def do_keygen(args):
    """Executes the key generation operation, given the parsed arguments.

    Args:
        args (:obj:`Namespace`): The parsed args.
    """
    if args.key_name is not None:
        key_name = args.key_name
    else:
        key_name = 'validator'

    key_dir = get_key_dir()

    if not os.path.exists(key_dir):
        raise CliException("Key directory does not exist: {}".format(key_dir))

    priv_filename = os.path.join(key_dir, key_name + '.priv')
    pub_filename = os.path.join(key_dir, key_name + '.pub')

    if not args.force:
        file_exists = False
        for filename in [priv_filename, pub_filename]:
            if os.path.exists(filename):
                file_exists = True
                print('file exists: {}'.format(filename), file=sys.stderr)
        if file_exists:
            raise CliException(
                'files exist, rerun with --force to overwrite existing files')

    context = create_context('secp256k1')

    private_key = context.new_random_private_key()
    public_key = context.get_public_key(private_key)

    try:
        priv_exists = os.path.exists(priv_filename)
        with open(priv_filename, 'w') as priv_fd:
            if not args.quiet:
                if priv_exists:
                    print('overwriting file: {}'.format(priv_filename))
                else:
                    print('writing file: {}'.format(priv_filename))
            priv_fd.write(private_key.as_hex())
            priv_fd.write('\n')
            # Get the uid and gid of the key directory
            keydir_info = os.stat(key_dir)
            keydir_gid = keydir_info.st_gid
            keydir_uid = keydir_info.st_uid
            # Set user and group on keys to the user/group of the key directory
            os.chown(priv_filename, keydir_uid, keydir_gid)
            # Set the private key u+rw g+r
            os.chmod(priv_filename, 0o640)

        pub_exists = os.path.exists(pub_filename)
        with open(pub_filename, 'w') as pub_fd:
            if not args.quiet:
                if pub_exists:
                    print('overwriting file: {}'.format(pub_filename))
                else:
                    print('writing file: {}'.format(pub_filename))
            pub_fd.write(public_key.as_hex())
            pub_fd.write('\n')
            # Set user and group on keys to the user/group of the key directory
            os.chown(pub_filename, keydir_uid, keydir_gid)
            # Set the public key u+rw g+r o+r
            os.chmod(pub_filename, 0o644)

    except IOError as ioe:
        raise CliException('IOError: {}'.format(str(ioe)))
def do_keygen ( args ) : if args . key_name is not None : key_name = args . key_name else : key_name = 'validator' key_dir = get_key_dir ( ) if not os . path . exists ( key_dir ) : raise CliException ( "Key directory does not exist: {}" . format ( key_dir ) ) priv_filename = os . path . join ( key_dir , key_name + '.priv' ) pub_filename = os . path . join ( key_dir , key_name + '.pub' ) if not args . force : file_exists = False for filename in [ priv_filename , pub_filename ] : if os . path . exists ( filename ) : file_exists = True print ( 'file exists: {}' . format ( filename ) , file = sys . stderr ) if file_exists : raise CliException ( 'files exist, rerun with --force to overwrite existing files' ) context = create_context ( 'secp256k1' ) private_key = context . new_random_private_key ( ) public_key = context . get_public_key ( private_key ) try : priv_exists = os . path . exists ( priv_filename ) with open ( priv_filename , 'w' ) as priv_fd : if not args . quiet : if priv_exists : print ( 'overwriting file: {}' . format ( priv_filename ) ) else : print ( 'writing file: {}' . format ( priv_filename ) ) priv_fd . write ( private_key . as_hex ( ) ) priv_fd . write ( '\n' ) keydir_info = os . stat ( key_dir ) keydir_gid = keydir_info . st_gid keydir_uid = keydir_info . st_uid os . chown ( priv_filename , keydir_uid , keydir_gid ) os . chmod ( priv_filename , 0o640 ) pub_exists = os . path . exists ( pub_filename ) with open ( pub_filename , 'w' ) as pub_fd : if not args . quiet : if pub_exists : print ( 'overwriting file: {}' . format ( pub_filename ) ) else : print ( 'writing file: {}' . format ( pub_filename ) ) pub_fd . write ( public_key . as_hex ( ) ) pub_fd . write ( '\n' ) os . chown ( pub_filename , keydir_uid , keydir_gid ) os . chmod ( pub_filename , 0o644 ) except IOError as ioe : raise CliException ( 'IOError: {}' . format ( str ( ioe ) ) )
Executes the key generation operation, given the parsed arguments.

    Args:
        args (:obj:`Namespace`): The parsed args.