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81 lines
2.4 KiB
81 lines
2.4 KiB
.TH sshpk\-sign 1 "Jan 2016" sshpk "sshpk Commands" |
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.SH NAME |
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.PP |
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sshpk\-sign \- sign data using an SSH key |
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.SH SYNOPSYS |
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.PP |
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\fB\fCsshpk\-sign\fR \-i KEYPATH [OPTION...] |
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.SH DESCRIPTION |
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.PP |
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Takes in arbitrary bytes, and signs them using an SSH private key. The key can |
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be of any type or format supported by the \fB\fCsshpk\fR library, including the |
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standard OpenSSH formats, as well as PEM PKCS#1 and PKCS#8. |
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.PP |
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The signature is printed out in Base64 encoding, unless the \fB\fC\-\-binary\fR or \fB\fC\-b\fR |
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option is given. |
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.SH EXAMPLES |
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.PP |
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Signing with default settings: |
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.PP |
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.RS |
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.nf |
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$ printf 'foo' | sshpk\-sign \-i ~/.ssh/id_ecdsa |
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MEUCIAMdLS/vXrrtWFepwe... |
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.fi |
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.RE |
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.PP |
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Signing in SSH (RFC 4253) format (rather than the default ASN.1): |
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.PP |
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.RS |
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.nf |
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$ printf 'foo' | sshpk\-sign \-i ~/.ssh/id_ecdsa \-t ssh |
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AAAAFGVjZHNhLXNoYTIt... |
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.fi |
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.RE |
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.PP |
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Saving the binary signature to a file: |
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.PP |
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.RS |
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.nf |
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$ printf 'foo' | sshpk\-sign \-i ~/.ssh/id_ecdsa \\ |
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\-o signature.bin \-b |
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$ cat signature.bin | base64 |
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MEUCIAMdLS/vXrrtWFepwe... |
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.fi |
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.RE |
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.SH OPTIONS |
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.TP |
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\fB\fC\-v, \-\-verbose\fR |
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Print extra information about the key and signature to stderr when signing. |
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.TP |
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\fB\fC\-b, \-\-binary\fR |
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Don't base64\-encode the signature before outputting it. |
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.TP |
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\fB\fC\-i KEY, \-\-identity=KEY\fR |
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Select the key to be used for signing. \fB\fCKEY\fR must be a relative or absolute |
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filesystem path to the key file. Any format supported by the \fB\fCsshpk\fR library |
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is supported, including OpenSSH formats and standard PEM PKCS. |
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.TP |
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\fB\fC\-f PATH, \-\-file=PATH\fR |
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Input file to sign instead of stdin. |
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.TP |
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\fB\fC\-o PATH, \-\-out=PATH\fR |
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Output file to save signature in instead of stdout. |
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.TP |
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\fB\fC\-H HASH, \-\-hash=HASH\fR |
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Set the hash algorithm to be used for signing. This should be one of \fB\fCsha1\fR, |
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\fB\fCsha256\fR or \fB\fCsha512\fR\&. Some key types may place restrictions on which hash |
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algorithms may be used (e.g. ED25519 keys can only use SHA\-512). |
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.TP |
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\fB\fC\-t FORMAT, \-\-format=FORMAT\fR |
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Choose the signature format to use, from \fB\fCasn1\fR, \fB\fCssh\fR or \fB\fCraw\fR (only for |
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ED25519 signatures). The \fB\fCasn1\fR format is the default, as it is the format |
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used with TLS and typically the standard in most non\-SSH libraries (e.g. |
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OpenSSL). The \fB\fCssh\fR format is used in the SSH protocol and by the ssh\-agent. |
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.SH SEE ALSO |
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.PP |
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.BR sshpk-verify (1) |
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.SH BUGS |
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.PP |
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Report bugs at Github |
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\[la]https://github.com/arekinath/node-sshpk/issues\[ra]
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