BN_new(3) OpenSSL BN_new(3)NAME
BN_new, BN_init, BN_clear, BN_free, BN_clear_free -
allocate and free BIGNUMs
SYNOPSIS
#include <openssl/bn.h>
BIGNUM *BN_new(void);
void BN_init(BIGNUM *);
void BN_clear(BIGNUM *a);
void BN_free(BIGNUM *a);
void BN_clear_free(BIGNUM *a);
DESCRIPTIONBN_new() allocated and initializes a BIGNUM structure.
BN_init() initializes an existing uninitialized BIGNUM.
BN_clear() is used to destroy sensitive data such as keys
when they are no longer needed. It erases the memory used
by a and sets it to the value 0.
BN_free() frees the components of the BIGNUM, and if it
was created by BN_new(), also the structure itself.
BN_clear_free() additionally overwrites the data before
the memory is returned to the system.
RETURN VALUESBN_new() returns a pointer to the BIGNUM. If the
allocation fails, it returns NULL and sets an error code
that can be obtained by ERR_get_error(3).
BN_init(), BN_clear(), BN_free() and BN_clear_free() have
no return values.
SEE ALSObn(3), ERR_get_error(3)HISTORYBN_new(), BN_clear(), BN_free() and BN_clear_free() are
available in all versions on SSLeay and OpenSSL.
BN_init() was added in SSLeay 0.9.1b.
25/Sep/2002 0.9.6j BN_new(3)