Add decompiled APK source code (JADX)

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- Full Java source code
- Smali files
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

decompiled/sources/com/firemonkeys/cloudcellapi/util/Security.java

@@ -0,0 +1,70 @@
+package com.firemonkeys.cloudcellapi.util;
+
+import android.text.TextUtils;
+import android.util.Log;
+import java.security.InvalidKeyException;
+import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
+import java.security.PublicKey;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.X509EncodedKeySpec;
+
+/* loaded from: classes2.dex */
+public class Security {
+    private static final String KEY_FACTORY_ALGORITHM = "RSA";
+    private static final String SIGNATURE_ALGORITHM = "SHA1withRSA";
+    private static final String TAG = "IABUtil/Security";
+
+    public static boolean verifyPurchase(String str, String str2, String str3) {
+        if (str2 == null) {
+            Log.e(TAG, "data is null");
+            return false;
+        }
+        if (TextUtils.isEmpty(str3) || verify(generatePublicKey(str), str2, str3)) {
+            return true;
+        }
+        Log.w(TAG, "signature does not match data.");
+        return false;
+    }
+
+    public static PublicKey generatePublicKey(String str) {
+        try {
+            return KeyFactory.getInstance(KEY_FACTORY_ALGORITHM).generatePublic(new X509EncodedKeySpec(Base64.decode(str)));
+        } catch (Base64DecoderException e) {
+            Log.e(TAG, "Base64 decoding failed.");
+            throw new IllegalArgumentException(e);
+        } catch (NoSuchAlgorithmException e2) {
+            throw new RuntimeException(e2);
+        } catch (InvalidKeySpecException e3) {
+            Log.e(TAG, "Invalid key specification.");
+            throw new IllegalArgumentException(e3);
+        }
+    }
+
+    public static boolean verify(PublicKey publicKey, String str, String str2) {
+        try {
+            Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
+            signature.initVerify(publicKey);
+            signature.update(str.getBytes());
+            if (signature.verify(Base64.decode(str2))) {
+                return true;
+            }
+            Log.e(TAG, "Signature verification failed.");
+            return false;
+        } catch (Base64DecoderException unused) {
+            Log.e(TAG, "Base64 decoding failed.");
+            return false;
+        } catch (InvalidKeyException unused2) {
+            Log.e(TAG, "Invalid key specification.");
+            return false;
+        } catch (NoSuchAlgorithmException unused3) {
+            Log.e(TAG, "NoSuchAlgorithmException.");
+            return false;
+        } catch (SignatureException unused4) {
+            Log.e(TAG, "Signature exception.");
+            return false;
+        }
+    }
+}