1*2175Sjp161948=pod 2*2175Sjp161948 3*2175Sjp161948=head1 NAME 4*2175Sjp161948 5*2175Sjp161948BN_copy, BN_dup - copy BIGNUMs 6*2175Sjp161948 7*2175Sjp161948=head1 SYNOPSIS 8*2175Sjp161948 9*2175Sjp161948 #include <openssl/bn.h> 10*2175Sjp161948 11*2175Sjp161948 BIGNUM *BN_copy(BIGNUM *to, const BIGNUM *from); 12*2175Sjp161948 13*2175Sjp161948 BIGNUM *BN_dup(const BIGNUM *from); 14*2175Sjp161948 15*2175Sjp161948=head1 DESCRIPTION 16*2175Sjp161948 17*2175Sjp161948BN_copy() copies B<from> to B<to>. BN_dup() creates a new B<BIGNUM> 18*2175Sjp161948containing the value B<from>. 19*2175Sjp161948 20*2175Sjp161948=head1 RETURN VALUES 21*2175Sjp161948 22*2175Sjp161948BN_copy() returns B<to> on success, NULL on error. BN_dup() returns 23*2175Sjp161948the new B<BIGNUM>, and NULL on error. The error codes can be obtained 24*2175Sjp161948by L<ERR_get_error(3)|ERR_get_error(3)>. 25*2175Sjp161948 26*2175Sjp161948=head1 SEE ALSO 27*2175Sjp161948 28*2175Sjp161948L<bn(3)|bn(3)>, L<ERR_get_error(3)|ERR_get_error(3)> 29*2175Sjp161948 30*2175Sjp161948=head1 HISTORY 31*2175Sjp161948 32*2175Sjp161948BN_copy() and BN_dup() are available in all versions of SSLeay and OpenSSL. 33*2175Sjp161948 34*2175Sjp161948=cut 35