diff --git a/crypto/proton_test.go b/crypto/proton_test.go
new file mode 100644
index 00000000..12d20c9c
--- /dev/null
+++ b/crypto/proton_test.go
@@ -0,0 +1,68 @@
+package crypto
+
+import (
+	"encoding/base64"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestForwardeeDecryption(t *testing.T) {
+	pgp.latestServerTime = 1679044110
+	defer func() {
+		pgp.latestServerTime = testTime
+	}()
+
+	forwardeeKey, err := NewKeyFromArmored(readTestFile("key_forwardee", false))
+	if err != nil {
+		t.Fatal("Expected no error while unarmoring private keyring, got:", err)
+	}
+
+	forwardeeKeyRing, err := NewKeyRing(forwardeeKey)
+	if err != nil {
+		t.Fatal("Expected no error while building private keyring, got:", err)
+	}
+
+	pgpMessage, err := NewPGPMessageFromArmored(readTestFile("message_forwardee", false))
+	if err != nil {
+		t.Fatal("Expected no error while reading ciphertext, got:", err)
+	}
+
+	plainMessage, err := forwardeeKeyRing.Decrypt(pgpMessage, nil, 0)
+	if err != nil {
+		t.Fatal("Expected no error while decrypting/verifying, got:", err)
+	}
+
+	assert.Exactly(t, "Message for Bob", plainMessage.GetString())
+}
+
+func TestSymmetricKeys(t *testing.T) {
+	pgp.latestServerTime = 1679044110
+	defer func() {
+		pgp.latestServerTime = testTime
+	}()
+
+	symmetricKey, err := NewKeyFromArmored(readTestFile("key_symmetric", false))
+	if err != nil {
+		t.Fatal("Expected no error while unarmoring private keyring, got:", err)
+	}
+
+	symmetricKeyRing, err := NewKeyRing(symmetricKey)
+	if err != nil {
+		t.Fatal("Expected no error while building private keyring, got:", err)
+	}
+
+	binData, _ := base64.StdEncoding.DecodeString("ExXmnSiQ2QCey20YLH6qlLhkY3xnIBC1AwlIXwK/HvY=")
+	var message = NewPlainMessage(binData)
+
+	ciphertext, err := symmetricKeyRing.Encrypt(message, nil)
+	if err != nil {
+		t.Fatal("Expected no error when encrypting, got:", err)
+	}
+
+	decrypted, err := symmetricKeyRing.Decrypt(ciphertext, nil, 0)
+	if err != nil {
+		t.Fatal("Expected no error when decrypting, got:", err)
+	}
+	assert.Exactly(t, message.GetBinary(), decrypted.GetBinary())
+}
diff --git a/crypto/testdata/key_forwardee b/crypto/testdata/key_forwardee
new file mode 100644
index 00000000..adf82ad1
--- /dev/null
+++ b/crypto/testdata/key_forwardee
@@ -0,0 +1,15 @@
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+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+=lESj
+-----END PGP PRIVATE KEY BLOCK-----
\ No newline at end of file
diff --git a/crypto/testdata/key_symmetric b/crypto/testdata/key_symmetric
new file mode 100644
index 00000000..98f702f2
--- /dev/null
+++ b/crypto/testdata/key_symmetric
@@ -0,0 +1,15 @@
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+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+=8TxH
+-----END PGP PRIVATE KEY BLOCK-----
\ No newline at end of file
diff --git a/crypto/testdata/message_forwardee b/crypto/testdata/message_forwardee
new file mode 100644
index 00000000..cd44ecf1
--- /dev/null
+++ b/crypto/testdata/message_forwardee
@@ -0,0 +1,8 @@
+-----BEGIN PGP MESSAGE-----
+
+wV4DB27Wn97eACkSAQdA62TlMU2QoGmf5iBLnIm4dlFRkLIg+6MbaatghwxK+Ccw
+yGZuVVMAK/ypFfebDf4D/rlEw3cysv213m8aoK8nAUO8xQX3XQq3Sg+EGm0BNV8E
+0kABEPyCWARoo5klT1rHPEhelnz8+RQXiOIX3G685XCWdCmaV+tzW082D0xGXSlC
+7lM8r1DumNnO8srssko2qIja
+=pVRa
+-----END PGP MESSAGE-----
\ No newline at end of file
diff --git a/go.mod b/go.mod
index 9af37a7d..711ee28e 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/ProtonMail/gopenpgp/v2
 go 1.15
 
 require (
-	github.com/ProtonMail/go-crypto v0.0.0-20230619152218-624a5dca36ef
+	github.com/ProtonMail/go-crypto v0.0.0-20230717121622-edf196117233
 	github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pkg/errors v0.9.1
diff --git a/go.sum b/go.sum
index cc143130..ba450a4e 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/ProtonMail/go-crypto v0.0.0-20230619152218-624a5dca36ef h1:kCUm5qsdBBGht43OWgp/gxVIT8jzDjHD3ErHbQ7HoAc=
-github.com/ProtonMail/go-crypto v0.0.0-20230619152218-624a5dca36ef/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
+github.com/ProtonMail/go-crypto v0.0.0-20230717121622-edf196117233 h1:bdoKdh0f66/lrgVfYlxw0aqISY/KOqXmFJyGt7rGmnc=
+github.com/ProtonMail/go-crypto v0.0.0-20230717121622-edf196117233/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f h1:tCbYj7/299ekTTXpdwKYF8eBlsYsDVoggDAuAjoK66k=
 github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f/go.mod h1:gcr0kNtGBqin9zDW9GOHcVntrwnjrK+qdJ06mWYBybw=
 github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=