HP OpenVMS Systems Documentation

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HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS > CRYPTO Application Programming Interface (API) Reference

BN_num_bits

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NAME

BN_num_bits, BN_num_bytes, BN_num_bits_word — get BIGNUM size

Synopsis

#include <openssl/bn.h> 
int BN_num_bytes(const BIGNUM *a);
int BN_num_bits(const BIGNUM *a);
int BN_num_bits_word(BN_ULONG w);

DESCRIPTION

These functions return the size of a BIGNUM in bytes or bits, and the size of an unsigned integer in bits.

BN_num_bytes() is a macro.

RETURN VALUES

The size.

SEE ALSO

bn(3)

HISTORY

BN_num_bytes(), BN_num_bits() and BN_num_bits_word() are available in all versions of SSLeay and OpenSSL.