242 lines
9.0 KiB
Ruby
242 lines
9.0 KiB
Ruby
# frozen_string_literal: true
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require "webauthn"
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require "webauthn/security_key_registration_service"
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##
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# These tests use the following parameters generated on a local discourse
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# instance to test an actual authentication flow:
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#
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# - credential_id
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# - public_key
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# - challenge
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# - signature
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# - authenticator_data
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# - client_data_origin
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# - challenge_params_origin
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#
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# To create another test (e.g. for a different COSE algorithm) you need to:
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#
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# 1. Add a security key for a user on a local discourse instance. Go into
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# the console and get the credential_id and public_key params from there.
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# 2. Log out and try to log back in to that user to get the security
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# key challenge
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# 3. Touch the security key. Inside the authenticate_security_key method
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# you need to add puts debugger statements (or use binding.pry) like so:
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#
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# puts client_data
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# puts signature
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# puts auth_data
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#
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# The auth_data will have the challenge param, but you must Base64.decode64 to
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# use it in the let(:challenge) variable. The signature and auth_data params
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# can be used as is.
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#
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# You also need to make sure that client_data_param has the exact same structure
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# and order of keys as auth_data, otherwise even with everything else right the
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# public key verification will fail.
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#
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# The origin params just need to be whatever your localhost URL for Discourse is.
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RSpec.describe Webauthn::SecurityKeyAuthenticationService do
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let(:security_key_user) { current_user }
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let!(:security_key) do
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Fabricate(
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:user_security_key,
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credential_id: credential_id,
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public_key: public_key,
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user: security_key_user,
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last_used: nil,
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)
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end
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let(:public_key) do
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"pQECAyYgASFYIMNgw4GCpwBUlR2SznJ1yY7B9yFvsuxhfo+C9kcA4IitIlggRdofrCezymy2B/YarX+gfB6gZKg648/cHIMjf6wWmmU="
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end
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let(:credential_id) do
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"mJAJ4CznTO0SuLkJbYwpgK75ao4KMNIPlU5KWM92nq39kRbXzI9mSv6GxTcsMYoiPgaouNw7b7zBiS4vsQaO6A=="
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end
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let(:challenge) { "81d4acfbd69eafa8f02bc2ecbec5267be8c9b28c1e0ba306d52b79f0f13d" }
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let(:client_data_challenge) { Base64.strict_encode64(challenge) }
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let(:client_data_webauthn_type) { "webauthn.get" }
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let(:client_data_origin) { "http://localhost:3000" }
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##
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# IMPORTANT: For the SHA256 hash to match the same one as was used to generate
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# the values for this spec, the three keys and values must be in the same order
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# (challenge, origin, type)
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let(:client_data_param) do
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{
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challenge: client_data_challenge,
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origin: client_data_origin,
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type: client_data_webauthn_type,
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}
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end
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##
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# These are sourced from an actual login using the UserSecurityKey credential
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# defined in this spec, generated via a local discourse.
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let(:signature) do
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"MEUCIBppPyK8blxBDoktU54mI1vWEY96r1V5H1rEBtPDxwcGAiEAoi7LCmMoEAuWYu0krZpflZlULsbURCGcqOwP06amXYE="
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end
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let(:authenticator_data) { "SZYN5YgOjGh0NBcPZHZgW4/krrmihjLHmVzzuoMdl2MBAAAAVw==" }
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let(:params) do
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{
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clientData: Base64.strict_encode64(client_data_param.to_json),
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credentialId: credential_id,
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authenticatorData: authenticator_data,
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signature: signature,
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}
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end
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##
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# The original key was generated in localhost
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let(:rp_id) { "localhost" }
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let(:challenge_params_origin) { "http://localhost:3000" }
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let(:challenge_params) { { challenge: challenge, rp_id: rp_id, origin: challenge_params_origin } }
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let(:current_user) { Fabricate(:user) }
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let(:subject) { described_class.new(current_user, params, challenge_params) }
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it "updates last_used when the security key and params are valid" do
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expect(subject.authenticate_security_key).to eq(true)
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expect(security_key.reload.last_used).not_to eq(nil)
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end
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context "when params is blank" do
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let(:params) { nil }
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it "returns false with no validation" do
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expect(subject.authenticate_security_key).to eq(false)
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end
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end
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context "when params is not blank and not a hash" do
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let(:params) { "test" }
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it "returns false with no validation" do
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expect(subject.authenticate_security_key).to eq(false)
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end
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end
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context "when the credential ID does not match any user security key in the database" do
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before { security_key.destroy }
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it "raises a NotFoundError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::NotFoundError,
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I18n.t("webauthn.validation.not_found_error"),
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)
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end
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end
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context "when the credential ID does exist but it is for a different user" do
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let(:security_key_user) { Fabricate(:user) }
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it "raises an OwnershipError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::OwnershipError,
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I18n.t("webauthn.validation.ownership_error"),
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)
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end
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end
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context "when the client data webauthn type is not webauthn.get" do
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let(:client_data_webauthn_type) { "webauthn.explode" }
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it "raises an InvalidTypeError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::InvalidTypeError,
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I18n.t("webauthn.validation.invalid_type_error"),
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)
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end
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end
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context "when the decoded challenge does not match the original challenge provided by the server" do
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let(:client_data_challenge) { Base64.strict_encode64("invalid challenge") }
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it "raises a ChallengeMismatchError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::ChallengeMismatchError,
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I18n.t("webauthn.validation.challenge_mismatch_error"),
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)
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end
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end
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context "when the origin of the client data does not match the server origin" do
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let(:client_data_origin) { "https://someothersite.com" }
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it "raises a InvalidOriginError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::InvalidOriginError,
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I18n.t("webauthn.validation.invalid_origin_error"),
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)
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end
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end
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context "when the sha256 hash of the relaying party ID does not match the one in attestation.authData" do
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let(:rp_id) { "bad_rp_id" }
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it "raises a InvalidRelyingPartyIdError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::InvalidRelyingPartyIdError,
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I18n.t("webauthn.validation.invalid_relying_party_id_error"),
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)
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end
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end
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context "when there is a problem verifying the public key (e.g. invalid signature)" do
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let(:signature) { Base64.strict_encode64("badsig") }
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it "raises a PublicKeyError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::PublicKeyError,
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I18n.t("webauthn.validation.public_key_error"),
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)
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end
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end
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context "when the COSE algorithm used cannot be found" do
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before { COSE::Algorithm.expects(:find).returns(nil) }
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it "raises a UnknownCOSEAlgorithmError" do
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expect { subject.authenticate_security_key }.to raise_error(
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Webauthn::UnknownCOSEAlgorithmError,
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I18n.t("webauthn.validation.unknown_cose_algorithm_error"),
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)
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end
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end
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context "for windows hello (alg -257)" do
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##
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# These are sourced from an actual login using the UserSecurityKey credential
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# defined in this spec, generated via a local discourse.
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let(:challenge) { "fa7cb122f8713745dc08e16863e087ffa2d3bfda7f1b0386ea4b14635bb6" }
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let(:signature) do
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"OKEP/8oiojjE+LBwg6F37yJzjOTT9mBPukrW1E8Sih5Vh/3p9WHrqZdylxr1x9z/c8GplC0ABayanpAqN/miQezt3wm97gIwoHq/6rrmHDZu6irQhpjeX9yHRlu0lQw+SUEZfoW3iB4oP/d2ryYlafFA9intm++lLlP/qI3mvpCQwkAeotaelx7fn0RwiY767dG+bGVPyYuUicGHcLLvCY2k0G8kRQ7I5SQqB+dIcOINWikC9I2xvUKu6Br7hZZIrDy+soFtdnnCnvi2q/3ocOPYL5jy58wdpCTsh1RRPIEF/fQFVDOXtdS7PVgaa0PMBcWMCe5TimwGlTlICnsm+g=="
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end
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let(:authenticator_data) { "SZYN5YgOjGh0NBcPZHZgW4/krrmihjLHmVzzuoMdl2MFAAAABA==" }
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let(:credential_id) { "8AddFow3jT87k1UPWvjn+rOetCEambpESGZ+z/63hOE=" }
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let(:public_key) do
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"pAEDAzkBACBZAQCqsl50KrR5zVm/QT9vWkeGTGxby32m0QRtCRh2UWseqoG0ZmBhGeWEYvkdoYlB1jObQKEHsAeB+1NBf5q69/88AA5zv4fzrvCydCtL41EUsHYFEbaPGnB61zZmYVLTPI7BYa+fu4F4MzFa924s36tVlU/L7n04peviJVZW2C1YIQfwOGDZJSvUpqJoZMQtw1vGRfrb4cQKlHfrpDZUpa3QLE8phh4ce4nwtX1tUnUGgCy8sOaFVkDNufENGTNr8HdAIHcinUiax3yy/Q8LjSZb8UR2ha6oXSe1vRHhj001B/P/mr5AdVMxSrOT1sUNXWkHv8L8IzS/iTBQpsC8CADZIUMBAAE="
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end
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let(:challenge_params_origin) { "http://localhost:4200" }
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let(:client_data_origin) { "http://localhost:4200" }
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# This has to be in the exact same order with the same data as it was originally
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# generated.
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let(:client_data_param) do
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{
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type: client_data_webauthn_type,
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challenge: client_data_challenge,
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origin: client_data_origin,
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crossOrigin: false,
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other_keys_can_be_added_here:
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"do not compare clientDataJSON against a template. See https://goo.gl/yabPex",
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}
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end
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it "updates last_used when the security key and params are valid" do
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expect(subject.authenticate_security_key).to eq(true)
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expect(security_key.reload.last_used).not_to eq(nil)
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end
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end
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it "all supported algorithms are implemented" do
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Webauthn::SUPPORTED_ALGORITHMS.each { |alg| expect(COSE::Algorithm.find(alg)).not_to be_nil }
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end
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end
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