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ECDSA_SIG: add simple getters for commonly used struct members

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Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6290)
This commit is contained in:
Dr. Matthias St. Pierre 2018-05-27 09:08:08 +02:00
parent 6692ff7777
commit 0396401d1c
4 changed files with 36 additions and 6 deletions
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10
crypto/ec/ec_asn1.c
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@ -1183,6 +1183,16 @@ void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
*ps = sig->s;
}
const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig)
{
return sig->r;
}
const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig)
{
return sig->s;
}
int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
{
if (r == NULL || s == NULL)

14
doc/man3/ECDSA_SIG_new.pod
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@ -2,7 +2,7 @@
=head1 NAME
ECDSA_SIG_get0, ECDSA_SIG_set0,
ECDSA_SIG_get0, ECDSA_SIG_get0_r, ECDSA_SIG_get0_s, ECDSA_SIG_set0,
ECDSA_SIG_new, ECDSA_SIG_free, i2d_ECDSA_SIG, d2i_ECDSA_SIG, ECDSA_size,
ECDSA_sign, ECDSA_do_sign, ECDSA_verify, ECDSA_do_verify, ECDSA_sign_setup,
ECDSA_sign_ex, ECDSA_do_sign_ex - low level elliptic curve digital signature
@ -15,6 +15,8 @@ algorithm (ECDSA) functions
ECDSA_SIG *ECDSA_SIG_new(void);
void ECDSA_SIG_free(ECDSA_SIG *sig);
void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
@ -53,7 +55,12 @@ OpenSSL 1.1.0 the: the B<r> and B<s> components were initialised.
ECDSA_SIG_free() frees the B<ECDSA_SIG> structure B<sig>.
ECDSA_SIG_get0() returns internal pointers the B<r> and B<s> values contained
in B<sig>.
in B<sig> and stores them in B<*pr> and B<*ps>, respectively.
The pointer B<pr> or B<ps> can be NULL, in which case the corresponding value
is not returned.
The values B<r>, B<s> can also be retrieved separately by the corresponding
function ECDSA_SIG_get0_r() and ECDSA_SIG_get0_s(), respectively.
The B<r> and B<s> values can be set by calling ECDSA_SIG_set0() and passing the
new values for B<r> and B<s> as parameters to the function. Calling this
@ -116,6 +123,9 @@ returned as a newly allocated B<ECDSA_SIG> structure (or NULL on error).
ECDSA_SIG_set0() returns 1 on success or 0 on failure.
ECDSA_SIG_get0_r() and ECDSA_SIG_get0_s() return the corresponding value,
or NULL if it is unset.
ECDSA_size() returns the maximum length signature or 0 on error.
ECDSA_sign(), ECDSA_sign_ex() and ECDSA_sign_setup() return 1 if successful

16
include/openssl/ec.h
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@ -1060,16 +1060,24 @@ int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
/** Accessor for r and s fields of ECDSA_SIG
* \param sig pointer to ECDSA_SIG pointer
* \param sig pointer to ECDSA_SIG structure
* \param pr pointer to BIGNUM pointer for r (may be NULL)
* \param ps pointer to BIGNUM pointer for s (may be NULL)
*/
void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
/** Accessor for r field of ECDSA_SIG
* \param sig pointer to ECDSA_SIG structure
*/
const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
/** Accessor for s field of ECDSA_SIG
* \param sig pointer to ECDSA_SIG structure
*/
const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
/** Setter for r and s fields of ECDSA_SIG
* \param sig pointer to ECDSA_SIG pointer
* \param r pointer to BIGNUM for r (may be NULL)
* \param s pointer to BIGNUM for s (may be NULL)
* \param sig pointer to ECDSA_SIG structure
*/
int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);

2
util/libcrypto.num
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@ -4546,3 +4546,5 @@ RSA_get0_e 4487 1_1_1 EXIST::FUNCTION:RSA
RSA_get0_q 4488 1_1_1 EXIST::FUNCTION:RSA
RSA_get0_p 4489 1_1_1 EXIST::FUNCTION:RSA
RSA_get0_iqmp 4490 1_1_1 EXIST::FUNCTION:RSA
ECDSA_SIG_get0_r 4491 1_1_1 EXIST::FUNCTION:EC
ECDSA_SIG_get0_s 4492 1_1_1 EXIST::FUNCTION:EC