diff --git a/src/com/android/settings/password/ChooseLockPassword.java b/src/com/android/settings/password/ChooseLockPassword.java
index deab9f2f9a7..4c229c6a61a 100644
--- a/src/com/android/settings/password/ChooseLockPassword.java
+++ b/src/com/android/settings/password/ChooseLockPassword.java
@@ -705,18 +705,17 @@ public class ChooseLockPassword extends SettingsActivity {
 
         /**
          * Validates PIN/Password and returns the validation result and updates mValidationErrors
-         * and mPasswordReused to reflect validation results.
+         * to reflect validation results.
          *
          * @param credential credential the user typed in.
          * @return whether password satisfies all the requirements.
          */
         @VisibleForTesting
         boolean validatePassword(LockscreenCredential credential) {
-            final byte[] password = credential.getCredential();
-            mValidationErrors = PasswordMetrics.validatePassword(
-                    mMinMetrics, mMinComplexity, !mIsAlphaMode, password);
-            if (mValidationErrors.isEmpty() &&  mLockPatternUtils.checkPasswordHistory(
-                        password, getPasswordHistoryHashFactor(), mUserId)) {
+            mValidationErrors = PasswordMetrics.validateCredential(mMinMetrics, mMinComplexity,
+                    credential);
+            if (mValidationErrors.isEmpty() && mLockPatternUtils.checkPasswordHistory(
+                        credential.getCredential(), getPasswordHistoryHashFactor(), mUserId)) {
                 mValidationErrors =
                         Collections.singletonList(new PasswordValidationError(RECENTLY_USED));
             }
@@ -893,8 +892,8 @@ public class ChooseLockPassword extends SettingsActivity {
             final boolean canInput = mSaveAndFinishWorker == null;
 
             LockscreenCredential password = mIsAlphaMode
-                    ? LockscreenCredential.createPasswordOrNone(mPasswordEntry.getText())
-                    : LockscreenCredential.createPinOrNone(mPasswordEntry.getText());
+                    ? LockscreenCredential.createPassword(mPasswordEntry.getText())
+                    : LockscreenCredential.createPin(mPasswordEntry.getText());
             final int length = password.size();
             if (mUiStage == Stage.Introduction) {
                 mPasswordRestrictionView.setVisibility(View.VISIBLE);
diff --git a/tests/robotests/src/com/android/settings/password/ChooseLockPasswordTest.java b/tests/robotests/src/com/android/settings/password/ChooseLockPasswordTest.java
index 3fe332246c3..d3c09d013f9 100644
--- a/tests/robotests/src/com/android/settings/password/ChooseLockPasswordTest.java
+++ b/tests/robotests/src/com/android/settings/password/ChooseLockPasswordTest.java
@@ -184,6 +184,24 @@ public class ChooseLockPasswordTest {
         assertThat(flags & FLAG_SECURE).isEqualTo(FLAG_SECURE);
     }
 
+    @Test
+    public void processAndValidatePasswordRequirements_cannotIncludeInvalidChar() {
+        PasswordPolicy policy = new PasswordPolicy();
+        policy.quality = PASSWORD_QUALITY_UNSPECIFIED;
+        // Only ASCII 31–127 should be allowed.  The invalid character error should also take
+        // priority over the error that says the password is too short.
+        String[] passwords = new String[] { "§µ¿¶¥£", "™™™™", "\n\n\n\n", "¡", "é" };
+
+        for (String password : passwords) {
+            assertPasswordValidationResult(
+                    /* minMetrics */ policy.getMinMetrics(),
+                    /* minComplexity= */ PASSWORD_COMPLEXITY_NONE,
+                    /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
+                    /* userEnteredPassword= */ LockscreenCredential.createPassword(password),
+                    "This can't include an invalid character");
+        }
+    }
+
     @Test
     public void processAndValidatePasswordRequirements_noMinPasswordComplexity() {
         PasswordPolicy policy = new PasswordPolicy();
@@ -194,7 +212,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_NONE,
                 /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPassword(""),
                 "Must contain at least 1 non-numerical character",
                 "Must be at least 10 characters");
     }
@@ -208,7 +226,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_HIGH,
                 /* passwordType= */ PASSWORD_QUALITY_NUMERIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPin(""),
                 "PIN must be at least 8 digits");
     }
 
@@ -221,7 +239,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_MEDIUM,
                 /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPassword(""),
                 "Must be at least 4 characters");
     }
 
@@ -235,7 +253,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_LOW,
                 /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPassword(""),
                 "Must contain at least 1 non-numerical character",
                 "Must contain at least 1 numerical digit",
                 "Must be at least 9 characters");
@@ -251,7 +269,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_MEDIUM,
                 /* passwordType= */ PASSWORD_QUALITY_NUMERIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPin(""),
                 "PIN must be at least 11 digits");
     }
 
@@ -265,7 +283,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_HIGH,
                 /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPassword(""),
                 "Must contain at least 2 special symbols",
                 "Must be at least 6 characters",
                 "Must contain at least 1 letter",
@@ -351,7 +369,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ policy.getMinMetrics(),
                 /* minComplexity= */ PASSWORD_COMPLEXITY_HIGH,
                 /* passwordType= */ PASSWORD_QUALITY_ALPHABETIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPassword(""),
                 "Must be at least 6 characters",
                 "If using only numbers, must be at least 8 digits");
     }
@@ -448,7 +466,7 @@ public class ChooseLockPasswordTest {
                 /* minMetrics */ null,
                 /* minComplexity= */ PASSWORD_COMPLEXITY_HIGH,
                 /* passwordType= */ PASSWORD_QUALITY_NUMERIC,
-                /* userEnteredPassword= */ LockscreenCredential.createNone(),
+                /* userEnteredPassword= */ LockscreenCredential.createPin(""),
                 "PIN must be at least 8 digits");
     }