Referencia del Archivo src/libdigidoc/openssl/crypto/ecdsa/ecs_sign.c

#include "ecs_locl.h"
#include <openssl/engine.h>
#include <openssl/rand.h>

Funciones
ECDSA_SIG *	ECDSA_do_sign (const unsigned char *dgst, int dlen, EC_KEY *eckey)
ECDSA_SIG *	ECDSA_do_sign_ex (const unsigned char *dgst, int dlen, const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey)
int	ECDSA_sign (int type, const unsigned char *dgst, int dlen, unsigned char *sig, unsigned int *siglen, EC_KEY *eckey)
int	ECDSA_sign_ex (int type, const unsigned char *dgst, int dlen, unsigned char *sig, unsigned int *siglen, const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey)
int	ECDSA_sign_setup (EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp)

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Documentación de las funciones

ECDSA_SIG* ECDSA_do_sign	(	const unsigned char *	dgst,
		int	dgst_len,
		EC_KEY *	eckey
	)

ECDSA_do_sign computes the ECDSA signature of the given hash value using the supplied private key and returns the created signature.

Parámetros:

dgst	pointer to the hash value
dgst_len	length of the hash value
eckey	pointer to the EC_KEY object containing a private EC key

Devuelve:

pointer to a ECDSA_SIG structure or NULL

ECDSA_SIG* ECDSA_do_sign_ex	(	const unsigned char *	dgst,
		int	dgstlen,
		const BIGNUM *	kinv,
		const BIGNUM *	rp,
		EC_KEY *	eckey
	)

ECDSA_do_sign_ex computes ECDSA signature of a given hash value using the supplied private key (note: sig must point to ECDSA_size(eckey) bytes of memory).

Parámetros:

dgst	pointer to the hash value to sign
dgstlen	length of the hash value
kinv	optional pointer to a pre-computed inverse k
rp	optional pointer to the pre-computed rp value (see ECDSA_sign_setup
eckey	pointer to the EC_KEY object containing a private EC key

Devuelve:

pointer to a ECDSA_SIG structure or NULL

int ECDSA_sign	(	int	type,
		const unsigned char *	dgst,
		int	dgstlen,
		unsigned char *	sig,
		unsigned int *	siglen,
		EC_KEY *	eckey
	)

ECDSA_sign computes ECDSA signature of a given hash value using the supplied private key (note: sig must point to ECDSA_size(eckey) bytes of memory).

Parámetros:

type	this parameter is ignored
dgst	pointer to the hash value to sign
dgstlen	length of the hash value
sig	buffer to hold the DER encoded signature
siglen	pointer to the length of the returned signature
eckey	pointer to the EC_KEY object containing a private EC key

Devuelve:

1 on success and 0 otherwise

int ECDSA_sign_ex	(	int	type,
		const unsigned char *	dgst,
		int	dgstlen,
		unsigned char *	sig,
		unsigned int *	siglen,
		const BIGNUM *	kinv,
		const BIGNUM *	rp,
		EC_KEY *	eckey
	)

ECDSA_sign_ex computes ECDSA signature of a given hash value using the supplied private key (note: sig must point to ECDSA_size(eckey) bytes of memory).

Parámetros:

type	this parameter is ignored
dgst	pointer to the hash value to sign
dgstlen	length of the hash value
sig	buffer to hold the DER encoded signature
siglen	pointer to the length of the returned signature
kinv	optional pointer to a pre-computed inverse k
rp	optional pointer to the pre-computed rp value (see ECDSA_sign_setup
eckey	pointer to the EC_KEY object containing a private EC key

Devuelve:

1 on success and 0 otherwise

int ECDSA_sign_setup	(	EC_KEY *	eckey,
		BN_CTX *	ctx,
		BIGNUM **	kinv,
		BIGNUM **	rp
	)

ECDSA_sign_setup precompute parts of the signing operation.

Parámetros:

eckey	pointer to the EC_KEY object containing a private EC key
ctx	pointer to a BN_CTX object (may be NULL)
kinv	pointer to a BIGNUM pointer for the inverse of k
rp	pointer to a BIGNUM pointer for x coordinate of k * generator

Devuelve:

1 on success and 0 otherwise