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DH_SIZE(3) OpenSSL DH_SIZE(3) NAME DH_size, DH_bits, DH_security_bits - get Diffie-Hellman prime size and security bits SYNOPSIS #include <openssl/dh.h> int DH_size(const DH *dh); int DH_bits(const DH *dh); int DH_security_bits(const DH *dh); DESCRIPTION DH_size() returns the Diffie-Hellman prime size in bytes. It can be used to determine how much memory must be allocated for the shared secret computed by DH_compute_key(3). DH_bits() returns the number of significant bits. dh and dh->p must not be NULL. DH_security_bits() returns the number of security bits of the given dh key. See BN_security_bits(3). RETURN VALUES DH_size() returns the prime size of Diffie-Hellman in bytes. DH_bits() returns the number of bits in the key. DH_security_bits() returns the number of security bits. SEE ALSO DH_new(3), DH_generate_key(3), BN_num_bits(3) HISTORY The DH_bits() function was added in OpenSSL 1.1.0. COPYRIGHT Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>. 1.1.1h 2020-09-22 DH_SIZE(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | HISTORY | COPYRIGHT
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