Initial

internal/crypto/keys_test.go

@@ -0,0 +1,44 @@
+package appcrypto
+
+import "testing"
+
+func TestSignAndVerifyWithPEM(t *testing.T) {
+	privatePEM, err := UstvariZasebniKljucECDSAP256PEM()
+	if err != nil {
+		t.Fatalf("generate key: %v", err)
+	}
+
+	message := []byte("hello world")
+	signature, err := PodpisiSporociloSPEM(privatePEM, message)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+
+	ok, err := PreveriPodpisSPEM(privatePEM, message, signature)
+	if err != nil {
+		t.Fatalf("verify error: %v", err)
+	}
+	if !ok {
+		t.Fatalf("expected valid signature")
+	}
+}
+
+func TestVerifyFailsForDifferentMessage(t *testing.T) {
+	privatePEM, err := UstvariZasebniKljucECDSAP256PEM()
+	if err != nil {
+		t.Fatalf("generate key: %v", err)
+	}
+
+	signature, err := PodpisiSporociloSPEM(privatePEM, []byte("a"))
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+
+	ok, err := PreveriPodpisSPEM(privatePEM, []byte("b"), signature)
+	if err != nil {
+		t.Fatalf("verify error: %v", err)
+	}
+	if ok {
+		t.Fatalf("expected signature to fail")
+	}
+}