1=pod 2 3=head1 NAME 4 5DSA_SIG_get0, DSA_SIG_set0, 6DSA_SIG_new, DSA_SIG_free - allocate and free DSA signature objects 7 8=head1 SYNOPSIS 9 10 #include <openssl/dsa.h> 11 12 DSA_SIG *DSA_SIG_new(void); 13 void DSA_SIG_free(DSA_SIG *a); 14 void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps); 15 int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s); 16 17=head1 DESCRIPTION 18 19DSA_SIG_new() allocates an empty B<DSA_SIG> structure. 20 21DSA_SIG_free() frees the B<DSA_SIG> structure and its components. The 22values are erased before the memory is returned to the system. 23 24DSA_SIG_get0() returns internal pointers to the B<r> and B<s> values contained 25in B<sig>. 26 27The B<r> and B<s> values can be set by calling DSA_SIG_set0() and passing the 28new values for B<r> and B<s> as parameters to the function. Calling this 29function transfers the memory management of the values to the DSA_SIG object, 30and therefore the values that have been passed in should not be freed directly 31after this function has been called. 32 33=head1 RETURN VALUES 34 35If the allocation fails, DSA_SIG_new() returns B<NULL> and sets an 36error code that can be obtained by 37L<ERR_get_error(3)>. Otherwise it returns a pointer 38to the newly allocated structure. 39 40DSA_SIG_free() returns no value. 41 42DSA_SIG_set0() returns 1 on success or 0 on failure. 43 44=head1 SEE ALSO 45 46L<DSA_new(3)>, L<ERR_get_error(3)>, 47L<DSA_do_sign(3)> 48 49=head1 COPYRIGHT 50 51Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. 52 53Licensed under the OpenSSL license (the "License"). You may not use 54this file except in compliance with the License. You can obtain a copy 55in the file LICENSE in the source distribution or at 56L<https://www.openssl.org/source/license.html>. 57 58=cut 59