Function parseOpenSSHPrivKeys

lib/protocol/keyParser.js:607–794

(data, nkeys, decrypted)

  };

  function parseOpenSSHPrivKeys(data, nkeys, decrypted) {
    const keys = [];
    /*
      uint32  checkint
      uint32  checkint
      string  privatekey1
      string  comment1
      string  privatekey2
      string  comment2
      ...
      string  privatekeyN
      string  commentN
      char  1
      char  2
      char  3
      ...
      char  padlen % 255
    */
    if (data.length < 8)
      return new Error('Malformed OpenSSH private key');
    const check1 = readUInt32BE(data, 0);
    const check2 = readUInt32BE(data, 4);
    if (check1 !== check2) {
      if (decrypted) {
        return new Error(
          'OpenSSH key integrity check failed -- bad passphrase?'
        );
      }
      return new Error('OpenSSH key integrity check failed');
    }
    data._pos = 8;
    let i;
    let oid;
    for (i = 0; i < nkeys; ++i) {
      let algo;
      let privPEM;
      let pubPEM;
      let pubSSH;
      // The OpenSSH documentation for the key format actually lies, the
      // entirety of the private key content is not contained with a string
      // field, it's actually the literal contents of the private key, so to be
      // able to find the end of the key data you need to know the layout/format
      // of each key type ...
      const type = readString(data, data._pos, true);
      if (type === undefined)
        return new Error('Malformed OpenSSH private key');

      switch (type) {
        case 'ssh-rsa': {
          /*
            string  n -- public
            string  e -- public
            string  d -- private
            string  iqmp -- private
            string  p -- private
            string  q -- private
          */
          const n = readString(data, data._pos);