=pod =head1 NAME BN_copy, BN_dup - copy BIGNUMs =head1 SYNOPSIS #include BIGNUM *BN_copy(BIGNUM *to, const BIGNUM *from); BIGNUM *BN_dup(const BIGNUM *from); =head1 DESCRIPTION BN_copy() copies B to B. BN_dup() creates a new B containing the value B. =head1 RETURN VALUES BN_copy() returns B on success, NULL on error. BN_dup() returns the new B, and NULL on error. The error codes can be obtained by L. =head1 SEE ALSO L, L =head1 HISTORY BN_copy() and BN_dup() are available in all versions of SSLeay and OpenSSL. =cut