NAME
DSA_SIG_new,
DSA_SIG_free, DSA_SIG_get0,
DSA_SIG_set0 —
manipulate DSA signature
objects
SYNOPSIS
#include
<openssl/dsa.h>
DSA_SIG *
DSA_SIG_new(void);
void
DSA_SIG_free(DSA_SIG *sig);
void
DSA_SIG_get0(const DSA_SIG *sig,
const BIGNUM **r, const BIGNUM
**s);
int
DSA_SIG_set0(DSA_SIG *sig,
BIGNUM *r, BIGNUM *s);
DESCRIPTION
DSA_SIG_new()
allocates an empty DSA_SIG structure.
DSA_SIG_free()
frees the DSA_SIG structure and its components. The
values are erased before the memory is returned to the system. If
sig is a NULL pointer, no
action occurs.
DSA_SIG_get0()
retrieves internal pointers to the r and
s values contained in sig.
The r and
s values can be set by calling
DSA_SIG_set0().
Calling this function transfers the memory management of the values to
sig, and therefore they should not be freed by the
caller.
RETURN VALUES
If the allocation fails, DSA_SIG_new()
returns NULL and sets an error code that can be
obtained by
ERR_get_error(3). Otherwise it returns a pointer to the newly
allocated structure.
DSA_SIG_set0() returns 1 on success or 0
on failure.
SEE ALSO
HISTORY
DSA_SIG_new() and
DSA_SIG_free() first appeared in OpenSSL 0.9.3 and
have been available since OpenBSD 2.6.
DSA_SIG_get0() and
DSA_SIG_set0() first appeared in OpenSSL 1.1.0 and
have been available since OpenBSD 6.3.