// NewRouterContext generates new keys, loads a local domain configuration from
// path and binds an anonymous listener socket to addr on network
// network. A delegation is requested from the Tao t which is nominally
// the parent of this hosted program.
func NewRouterContext(path, network, addr string, batchSize int, timeout time.Duration,
t tao.Tao) (hp *RouterContext, err error) {
hp = new(RouterContext)
hp.network = network
hp.timeout = timeout
// Generate keys and get attestation from parent.
if hp.keys, err = tao.NewTemporaryTaoDelegatedKeys(tao.Signing|tao.Crypting, nil, t); err != nil {
return nil, err
}
// Load domain from local configuration.
if hp.domain, err = tao.LoadDomain(path, nil); err != nil {
return nil, err
}
// Bind address to socket.
if hp.proxyListener, err = tao.Listen(network, addr, hp.keys, nil, nil, nil); err != nil {
return nil, err
}
// Instantiate the queues.
hp.sendQueue = NewQueue(network, batchSize, timeout)
hp.replyQueue = NewQueue(network, batchSize, timeout)
hp.killQueue = make(chan bool)
hp.killQueueErrorHandler = make(chan bool)
go hp.sendQueue.DoQueue(hp.killQueue)
go hp.replyQueue.DoQueue(hp.killQueue)
go hp.sendQueue.DoQueueErrorHandler(hp.replyQueue, hp.killQueueErrorHandler)
go hp.replyQueue.DoQueueErrorHandlerLog("reply queue", hp.killQueueErrorHandler)
return hp, nil
}
func main() {
flag.Parse()
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if err != nil {
glog.Exitf("Couldn't load the config path %s: %s\n", *configPath, err)
return
}
sock, err := net.Listen(*network, *addr)
if err != nil {
glog.Exit("Couldn't bind socket to address:", err)
return
}
fmt.Println("tcca: accepting connections")
for {
conn, err := sock.Accept()
if err != nil {
glog.Exitf("Couldn't accept a connection on %s: %s", *addr, err)
return
}
go tao.HandleCARequest(conn, domain.Keys.SigningKey, domain.Guard)
}
}
func main() {
flag.Parse()
// Check to see if we are running in Docker mode with linked containers.
// If so, then there will be an environment variable SERVER_PORT that
// will contain a value of the form tcp://<ip>:<port>
serverEnvVar := os.Getenv("SERVER_PORT")
if serverEnvVar == "" {
serverAddr = net.JoinHostPort(*serverHost, *serverPort)
} else {
serverAddr = strings.TrimPrefix(serverEnvVar, "tcp://")
if serverAddr == serverEnvVar {
options.Usage("client: invalid SERVER_PORT environment variable value '%s'\n", serverEnvVar)
}
}
switch *demoAuth {
case "tcp", "tls", "tao":
default:
options.Usage("unrecognized authentication mode: %s\n", *demoAuth)
}
fmt.Println("Go Tao Demo Client")
if tao.Parent() == nil {
options.Fail(nil, "can't continue: No host Tao available")
}
domain, err := tao.LoadDomain(configPath(), nil)
options.FailIf(err, "error: couldn't load the tao domain from %s\n", configPath())
doClient(domain)
fmt.Println("Client Done")
}
func main() {
network := flag.String("network", "tcp", "The network to use for connections")
addr := flag.String("addr", "localhost:8124", "The address to listen on")
domainPass := flag.String("password", "nopassword", "The domain password for the policy key")
configPath := flag.String("config", "tao.config", "The Tao domain config")
flag.Parse()
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if err != nil {
log.Fatalf("keynegoserver: Couldn't load the config path %s: %s\n", *configPath, err)
}
// Set up temporary keys for the connection, since the only thing that
// matters to the remote client is that they receive a correctly-signed new
// attestation from the policy key.
// JLM: I left this in place but I'm not sure what a TLS connection with a
// self signed Cert buys in terms of security. The security of this protocol should
// not depend on the confidentiality or intergity of the channel. All that said,
// if we do ever distribute a signed keynegoserver cert for this TLS channel, it would
// be good.
keys, err := tao.NewTemporaryKeys(tao.Signing)
if err != nil {
log.Fatalln("keynegoserver: Couldn't set up temporary keys for the connection:", err)
}
keys.Cert, err = keys.SigningKey.CreateSelfSignedX509(&pkix.Name{
Organization: []string{"Google Tao Demo"}})
if err != nil {
log.Fatalln("keynegoserver: Couldn't set up a self-signed cert:", err)
}
SerialNumber = int64(time.Now().UnixNano()) / (1000000)
policyKey, err := tao.NewOnDiskPBEKeys(tao.Signing, []byte(*domainPass), "policy_keys", nil)
if err != nil {
log.Fatalln("keynegoserver: Couldn't get policy key:", err)
}
tlsc, err := tao.EncodeTLSCert(keys)
if err != nil {
log.Fatalln("keynegoserver: Couldn't encode a TLS cert:", err)
}
conf := &tls.Config{
RootCAs: x509.NewCertPool(),
Certificates: []tls.Certificate{*tlsc},
InsecureSkipVerify: true,
ClientAuth: tls.RequireAnyClientCert,
}
sock, err := tls.Listen(*network, *addr, conf)
if err != nil {
log.Printf("keynegoserver: error: %s", err)
}
defer sock.Close()
for {
conn, err := sock.Accept()
if err != nil {
log.Fatalln("keynegoserver: couldn't accept a connection:", err)
}
go handleRequest(conn, policyKey, domain.Guard)
}
}
// NewRouterContext generates new keys, loads a local domain configuration from
// path and binds an anonymous listener socket to addr on network
// network. A delegation is requested from the Tao t which is nominally
// the parent of this hosted program.
func NewRouterContext(path, network, addr string, batchSize int, timeout time.Duration,
x509Identity *pkix.Name, t tao.Tao) (hp *RouterContext, err error) {
hp = new(RouterContext)
hp.network = network
hp.timeout = timeout
// Generate keys and get attestation from parent.
if hp.keys, err = tao.NewTemporaryTaoDelegatedKeys(tao.Signing|tao.Crypting, t); err != nil {
return nil, err
}
// Create a certificate.
if hp.keys.Cert, err = hp.keys.SigningKey.CreateSelfSignedX509(x509Identity); err != nil {
return nil, err
}
// Load domain from local configuration.
if hp.domain, err = tao.LoadDomain(path, nil); err != nil {
return nil, err
}
// Encode TLS certificate.
cert, err := tao.EncodeTLSCert(hp.keys)
if err != nil {
return nil, err
}
tlsConfig := &tls.Config{
RootCAs: x509.NewCertPool(),
Certificates: []tls.Certificate{*cert},
InsecureSkipVerify: true,
ClientAuth: tls.NoClientCert,
}
// Bind address to socket.
if hp.proxyListener, err = tao.ListenAnonymous(network, addr, tlsConfig,
hp.domain.Guard, hp.domain.Keys.VerifyingKey, hp.keys.Delegation); err != nil {
return nil, err
}
// Instantiate the queues.
hp.sendQueue = NewQueue(network, batchSize, timeout)
hp.replyQueue = NewQueue(network, batchSize, timeout)
hp.killQueue = make(chan bool)
hp.killQueueErrorHandler = make(chan bool)
go hp.sendQueue.DoQueue(hp.killQueue)
go hp.replyQueue.DoQueue(hp.killQueue)
go hp.sendQueue.DoQueueErrorHandler(hp.replyQueue, hp.killQueueErrorHandler)
go hp.replyQueue.DoQueueErrorHandlerLog("reply queue", hp.killQueueErrorHandler)
return hp, nil
}
func queryGuard(query string) {
domain, err := tao.LoadDomain(configPath(), nil)
options.FailIf(err, "Can't load domain")
ok, err := domain.Guard.Query(query)
options.FailIf(err, "Can't process query")
if ok {
fmt.Println("The policy implies the statement.")
} else {
fmt.Println("The policy does not imply the statement")
}
}
func getTPMConfig() (string, string, []int) {
domain, err := tao.LoadDomain(configPath(), nil)
options.FailIf(err, "Can't load domain")
tpmPath := domain.Config.GetTpmInfo().GetTpmPath()
aikFile := domain.Config.GetTpmInfo().GetAikPath()
pcrVals := domain.Config.GetTpmInfo().GetPcrs()
var pcrNums []int
for _, s := range strings.Split(pcrVals, ",") {
v, err := strconv.ParseInt(s, 10, 32)
options.FailIf(err, "Can't parse TPM PCR spec")
pcrNums = append(pcrNums, int(v))
}
return tpmPath, aikFile, pcrNums
}
func loadDomain() (*tao.Domain, *x509.CertPool, error) {
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if domain == nil {
log.Printf("domainserver: no domain path - %s, pass - %s, err - %s\n",
*configPath, *domainPass, err)
return nil, nil, err
} else if err != nil {
log.Printf("domainserver: Couldn't load the config path %s: %s\n",
*configPath, err)
return nil, nil, err
}
log.Printf("domainserver: Loaded domain\n")
certPool := x509.NewCertPool()
certPool.AddCert(domain.Keys.Cert)
return domain, certPool, nil
}
// NewProxyContext loads a domain from a local configuration.
func NewProxyContext(path, network, addr string, timeout time.Duration) (p *ProxyContext, err error) {
p = new(ProxyContext)
p.network = network
p.timeout = timeout
// Load domain from a local configuration.
if p.domain, err = tao.LoadDomain(path, nil); err != nil {
return nil, err
}
// Initialize a SOCKS server.
if p.listener, err = SocksListen(network, addr); err != nil {
return nil, err
}
return p, nil
}
func getTPM2Config() (string, []int) {
domain, err := tao.LoadDomain(configPath(), nil)
options.FailIf(err, "Can't load domain")
// TODO(tmroeder): This ignores the info path, since it ignores the cert
// files.
tpmPath := domain.Config.GetTpm2Info().GetTpm2Device()
pcrVals := domain.Config.GetTpm2Info().GetTpm2Pcrs()
// TODO(tmroeder): This currently ignores the paths to the ek_cert and
// quote_cert, since it creates its own keys.
var pcrNums []int
for _, s := range strings.Split(pcrVals, ",") {
v, err := strconv.ParseInt(s, 10, 32)
options.FailIf(err, "Can't parse TPM PCR spec")
pcrNums = append(pcrNums, int(v))
}
return tpmPath, pcrNums
}
// Main provides the main functionality of linux_host. This is provided as a
// separate function to allow other code to register other Tao implementations
// (with tao.Register) before starting the code.
func Main() {
flag.Usage = help
// Get options before the command verb
flag.Parse()
// Get command verb
cmd := "help"
if flag.NArg() > 0 {
cmd = flag.Arg(0)
}
// Get options after the command verb
if flag.NArg() > 1 {
flag.CommandLine.Parse(flag.Args()[1:])
}
if !*options.Bool["quiet"] {
noise = os.Stdout
}
// Load the domain.
domain, err := tao.LoadDomain(domainConfigPath(), nil)
options.FailIf(err, "Can't load domain")
// Set $TAO_DOMAIN so it will be inherited by hosted programs
os.Unsetenv("TAO_DOMAIN")
err = os.Setenv("TAO_DOMAIN", domainPath())
options.FailIf(err, "Can't set $TAO_DOMAIN")
switch cmd {
case "help":
help()
case "init":
initHost(domain)
case "show":
showHost(domain)
case "start":
startHost(domain)
case "stop", "shutdown":
stopHost(domain)
default:
options.Usage("Unrecognized command: %s", cmd)
}
}
func Main() {
flag.Usage = help
verbose.Set(true)
// Get options before the command verb
flag.Parse()
// Get command verb
cmd := "help"
if flag.NArg() > 0 {
cmd = flag.Arg(0)
}
// Get options after the command verb
if flag.NArg() > 1 {
flag.CommandLine.Parse(flag.Args()[1:])
}
// Load the domain.
cpath := path.Join(apps.TaoDomainPath(), "tao.config")
domain, err := tao.LoadDomain(cpath, nil)
options.FailIf(err, "Can't load domain")
// Set $TAO_DOMAIN so it will be inherited by hosted programs
os.Unsetenv("TAO_DOMAIN")
err = os.Setenv("TAO_DOMAIN", apps.TaoDomainPath())
options.FailIf(err, "Can't set $TAO_DOMAIN")
switch cmd {
case "help":
help()
case "init":
initHost(domain)
case "show":
showHost(domain)
case "start":
startHost(domain)
case "stop", "shutdown":
stopHost(domain)
default:
options.Usage("Unrecognized command: %s", cmd)
}
}
func createUserKeys() {
// Read the X509Details for this user from a text protobuf file.
userKeyDetails := *options.String["user_key_details"]
xdb, err := ioutil.ReadFile(userKeyDetails)
options.FailIf(err, "Can't read user details")
var xd tao.X509Details
err = proto.UnmarshalText(string(xdb), &xd)
options.FailIf(err, "Can't parse user details: %s", userKeyDetails)
upwd := getKey("user password", "user_pass")
pwd := getKey("domain policy key password", "pass")
domain, err := tao.LoadDomain(configPath(), pwd)
options.FailIf(err, "Can't load domain")
policyKey := domain.Keys
subjectName := tao.NewX509Name(&xd)
userKeyPath := *options.String["user_key_path"]
_, err = tao.NewSignedOnDiskPBEKeys(tao.Signing, upwd, userKeyPath, subjectName, int(xd.GetSerialNumber()), policyKey)
options.FailIf(err, "Can't create user signing key")
}
func main() {
flag.Parse()
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if err != nil {
glog.Exitf("Couldn't load the config path %s: %s\n", *configPath, err)
return
}
// Set up temporary keys for the connection, since the only thing that
// matters to the remote client is that they receive a correctly-signed new
// attestation from the policy key.
keys, err := tao.NewTemporaryKeys(tao.Signing)
if err != nil {
glog.Exit("Couldn't set up temporary keys for the connection:", err)
return
}
keys.Cert, err = keys.SigningKey.CreateSelfSignedX509(&pkix.Name{
Organization: []string{"Google Tao Demo"}})
if err != nil {
glog.Exit("Couldn't set up a self-signed cert:", err)
return
}
sock, err := net.Listen(*network, *addr)
if err != nil {
glog.Exit("Couldn't bind socket to address:", err)
return
}
fmt.Println("tcca: accepting connections")
for {
conn, err := sock.Accept()
if err != nil {
glog.Exitf("Couldn't accept a connection on %s: %s", *addr, err)
return
}
go tao.HandleCARequest(conn, domain.Keys.SigningKey, domain.Guard)
}
}
func managePolicy() {
// Handle queries first
if query := *options.String["query"]; query != "" {
queryGuard(query)
return
}
// Load domain
pwd := getKey("domain policy key password", "pass")
domain, err := tao.LoadDomain(configPath(), pwd)
options.FailIf(err, "Can't load domain")
// Clear all the policy stored by the Guard.
if *options.Bool["clear"] {
domain.Guard.Clear()
err := domain.Save()
options.FailIf(err, "Can't save domain")
}
// Add permissions
if canExecute := *options.String["canexecute"]; canExecute != "" {
host := template().GetHostName()
addExecute(canExecute, host, domain)
}
if add := *options.String["add"]; add != "" {
fmt.Fprintf(noise, "Adding policy rule: %s\n", add)
err := domain.Guard.AddRule(add)
options.FailIf(err, "Can't add rule to domain")
err = domain.Save()
options.FailIf(err, "Can't save domain")
}
if *options.Bool["add_programs"] {
host := template().GetHostName()
addProgramRules(host, domain)
}
if *options.Bool["add_containers"] {
host := template().GetHostName()
addContainerRules(host, domain)
}
if domain.Config.DomainInfo.GetGuardType() == "Datalog" {
if *options.Bool["add_vms"] {
addVMRules(domain)
}
if *options.Bool["add_linux_host"] {
addLinuxHostRules(domain)
}
if *options.Bool["add_host"] {
host := template().GetHostName()
addHostRules(host, domain)
}
if *options.Bool["add_guard"] {
addGuardRules(domain)
}
if *options.Bool["add_tpm"] {
addTPMRules(domain)
}
if *options.Bool["add_tpm2"] {
addTPM2Rules(domain)
}
}
// Retract permissions
if retract := *options.String["retract"]; retract != "" {
fmt.Fprintf(noise, "Retracting policy rule: %s\n", retract)
err := domain.Guard.RetractRule(retract)
options.FailIf(err, "Can't retract rule from domain")
err = domain.Save()
options.FailIf(err, "Can't save domain")
}
if retractCanExecute := *options.String["retractcanexecute"]; retractCanExecute != "" {
host := template().GetHostName()
retractExecute(retractCanExecute, host, domain)
}
// Print the policy after all commands are executed.
if *options.Bool["show"] {
fmt.Print(domain.Guard.String())
}
}
func main() {
caAddr := flag.String("caAddr", "localhost:8124", "The address of the CA for setting up a certificate signed by the policy key")
hostcfg := flag.String("hostconfig", "tao.config", "path to host tao configuration")
serverHost := flag.String("host", "localhost", "address for client/server")
serverPort := flag.String("port", "8123", "port for client/server")
fileServerPath := flag.String("fileserver_files", "fileserver_files/", "fileserver directory")
fileServerFilePath := flag.String("stored_files", "fileserver_files/stored_files/", "fileserver directory")
country := flag.String("country", "US", "The country for the fileclient certificate")
org := flag.String("organization", "Google", "The organization for the fileclient certificate")
flag.Parse()
serverAddr := net.JoinHostPort(*serverHost, *serverPort)
hostDomain, err := tao.LoadDomain(*hostcfg, nil)
if err != nil {
log.Fatalln("fileserver: can't LoadDomain")
}
var policyCert []byte
if hostDomain.Keys.Cert != nil {
policyCert = hostDomain.Keys.Cert.Raw
}
if policyCert == nil {
log.Fatalln("fileserver: can't retrieve policy cert")
}
parentTao := tao.Parent()
if err := hostDomain.ExtendTaoName(parentTao); err != nil {
log.Fatalln("fileserver: can't extend the Tao with the policy key")
}
e := auth.PrinExt{Name: "fileserver_version_1"}
if err = parentTao.ExtendTaoName(auth.SubPrin{e}); err != nil {
log.Fatalln("fileserver: couldn't extend the Tao name")
}
taoName, err := parentTao.GetTaoName()
if err != nil {
log.Fatalln("fileserver: couldn't get tao name")
}
// Create or read the keys for fileclient.
fsKeys, err := tao.NewOnDiskTaoSealedKeys(tao.Signing|tao.Crypting, parentTao, *fileServerPath, tao.SealPolicyDefault)
if err != nil {
log.Fatalln("fileserver: couldn't set up the Tao-sealed keys:", err)
}
// Set up a temporary cert for communication with keyNegoServer.
fsKeys.Cert, err = fsKeys.SigningKey.CreateSelfSignedX509(tao.NewX509Name(&tao.X509Details{
Country: proto.String(*country),
Organization: proto.String(*org),
CommonName: proto.String(taoName.String()),
}))
if err != nil {
log.Fatalln("fileserver: couldn't create a self-signed cert for fileclient keys:", err)
}
// Contact keyNegoServer for the certificate.
if err := fileproxy.EstablishCert("tcp", *caAddr, fsKeys, hostDomain.Keys.VerifyingKey); err != nil {
log.Fatalf("fileserver: couldn't establish a cert signed by the policy key: %s", err)
}
symKeysPath := path.Join(*fileServerPath, "sealedEncKeys")
symKeys, err := fsKeys.NewSecret(symKeysPath, fileproxy.SymmetricKeySize)
if err != nil {
log.Fatalln("fileserver: couldn't get the file encryption keys")
}
tao.ZeroBytes(symKeys)
progPolicy := fileproxy.NewProgramPolicy(policyCert, taoName.String(), fsKeys, symKeys, fsKeys.Cert.Raw)
// Set up the file storage path if it doesn't exist.
if _, err := os.Stat(*fileServerFilePath); err != nil {
if err := os.MkdirAll(*fileServerFilePath, 0700); err != nil {
log.Fatalln("fileserver: couldn't create a file storage directory:", err)
}
}
if err := serve(serverAddr, *fileServerFilePath, policyCert, fsKeys, progPolicy); err != nil {
log.Fatalln("fileserver: couldn't serve connections:", err)
}
log.Printf("fileserver: done\n")
}
// Load domain info for the domain and establish Clouproxy keys and properties.
// This handles reading in existing (sealed) Cloudproxy keys and properties, or,
// if this is the first call (or a call after state has been erased), this also
// handles initialization of keys and certificates including interaction with the
// domain signing service and storage of new sealed keys and certificates.
// If TaoParadigm completes without error, programObject contains all the
// Cloudproxy information needed throughout the calling program execution
// ensures that this information is sealed and stored for subsequent invocations.
func TaoParadigm(cfg *string, filePath *string,
programObject *TaoProgramData) error {
// Load domain info for this domain.
simpleDomain, err := tao.LoadDomain(*cfg, nil)
if err != nil {
return errors.New("TaoParadigm: Can't load domain")
}
// Get policy cert.
if simpleDomain.Keys.Cert == nil {
return errors.New("TaoParadigm: Can't retrieve policy cert")
}
derPolicyCert := simpleDomain.Keys.Cert.Raw
if derPolicyCert == nil {
return errors.New("TaoParadigm: Can't retrieve der encoded policy cert")
}
// Extend tao name with policy key
simpleDomain.ExtendTaoName(tao.Parent())
// Retrieve extended name.
taoName, err := tao.Parent().GetTaoName()
if err != nil {
return errors.New("TaoParadigm: Can't extend Tao Principal name")
}
log.Printf("TaoParadigm: my name is %s\n", taoName)
// Get my keys and certificates.
sealedSymmetricKey, sealedProgramKey, programCert, certChain, err :=
LoadProgramKeys(*filePath)
if err != nil {
return errors.New("TaoParadigm: Can't retrieve existing key material")
}
// Unseal my symmetric keys, or initialize them.
var symKeys []byte
var policy string
if sealedSymmetricKey != nil {
symKeys, policy, err = tao.Parent().Unseal(sealedSymmetricKey)
if err != nil || policy != tao.SealPolicyDefault {
return errors.New("TaoParadigm: can't unseal symmetric keys")
}
} else {
symKeys, err = InitializeSealedSymmetricKeys(*filePath, tao.Parent(),
SizeofSymmetricKeys)
if err != nil {
return errors.New("TaoParadigm: InitializeSealedSymmetricKeys error")
}
}
log.Printf("Unsealed symmetric keys\n")
// Get my Program private key if present or initialize it.
var programKey *tao.Keys
if sealedProgramKey != nil {
programKey, err = SigningKeyFromBlob(tao.Parent(), sealedProgramKey, programCert)
if err != nil {
return errors.New("TaoParadigm: SigningKeyFromBlob error")
}
} else {
// Get Program key.
programKey, programCert, certChain, err = InitializeSealedProgramKey(
*filePath, tao.Parent(), *simpleDomain)
if err != nil || programKey == nil {
return errors.New("TaoParadigm: InitializeSealedSigningKey error")
}
}
log.Printf("TaoParadigm: Retrieved Signing key\n")
// Initialize Program policy object.
ok := programObject.FillTaoProgramData(derPolicyCert, taoName.String(),
*programKey, symKeys, programCert, certChain, filePath)
if !ok {
return errors.New("TaoParadigm: Can't initialize TaoProgramData")
}
return nil
}
func main() {
flag.Parse()
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if domain == nil {
log.Printf("simpledomainservice: no domain path - %s, pass - %s, err - %s\n",
*configPath, *domainPass, err)
return
} else if err != nil {
log.Printf("simpledomainservice: Couldn't load the config path %s: %s\n",
*configPath, err)
return
}
log.Printf("simpledomainservice: Loaded domain\n")
// Set up temporary keys for the connection, since the only thing that
// matters to the remote client is that they receive a correctly-signed new
// attestation from the policy key.
// JLM: I left this in place but I'm not sure what a TLS connection with a
// self signed Cert buys in terms of security.
// The security of this protocol should not depend on the
// confidentiality or intergity of the channel. All that said, if we
// do ever distribute a signed simpledomainservice cert
// for this TLS channel, it would be good.
keys, err := tao.NewTemporaryKeys(tao.Signing)
if keys == nil || err != nil {
log.Fatalln("simpledomainservice: Couldn't set up temporary keys for connection:", err)
return
}
keys.Cert, err = keys.SigningKey.CreateSelfSignedX509(&pkix.Name{
Organization: []string{"Google Tao Demo"}})
if err != nil {
log.Fatalln("simpledomainservice: Couldn't set up a self-signed cert:", err)
return
}
SerialNumber = int64(time.Now().UnixNano()) / (1000000)
policyKey := domain.Keys
fmt.Printf("\nSimpleDomainService: policyKey: %x\n", policyKey)
tlsc, err := tao.EncodeTLSCert(keys)
if err != nil {
log.Fatalln("simpledomainservice: Couldn't encode a TLS cert:", err)
}
conf := &tls.Config{
RootCAs: x509.NewCertPool(),
Certificates: []tls.Certificate{*tlsc},
InsecureSkipVerify: true,
ClientAuth: tls.RequireAnyClientCert,
}
sock, err := tls.Listen(*network, *addr, conf)
if err != nil {
log.Printf("simpledomainservice: error: %s\n", err)
}
if sock == nil {
log.Printf("simpledomainservice: Empty socket, terminating\n")
return
}
defer sock.Close()
log.Printf("simpledomainservice: accepting connections\n")
fmt.Printf("\n\nsimpledomainservice: accepting connections\n")
for {
conn, err := sock.Accept()
if conn == nil {
fmt.Printf("simpledomainservice: Empty connection\n")
log.Printf("simpledomainservice: Empty connection\n")
return
} else if err != nil {
fmt.Printf("simpledomainservice: Couldn't accept a connection on %s: %s\n", *addr, err)
log.Printf("simpledomainservice: Couldn't accept a connection on %s: %s\n", *addr, err)
return
}
go DomainRequest(conn, policyKey, domain.Guard)
}
log.Printf("simpledomainservice: finishing\n")
}
func doServer() {
var sock net.Listener
var err error
var keys *tao.Keys
network := "tcp"
domain, err := tao.LoadDomain(configPath(), nil)
options.FailIf(err, "error: couldn't load the tao domain from %s\n", configPath())
switch *demoAuth {
case "tcp":
sock, err = net.Listen(network, serverAddr)
options.FailIf(err, "server: couldn't listen to the network")
case "tls", "tao":
// Generate a private/public key for this hosted program (hp) and
// request attestation from the host of the statement "hp speaksFor
// host". The resulting certificate, keys.Delegation, is a chain of
// "says" statements extending to the policy key. The policy is
// checked by the host before this program is executed.
keys, err = tao.NewTemporaryTaoDelegatedKeys(tao.Signing, tao.Parent())
options.FailIf(err, "server: failed to generate delegated keys")
// Create a certificate for the hp.
keys.Cert, err = keys.SigningKey.CreateSelfSignedX509(&pkix.Name{
Organization: []string{"Google Tao Demo"}})
options.FailIf(err, "server: couldn't create certificate")
g := domain.Guard
if *ca != "" {
// Replace keys.Delegation with a "says" statement directly from
// the policy key.
na, err := tao.RequestTruncatedAttestation(network, *ca, keys, domain.Keys.VerifyingKey)
options.FailIf(err, "server: truncated attestation request failed")
keys.Delegation = na
g, err = newTempCAGuard(domain.Keys.VerifyingKey)
options.FailIf(err, "server: couldn't set up a new guard")
}
tlsc, err := tao.EncodeTLSCert(keys)
options.FailIf(err, "server: couldn't encode TLS certificate")
conf := &tls.Config{
RootCAs: x509.NewCertPool(),
Certificates: []tls.Certificate{*tlsc},
InsecureSkipVerify: true,
ClientAuth: tls.RequireAnyClientCert,
}
if *demoAuth == "tao" {
sock, err = tao.Listen(network, serverAddr, conf, g, domain.Keys.VerifyingKey, keys.Delegation)
options.FailIf(err, "sever: couldn't create a taonet listener")
} else {
sock, err = tls.Listen(network, serverAddr, conf)
options.FailIf(err, "server: couldn't create a tls listener")
}
}
fmt.Printf("server: listening at %s using %s authentication.\n", serverAddr, *demoAuth)
defer sock.Close()
pings := make(chan bool, 5)
connCount := 0
go func() {
for connCount = 0; connCount < *pingCount || *pingCount < 0; connCount++ { // negative means forever
conn, err := sock.Accept()
options.FailIf(err, "server: can't accept connection")
go doResponse(conn, pings)
}
}()
pingGood := 0
pingFail := 0
for {
select {
case ok := <-pings:
if ok {
pingGood++
} else {
pingFail++
}
}
}
}
func main() {
caAddr := flag.String("caAddr", "localhost:8124", "The address of the CA for setting up a certificate signed by the policy key")
hostcfg := flag.String("hostconfig", "tao.config", "path to host tao configuration")
serverHost := flag.String("host", "localhost", "address for client/server")
serverPort := flag.String("port", "8123", "port for client/server")
rollbackServerHost := flag.String("rollbackhost", "localhost", "address for rollback client/server")
rollbackServerPort := flag.String("rollbackport", "8129", "port for client/server")
fileClientPassword := flag.String("password", "BogusPass", "A password for unlocking the user certificates")
fileClientPath := flag.String("fileclient_files", "fileclient_files", "fileclient directory")
fileClientFilePath := flag.String("stored_files", "fileclient_files/stored_files", "fileclient file directory")
testFile := flag.String("test_file", "originalTestFile", "test file")
fileClientKeyPath := flag.String("usercreds", "usercreds", "user keys and certs")
country := flag.String("country", "US", "The country for the fileclient certificate")
org := flag.String("organization", "Google", "The organization for the fileclient certificate")
flag.Parse()
serverAddr := net.JoinHostPort(*serverHost, *serverPort)
hostDomain, err := tao.LoadDomain(*hostcfg, nil)
if err != nil {
log.Fatalln("fileclient: Can't load domain")
}
var derPolicyCert []byte
if hostDomain.Keys.Cert["default"] != nil {
derPolicyCert = hostDomain.Keys.Cert["default"].Raw
}
if derPolicyCert == nil {
log.Fatalln("fileclient: Can't retrieve policy cert")
}
parentTao := tao.Parent()
if err := hostDomain.ExtendTaoName(parentTao); err != nil {
log.Fatalln("fileclient: can't extend the Tao with the policy key")
}
e := auth.PrinExt{Name: "fileclient_version_1"}
if err = parentTao.ExtendTaoName(auth.SubPrin{e}); err != nil {
log.Fatalln("fileclient: couldn't extend the tao name with the policy key")
}
taoName, err := parentTao.GetTaoName()
if err != nil {
log.Fatalln("fileclient: Can't get tao name")
}
// Create or read the keys for fileclient.
// Set up a temporary cert for communication with keyNegoServer.
// TODO(kwalsh) This may no longer be needed. Is there a significance to
// this cert?
name := tao.NewX509Name(&tao.X509Details{
Country: proto.String(*country),
Organization: proto.String(*org),
CommonName: proto.String(taoName.String()),
})
fcKeys, err := tao.NewOnDiskTaoSealedKeys(tao.Signing|tao.Crypting, name, parentTao, *fileClientPath, tao.SealPolicyDefault)
if err != nil {
log.Fatalln("fileclient: couldn't set up the Tao-sealed keys:", err)
}
if err != nil {
log.Fatalln("fileclient: couldn't create a self-signed cert for fileclient keys:", err)
}
// Contact keyNegoServer for the certificate.
if err := fileproxy.EstablishCert("tcp", *caAddr, fcKeys, hostDomain.Keys.VerifyingKey); err != nil {
log.Fatalf("fileclient: couldn't establish a cert signed by the policy key: %s", err)
}
// Get the policy cert and set up TLS.
conf, err := fcKeys.TLSClientConfig(hostDomain.Keys.Cert["default"])
if err != nil {
log.Fatalln("fileclient, encode error: ", err)
}
conn, err := tls.Dial("tcp", serverAddr, conf)
if err != nil {
log.Fatalln("fileclient: can't establish channel: ", err)
}
ms := util.NewMessageStream(conn)
// Before doing any tests, create a simple file to send to the server.
testContents := `
This is a simple file to test
It has some new lines
And it doesn't have very much content.
`
if _, err := os.Stat(*fileClientFilePath); err != nil {
if err := os.MkdirAll(*fileClientFilePath, 0700); err != nil {
log.Fatalf("fileclient: couldn't create the file storage path %s: %s", *fileClientFilePath, err)
}
}
sentFileName := *testFile
sentFilePath := path.Join(*fileClientFilePath, sentFileName)
if err := ioutil.WriteFile(sentFilePath, []byte(testContents), 0600); err != nil {
log.Fatalf("fileclient: couldn't create a test file at %s: %s", sentFilePath, err)
}
// Authenticate user principal(s).
if _, err := os.Stat(*fileClientKeyPath); err != nil {
log.Fatalf("fileclient: couldn't get user credentials from %s: %s\n", *fileClientKeyPath, err)
}
// This method won't generate the right certificate in general for
// signing, which is why we check first to make sure the right directory
// already exists. But it will successfully read the signer and the
// certificate.
userKeys, err := tao.NewOnDiskPBEKeys(tao.Signing, []byte(*fileClientPassword), *fileClientKeyPath, nil)
if err != nil {
log.Fatalf("Couldn't read the keys from %s: %s\n", *fileClientKeyPath, err)
}
userCert := userKeys.Cert["default"].Raw
// Authenticate a key to use for requests to the server.
if err = fileproxy.AuthenticatePrincipal(ms, userKeys, userCert); err != nil {
log.Fatalf("fileclient: can't authenticate principal: %s", err)
}
// Create a file.
if err = fileproxy.CreateFile(ms, userCert, sentFileName); err != nil {
log.Fatalln("fileclient: can't create file:", err)
}
// Send File.
if err = fileproxy.WriteFile(ms, userCert, *fileClientFilePath, sentFileName); err != nil {
log.Fatalf("fileclient: couldn't write the file %s to the server: %s", sentFileName, err)
}
// Get file.
outputFileName := sentFileName + ".out"
if err = fileproxy.ReadFile(ms, userCert, *fileClientFilePath, sentFileName, outputFileName); err != nil {
log.Fatalf("fileclient: couldn't get file %s to output file %s: %s", sentFileName, outputFileName, err)
}
// TODO(tmroeder): compare the received file against the sent file.
// Set up a TLS connection to the rollback server, just like the one to
// the file server.
rollbackServerAddr := net.JoinHostPort(*rollbackServerHost, *rollbackServerPort)
rbconn, err := tls.Dial("tcp", rollbackServerAddr, conf)
if err != nil {
log.Fatalf("fileclient: can't establish rollback channel: %s", err)
}
newms := util.NewMessageStream(rbconn)
// Create a fake hash value, and set this value for an item.
hashLen := 32
hash := make([]byte, hashLen)
if _, err := rand.Read(hash); err != nil {
log.Fatalf("fileclient: failed to read a random value for the hash")
}
progName := taoName.String()
resName := "test_resource"
if err := fileproxy.SetHash(newms, resName, hash); err != nil {
log.Fatalf("Couldn't set the hash for program '%s', resource '%s', hash % x on the remote server: %s", progName, resName, hash, err)
}
// Set the counter to 10 and check that we get the same value back.
if err := fileproxy.SetCounter(newms, uint64(10)); err != nil {
log.Fatalf("fileclient: couldn't set the counter in the file client")
}
c, err := fileproxy.GetCounter(newms)
if err != nil {
log.Fatalf("fileclient: couldn't get the value of the counter from the rollback server")
}
// Get the hash verification value.
newHash, err := fileproxy.GetHashedVerifier(newms, resName)
if err != nil {
log.Fatalf("fileclient: couldn't get the hashed verifier from the rollback server")
}
// Try to recompute the hashed verifier directly to see if it matches.
sh := sha256.New()
vi := fileproxy.EncodeCounter(c)
sh.Write(vi)
sh.Write(hash)
sh.Write(vi)
computed := sh.Sum(nil)
if subtle.ConstantTimeCompare(newHash, computed) != 1 {
log.Fatalf("fileclient: the hashed verifier % x returned by the server didn't match the value % x computed locally", newHash, computed)
}
log.Println("All fileclient tests pass")
}
func main() {
caAddr := flag.String("caAddr", "localhost:8124", "The address of the CA for setting up a certificate signed by the policy key")
hostcfg := flag.String("hostconfig", "tao.config", "path to host tao configuration")
serverHost := flag.String("host", "localhost", "address for client/server")
serverPort := flag.String("port", "8129", "port for client/server")
rollbackServerPath := flag.String("rollbackserver_files", "rollbackserver_files", "rollbackserver directory")
country := flag.String("country", "US", "The country for the fileclient certificate")
org := flag.String("organization", "Google", "The organization for the fileclient certificate")
flag.Parse()
serverAddr := net.JoinHostPort(*serverHost, *serverPort)
hostDomain, err := tao.LoadDomain(*hostcfg, nil)
if err != nil {
log.Fatalln("rollbackserver: can't load domain:", err)
}
var policyCert []byte
if hostDomain.Keys.Cert != nil {
policyCert = hostDomain.Keys.Cert.Raw
}
if policyCert == nil {
log.Fatalln("rollbackserver: can't retrieve policy cert")
}
parentTao := tao.Parent()
if err := hostDomain.ExtendTaoName(parentTao); err != nil {
log.Fatalln("fileserver: can't extend the Tao with the policy key")
}
e := auth.PrinExt{Name: "rollbackserver_version_1"}
if err = parentTao.ExtendTaoName(auth.SubPrin{e}); err != nil {
log.Fatalln("rollbackserver: can't extend name")
}
taoName, err := parentTao.GetTaoName()
if err != nil {
return
}
// Create or read the keys for rollbackserver.
rbKeys, err := tao.NewOnDiskTaoSealedKeys(tao.Signing|tao.Crypting, parentTao, *rollbackServerPath, tao.SealPolicyDefault)
if err != nil {
log.Fatalln("rollbackserver: couldn't set up the Tao-sealed keys:", err)
}
// Set up a temporary cert for communication with keyNegoServer.
rbKeys.Cert, err = rbKeys.SigningKey.CreateSelfSignedX509(tao.NewX509Name(&tao.X509Details{
Country: proto.String(*country),
Organization: proto.String(*org),
CommonName: proto.String(taoName.String()),
}))
if err != nil {
log.Fatalln("rollbackserver: couldn't create a self-signed cert for rollbackserver keys:", err)
}
// Contact keyNegoServer for the certificate.
if err := fileproxy.EstablishCert("tcp", *caAddr, rbKeys, hostDomain.Keys.VerifyingKey); err != nil {
log.Fatalf("rollbackserver: couldn't establish a cert signed by the policy key: %s", err)
}
// The symmetric keys aren't used by the rollback server.
progPolicy := fileproxy.NewProgramPolicy(policyCert, taoName.String(), rbKeys, nil, rbKeys.Cert.Raw)
m := fileproxy.NewRollbackMaster(taoName.String())
if err := serve(serverAddr, taoName.String(), policyCert, rbKeys, progPolicy, m); err != nil {
log.Fatalf("rollbackserver: server error: %s\n", err)
}
log.Println("rollbackserver: done")
}
func main() {
domain, err := tao.LoadDomain(*configPath, []byte(*domainPass))
if domain == nil {
log.Printf("domainserver: no domain path - %s, pass - %s, err - %s\n",
*configPath, *domainPass, err)
} else if err != nil {
log.Printf("domainserver: Couldn't load the config path %s: %s\n",
*configPath, err)
}
policyKey, policyCert := domain.Keys, domain.Keys.Cert
if policyCert == nil {
log.Fatalln("Policy cert not found")
}
hostKey, hostAtt := generateAttestation(policyKey, hostName)
programKey, programAtt := generateAttestation(hostKey, programName)
rawEnd1, err := proto.Marshal(hostAtt)
if err != nil {
log.Fatalln("Error serializing attestation.")
}
programAtt.SerializedEndorsements = [][]byte{rawEnd1}
cert, err := domain_service.RequestProgramCert(programAtt, programKey.VerifyingKey,
*network, *addr)
if err != nil {
log.Fatalln("Error:", err)
}
rootCerts := x509.NewCertPool()
rootCerts.AddCert(domain.Keys.Cert)
options := x509.VerifyOptions{Roots: rootCerts}
_, err = cert.Verify(options)
if err != nil {
log.Fatalln("Program cert fails verification check.", err)
}
ver, err := tao.FromX509(cert)
if err != nil {
log.Fatalln("Error getting verifier from Program cert", err)
}
if v := programKey.VerifyingKey; !v.Equals(cert) {
log.Fatalf("Key in Program cert %v differs from expected value %v.", ver, v)
}
// Test Certificate Revocation.
serialNumber := cert.SerialNumber
says := auth.Says{
Speaker: domain.Keys.SigningKey.ToPrincipal(),
Message: auth.Pred{
Name: "revoke",
Arg: []auth.Term{auth.Bytes(serialNumber.Bytes())}}}
att, err := tao.GenerateAttestation(domain.Keys.SigningKey, nil, says)
if err != nil {
log.Fatalln("Error generating attestation for certificate revocation.")
}
err = domain_service.RequestRevokeCertificate(att, *network, *addr)
if err != nil {
log.Fatalln("Error revoking certificate: ", err)
}
crl, err := domain_service.RequestCrl(*network, *addr)
if err != nil {
log.Fatalln("Error getting CRL: ", err)
}
revokedCerts := crl.TBSCertList.RevokedCertificates
if len(revokedCerts) != 1 {
log.Fatalf("Revoked 1 cert and got back CRL with %v revoked certs", len(revokedCerts))
}
if num := revokedCerts[0].SerialNumber.Int64(); num != serialNumber.Int64() {
log.Fatalf("Serial number %v doesnt match expected value %v", num, serialNumber)
}
log.Println("YAY!")
}