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				| sshpk
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| =========
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| 
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| Parse, convert, fingerprint and use SSH keys (both public and private) in pure
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| node -- no `ssh-keygen` or other external dependencies.
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| 
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| Supports RSA, DSA, ECDSA (nistp-\*) and ED25519 key types, in PEM (PKCS#1, 
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| PKCS#8) and OpenSSH formats.
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| 
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| This library has been extracted from
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| [`node-http-signature`](https://github.com/joyent/node-http-signature)
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| (work by [Mark Cavage](https://github.com/mcavage) and
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| [Dave Eddy](https://github.com/bahamas10)) and
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| [`node-ssh-fingerprint`](https://github.com/bahamas10/node-ssh-fingerprint)
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| (work by Dave Eddy), with additions (including ECDSA support) by
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| [Alex Wilson](https://github.com/arekinath).
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| 
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| Install
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| -------
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| 
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| ```
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| npm install sshpk
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| ```
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| 
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| Examples
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| --------
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| 
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| ```js
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| var sshpk = require('sshpk');
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| 
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| var fs = require('fs');
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| 
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| /* Read in an OpenSSH-format public key */
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| var keyPub = fs.readFileSync('id_rsa.pub');
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| var key = sshpk.parseKey(keyPub, 'ssh');
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| 
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| /* Get metadata about the key */
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| console.log('type => %s', key.type);
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| console.log('size => %d bits', key.size);
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| console.log('comment => %s', key.comment);
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| 
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| /* Compute key fingerprints, in new OpenSSH (>6.7) format, and old MD5 */
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| console.log('fingerprint => %s', key.fingerprint().toString());
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| console.log('old-style fingerprint => %s', key.fingerprint('md5').toString());
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| ```
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| 
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| Example output:
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| 
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| ```
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| type => rsa
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| size => 2048 bits
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| comment => foo@foo.com
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| fingerprint => SHA256:PYC9kPVC6J873CSIbfp0LwYeczP/W4ffObNCuDJ1u5w
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| old-style fingerprint => a0:c8:ad:6c:32:9a:32:fa:59:cc:a9:8c:0a:0d:6e:bd
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| ```
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| 
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| More examples: converting between formats:
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| 
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| ```js
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| /* Read in a PEM public key */
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| var keyPem = fs.readFileSync('id_rsa.pem');
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| var key = sshpk.parseKey(keyPem, 'pem');
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| 
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| /* Convert to PEM PKCS#8 public key format */
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| var pemBuf = key.toBuffer('pkcs8');
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| 
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| /* Convert to SSH public key format (and return as a string) */
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| var sshKey = key.toString('ssh');
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| ```
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| 
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| Signing and verifying:
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| 
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| ```js
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| /* Read in an OpenSSH/PEM *private* key */
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| var keyPriv = fs.readFileSync('id_ecdsa');
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| var key = sshpk.parsePrivateKey(keyPriv, 'pem');
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| 
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| var data = 'some data';
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| 
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| /* Sign some data with the key */
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| var s = key.createSign('sha1');
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| s.update(data);
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| var signature = s.sign();
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| 
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| /* Now load the public key (could also use just key.toPublic()) */
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| var keyPub = fs.readFileSync('id_ecdsa.pub');
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| key = sshpk.parseKey(keyPub, 'ssh');
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| 
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| /* Make a crypto.Verifier with this key */
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| var v = key.createVerify('sha1');
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| v.update(data);
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| var valid = v.verify(signature);
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| /* => true! */
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| ```
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| 
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| Matching fingerprints with keys:
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| 
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| ```js
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| var fp = sshpk.parseFingerprint('SHA256:PYC9kPVC6J873CSIbfp0LwYeczP/W4ffObNCuDJ1u5w');
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| 
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| var keys = [sshpk.parseKey(...), sshpk.parseKey(...), ...];
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| 
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| keys.forEach(function (key) {
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| 	if (fp.matches(key))
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| 		console.log('found it!');
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| });
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| ```
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| 
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| Usage
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| -----
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| 
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| ## Public keys
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| 
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| ### `parseKey(data[, format = 'auto'[, options]])`
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| 
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| Parses a key from a given data format and returns a new `Key` object.
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| 
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| Parameters
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| 
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| - `data` -- Either a Buffer or String, containing the key
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| - `format` -- String name of format to use, valid options are:
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|   - `auto`: choose automatically from all below
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|   - `pem`: supports both PKCS#1 and PKCS#8
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|   - `ssh`: standard OpenSSH format,
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|   - `pkcs1`, `pkcs8`: variants of `pem`
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|   - `rfc4253`: raw OpenSSH wire format
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|   - `openssh`: new post-OpenSSH 6.5 internal format, produced by 
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|                `ssh-keygen -o`
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|   - `dnssec`: `.key` file format output by `dnssec-keygen` etc
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|   - `putty`: the PuTTY `.ppk` file format (supports truncated variant without
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|              all the lines from `Private-Lines:` onwards)
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| - `options` -- Optional Object, extra options, with keys:
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|   - `filename` -- Optional String, name for the key being parsed 
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|                   (eg. the filename that was opened). Used to generate
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|                   Error messages
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|   - `passphrase` -- Optional String, encryption passphrase used to decrypt an
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|                     encrypted PEM file
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| 
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| ### `Key.isKey(obj)`
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| 
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| Returns `true` if the given object is a valid `Key` object created by a version
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| of `sshpk` compatible with this one.
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| 
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| Parameters
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| 
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| - `obj` -- Object to identify
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| 
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| ### `Key#type`
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| 
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| String, the type of key. Valid options are `rsa`, `dsa`, `ecdsa`.
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| 
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| ### `Key#size`
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| 
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| Integer, "size" of the key in bits. For RSA/DSA this is the size of the modulus;
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| for ECDSA this is the bit size of the curve in use.
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| 
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| ### `Key#comment`
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| 
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| Optional string, a key comment used by some formats (eg the `ssh` format).
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| 
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| ### `Key#curve`
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| 
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| Only present if `this.type === 'ecdsa'`, string containing the name of the
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| named curve used with this key. Possible values include `nistp256`, `nistp384`
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| and `nistp521`.
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| 
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| ### `Key#toBuffer([format = 'ssh'])`
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| 
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| Convert the key into a given data format and return the serialized key as
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| a Buffer.
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| 
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| Parameters
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| 
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| - `format` -- String name of format to use, for valid options see `parseKey()`
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| 
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| ### `Key#toString([format = 'ssh])`
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| 
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| Same as `this.toBuffer(format).toString()`.
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| 
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| ### `Key#fingerprint([algorithm = 'sha256'[, hashType = 'ssh']])`
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| 
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| Creates a new `Fingerprint` object representing this Key's fingerprint.
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| 
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| Parameters
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| 
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| - `algorithm` -- String name of hash algorithm to use, valid options are `md5`,
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|                  `sha1`, `sha256`, `sha384`, `sha512`
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| - `hashType` -- String name of fingerprint hash type to use, valid options are
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|                 `ssh` (the type of fingerprint used by OpenSSH, e.g. in
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|                 `ssh-keygen`), `spki` (used by HPKP, some OpenSSL applications)
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| 
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| ### `Key#createVerify([hashAlgorithm])`
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| 
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| Creates a `crypto.Verifier` specialized to use this Key (and the correct public
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| key algorithm to match it). The returned Verifier has the same API as a regular
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| one, except that the `verify()` function takes only the target signature as an
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| argument.
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| 
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| Parameters
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| 
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| - `hashAlgorithm` -- optional String name of hash algorithm to use, any
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|                      supported by OpenSSL are valid, usually including
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|                      `sha1`, `sha256`.
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| 
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| `v.verify(signature[, format])` Parameters
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| 
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| - `signature` -- either a Signature object, or a Buffer or String
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| - `format` -- optional String, name of format to interpret given String with.
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|               Not valid if `signature` is a Signature or Buffer.
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| 
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| ### `Key#createDiffieHellman()`
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| ### `Key#createDH()`
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| 
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| Creates a Diffie-Hellman key exchange object initialized with this key and all
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| necessary parameters. This has the same API as a `crypto.DiffieHellman`
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| instance, except that functions take `Key` and `PrivateKey` objects as
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| arguments, and return them where indicated for.
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| 
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| This is only valid for keys belonging to a cryptosystem that supports DHE
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| or a close analogue (i.e. `dsa`, `ecdsa` and `curve25519` keys). An attempt
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| to call this function on other keys will yield an `Error`.
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| 
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| ## Private keys
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| 
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| ### `parsePrivateKey(data[, format = 'auto'[, options]])`
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| 
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| Parses a private key from a given data format and returns a new
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| `PrivateKey` object.
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| 
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| Parameters
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| 
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| - `data` -- Either a Buffer or String, containing the key
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| - `format` -- String name of format to use, valid options are:
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|   - `auto`: choose automatically from all below
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|   - `pem`: supports both PKCS#1 and PKCS#8
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|   - `ssh`, `openssh`: new post-OpenSSH 6.5 internal format, produced by
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|                       `ssh-keygen -o`
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|   - `pkcs1`, `pkcs8`: variants of `pem`
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|   - `rfc4253`: raw OpenSSH wire format
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|   - `dnssec`: `.private` format output by `dnssec-keygen` etc.
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| - `options` -- Optional Object, extra options, with keys:
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|   - `filename` -- Optional String, name for the key being parsed
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|                   (eg. the filename that was opened). Used to generate
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|                   Error messages
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|   - `passphrase` -- Optional String, encryption passphrase used to decrypt an
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|                     encrypted PEM file
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| 
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| ### `generatePrivateKey(type[, options])`
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| 
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| Generates a new private key of a certain key type, from random data.
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| 
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| Parameters
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| 
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| - `type` -- String, type of key to generate. Currently supported are `'ecdsa'`
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|             and `'ed25519'`
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| - `options` -- optional Object, with keys:
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|   - `curve` -- optional String, for `'ecdsa'` keys, specifies the curve to use.
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|                If ECDSA is specified and this option is not given, defaults to
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|                using `'nistp256'`.
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| 
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| ### `PrivateKey.isPrivateKey(obj)`
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| 
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| Returns `true` if the given object is a valid `PrivateKey` object created by a
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| version of `sshpk` compatible with this one.
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| 
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| Parameters
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| 
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| - `obj` -- Object to identify
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| 
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| ### `PrivateKey#type`
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| 
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| String, the type of key. Valid options are `rsa`, `dsa`, `ecdsa`.
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| 
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| ### `PrivateKey#size`
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| 
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| Integer, "size" of the key in bits. For RSA/DSA this is the size of the modulus;
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| for ECDSA this is the bit size of the curve in use.
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| 
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| ### `PrivateKey#curve`
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| 
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| Only present if `this.type === 'ecdsa'`, string containing the name of the
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| named curve used with this key. Possible values include `nistp256`, `nistp384`
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| and `nistp521`.
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| 
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| ### `PrivateKey#toBuffer([format = 'pkcs1'])`
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| 
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| Convert the key into a given data format and return the serialized key as
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| a Buffer.
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| 
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| Parameters
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| 
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| - `format` -- String name of format to use, valid options are listed under 
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|               `parsePrivateKey`. Note that ED25519 keys default to `openssh`
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|               format instead (as they have no `pkcs1` representation).
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| 
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| ### `PrivateKey#toString([format = 'pkcs1'])`
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| 
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| Same as `this.toBuffer(format).toString()`.
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| 
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| ### `PrivateKey#toPublic()`
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| 
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| Extract just the public part of this private key, and return it as a `Key`
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| object.
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| 
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| ### `PrivateKey#fingerprint([algorithm = 'sha256'])`
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| 
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| Same as `this.toPublic().fingerprint()`.
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| 
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| ### `PrivateKey#createVerify([hashAlgorithm])`
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| 
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| Same as `this.toPublic().createVerify()`.
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| 
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| ### `PrivateKey#createSign([hashAlgorithm])`
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| 
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| Creates a `crypto.Sign` specialized to use this PrivateKey (and the correct
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| key algorithm to match it). The returned Signer has the same API as a regular
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| one, except that the `sign()` function takes no arguments, and returns a
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| `Signature` object.
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| 
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| Parameters
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| 
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| - `hashAlgorithm` -- optional String name of hash algorithm to use, any
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|                      supported by OpenSSL are valid, usually including
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|                      `sha1`, `sha256`.
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| 
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| `v.sign()` Parameters
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| 
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| - none
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| 
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| ### `PrivateKey#derive(newType)`
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| 
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| Derives a related key of type `newType` from this key. Currently this is
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| only supported to change between `ed25519` and `curve25519` keys which are
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| stored with the same private key (but usually distinct public keys in order
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| to avoid degenerate keys that lead to a weak Diffie-Hellman exchange).
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| 
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| Parameters
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| 
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| - `newType` -- String, type of key to derive, either `ed25519` or `curve25519`
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| 
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| ## Fingerprints
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| 
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| ### `parseFingerprint(fingerprint[, options])`
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| 
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| Pre-parses a fingerprint, creating a `Fingerprint` object that can be used to
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| quickly locate a key by using the `Fingerprint#matches` function.
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| 
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| Parameters
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| 
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| - `fingerprint` -- String, the fingerprint value, in any supported format
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| - `options` -- Optional Object, with properties:
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|   - `algorithms` -- Array of strings, names of hash algorithms to limit
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|                 support to. If `fingerprint` uses a hash algorithm not on
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|                 this list, throws `InvalidAlgorithmError`.
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|   - `hashType` -- String, the type of hash the fingerprint uses, either `ssh`
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|                   or `spki` (normally auto-detected based on the format, but
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|                   can be overridden)
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|   - `type` -- String, the entity this fingerprint identifies, either `key` or
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|               `certificate`
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| 
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| ### `Fingerprint.isFingerprint(obj)`
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| 
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| Returns `true` if the given object is a valid `Fingerprint` object created by a
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| version of `sshpk` compatible with this one.
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| 
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| Parameters
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| 
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| - `obj` -- Object to identify
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| 
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| ### `Fingerprint#toString([format])`
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| 
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| Returns a fingerprint as a string, in the given format.
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| 
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| Parameters
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| 
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| - `format` -- Optional String, format to use, valid options are `hex` and
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|               `base64`. If this `Fingerprint` uses the `md5` algorithm, the
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|               default format is `hex`. Otherwise, the default is `base64`.
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| 
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| ### `Fingerprint#matches(keyOrCertificate)`
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| 
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| Verifies whether or not this `Fingerprint` matches a given `Key` or
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| `Certificate`. This function uses double-hashing to avoid leaking timing
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| information. Returns a boolean.
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| 
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| Note that a `Key`-type Fingerprint will always return `false` if asked to match
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| a `Certificate` and vice versa.
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| 
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| Parameters
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| 
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| - `keyOrCertificate` -- a `Key` object or `Certificate` object, the entity to
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|                         match this fingerprint against
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| 
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| ## Signatures
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| 
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| ### `parseSignature(signature, algorithm, format)`
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| 
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| Parses a signature in a given format, creating a `Signature` object. Useful
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| for converting between the SSH and ASN.1 (PKCS/OpenSSL) signature formats, and
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| also returned as output from `PrivateKey#createSign().sign()`.
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| 
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| A Signature object can also be passed to a verifier produced by
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| `Key#createVerify()` and it will automatically be converted internally into the
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| correct format for verification.
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| 
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| Parameters
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| 
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| - `signature` -- a Buffer (binary) or String (base64), data of the actual
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|                  signature in the given format
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| - `algorithm` -- a String, name of the algorithm to be used, possible values
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|                  are `rsa`, `dsa`, `ecdsa`
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| - `format` -- a String, either `asn1` or `ssh`
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| 
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| ### `Signature.isSignature(obj)`
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| 
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| Returns `true` if the given object is a valid `Signature` object created by a
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| version of `sshpk` compatible with this one.
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| 
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| Parameters
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| 
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| - `obj` -- Object to identify
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| 
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| ### `Signature#toBuffer([format = 'asn1'])`
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| 
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| Converts a Signature to the given format and returns it as a Buffer.
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| 
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| Parameters
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| 
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| - `format` -- a String, either `asn1` or `ssh`
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| 
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| ### `Signature#toString([format = 'asn1'])`
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| 
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| Same as `this.toBuffer(format).toString('base64')`.
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| 
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| ## Certificates
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| 
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| `sshpk` includes basic support for parsing certificates in X.509 (PEM) format
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| and the OpenSSH certificate format. This feature is intended to be used mainly
 | |
| to access basic metadata about certificates, extract public keys from them, and
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| also to generate simple self-signed certificates from an existing key.
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| 
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| Notably, there is no implementation of CA chain-of-trust verification, and only
 | |
| very minimal support for key usage restrictions. Please do the security world
 | |
| a favour, and DO NOT use this code for certificate verification in the
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| traditional X.509 CA chain style.
 | |
| 
 | |
| ### `parseCertificate(data, format)`
 | |
| 
 | |
| Parameters
 | |
| 
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|  - `data` -- a Buffer or String
 | |
|  - `format` -- a String, format to use, one of `'openssh'`, `'pem'` (X.509 in a
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|                PEM wrapper), or `'x509'` (raw DER encoded)
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| 
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| ### `createSelfSignedCertificate(subject, privateKey[, options])`
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| 
 | |
| Parameters
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| 
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|  - `subject` -- an Identity, the subject of the certificate
 | |
|  - `privateKey` -- a PrivateKey, the key of the subject: will be used both to be
 | |
|                    placed in the certificate and also to sign it (since this is
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|                    a self-signed certificate)
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|  - `options` -- optional Object, with keys:
 | |
|    - `lifetime` -- optional Number, lifetime of the certificate from now in
 | |
|                    seconds
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|    - `validFrom`, `validUntil` -- optional Dates, beginning and end of
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|                                   certificate validity period. If given
 | |
|                                   `lifetime` will be ignored
 | |
|    - `serial` -- optional Buffer, the serial number of the certificate
 | |
|    - `purposes` -- optional Array of String, X.509 key usage restrictions
 | |
| 
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| ### `createCertificate(subject, key, issuer, issuerKey[, options])`
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `subject` -- an Identity, the subject of the certificate
 | |
|  - `key` -- a Key, the public key of the subject
 | |
|  - `issuer` -- an Identity, the issuer of the certificate who will sign it
 | |
|  - `issuerKey` -- a PrivateKey, the issuer's private key for signing
 | |
|  - `options` -- optional Object, with keys:
 | |
|    - `lifetime` -- optional Number, lifetime of the certificate from now in
 | |
|                    seconds
 | |
|    - `validFrom`, `validUntil` -- optional Dates, beginning and end of
 | |
|                                   certificate validity period. If given
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|                                   `lifetime` will be ignored
 | |
|    - `serial` -- optional Buffer, the serial number of the certificate
 | |
|    - `purposes` -- optional Array of String, X.509 key usage restrictions
 | |
| 
 | |
| ### `Certificate#subjects`
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| 
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| Array of `Identity` instances describing the subject of this certificate.
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| 
 | |
| ### `Certificate#issuer`
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| 
 | |
| The `Identity` of the Certificate's issuer (signer).
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| 
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| ### `Certificate#subjectKey`
 | |
| 
 | |
| The public key of the subject of the certificate, as a `Key` instance.
 | |
| 
 | |
| ### `Certificate#issuerKey`
 | |
| 
 | |
| The public key of the signing issuer of this certificate, as a `Key` instance.
 | |
| May be `undefined` if the issuer's key is unknown (e.g. on an X509 certificate).
 | |
| 
 | |
| ### `Certificate#serial`
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| 
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| The serial number of the certificate. As this is normally a 64-bit or wider
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| integer, it is returned as a Buffer.
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| 
 | |
| ### `Certificate#purposes`
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| 
 | |
| Array of Strings indicating the X.509 key usage purposes that this certificate
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| is valid for. The possible strings at the moment are:
 | |
| 
 | |
|  * `'signature'` -- key can be used for digital signatures
 | |
|  * `'identity'` -- key can be used to attest about the identity of the signer
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|                    (X.509 calls this `nonRepudiation`)
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|  * `'codeSigning'` -- key can be used to sign executable code
 | |
|  * `'keyEncryption'` -- key can be used to encrypt other keys
 | |
|  * `'encryption'` -- key can be used to encrypt data (only applies for RSA)
 | |
|  * `'keyAgreement'` -- key can be used for key exchange protocols such as
 | |
|                        Diffie-Hellman
 | |
|  * `'ca'` -- key can be used to sign other certificates (is a Certificate
 | |
|              Authority)
 | |
|  * `'crl'` -- key can be used to sign Certificate Revocation Lists (CRLs)
 | |
| 
 | |
| ### `Certificate#getExtension(nameOrOid)`
 | |
| 
 | |
| Retrieves information about a certificate extension, if present, or returns
 | |
| `undefined` if not. The string argument `nameOrOid` should be either the OID
 | |
| (for X509 extensions) or the name (for OpenSSH extensions) of the extension
 | |
| to retrieve.
 | |
| 
 | |
| The object returned will have the following properties:
 | |
| 
 | |
|  * `format` -- String, set to either `'x509'` or `'openssh'`
 | |
|  * `name` or `oid` -- String, only one set based on value of `format`
 | |
|  * `data` -- Buffer, the raw data inside the extension
 | |
| 
 | |
| ### `Certificate#getExtensions()`
 | |
| 
 | |
| Returns an Array of all present certificate extensions, in the same manner and
 | |
| format as `getExtension()`.
 | |
| 
 | |
| ### `Certificate#isExpired([when])`
 | |
| 
 | |
| Tests whether the Certificate is currently expired (i.e. the `validFrom` and
 | |
| `validUntil` dates specify a range of time that does not include the current
 | |
| time).
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `when` -- optional Date, if specified, tests whether the Certificate was or
 | |
|              will be expired at the specified time instead of now
 | |
| 
 | |
| Returns a Boolean.
 | |
| 
 | |
| ### `Certificate#isSignedByKey(key)`
 | |
| 
 | |
| Tests whether the Certificate was validly signed by the given (public) Key.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `key` -- a Key instance
 | |
| 
 | |
| Returns a Boolean.
 | |
| 
 | |
| ### `Certificate#isSignedBy(certificate)`
 | |
| 
 | |
| Tests whether this Certificate was validly signed by the subject of the given
 | |
| certificate. Also tests that the issuer Identity of this Certificate and the
 | |
| subject Identity of the other Certificate are equivalent.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `certificate` -- another Certificate instance
 | |
| 
 | |
| Returns a Boolean.
 | |
| 
 | |
| ### `Certificate#fingerprint([hashAlgo])`
 | |
| 
 | |
| Returns the X509-style fingerprint of the entire certificate (as a Fingerprint
 | |
| instance). This matches what a web-browser or similar would display as the
 | |
| certificate fingerprint and should not be confused with the fingerprint of the
 | |
| subject's public key.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `hashAlgo` -- an optional String, any hash function name
 | |
| 
 | |
| ### `Certificate#toBuffer([format])`
 | |
| 
 | |
| Serializes the Certificate to a Buffer and returns it.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `format` -- an optional String, output format, one of `'openssh'`, `'pem'` or
 | |
|                `'x509'`. Defaults to `'x509'`.
 | |
| 
 | |
| Returns a Buffer.
 | |
| 
 | |
| ### `Certificate#toString([format])`
 | |
| 
 | |
|  - `format` -- an optional String, output format, one of `'openssh'`, `'pem'` or
 | |
|                `'x509'`. Defaults to `'pem'`.
 | |
| 
 | |
| Returns a String.
 | |
| 
 | |
| ## Certificate identities
 | |
| 
 | |
| ### `identityForHost(hostname)`
 | |
| 
 | |
| Constructs a host-type Identity for a given hostname.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `hostname` -- the fully qualified DNS name of the host
 | |
| 
 | |
| Returns an Identity instance.
 | |
| 
 | |
| ### `identityForUser(uid)`
 | |
| 
 | |
| Constructs a user-type Identity for a given UID.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `uid` -- a String, user identifier (login name)
 | |
| 
 | |
| Returns an Identity instance.
 | |
| 
 | |
| ### `identityForEmail(email)`
 | |
| 
 | |
| Constructs an email-type Identity for a given email address.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `email` -- a String, email address
 | |
| 
 | |
| Returns an Identity instance.
 | |
| 
 | |
| ### `identityFromDN(dn)`
 | |
| 
 | |
| Parses an LDAP-style DN string (e.g. `'CN=foo, C=US'`) and turns it into an
 | |
| Identity instance.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `dn` -- a String
 | |
| 
 | |
| Returns an Identity instance.
 | |
| 
 | |
| ### `identityFromArray(arr)`
 | |
| 
 | |
| Constructs an Identity from an array of DN components (see `Identity#toArray()`
 | |
| for the format).
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `arr` -- an Array of Objects, DN components with `name` and `value`
 | |
| 
 | |
| Returns an Identity instance.
 | |
| 
 | |
| 
 | |
| Supported attributes in DNs:
 | |
| 
 | |
| | Attribute name | OID |
 | |
| | -------------- | --- |
 | |
| | `cn` | `2.5.4.3` |
 | |
| | `o` | `2.5.4.10` |
 | |
| | `ou` | `2.5.4.11` |
 | |
| | `l` | `2.5.4.7` |
 | |
| | `s` | `2.5.4.8` |
 | |
| | `c` | `2.5.4.6` |
 | |
| | `sn` | `2.5.4.4` |
 | |
| | `postalCode` | `2.5.4.17` |
 | |
| | `serialNumber` | `2.5.4.5` |
 | |
| | `street` | `2.5.4.9` |
 | |
| | `x500UniqueIdentifier` | `2.5.4.45` |
 | |
| | `role` | `2.5.4.72` |
 | |
| | `telephoneNumber` | `2.5.4.20` |
 | |
| | `description` | `2.5.4.13` |
 | |
| | `dc` | `0.9.2342.19200300.100.1.25` |
 | |
| | `uid` | `0.9.2342.19200300.100.1.1` |
 | |
| | `mail` | `0.9.2342.19200300.100.1.3` |
 | |
| | `title` | `2.5.4.12` |
 | |
| | `gn` | `2.5.4.42` |
 | |
| | `initials` | `2.5.4.43` |
 | |
| | `pseudonym` | `2.5.4.65` |
 | |
| 
 | |
| ### `Identity#toString()`
 | |
| 
 | |
| Returns the identity as an LDAP-style DN string.
 | |
| e.g. `'CN=foo, O=bar corp, C=us'`
 | |
| 
 | |
| ### `Identity#type`
 | |
| 
 | |
| The type of identity. One of `'host'`, `'user'`, `'email'` or `'unknown'`
 | |
| 
 | |
| ### `Identity#hostname`
 | |
| ### `Identity#uid`
 | |
| ### `Identity#email`
 | |
| 
 | |
| Set when `type` is `'host'`, `'user'`, or `'email'`, respectively. Strings.
 | |
| 
 | |
| ### `Identity#cn`
 | |
| 
 | |
| The value of the first `CN=` in the DN, if any. It's probably better to use
 | |
| the `#get()` method instead of this property.
 | |
| 
 | |
| ### `Identity#get(name[, asArray])`
 | |
| 
 | |
| Returns the value of a named attribute in the Identity DN. If there is no
 | |
| attribute of the given name, returns `undefined`. If multiple components
 | |
| of the DN contain an attribute of this name, an exception is thrown unless
 | |
| the `asArray` argument is given as `true` -- then they will be returned as
 | |
| an Array in the same order they appear in the DN.
 | |
| 
 | |
| Parameters
 | |
| 
 | |
|  - `name` -- a String
 | |
|  - `asArray` -- an optional Boolean
 | |
| 
 | |
| ### `Identity#toArray()`
 | |
| 
 | |
| Returns the Identity as an Array of DN component objects. This looks like:
 | |
| 
 | |
| ```js
 | |
| [ {
 | |
|   "name": "cn",
 | |
|   "value": "Joe Bloggs"
 | |
| },
 | |
| {
 | |
|   "name": "o",
 | |
|   "value": "Organisation Ltd"
 | |
| } ]
 | |
| ```
 | |
| 
 | |
| Each object has a `name` and a `value` property. The returned objects may be
 | |
| safely modified.
 | |
| 
 | |
| Errors
 | |
| ------
 | |
| 
 | |
| ### `InvalidAlgorithmError`
 | |
| 
 | |
| The specified algorithm is not valid, either because it is not supported, or
 | |
| because it was not included on a list of allowed algorithms.
 | |
| 
 | |
| Thrown by `Fingerprint.parse`, `Key#fingerprint`.
 | |
| 
 | |
| Properties
 | |
| 
 | |
| - `algorithm` -- the algorithm that could not be validated
 | |
| 
 | |
| ### `FingerprintFormatError`
 | |
| 
 | |
| The fingerprint string given could not be parsed as a supported fingerprint
 | |
| format, or the specified fingerprint format is invalid.
 | |
| 
 | |
| Thrown by `Fingerprint.parse`, `Fingerprint#toString`.
 | |
| 
 | |
| Properties
 | |
| 
 | |
| - `fingerprint` -- if caused by a fingerprint, the string value given
 | |
| - `format` -- if caused by an invalid format specification, the string value given
 | |
| 
 | |
| ### `KeyParseError`
 | |
| 
 | |
| The key data given could not be parsed as a valid key.
 | |
| 
 | |
| Properties
 | |
| 
 | |
| - `keyName` -- `filename` that was given to `parseKey`
 | |
| - `format` -- the `format` that was trying to parse the key (see `parseKey`)
 | |
| - `innerErr` -- the inner Error thrown by the format parser
 | |
| 
 | |
| ### `KeyEncryptedError`
 | |
| 
 | |
| The key is encrypted with a symmetric key (ie, it is password protected). The
 | |
| parsing operation would succeed if it was given the `passphrase` option.
 | |
| 
 | |
| Properties
 | |
| 
 | |
| - `keyName` -- `filename` that was given to `parseKey`
 | |
| - `format` -- the `format` that was trying to parse the key (currently can only
 | |
|               be `"pem"`)
 | |
| 
 | |
| ### `CertificateParseError`
 | |
| 
 | |
| The certificate data given could not be parsed as a valid certificate.
 | |
| 
 | |
| Properties
 | |
| 
 | |
| - `certName` -- `filename` that was given to `parseCertificate`
 | |
| - `format` -- the `format` that was trying to parse the key
 | |
|               (see `parseCertificate`)
 | |
| - `innerErr` -- the inner Error thrown by the format parser
 | |
| 
 | |
| Friends of sshpk
 | |
| ----------------
 | |
| 
 | |
|  * [`sshpk-agent`](https://github.com/arekinath/node-sshpk-agent) is a library
 | |
|    for speaking the `ssh-agent` protocol from node.js, which uses `sshpk`
 |