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편집 파일: RSA_size.3

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.\" ========================================================================
.\"
.IX Title "RSA_size 3"
.TH RSA_size 3 "2019-12-20" "1.0.2u" "OpenSSL"
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.SH "NAME"
RSA_size \- get RSA modulus size
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/rsa.h>
\&
\& int RSA_size(const RSA *rsa);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This function returns the \s-1RSA\s0 modulus size in bytes. It can be used to
determine how much memory must be allocated for an \s-1RSA\s0 encrypted
value.
.PP
\&\fBrsa\->n\fR must not be \fB\s-1NULL\s0\fR.
.SH "RETURN VALUE"
.IX Header "RETURN VALUE"
The size in bytes.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBrsa\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\fBRSA_size()\fR is available in all versions of SSLeay and OpenSSL.