BN_NUM_BYTES(3ssl) OpenSSL BN_NUM_BYTES(3ssl) BN_num_bits, BN_num_bytes, BN_num_bits_word - BIGNUM #include int BN_num_bytes(const BIGNUM *a); int BN_num_bits(const BIGNUM *a); int BN_num_bits_word(BN_ULONG w); BN_num_bytes() BIGNUM . BN_num_bits_word() . 0x00000432 11 16 32. floor(log2(w))+1. BN_num_bits() BIGNUM BN_num_bits_word(). BN_num_bytes() . . BN_num_bits() RSA DH DSA ( 512 1024 2048 ...). . " " RSA_size() DH_size() DSA_size() BN_num_bytes() 8 ( " " ). DH_size(3), DSA_size(3), RSA_size(3) 2000-2017 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 BN_NUM_BYTES(3ssl)