
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* Secure RTP. This cipher uses a 16-octet key concatenated with a
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* 14-octet offset (or salt) value.
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*/
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#define SRTP_AES_ICM_128 1
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/*
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* AES-192 Integer Counter Mode (AES ICM)
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*
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* AES-128 ICM is the variant of counter mode that is used by
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* Secure RTP. This cipher uses a 24-octet key concatenated with a
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* 14-octet offset (or salt) value.
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*/
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#define SRTP_AES_ICM_192 4
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/*
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* AES-256 Integer Counter Mode (AES ICM)
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*
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* AES-128 ICM is the variant of counter mode that is used by
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* Secure RTP. This cipher uses a 32-octet key concatenated with a
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* 14-octet offset (or salt) value.
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*/
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#define SRTP_AES_ICM_256 5
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/*
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* AES-128_GCM Galois Counter Mode (AES GCM)
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*
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* AES-128 GCM is the variant of galois counter mode that is used by
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* Secure RTP. This cipher uses a 16-octet key.
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*/
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#define SRTP_AES_GCM_128 6
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/*
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* AES-256_GCM Galois Counter Mode (AES GCM)
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*
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* AES-256 GCM is the variant of galois counter mode that is used by
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* Secure RTP. This cipher uses a 32-octet key.
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*/
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#define SRTP_AES_GCM_256 7
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/*
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* The null authentication function performs no authentication.
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*
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* The NULL_AUTH function does nothing, and can be selected to indicate
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* that authentication should not be performed.
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*/
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#define SRTP_NULL_AUTH 0
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/*
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* HMAC-SHA1
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*
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* SRTP_HMAC_SHA1 implements the Hash-based MAC using the NIST Secure
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* Hash Algorithm version 1 (SHA1).
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*/
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#define SRTP_HMAC_SHA1 3
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#endif /* SRTP_CRYPTO_TYPES_H */
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