=pod
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=head1 NAME
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d2i_DHparams, i2d_DHparams - PKCS#3 DH parameter functions
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=head1 SYNOPSIS
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#include <openssl/dh.h>
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DH *d2i_DHparams(DH **a, const unsigned char **pp, long length);
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int i2d_DHparams(DH *a, unsigned char **pp);
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=head1 DESCRIPTION
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These functions decode and encode PKCS#3 DH parameters using the
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DHparameter structure described in PKCS#3.
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Otherwise these behave in a similar way to d2i_X509() and i2d_X509()
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described in the L<d2i_X509(3)> manual page.
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=head1 RETURN VALUES
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d2i_DHparams() returns a valid B<DH> structure or NULL if an error occurred.
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i2d_DHparams() returns the length of encoded data on success or a value which
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is less than or equal to 0 on error.
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=head1 SEE ALSO
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L<d2i_X509(3)>
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=head1 COPYRIGHT
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Copyright 2000-2020 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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