.TH "PKI \-\-PUB" 1 "2013-07-31" "@PACKAGE_VERSION@" "strongSwan"
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.SH "NAME"
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pki \-\-pub \- Extract a public key from a private key or certificate
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.SH "SYNOPSIS"
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.SY pki\ \-\-pub
.RB [ \-\-in
.IR file | \fB\-\-keyid\fR
.IR hex ]
.OP \-\-type type
.OP \-\-outform encoding
.OP \-\-debug level
.YS
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.SY pki\ \-\-pub
.BI \-\-options\~ file
.YS
.
.SY "pki \-\-pub"
.B \-h
|
.B \-\-help
.YS
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.SH "DESCRIPTION"
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This sub-command of
.BR pki (1)
extracts public keys from a private keys and certificates.
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.SH "OPTIONS"
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.TP
.B "\-h, \-\-help"
Print usage information with a summary of the available options.
.TP
.BI "\-v, \-\-debug " level
Set debug level, default: 1.
.TP
.BI "\-+, \-\-options " file
Read command line options from \fIfile\fR.
.TP
.BI "\-i, \-\-in " file
Input file. If not given the input is read from \fISTDIN\fR.
.TP
.BI "\-t, \-\-type " type
Type of input. One of \fIrsa\fR (RSA private key), \fIecdsa\fR (ECDSA
private key), \fIpub\fR (public key),
\fIpkcs10\fR (PKCS#10 certificate request), or \fIx509\fR (X.509 certificate),
defaults to \fIrsa\fR.
.TP
.BI "\-f, \-\-outform " encoding
Encoding of the extracted public key. One of \fIder\fR (ASN.1 DER), \fIpem\fR
(Base64 PEM), \fIdnskey\fR (RFC 3110 DNS key), or \fIsshkey\fR (RFC 4253 SSH
key), defaults to \fIder\fR.
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.SH "EXAMPLES"
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Extract the public key from an RSA private key:
.PP
.EX
  pki --pub --in key.der > pub.der
.EE
.PP
Extract the public key from an X.509 certificate:
.PP
.EX
  pki --pub --in cert.der --type x509 > pub.der
.EE
.PP
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.SH "SEE ALSO"
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.BR pki (1)