1 files changed, 2 insertions, 34 deletions
diff --git a/java/com/android/dialer/notification/VoicemailChannelUtils.java b/java/com/android/dialer/notification/VoicemailChannelUtils.java
index 83bda0f18..ddc0f773c 100644
--- a/java/com/android/dialer/notification/VoicemailChannelUtils.java
+++ b/java/com/android/dialer/notification/VoicemailChannelUtils.java
@@ -16,8 +16,6 @@
 
 package com.android.dialer.notification;
 
-import static java.nio.charset.StandardCharsets.UTF_8;
-
 import android.Manifest.permission;
 import android.annotation.TargetApi;
 import android.app.NotificationChannel;
@@ -40,35 +38,15 @@ import android.util.ArraySet;
 import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
 import com.android.dialer.util.PermissionsUtil;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 
 /** Utilities for working with voicemail channels. */
 @TargetApi(VERSION_CODES.O)
-public final class VoicemailChannelUtils {
+/* package */ final class VoicemailChannelUtils {
   @VisibleForTesting static final String GLOBAL_VOICEMAIL_CHANNEL_ID = "phone_voicemail";
   private static final String PER_ACCOUNT_VOICEMAIL_CHANNEL_ID_PREFIX = "phone_voicemail_account_";
-  private static final char[] hexDigits = "0123456789abcdef".toCharArray();
-
-  /**
-   * Returns a String representation of the hashed value of the PhoneAccountHandle's id (the
-   * Sim ICC ID).
-   * In case it fails to hash the id it will return an empty string.
-   */
-  public static String getHashedPhoneAccountId(@NonNull PhoneAccountHandle handle) {
-    byte[] handleBytes = handle.getId().getBytes(UTF_8);
-    try {
-      byte[] hashedBytes = MessageDigest.getInstance("SHA-256").digest(handleBytes);
-      return byteArrayToHexString(hashedBytes);
-    } catch (NoSuchAlgorithmException e) {
-      LogUtil.e("VoicemailChannelUtils.getHashedPhoneAccountId",
-          "NoSuchAlgorithmException throw! Returning empty string!");
-      return "";
-    }
-  }
 
   @SuppressWarnings("MissingPermission") // isSingleSimDevice() returns true if no permission
   static Set<String> getAllChannelIds(@NonNull Context context) {
@@ -146,17 +124,7 @@ public final class VoicemailChannelUtils {
 
   private static String getChannelIdForAccount(@NonNull PhoneAccountHandle handle) {
     Assert.isNotNull(handle);
-    return PER_ACCOUNT_VOICEMAIL_CHANNEL_ID_PREFIX
-        + ":"
-        + getHashedPhoneAccountId(handle);
-  }
-
-  private static String byteArrayToHexString(byte[] bytes) {
-    StringBuilder sb = new StringBuilder(2 * bytes.length);
-    for (byte b : bytes) {
-      sb.append(hexDigits[(b >> 4) & 0xf]).append(hexDigits[b & 0xf]);
-    }
-    return sb.toString();
+    return PER_ACCOUNT_VOICEMAIL_CHANNEL_ID_PREFIX + ":" + handle.getId();
   }
 
   /**