Manual Reference Pages - VM::EC2::SECURITY::TOKEN (3)
VM::EC2::Security::Token - Temporary security token object
# under your account
$ec2 = VM::EC2->new(...); # as usual
my $policy = VM::EC2::Security::Policy->new;
my $token = $ec2->get_federation_token(-name => TemporaryUser,
-duration => 60*60*3, # 3 hrs, as seconds
-policy => $policy);
my $serialized = $token->credentials->serialize;
# get the serialized token to the temporary user
# under the temporary users account
my $serialized = get_data_somehow();
# create a copy of the token from its serialized form
my $token = VM::EC2::Security::Credentials->new_from_serialized($serialized);
# open a new EC2 connection with this token. User will be
# able to run all the methods specified in the policy.
my $ec2 = VM::EC2->new(-security_token => $token);
# convenience routine; will return a VM::EC2 object authorized
# to use the current token
my $ec2 = $token->new_ec2;
VM::EC2::Security::Token objects allow you to grant a user access to
some or all of your EC2 resources for a limited period of time. The
user does not have to have his own AWS account.
Token objects are returned by calls to VM::EC2->get_federation_token()
and get_session_token(). The former call is used to create a temporary
user with privileges restricted to those listed in the accompanying
policy (a VM::EC2::Security::Policy object). The latter call is used
in conjunction with multi-factor authentication devices, such as smart
cards. The tokens returned by get_session_token() are not associated
with a user account nor a policy, and grant privileges to all EC2
actions and resources. Both federation and session tokens have an
expiry time between a few seconds and 36 hours.
A VM::EC2::Security::Credentials object contained within the token
contains the temporary secret access key, acess key ID, and a session
token string that unlocks the access key. The credentials object can
be serialized into a form suitable for sending to a user via a secure
channel, such as SSL or S/MIME e-mail, and unserialized at the
receiving end into a copy of the original credentials object.
Either the token object, or its contained credentials object can be
used passed to VM::EC2->new() via the <B>-security_tokenB> parameter in
order to gain access to EC2 resources.
credentials() -- The VM::EC2::Security::Credentials object
that contains the session token, access key ID,
and secret key.
federatedUser() -- the VM::EC2::Security::FederatedUser object that
contains information about the temporary user
packedPolicySize() -- A percentage value indicating the size of the policy in
packed form relative to the maximum allowed size.
Policies in excess of 100% will be rejected by the
secret_access_key()-- Convenience method that calls the credentials objects
access_key_id() -- Convenience method that calls the credentials objects
session_token() -- Convenience method that calls the credentials objects
new_ec2(@args) -- Convenience method that returns a VM::EC2 object authorized
with the current token. You may pass any of the arguments
accepted by VM::EC2->new(), except that -access_key and
-secret_key will be ignored if present.
When used in a string context, this object will interpolate as the
session token, and can be used for the -security_token parameter in
Lincoln Stein <email@example.com>.
Copyright (c) 2011 Ontario Institute for Cancer Research
This package and its accompanying libraries is free software; you can
redistribute it and/or modify it under the terms of the GPL (either
version 1, or at your option, any later version) or the Artistic
License 2.0. Refer to LICENSE for the full license text. In addition,
please see DISCLAIMER.txt for disclaimers of warranty.
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