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.\" ========================================================================
.\"
.IX Title "SPKAC 1"
.TH SPKAC 1 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
openssl\-spkac,
spkac \- SPKAC printing and generating utility
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl\fR \fBspkac\fR
[\fB\-in filename\fR]
[\fB\-out filename\fR]
[\fB\-key keyfile\fR]
[\fB\-passin arg\fR]
[\fB\-challenge string\fR]
[\fB\-pubkey\fR]
[\fB\-spkac spkacname\fR]
[\fB\-spksect section\fR]
[\fB\-noout\fR]
[\fB\-verify\fR]
[\fB\-engine id\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBspkac\fR command processes Netscape signed public key and challenge
(\s-1SPKAC\s0) files. It can print out their contents, verify the signature and
produce its own SPKACs from a supplied private key.
.SH "COMMAND OPTIONS"
.IX Header "COMMAND OPTIONS"
.IP "\fB\-in filename\fR" 4
.IX Item "-in filename"
This specifies the input filename to read from or standard input if this
option is not specified. Ignored if the \fB\-key\fR option is used.
.IP "\fB\-out filename\fR" 4
.IX Item "-out filename"
specifies the output filename to write to or standard output by
default.
.IP "\fB\-key keyfile\fR" 4
.IX Item "-key keyfile"
create an \s-1SPKAC\s0 file using the private key in \fBkeyfile\fR. The
\&\fB\-in\fR, \fB\-noout\fR, \fB\-spksect\fR and \fB\-verify\fR options are ignored if
present.
.IP "\fB\-passin password\fR" 4
.IX Item "-passin password"
the input file password source. For more information about the format of \fBarg\fR
see the \fB\s-1PASS PHRASE ARGUMENTS\s0\fR section in \fBopenssl\fR\|(1).
.IP "\fB\-challenge string\fR" 4
.IX Item "-challenge string"
specifies the challenge string if an \s-1SPKAC\s0 is being created.
.IP "\fB\-spkac spkacname\fR" 4
.IX Item "-spkac spkacname"
allows an alternative name form the variable containing the
\&\s-1SPKAC.\s0 The default is \*(L"\s-1SPKAC\*(R".\s0 This option affects both
generated and input \s-1SPKAC\s0 files.
.IP "\fB\-spksect section\fR" 4
.IX Item "-spksect section"
allows an alternative name form the section containing the
\&\s-1SPKAC.\s0 The default is the default section.
.IP "\fB\-noout\fR" 4
.IX Item "-noout"
don't output the text version of the \s-1SPKAC\s0 (not used if an
\&\s-1SPKAC\s0 is being created).
.IP "\fB\-pubkey\fR" 4
.IX Item "-pubkey"
output the public key of an \s-1SPKAC\s0 (not used if an \s-1SPKAC\s0 is
being created).
.IP "\fB\-verify\fR" 4
.IX Item "-verify"
verifies the digital signature on the supplied \s-1SPKAC.\s0
.IP "\fB\-engine id\fR" 4
.IX Item "-engine id"
specifying an engine (by its unique \fBid\fR string) will cause \fBspkac\fR
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
Print out the contents of an \s-1SPKAC:\s0
.PP
.Vb 1
\& openssl spkac \-in spkac.cnf
.Ve
.PP
Verify the signature of an \s-1SPKAC:\s0
.PP
.Vb 1
\& openssl spkac \-in spkac.cnf \-noout \-verify
.Ve
.PP
Create an \s-1SPKAC\s0 using the challenge string \*(L"hello\*(R":
.PP
.Vb 1
\& openssl spkac \-key key.pem \-challenge hello \-out spkac.cnf
.Ve
.PP
Example of an \s-1SPKAC,\s0 (long lines split up for clarity):
.PP
.Vb 5
\& SPKAC=MIG5MGUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEA1cCoq2Wa3Ixs47uI7F\e
\& PVwHVIPDx5yso105Y6zpozam135a8R0CpoRvkkigIyXfcCjiVi5oWk+6FfPaD03u\e
\& PFoQIDAQABFgVoZWxsbzANBgkqhkiG9w0BAQQFAANBAFpQtY/FojdwkJh1bEIYuc\e
\& 2EeM2KHTWPEepWYeawvHD0gQ3DngSC75YCWnnDdq+NQ3F+X4deMx9AaEglZtULwV\e
\& 4=
.Ve
.SH "NOTES"
.IX Header "NOTES"
A created \s-1SPKAC\s0 with suitable \s-1DN\s0 components appended can be fed into
the \fBca\fR utility.
.PP
SPKACs are typically generated by Netscape when a form is submitted
containing the \fB\s-1KEYGEN\s0\fR tag as part of the certificate enrollment
process.
.PP
The challenge string permits a primitive form of proof of possession
of private key. By checking the \s-1SPKAC\s0 signature and a random challenge
string some guarantee is given that the user knows the private key
corresponding to the public key being certified. This is important in
some applications. Without this it is possible for a previous \s-1SPKAC\s0
to be used in a \*(L"replay attack\*(R".
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBca\fR\|(1)

Filemanager

Name Type Size Permission Actions
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asn1parse.1 File 9.89 KB 0644
c_rehash.1 File 7.58 KB 0644
ca.1 File 30.03 KB 0644
ciphers.1 File 30.67 KB 0644
cms.1 File 29.01 KB 0644
crl.1 File 7.07 KB 0644
crl2pkcs7.1 File 6.78 KB 0644
dgst.1 File 10.24 KB 0644
dhparam.1 File 8.64 KB 0644
dsa.1 File 9.18 KB 0644
dsaparam.1 File 7.23 KB 0644
dss1.1 File 10.24 KB 0644
ec.1 File 10.27 KB 0644
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enc.1 File 14.93 KB 0644
errstr.1 File 4.69 KB 0644
gendsa.1 File 6.03 KB 0644
genpkey.1 File 14.69 KB 0644
genrsa.1 File 7.57 KB 0644
md2.1 File 10.24 KB 0644
md4.1 File 10.24 KB 0644
md5.1 File 10.24 KB 0644
mdc2.1 File 10.24 KB 0644
nseq.1 File 5.82 KB 0644
ocsp.1 File 19.67 KB 0644
openssl-asn1parse.1 File 9.89 KB 0644
openssl-ca.1 File 30.03 KB 0644
openssl-ciphers.1 File 30.67 KB 0644
openssl-cms.1 File 29.01 KB 0644
openssl-crl.1 File 7.07 KB 0644
openssl-crl2pkcs7.1 File 6.78 KB 0644
openssl-dgst.1 File 10.24 KB 0644
openssl-dhparam.1 File 8.64 KB 0644
openssl-dsa.1 File 9.18 KB 0644
openssl-dsaparam.1 File 7.23 KB 0644
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openssl-ecparam.1 File 9.55 KB 0644
openssl-enc.1 File 14.93 KB 0644
openssl-errstr.1 File 4.69 KB 0644
openssl-gendsa.1 File 6.03 KB 0644
openssl-genpkey.1 File 14.69 KB 0644
openssl-genrsa.1 File 7.57 KB 0644
openssl-nseq.1 File 5.82 KB 0644
openssl-ocsp.1 File 19.67 KB 0644
openssl-passwd.1 File 5.94 KB 0644
openssl-pkcs12.1 File 17.29 KB 0644
openssl-pkcs7.1 File 6.67 KB 0644
openssl-pkcs8.1 File 13.58 KB 0644
openssl-pkey.1 File 7.76 KB 0644
openssl-pkeyparam.1 File 5.64 KB 0644
openssl-pkeyutl.1 File 11.51 KB 0644
openssl-rand.1 File 5.2 KB 0644
openssl-req.1 File 29.18 KB 0644
openssl-rsa.1 File 10.91 KB 0644
openssl-rsautl.1 File 9.75 KB 0644
openssl-s_client.1 File 18.2 KB 0644
openssl-s_server.1 File 18.93 KB 0644
openssl-s_time.1 File 10.52 KB 0644
openssl-sess_id.1 File 8.3 KB 0644
openssl-smime.1 File 20.57 KB 0644
openssl-speed.1 File 4.98 KB 0644
openssl-spkac.1 File 7.92 KB 0644
openssl-ts.1 File 26.18 KB 0644
openssl-tsget.1 File 10.92 KB 0644
openssl-verify.1 File 23.66 KB 0644
openssl-version.1 File 4.92 KB 0644
openssl-x509.1 File 35.46 KB 0644
openssl.1 File 15.68 KB 0644
passwd.1 File 5.94 KB 0644
pkcs12.1 File 17.29 KB 0644
pkcs7.1 File 6.67 KB 0644
pkcs8.1 File 13.58 KB 0644
pkey.1 File 7.76 KB 0644
pkeyparam.1 File 5.64 KB 0644
pkeyutl.1 File 11.51 KB 0644
rand.1 File 5.2 KB 0644
req.1 File 29.18 KB 0644
ripemd160.1 File 10.24 KB 0644
rsa.1 File 10.91 KB 0644
rsautl.1 File 9.75 KB 0644
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s_server.1 File 18.93 KB 0644
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sha.1 File 10.24 KB 0644
sha1.1 File 10.24 KB 0644
sha224.1 File 10.24 KB 0644
sha256.1 File 10.24 KB 0644
sha384.1 File 10.24 KB 0644
sha512.1 File 10.24 KB 0644
smime.1 File 20.57 KB 0644
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tsget.1 File 10.92 KB 0644
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x509.1 File 35.46 KB 0644