NetBSD/lib/libcrypto/man/RSA_check_key.3

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.TH RSA_check_key 3 "0.9.5a" "22/Jul/2000" "OpenSSL"
.UC
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.rm #[ #] #H #V #F C
.SH "NAME"
RSA_check_key \- validate private RSA keys
.SH "LIBRARY"
libcrypto, -lcrypto
.SH "SYNOPSIS"
.PP
.Vb 1
\& #include <openssl/rsa.h>
.Ve
.Vb 1
\& int RSA_check_key(RSA *rsa);
.Ve
.SH "DESCRIPTION"
This function validates RSA keys. It checks that \fBp\fR and \fBq\fR are
in fact prime, and that \fBn = p*q\fR.
.PP
It also checks that \fBd*e = 1 mod (p-1*q-1)\fR,
and that \fBdmp1\fR, \fBdmq1\fR and \fBiqmp\fR are set correctly or are \fBNULL\fR.
.PP
The key's public components may not be \fBNULL\fR.
.SH "RETURN VALUE"
\fIRSA_check_key()\fR returns 1 if \fBrsa\fR is a valid RSA key, and 0 otherwise.
\-1 is returned if an error occurs while checking the key.
.PP
If the key is invalid or an error occurred, the reason code can be
obtained using the \fIERR_get_error(3)|ERR_get_error(3)\fR manpage.
.SH "SEE ALSO"
the \fIrsa(3)|rsa(3)\fR manpage, the \fIerr(3)|err(3)\fR manpage
.SH "HISTORY"
\fIRSA_check()\fR appeared in OpenSSL 0.9.4.

.rn }` ''
.IX Title "RSA_check_key 3"
.IX Name "RSA_check_key - validate private RSA keys"

.IX Header "NAME"

.IX Header "SYNOPSIS"

.IX Header "DESCRIPTION"

.IX Header "RETURN VALUE"

.IX Header "SEE ALSO"

.IX Header "HISTORY"