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bc397246aa
The test code is updated with some cosmetics to avoid the loop using undefined AVHMACType values. The old enum values will be removed in the next major bump, effectively making both projects synced and without API or ABI issues. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: James Almer <jamrial@gmail.com>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* Copyright (C) 2012 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_HMAC_H
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#define AVUTIL_HMAC_H
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#include <stdint.h>
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#include "version.h"
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/**
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* @defgroup lavu_hmac HMAC
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* @ingroup lavu_crypto
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* @{
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*/
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enum AVHMACType {
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AV_HMAC_MD5,
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AV_HMAC_SHA1,
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AV_HMAC_SHA224,
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AV_HMAC_SHA256,
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#if FF_API_HMAC
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AV_HMAC_SHA224_DEPRECATED = 10,
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AV_HMAC_SHA256_DEPRECATED,
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#endif
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AV_HMAC_SHA384 = 12,
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AV_HMAC_SHA512,
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};
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typedef struct AVHMAC AVHMAC;
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/**
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* Allocate an AVHMAC context.
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* @param type The hash function used for the HMAC.
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*/
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AVHMAC *av_hmac_alloc(enum AVHMACType type);
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/**
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* Free an AVHMAC context.
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* @param ctx The context to free, may be NULL
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*/
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void av_hmac_free(AVHMAC *ctx);
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/**
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* Initialize an AVHMAC context with an authentication key.
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* @param ctx The HMAC context
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* @param key The authentication key
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* @param keylen The length of the key, in bytes
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*/
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void av_hmac_init(AVHMAC *ctx, const uint8_t *key, unsigned int keylen);
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/**
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* Hash data with the HMAC.
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* @param ctx The HMAC context
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* @param data The data to hash
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* @param len The length of the data, in bytes
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*/
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void av_hmac_update(AVHMAC *ctx, const uint8_t *data, unsigned int len);
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/**
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* Finish hashing and output the HMAC digest.
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* @param ctx The HMAC context
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* @param out The output buffer to write the digest into
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* @param outlen The length of the out buffer, in bytes
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* @return The number of bytes written to out, or a negative error code.
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*/
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int av_hmac_final(AVHMAC *ctx, uint8_t *out, unsigned int outlen);
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/**
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* Hash an array of data with a key.
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* @param ctx The HMAC context
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* @param data The data to hash
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* @param len The length of the data, in bytes
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* @param key The authentication key
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* @param keylen The length of the key, in bytes
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* @param out The output buffer to write the digest into
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* @param outlen The length of the out buffer, in bytes
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* @return The number of bytes written to out, or a negative error code.
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*/
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int av_hmac_calc(AVHMAC *ctx, const uint8_t *data, unsigned int len,
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const uint8_t *key, unsigned int keylen,
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uint8_t *out, unsigned int outlen);
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/**
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* @}
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*/
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#endif /* AVUTIL_HMAC_H */
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