BN_copy 3 2003-07-24 0.9.9-dev OpenSSL

### NAME

BN_copy, BN_dup - copy BIGNUMs

### LIBRARY

libcrypto, -lcrypto

### SYNOPSIS

     #include

     BIGNUM *BN_copy(BIGNUM *to, const BIGNUM *from);

     BIGNUM *BN_dup(const BIGNUM *from);

### DESCRIPTION

BN_copy() copies from to to. BN_dup() creates a new BIGNUM containing the value from.

### RETURN VALUES

BN_copy() returns to on success, NULL on error. BN_dup() returns the new BIGNUM, and NULL on error. The error codes can be obtained by ERR_get_error(3).

### SEE ALSO

openssl_bn(3), ERR_get_error(3)

### HISTORY

BN_copy() and BN_dup() are available in all versions of SSLeay and OpenSSL.