piv: allow PIN verification by exposing VerifyPIN

piv/piv.go

@@ -216,15 +216,15 @@ func encodePIN(pin string) ([]byte, error) {
 	return data, nil
 }
 
-// authPIN attempts to authenticate against the card with the provided PIN.
+// VerifyPIN attempts to authenticate against the card with the provided PIN.
 // The PIN is required to use and modify certain slots.
 //
 // After a specific number of authentication attemps with an invalid PIN,
 // usually 3, the PIN will become block and refuse further attempts. At that
 // point the PUK must be used to unblock the PIN.
 //
 // Use DefaultPIN if the PIN hasn't been set.
-func (yk *YubiKey) authPIN(pin string) error {
+func (yk *YubiKey) VerifyPIN(pin string) error {
 	return ykLogin(yk.tx, pin)
 }
 

piv/piv_test.go

@@ -190,7 +190,7 @@ func TestYubiKeyReset(t *testing.T) {
 	if err := yk.Reset(); err != nil {
 		t.Fatalf("resetting yubikey: %v", err)
 	}
-	if err := yk.authPIN(DefaultPIN); err != nil {
+	if err := yk.VerifyPIN(DefaultPIN); err != nil {
 		t.Fatalf("login: %v", err)
 	}
 }
@@ -199,7 +199,7 @@ func TestYubiKeyLogin(t *testing.T) {
 	yk, close := newTestYubiKey(t)
 	defer close()
 
-	if err := yk.authPIN(DefaultPIN); err != nil {
+	if err := yk.VerifyPIN(DefaultPIN); err != nil {
 		t.Fatalf("login: %v", err)
 	}
 }