(tests) Client Authentication: Tests against boringssl

.travis.yml

@@ -8,8 +8,12 @@ go:
   - 1.10.x
 
 env:
-  - MODE=interop CLIENT=boring SERVER=boring
-  - MODE=interop CLIENT=tstclnt SERVER=tstclnt
+  # CLIAUTH is used for client authentication testing. If string contains letter:
+  # - "C" - tris client will be tested against $SERVER
+  # - "S" - tris server will be tested against $CLIENT
+  # - none of them, client authentication is not tested
+  - MODE=interop CLIENT=boring SERVER=boring CLIAUTH=C      # ClientAuth. CLIENT: tris, SERVER: boringssl
+  - MODE=interop CLIENT=tstclnt SERVER=tstclnt CLIAUTH=NONE
   - MODE=interop CLIENT=picotls ZRTT=1
 # - MODE=interop CLIENT=mint    # does not support draft 22
   - MODE=bogo
@@ -33,7 +37,7 @@ install:
 script:
   - if [ "$MODE" = "interop" ]; then ./_dev/interop.sh RUN $CLIENT; fi
   - if [ "$MODE" = "interop" ] && [ "$ZRTT" = "1" ]; then ./_dev/interop.sh 0-RTT $CLIENT; fi
-  - if [ -n "$SERVER" ]; then ./_dev/interop.sh RUN-CLIENT $SERVER; fi
+  - if [ -n "$SERVER" ]; then ./_dev/interop.sh RUN-CLIENT $SERVER $CLIAUTH; fi
   - if [ "$MODE" = "gotest" ]; then ./_dev/go.sh test -race crypto/tls; fi
   - if [ "$MODE" = "bogo" ]; then ./_dev/bogo.sh; fi
 

_dev/boring/server.sh

@@ -16,4 +16,12 @@ bssl server \
     -tls13-draft22-variant \
     -accept 2443 -loop -www 2>&1 &
 
+# Require client authentication (with ECDSA)
+bssl server \
+    -key ecdsa.pem \
+    -min-version tls1.2 -max-version tls1.3 \
+    -tls13-draft22-variant \
+    -accept 6443 -loop -www \
+    -require-any-client-cert -debug 2>&1 &
+
 wait

_dev/interop.sh

@@ -22,6 +22,8 @@ elif [ "$1" = "RUN" ]; then
 		grep "Hello TLS 1.3" output.txt | grep -v "resumed" | grep -v "0-RTT"
 		grep "Hello TLS 1.3" output.txt | grep "resumed" | grep -v "0-RTT"
 
+
+
 elif [ "$1" = "0-RTT" ]; then
 		# 0-RTT <client>
 		IP=$(docker inspect -f '{{ .NetworkSettings.IPAddress }}' tris-localserver)
@@ -46,13 +48,18 @@ elif [ "$1" = "RUN-CLIENT" ]; then
 		servername="$2-localserver"
 		docker run --rm --detach --name "$servername" \
 			--entrypoint /server.sh \
-			--expose 1443 --expose 2443 \
+			--expose 1443 --expose 2443 --expose 6443 \
 			tls-tris:$2
 		IP=$(docker inspect -f '{{ .NetworkSettings.IPAddress }}' "$servername")
 		# Obtain information and stop server on exit
 		trap 'docker ps -a; docker logs "$servername"; docker kill "$servername"' EXIT
 
-		docker run --rm tris-testclient -ecdsa=false $IP:1443 # RSA
-		docker run --rm tris-testclient -rsa=false $IP:2443 # ECDSA
+		# RSA
+		docker run --rm tris-testclient -ecdsa=false $IP:1443
+		# ECDSA
+		docker run --rm tris-testclient -rsa=false $IP:2443
+		# Test client authentication if requested
+		[[ $3 =~ .*C.* ]] && docker run --rm tris-testclient -rsa=false -cliauth $IP:6443
+
 		# TODO maybe check server logs for expected output?
 fi

_dev/tris-testclient/client.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"crypto/tls"
+	"crypto/x509"
 	"flag"
 	"fmt"
 	"io"
@@ -27,8 +28,10 @@ var cipherSuiteIdToName = map[uint16]string{
 }
 
 type Client struct {
-	KeyLogWriter io.Writer
-	failed       uint
+	KeyLogWriter 	io.Writer
+	failed       	uint
+	client_cert     tls.Certificate
+	client_certpool *x509.CertPool
 }
 
 func (c *Client) run(addr string, version, cipherSuite uint16) {
@@ -39,6 +42,8 @@ func (c *Client) run(addr string, version, cipherSuite uint16) {
 		MaxVersion:         version,
 		CipherSuites:       []uint16{cipherSuite},
 		KeyLogWriter:       c.KeyLogWriter,
+		Certificates:       []tls.Certificate{c.client_cert},
+		RootCAs:            c.client_certpool,
 	}
 	con, err := tls.Dial("tcp", addr, tls_config)
 	if err != nil {
@@ -71,10 +76,12 @@ func (c *Client) run(addr string, version, cipherSuite uint16) {
 
 func main() {
 	var keylog_file string
-	var enable_rsa, enable_ecdsa bool
+	var enable_rsa, enable_ecdsa, client_auth bool
+
 	flag.StringVar(&keylog_file, "keylogfile", "", "Secrets will be logged here")
 	flag.BoolVar(&enable_rsa, "rsa", true, "Whether to enable RSA cipher suites")
 	flag.BoolVar(&enable_ecdsa, "ecdsa", true, "Whether to enable ECDSA cipher suites")
+	flag.BoolVar(&client_auth, "cliauth", false, "Whether to enable client authentication")
 	flag.Parse()
 	if flag.NArg() != 1 {
 		flag.Usage()
@@ -98,6 +105,19 @@ func main() {
 		log.Println("Enabled keylog")
 	}
 
+	if client_auth {
+		var err error
+		client.client_cert, err = tls.X509KeyPair([]byte(client_crt), []byte(client_key))
+		if err != nil {
+			panic("Can't load client certificate")
+		}
+
+		client.client_certpool = x509.NewCertPool()
+		if !client.client_certpool.AppendCertsFromPEM([]byte(client_ca)) {
+			panic("Can't load client CA cert")
+		}
+	}
+
 	if enable_rsa {
 		// Sanity check: TLS 1.2 with the mandatory cipher suite from RFC 5246
 		client.run(addr, tls.VersionTLS12, tls.TLS_RSA_WITH_AES_128_CBC_SHA)
@@ -107,11 +127,11 @@ func main() {
 		client.run(addr, tls.VersionTLS12, tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256)
 	}
 
+
 	client.run(addr, tls.VersionTLS13, tls.TLS_CHACHA20_POLY1305_SHA256)
 	client.run(addr, tls.VersionTLS13, tls.TLS_AES_128_GCM_SHA256)
 	client.run(addr, tls.VersionTLS13, tls.TLS_AES_256_GCM_SHA384)
 
-	// TODO test with client cert
 	// TODO test other kex methods besides X25519, like MTI secp256r1
 	// TODO limit supported groups?
 
@@ -121,3 +141,88 @@ func main() {
 		fmt.Println("All handshakes passed")
 	}
 }
+
+const (
+	client_ca = `-----BEGIN CERTIFICATE-----
+MIIFYDCCA0igAwIBAgIJAPpBgIvtQb1EMA0GCSqGSIb3DQEBCwUAMEUxCzAJBgNV
+BAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX
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+PNfNkaE1tfkpSGYsuT1DPxX8aAT4JLUfZ1Si6iO+E0Sj9LXA
+-----END CERTIFICATE-----`
+	client_crt = `-----BEGIN CERTIFICATE-----
+MIID/jCCAeYCAQEwDQYJKoZIhvcNAQELBQAwRTELMAkGA1UEBhMCQVUxEzARBgNV
+BAgMClNvbWUtU3RhdGUxITAfBgNVBAoMGEludGVybmV0IFdpZGdpdHMgUHR5IEx0
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+3lV+HDsj7k+AJjHiu1F4O+sp
+-----END CERTIFICATE-----`
+	client_key = `-----BEGIN RSA PRIVATE KEY-----
+MIIEpAIBAAKCAQEAw9ZYu/9+UAv0+hQAkm7HdFpSJruNousPesH54AHxIG8+SKfi
+ANqyfBuSzR02GAqa/S5ZoWOs5rKB4AJH3+l8FJ2WnrV9NVJhj+Ag+A91LppEdbim
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+2rjfqabVMZMLZ2XEbA4W5JTfaZS4YYGcrjY7+i7OsnSxoYG2sb+xlQ==
+-----END RSA PRIVATE KEY-----`
+)