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DH_bits.3
.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" DH_size, DH_bits, DH_security_bits \- get Diffie\-Hellman prime size and security bits .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/dh.h> \& \& int DH_size(const DH *dh); \& \& int DH_bits(const DH *dh); \& \& int DH_security_bits(const DH *dh); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBDH_size()\fR 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 \fBDH_compute_key\fR\|(3). .PP \&\fBDH_bits()\fR returns the number of significant bits. .PP \&\fBdh\fR and \fBdh\->p\fR must not be \fB\s-1NULL\s0\fR. .PP \&\fBDH_security_bits()\fR returns the number of security bits of the given \fBdh\fR key. See \fBBN_security_bits\fR\|(3). .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBDH_size()\fR returns the prime size of Diffie-Hellman in bytes. .PP \&\fBDH_bits()\fR returns the number of bits in the key. .PP \&\fBDH_security_bits()\fR returns the number of security bits. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBDH_new\fR\|(3), \fBDH_generate_key\fR\|(3), \&\fBBN_num_bits\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" The \fBDH_bits()\fR function was added in OpenSSL 1.1.0. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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