1 .\" $NetBSD: libcrypto.pl,v 1.3 2007/11/27 22:16:03 christos Exp $
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136 .IX Title "DH_size 3"
137 .TH DH_size 3 "2000-02-24" "1.1.0-dev" "OpenSSL"
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143 DH_size \- get Diffie\-Hellman prime size
147 .IX Header "SYNOPSIS"
149 \& #include <openssl/dh.h>
151 \& int DH_size(DH *dh);
154 .IX Header "DESCRIPTION"
155 This function returns the Diffie-Hellman size in bytes. It can be used
156 to determine how much memory must be allocated for the shared secret
157 computed by \fIDH_compute_key()\fR.
159 \&\fBdh\->p\fR must not be \fB\s-1NULL\s0\fR.
161 .IX Header "RETURN VALUE"
164 .IX Header "SEE ALSO"
165 \&\fIopenssl_dh\fR\|(3), \fIDH_generate_key\fR\|(3)
168 \&\fIDH_size()\fR is available in all versions of SSLeay and OpenSSL.