BN_num_bits

NAME

BN_num_bits, BN_num_bytes, BN_num_bits_word — get BIGNUM size

#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);

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.

The size.

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

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