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=pod
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=head1 NAME
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2015-04-18 10:23:12 +00:00
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DH_size, DH_bits - get Diffie-Hellman prime size
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2000-01-22 20:05:23 +00:00
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=head1 SYNOPSIS
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2015-04-18 10:23:12 +00:00
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#include <openssl/dh.h>
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2015-04-18 10:23:12 +00:00
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int DH_size(const DH *dh);
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int DH_bits(const DH *dh);
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=head1 DESCRIPTION
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2015-04-18 10:23:12 +00:00
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DH_size() returns the Diffie-Hellman prime size in bytes. It can be used
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to determine how much memory must be allocated for the shared secret
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computed by DH_compute_key().
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2015-04-18 10:23:12 +00:00
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DH_bits() returns the number of significant bits.
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B<dh> and B<dh-E<gt>p> must not be B<NULL>.
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2000-01-22 20:05:23 +00:00
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=head1 RETURN VALUE
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2015-04-18 10:23:12 +00:00
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The size.
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2000-01-22 20:05:23 +00:00
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=head1 SEE ALSO
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2015-08-17 19:21:33 +00:00
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L<dh(3)>, L<DH_generate_key(3)>,
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L<BN_num_bits(3)>
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2000-01-22 20:05:23 +00:00
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=head1 HISTORY
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2015-04-18 10:23:12 +00:00
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DH_bits() was added in OpenSSL 1.1.0.
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2000-01-22 20:05:23 +00:00
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2016-05-18 15:44:05 +00:00
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=head1 COPYRIGHT
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Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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