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.
MirOS BSD #10-current 2005-02-05 1