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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
       DH_bits() 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>.

1.1.1a				  2018-11-20			    DH_SIZE(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | HISTORY | COPYRIGHT

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