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author | Michael Niedermayer <michaelni@gmx.at> | 2012-07-23 21:04:06 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-07-23 21:25:09 +0200 |
commit | 2cb4d516549526b5e17e941f6d2375a2c501ade6 (patch) | |
tree | f472c62e0b34c2faaa955d51874cddb6be759910 /libavformat/rtmpdh.h | |
parent | 7e15df7551cf45ad1d3e39d20fdc8d6c651d4705 (diff) | |
parent | d04c5293ce88927ad359ca276e287bfa63c2329d (diff) | |
download | ffmpeg-streaming-2cb4d516549526b5e17e941f6d2375a2c501ade6.zip ffmpeg-streaming-2cb4d516549526b5e17e941f6d2375a2c501ade6.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
v410dec: Implement explode mode support
zerocodec: fix direct rendering.
wav: init st to NULL to avoid a false-positive warning.
wavpack: set bits_per_raw_sample for S32 samples to properly identify 24-bit
h264: refactor NAL decode loop
RTMPTE protocol support
RTMPE protocol support
rtmp: Add ff_rtmp_calc_digest_pos()
rtmp: Rename rtmp_calc_digest to ff_rtmp_calc_digest and make it global
swscale: add missing HAVE_INLINE_ASM check.
lavfi: place x86 inline assembly under HAVE_INLINE_ASM.
vc1: Add a test for interlaced field pictures
swscale: Mark all init functions as av_cold
swscale: x86: Drop pointless _mmx suffix from filenames
lavf: use conditional notation for default codec in muxer declarations.
swscale: place inline assembly bilinear scaler under HAVE_INLINE_ASM.
dsputil: ppc: cosmetics: pretty-print
dsputil: x86: add SHUFFLE_MASK_W macro
configure: respect CC_O setting in check_cc
Conflicts:
Changelog
configure
libavcodec/v410dec.c
libavcodec/zerocodec.c
libavformat/asfenc.c
libavformat/version.h
libswscale/utils.c
libswscale/x86/swscale.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/rtmpdh.h')
-rw-r--r-- | libavformat/rtmpdh.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/libavformat/rtmpdh.h b/libavformat/rtmpdh.h new file mode 100644 index 0000000..cf262fc --- /dev/null +++ b/libavformat/rtmpdh.h @@ -0,0 +1,102 @@ +/* + * RTMP Diffie-Hellmann utilities + * Copyright (c) 2012 Samuel Pitoiset + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFORMAT_RTMPDH_H +#define AVFORMAT_RTMPDH_H + +#include "avformat.h" +#include "config.h" + +#if CONFIG_NETTLE || CONFIG_GCRYPT +#if CONFIG_NETTLE +#include <gmp.h> +#include <nettle/bignum.h> + +typedef mpz_ptr FFBigNum; +#elif CONFIG_GCRYPT +#include <gcrypt.h> + +typedef gcry_mpi_t FFBigNum; +#endif + +typedef struct FF_DH { + FFBigNum p; + FFBigNum g; + FFBigNum pub_key; + FFBigNum priv_key; + long length; +} FF_DH; + +#elif CONFIG_OPENSSL +#include <openssl/bn.h> +#include <openssl/dh.h> + +typedef BIGNUM *FFBigNum; +typedef DH FF_DH; +#endif + +/** + * Initialize a Diffie-Hellmann context. + * + * @param key_len length of the key + * @return a new Diffie-Hellmann context on success, NULL otherwise + */ +FF_DH *ff_dh_init(int key_len); + +/** + * Free a Diffie-Hellmann context. + * + * @param dh a Diffie-Hellmann context to free + */ +void ff_dh_free(FF_DH *dh); + +/** + * Generate a public key. + * + * @param dh a Diffie-Hellmann context + * @return zero on success, negative value otherwise + */ +int ff_dh_generate_public_key(FF_DH *dh); + +/** + * Write the public key into the given buffer. + * + * @param dh a Diffie-Hellmann context, containing the public key to write + * @param pub_key the buffer where the public key is written + * @param pub_key_len the length of the buffer + * @return zero on success, negative value otherwise + */ +int ff_dh_write_public_key(FF_DH *dh, uint8_t *pub_key, int pub_key_len); + +/** + * Compute the shared secret key from the private FF_DH value and the + * other party's public value. + * + * @param dh a Diffie-Hellmann context, containing the private key + * @param pub_key the buffer containing the public key + * @param pub_key_len the length of the buffer + * @param secret_key the buffer where the secret key is written + * @return length of the shared secret key on success, negative value otherwise + */ +int ff_dh_compute_shared_secret_key(FF_DH *dh, const uint8_t *pub_key, + int pub_key_len, uint8_t *secret_key); + +#endif /* AVFORMAT_RTMPDH_H */ |