BN_SECURITY_BITS(3ssl) OpenSSL BN_SECURITY_BITS(3ssl) BN_security_bits - #include int BN_security_bits(int L, int N); BN_security_bits() . NIST SP800-57. BN_security_bits() : FFC ( ) IFC ( ). FFC DSA DH L N L N . IFC RSA L (). . ECC ( ) BN_security_bits(). . DH_security_bits(3), DSA_security_bits(3), RSA_security_bits(3) BN_security_bits() OpenSSL 1.1.0. 2017-2019 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 BN_SECURITY_BITS(3ssl)