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Edit File : utils.js \| Size : 2.77 KB
// Copyright 2012 Joyent, Inc. All rights reserved. var assert = require('assert-plus'); var sshpk = require('sshpk'); var util = require('util'); var HASH_ALGOS = { 'sha1': true, 'sha256': true, 'sha512': true }; var PK_ALGOS = { 'rsa': true, 'dsa': true, 'ecdsa': true }; function HttpSignatureError(message, caller) { if (Error.captureStackTrace) Error.captureStackTrace(this, caller \|\| HttpSignatureError); this.message = message; this.name = caller.name; } util.inherits(HttpSignatureError, Error); function InvalidAlgorithmError(message) { HttpSignatureError.call(this, message, InvalidAlgorithmError); } util.inherits(InvalidAlgorithmError, HttpSignatureError); function validateAlgorithm(algorithm) { var alg = algorithm.toLowerCase().split('-'); if (alg.length !== 2) { throw (new InvalidAlgorithmError(alg[0].toUpperCase() + ' is not a ' + 'valid algorithm')); } if (alg[0] !== 'hmac' && !PK_ALGOS[alg[0]]) { throw (new InvalidAlgorithmError(alg[0].toUpperCase() + ' type keys ' + 'are not supported')); } if (!HASH_ALGOS[alg[1]]) { throw (new InvalidAlgorithmError(alg[1].toUpperCase() + ' is not a ' + 'supported hash algorithm')); } return (alg); } ///--- API module.exports = { HASH_ALGOS: HASH_ALGOS, PK_ALGOS: PK_ALGOS, HttpSignatureError: HttpSignatureError, InvalidAlgorithmError: InvalidAlgorithmError, validateAlgorithm: validateAlgorithm, /** * Converts an OpenSSH public key (rsa only) to a PKCS#8 PEM file. * * The intent of this module is to interoperate with OpenSSL only, * specifically the node crypto module's `verify` method. * * @param {String} key an OpenSSH public key. * @return {String} PEM encoded form of the RSA public key. * @throws {TypeError} on bad input. * @throws {Error} on invalid ssh key formatted data. / sshKeyToPEM: function sshKeyToPEM(key) { assert.string(key, 'ssh_key'); var k = sshpk.parseKey(key, 'ssh'); return (k.toString('pem')); }, /* * Generates an OpenSSH fingerprint from an ssh public key. * * @param {String} key an OpenSSH public key. * @return {String} key fingerprint. * @throws {TypeError} on bad input. * @throws {Error} if what you passed doesn't look like an ssh public key. / fingerprint: function fingerprint(key) { assert.string(key, 'ssh_key'); var k = sshpk.parseKey(key, 'ssh'); return (k.fingerprint('md5').toString('hex')); }, /* * Converts a PKGCS#8 PEM file to an OpenSSH public key (rsa) * * The reverse of the above function. */ pemToRsaSSHKey: function pemToRsaSSHKey(pem, comment) { assert.equal('string', typeof (pem), 'typeof pem'); var k = sshpk.parseKey(pem, 'pem'); k.comment = comment; return (k.toString('ssh')); } }; Back

Edit File : utils.js | Size : 2.77 KB

var assert = require('assert-plus');
var sshpk = require('sshpk');
var util = require('util');

var HASH_ALGOS = {
  'sha1': true,
  'sha256': true,
  'sha512': true
};

var PK_ALGOS = {
  'rsa': true,
  'dsa': true,
  'ecdsa': true
};

function HttpSignatureError(message, caller) {
  if (Error.captureStackTrace)
    Error.captureStackTrace(this, caller || HttpSignatureError);

this.message = message;
  this.name = caller.name;
}
util.inherits(HttpSignatureError, Error);

function InvalidAlgorithmError(message) {
  HttpSignatureError.call(this, message, InvalidAlgorithmError);
}
util.inherits(InvalidAlgorithmError, HttpSignatureError);

function validateAlgorithm(algorithm) {
  var alg = algorithm.toLowerCase().split('-');

if (alg.length !== 2) {
    throw (new InvalidAlgorithmError(alg[0].toUpperCase() + ' is not a ' +
      'valid algorithm'));
  }

if (alg[0] !== 'hmac' && !PK_ALGOS[alg[0]]) {
    throw (new InvalidAlgorithmError(alg[0].toUpperCase() + ' type keys ' +
      'are not supported'));
  }

if (!HASH_ALGOS[alg[1]]) {
    throw (new InvalidAlgorithmError(alg[1].toUpperCase() + ' is not a ' +
      'supported hash algorithm'));
  }

return (alg);
}

///--- API

module.exports = {

HASH_ALGOS: HASH_ALGOS,
  PK_ALGOS: PK_ALGOS,

HttpSignatureError: HttpSignatureError,
  InvalidAlgorithmError: InvalidAlgorithmError,

validateAlgorithm: validateAlgorithm,

/**
   * Converts an OpenSSH public key (rsa only) to a PKCS#8 PEM file.
   *
   * The intent of this module is to interoperate with OpenSSL only,
   * specifically the node crypto module's `verify` method.
   *
   * @param {String} key an OpenSSH public key.
   * @return {String} PEM encoded form of the RSA public key.
   * @throws {TypeError} on bad input.
   * @throws {Error} on invalid ssh key formatted data.
   */
  sshKeyToPEM: function sshKeyToPEM(key) {
    assert.string(key, 'ssh_key');

var k = sshpk.parseKey(key, 'ssh');
    return (k.toString('pem'));
  },

/**
   * Generates an OpenSSH fingerprint from an ssh public key.
   *
   * @param {String} key an OpenSSH public key.
   * @return {String} key fingerprint.
   * @throws {TypeError} on bad input.
   * @throws {Error} if what you passed doesn't look like an ssh public key.
   */
  fingerprint: function fingerprint(key) {
    assert.string(key, 'ssh_key');

var k = sshpk.parseKey(key, 'ssh');
    return (k.fingerprint('md5').toString('hex'));
  },

/**
   * Converts a PKGCS#8 PEM file to an OpenSSH public key (rsa)
   *
   * The reverse of the above function.
   */
  pemToRsaSSHKey: function pemToRsaSSHKey(pem, comment) {
    assert.equal('string', typeof (pem), 'typeof pem');

var k = sshpk.parseKey(pem, 'pem');
    k.comment = comment;
    return (k.toString('ssh'));
  }
};

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