test: Add tests for decryption with singing key

ProtonMail · Nov 20, 2024 · 788cec1 · 788cec1
1 parent 25c09e6
commit 788cec1
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diff --git a/openpgp/v2/read_test.go b/openpgp/v2/read_test.go
@@ -1023,3 +1023,41 @@ func testMalformedMessage(t *testing.T, keyring EntityList, message string) {
 		return
 	}
 }
+
+func TestReadMessageWithSignOnly(t *testing.T) {
+	config := packet.Config{
+		InsecureAllowDecryptionWithSigningKeys: true,
+	}
+	key, err := ReadArmoredKeyRing(strings.NewReader(rsaSignOnly))
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	// Success
+	msgReader, err := armor.Decode(strings.NewReader(armoredMessageRsaSignOnly))
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	md, err := ReadMessage(msgReader.Body, key, nil, &config)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	_, err = io.ReadAll(md.UnverifiedBody)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	// Fail
+	msgReader, err = armor.Decode(strings.NewReader(armoredMessageRsaSignOnly))
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	md, err = ReadMessage(msgReader.Body, key, nil, nil)
+	if err == nil {
+		t.Fatal("Should not decrypt")
+	}
+}
diff --git a/openpgp/v2/read_write_test_data.go b/openpgp/v2/read_write_test_data.go
@@ -740,3 +740,51 @@ NVniEke6hM3CNBXYPAMhQBMWhCulcoz+0lxi8L34rMN+Dsbma96psdUrn7uLaB91
 xqAY9Bwizt4FWgXuLm1a4+So4V9j1TRCXd12Uc2l2RNmgDE=
 =miES
 -----END PGP PRIVATE KEY BLOCK-----`
+
+const rsaSignOnly = `-----BEGIN PGP PRIVATE KEY BLOCK-----
+
+xcLYBF9Gl+MBCACc09O3gjyO0B1ledGxGFSUpPmhhJzkxKoY1WDX8VlASCHz
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++Px7nSU1+ftJ9bC2bnRR0Upop+3UkPeCBVp4tYAhsNnPXhSWC0gCgeGU7EmW
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+jQQQAQgAIAUCX0aX4wYLCQcIAwIEFQgKAgQWAgEAAhkBAhsDAh4BACEJEAr9
+x5ZY6oZmFiEEm+B7p+lshgEOwGGZCv3HlljqhmaUWgf/efmGSpOKIGQ3Kh32
+HUqn/4ARvUmqMtZz4xUA9P3GAPY8XwJf00jSQlAo4//3aA1eEOJFHCr2qzCk
+/4gIoZEScTTZp4itfL/Fer3UX+bV/VeTNgZGi+MRylSDQxLRQNpRgu+FmRAi
+E6fr8D8GMvEcGb0jTRgWGj1EVtfOHfDg+EyPrtw+Z8u/bErUJ+Fnxz+KOGSN
+SBQVAOflUYFoQhUNgZiq1s8WFD55sfes3UdBwsmHquDtYGo9dvWLJXxTEF8q
+QCyKHYdk25ShIlNpRUqOH3CHqY/38z7QeV7INwtZaQvoES08RlD6ZMtczYLj
+BZou86lozq7ISvRg1RSIWZ0ZRA==
+=A9Ts
+-----END PGP PRIVATE KEY BLOCK-----
+`
+
+const armoredMessageRsaSignOnly = `-----BEGIN PGP MESSAGE-----
+
+wcBMAwr9x5ZY6oZmAQf+Lxghg4keIFpEq8a65gFkIfW+chHTDPlfI8xnx6U9
+HdsICX3Oye5V0ToCVKkEWDxfN1yCfXiYalSNo7ScRZKR7C+j02/pC+FfR6AJ
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+2TojxdNoouhnMm+gloCE1n8huY1vw5F78/uiHen0tmHQ0dxtfk8cc1burgl/
+zUdJ3Sg6Eu+OC2ae5II63iB5fG+lCwZtfuepWnePDv8RDKNHCVP/LoBNpGOZ
+U9I6AUkZWdcsueib9ghKDDy+HbUbf2kCJWUnuyeOCKqQifDb8bsLmdQY4Wb6
+EBeLgD8oZHVsH3NLjPakPw==
+=STqy
+-----END PGP MESSAGE-----`