implement the Iris Crypto Library for Request Authentication and Verification. With Examples and Tests.

Relative to this one as well: https://github.com/kataras/iris/issues/1200


Former-commit-id: 3a29e7398b7fdeb9b48a118b742d419d5681d56b

crypto/sign/sign_test.go

@@ -0,0 +1,74 @@
+package sign
+
+import (
+	"reflect"
+	"testing"
+)
+
+var (
+	testPrivateKey = MustGenerateKey()
+	testPublicKey  = &testPrivateKey.PublicKey
+)
+
+func TestGenerateKey(t *testing.T) {
+	privateKeyB, err := marshalPrivateKey(testPrivateKey)
+	if err != nil {
+		t.Fatalf("private key: %v", err)
+	}
+	publicKeyB, err := marshalPublicKey(testPublicKey)
+	if err != nil {
+		t.Fatalf("public key: %v", err)
+	}
+
+	t.Logf("%s", privateKeyB)
+	t.Logf("%s", publicKeyB)
+
+	privateKeyParsed, err := ParsePrivateKey(privateKeyB)
+	if err != nil {
+		t.Fatalf("private key: %v", err)
+	}
+
+	publicKeyParsed, err := ParsePublicKey(publicKeyB)
+	if err != nil {
+		t.Fatalf("public key: %v", err)
+	}
+
+	if !reflect.DeepEqual(testPrivateKey, privateKeyParsed) {
+		t.Fatalf("expected private key to be:\n%#+v\nbut got:\n%#+v", testPrivateKey, privateKeyParsed)
+	}
+	if !reflect.DeepEqual(testPublicKey, publicKeyParsed) {
+		t.Fatalf("expected public key to be:\n%#+v\nbut got:\n%#+v", testPublicKey, publicKeyParsed)
+	}
+}
+
+func TestSignAndVerify(t *testing.T) {
+	tests := []struct {
+		payload []byte
+	}{
+		{[]byte("test my content 1")},
+		{[]byte("test my content 2")},
+	}
+
+	for i, tt := range tests {
+		sig, err := Sign(testPrivateKey, tt.payload)
+		if err != nil {
+			t.Fatalf("[%d] sign error: %v", i, err)
+		}
+
+		ok, err := Verify(testPublicKey, sig, tt.payload)
+		if err != nil {
+			t.Fatalf("[%d] verify error: %v", i, err)
+		}
+		if !ok {
+			t.Fatalf("[%d] verification failed for '%s'", i, tt.payload)
+		}
+
+		// test with other, invalid public key, should fail to verify.
+		tempPublicKey := &MustGenerateKey().PublicKey
+
+		ok, err = Verify(tempPublicKey, sig, tt.payload)
+		if ok {
+			t.Fatalf("[%d] verification should fail but passed for '%s'", i, tt.payload)
+		}
+	}
+}