From bdfe17606f77fa22300057ed212c9e9a8a57e10e Mon Sep 17 00:00:00 2001
From: Stelian Pop <stelian@popies.net>
Date: Wed, 14 Apr 2021 18:05:34 +0200
Subject: [PATCH] Fix ACTIVATE FILE when APDU is received over a logical
 channel.

---
 src/fr/anssi/smartpgp/Constants.java      | 1 +
 src/fr/anssi/smartpgp/SmartPGPApplet.java | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/fr/anssi/smartpgp/Constants.java b/src/fr/anssi/smartpgp/Constants.java
index 2c4c57f..9887a50 100644
--- a/src/fr/anssi/smartpgp/Constants.java
+++ b/src/fr/anssi/smartpgp/Constants.java
@@ -112,6 +112,7 @@ public final class Constants {
     protected static final byte CRT_TAG_DECRYPTION_KEY = (byte)0xb8;
 
     protected static final byte CLA_MASK_CHAINING = (byte)0x10;
+    protected static final byte CLA_MASK_CHANNEL = (byte)0xFC;
 
 
     protected static final byte INS_SELECT_DATA = (byte)0xA5;
diff --git a/src/fr/anssi/smartpgp/SmartPGPApplet.java b/src/fr/anssi/smartpgp/SmartPGPApplet.java
index e1da35a..1a17103 100644
--- a/src/fr/anssi/smartpgp/SmartPGPApplet.java
+++ b/src/fr/anssi/smartpgp/SmartPGPApplet.java
@@ -1460,7 +1460,7 @@ public final class SmartPGPApplet extends Applet {
         }
 
         if(data.isTerminated) {
-            if(apdubuf[ISO7816.OFFSET_CLA] != 0) {
+            if((apdubuf[ISO7816.OFFSET_CLA] & Constants.CLA_MASK_CHANNEL) != 0) {
                 ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
                 return;
             }