libavformat/rtmpdh.c File Reference

RTMP Diffie-Hellmann utilities. More...

#include "config.h"
#include "rtmpdh.h"
#include "libavutil/random_seed.h"

Go to the source code of this file.

Defines
#define	P1024
#define	Q1024
Functions
static int	dh_is_valid_public_key (FFBigNum y, FFBigNum p, FFBigNum q)
av_cold FF_DH *	ff_dh_init (int key_len)
	Initialize a Diffie-Hellmann context.
int	ff_dh_generate_public_key (FF_DH *dh)
	Generate a public key.
int	ff_dh_write_public_key (FF_DH *dh, uint8_t *pub_key, int pub_key_len)
	Write the public key into the given buffer.
int	ff_dh_compute_shared_secret_key (FF_DH *dh, const uint8_t *pub_key, int pub_key_len, uint8_t *secret_key)
	Compute the shared secret key from the private FF_DH value and the other party's public value.

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Detailed Description

RTMP Diffie-Hellmann utilities.

Definition in file rtmpdh.c.

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Define Documentation

#define P1024

Value:

"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" \
    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" \
    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" \
    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" \
    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" \
    "FFFFFFFFFFFFFFFF"

Definition at line 33 of file rtmpdh.c.

Referenced by ff_dh_init().

#define Q1024

Value:

"7FFFFFFFFFFFFFFFE487ED5110B4611A62633145C06E0E68" \
    "948127044533E63A0105DF531D89CD9128A5043CC71A026E" \
    "F7CA8CD9E69D218D98158536F92F8A1BA7F09AB6B6A8E122" \
    "F242DABB312F3F637A262174D31BF6B585FFAE5B7A035BF6" \
    "F71C35FDAD44CFD2D74F9208BE258FF324943328F67329C0" \
    "FFFFFFFFFFFFFFFF"

Definition at line 41 of file rtmpdh.c.

Referenced by ff_dh_compute_shared_secret_key(), and ff_dh_generate_public_key().

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Function Documentation

static int dh_is_valid_public_key	(	FFBigNum	y,
		FFBigNum	p,
		FFBigNum	q
	)			[static]

Definition at line 198 of file rtmpdh.c.

Referenced by ff_dh_compute_shared_secret_key(), and ff_dh_generate_public_key().

int ff_dh_compute_shared_secret_key	(	FF_DH *	dh,
		const uint8_t *	pub_key,
		int	pub_key_len,
		uint8_t *	secret_key
	)

Compute the shared secret key from the private FF_DH value and the other party's public value.

Parameters:

	dh	a Diffie-Hellmann context, containing the private key
	pub_key	the buffer containing the public key
	pub_key_len	the length of the buffer
	secret_key	the buffer where the secret key is written

Returns:

length of the shared secret key on success, negative value otherwise

Definition at line 306 of file rtmpdh.c.

Referenced by ff_rtmpe_compute_secret_key().

int ff_dh_generate_public_key

(

FF_DH *

dh

)

Generate a public key.

Parameters:

dh

a Diffie-Hellmann context

Returns:

zero on success, negative value otherwise

Definition at line 264 of file rtmpdh.c.

Referenced by ff_rtmpe_gen_pub_key().

av_cold FF_DH* ff_dh_init

(

int

key_len

)

Initialize a Diffie-Hellmann context.

Parameters:

key_len

length of the key

Returns:

a new Diffie-Hellmann context on success, NULL otherwise

Definition at line 237 of file rtmpdh.c.

Referenced by ff_rtmpe_gen_pub_key().

int ff_dh_write_public_key	(	FF_DH *	dh,
		uint8_t *	pub_key,
		int	pub_key_len
	)

Write the public key into the given buffer.

Parameters:

	dh	a Diffie-Hellmann context, containing the public key to write
	pub_key	the buffer where the public key is written
	pub_key_len	the length of the buffer

Returns:

zero on success, negative value otherwise

Definition at line 290 of file rtmpdh.c.

Referenced by ff_rtmpe_gen_pub_key().