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.

Macros
#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.

Detailed Description

RTMP Diffie-Hellmann utilities.

Definition in file rtmpdh.c.

Macro Definition 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().

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().

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_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().

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().

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().