BN_num_bytes(3) — Subroutines

NAME

BN_num_bytes, BN_num_bits, 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.

HISTORY

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

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