1 .\" $NetBSD: RSA_size.3,v 1.14 2015/06/12 17:01:14 christos Exp $
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137 .IX Title "RSA_size 3"
138 .TH RSA_size 3 "2009-07-19" "1.0.1n" "OpenSSL"
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144 RSA_size \- get RSA modulus size
148 .IX Header "SYNOPSIS"
150 \& #include <openssl/rsa.h>
152 \& int RSA_size(const RSA *rsa);
155 .IX Header "DESCRIPTION"
156 This function returns the \s-1RSA\s0 modulus size in bytes. It can be used to
157 determine how much memory must be allocated for an \s-1RSA\s0 encrypted
160 \&\fBrsa\->n\fR must not be \fB\s-1NULL\s0\fR.
162 .IX Header "RETURN VALUE"
165 .IX Header "SEE ALSO"
166 \&\fIopenssl_rsa\fR\|(3)
169 \&\fIRSA_size()\fR is available in all versions of SSLeay and OpenSSL.