You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.9 KiB
Groff
136 lines
3.9 KiB
Groff
.TH sshpk\-conv 1 "Jan 2016" sshpk "sshpk Commands"
|
|
.SH NAME
|
|
.PP
|
|
sshpk\-conv \- convert between key formats
|
|
.SH SYNOPSYS
|
|
.PP
|
|
\fB\fCsshpk\-conv\fR \-t FORMAT [FILENAME] [OPTIONS...]
|
|
.PP
|
|
\fB\fCsshpk\-conv\fR \-i [FILENAME] [OPTIONS...]
|
|
.SH DESCRIPTION
|
|
.PP
|
|
Reads in a public or private key and converts it between different formats,
|
|
particularly formats used in the SSH protocol and the well\-known PEM PKCS#1/7
|
|
formats.
|
|
.PP
|
|
In the second form, with the \fB\fC\-i\fR option given, identifies a key and prints to
|
|
stderr information about its nature, size and fingerprint.
|
|
.SH EXAMPLES
|
|
.PP
|
|
Assume the following SSH\-format public key in \fB\fCid_ecdsa.pub\fR:
|
|
.PP
|
|
.RS
|
|
.nf
|
|
ecdsa\-sha2\-nistp256 AAAAE2VjZHNhLXNoYTI...9M/4c4= user@host
|
|
.fi
|
|
.RE
|
|
.PP
|
|
Identify it with \fB\fC\-i\fR:
|
|
.PP
|
|
.RS
|
|
.nf
|
|
$ sshpk\-conv \-i id_ecdsa.pub
|
|
id_ecdsa: a 256 bit ECDSA public key
|
|
ECDSA curve: nistp256
|
|
Comment: user@host
|
|
Fingerprint:
|
|
SHA256:vCNX7eUkdvqqW0m4PoxQAZRv+CM4P4fS8+CbliAvS4k
|
|
81:ad:d5:57:e5:6f:7d:a2:93:79:56:af:d7:c0:38:51
|
|
.fi
|
|
.RE
|
|
.PP
|
|
Convert it to \fB\fCpkcs8\fR format, for use with e.g. OpenSSL:
|
|
.PP
|
|
.RS
|
|
.nf
|
|
$ sshpk\-conv \-t pkcs8 id_ecdsa
|
|
\-\-\-\-\-BEGIN PUBLIC KEY\-\-\-\-\-
|
|
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEAsA4R6N6AS3gzaPBeLjG2ObSgUsR
|
|
zOt+kWJoijLnw3ZMYUKmAx+lD0I5XUxdrPcs1vH5f3cn9TvRvO9L0z/hzg==
|
|
\-\-\-\-\-END PUBLIC KEY\-\-\-\-\-
|
|
.fi
|
|
.RE
|
|
.PP
|
|
Retrieve the public half of a private key:
|
|
.PP
|
|
.RS
|
|
.nf
|
|
$ openssl genrsa 2048 | sshpk\-conv \-t ssh \-c foo@bar
|
|
ssh\-rsa AAAAB3NzaC1yc2EAAA...koK7 foo@bar
|
|
.fi
|
|
.RE
|
|
.PP
|
|
Convert a private key to PKCS#1 (OpenSSL) format from a new\-style OpenSSH key
|
|
format (the \fB\fCssh\-keygen \-o\fR format):
|
|
.PP
|
|
.RS
|
|
.nf
|
|
$ ssh\-keygen \-o \-f foobar
|
|
\&...
|
|
$ sshpk\-conv \-p \-t pkcs1 foobar
|
|
\-\-\-\-\-BEGIN RSA PRIVATE KEY\-\-\-\-\-
|
|
MIIDpAIBAAKCAQEA6T/GYJndb1TRH3+NL....
|
|
\-\-\-\-\-END RSA PRIVATE KEY\-\-\-\-\-
|
|
.fi
|
|
.RE
|
|
.SH OPTIONS
|
|
.TP
|
|
\fB\fC\-i, \-\-identify\fR
|
|
Instead of converting the key, output identifying information about it to
|
|
stderr, including its type, size and fingerprints.
|
|
.TP
|
|
\fB\fC\-p, \-\-private\fR
|
|
Treat the key as a private key instead of a public key (the default). If you
|
|
supply \fB\fCsshpk\-conv\fR with a private key and do not give this option, it will
|
|
extract only the public half of the key from it and work with that.
|
|
.TP
|
|
\fB\fC\-f PATH, \-\-file=PATH\fR
|
|
Input file to take the key from instead of stdin. If a filename is supplied
|
|
as a positional argument, it is equivalent to using this option.
|
|
.TP
|
|
\fB\fC\-o PATH, \-\-out=PATH\fR
|
|
Output file name to use instead of stdout.
|
|
.PP
|
|
\fB\fC\-T FORMAT, \-\-informat=FORMAT\fR
|
|
.TP
|
|
\fB\fC\-t FORMAT, \-\-outformat=FORMAT\fR
|
|
Selects the input and output formats to be used (see FORMATS, below).
|
|
.TP
|
|
\fB\fC\-c TEXT, \-\-comment=TEXT\fR
|
|
Sets the key comment for the output file, if supported.
|
|
.SH FORMATS
|
|
.PP
|
|
Currently supported formats:
|
|
.TP
|
|
\fB\fCpem, pkcs1\fR
|
|
The standard PEM format used by older OpenSSH and most TLS libraries such as
|
|
OpenSSL. The classic \fB\fCid_rsa\fR file is usually in this format. It is an ASN.1
|
|
encoded structure, base64\-encoded and placed between PEM headers.
|
|
.TP
|
|
\fB\fCssh\fR
|
|
The SSH public key text format (the format of an \fB\fCid_rsa.pub\fR file). A single
|
|
line, containing 3 space separated parts: the key type, key body and optional
|
|
key comment.
|
|
.TP
|
|
\fB\fCpkcs8\fR
|
|
A newer PEM format, usually used only for public keys by TLS libraries such
|
|
as OpenSSL. The ASN.1 structure is more generic than that of \fB\fCpkcs1\fR\&.
|
|
.TP
|
|
\fB\fCopenssh\fR
|
|
The new \fB\fCssh\-keygen \-o\fR format from OpenSSH. This can be mistaken for a PEM
|
|
encoding but is actually an OpenSSH internal format.
|
|
.TP
|
|
\fB\fCrfc4253\fR
|
|
The internal binary format of keys when sent over the wire in the SSH
|
|
protocol. This is also the format that the \fB\fCssh\-agent\fR uses in its protocol.
|
|
.SH SEE ALSO
|
|
.PP
|
|
.BR ssh-keygen (1),
|
|
.BR openssl (1)
|
|
.SH BUGS
|
|
.PP
|
|
Encrypted (password\-protected) keys are not supported.
|
|
.PP
|
|
Report bugs at Github
|
|
\[la]https://github.com/arekinath/node-sshpk/issues\[ra]
|