Add OP_AUTH_NEEDED KeyStore result code

OP_AUTH_NEEDED will be returned from begin when an operation needs
a per operation authentication before calling update. Note that the
begin call succeeds when this error is returned, the token and handle
are valid.

(cherry picked from commit dabe520a3e6b0d0c40adfd748483fa336c43c366)

Change-Id: I0ba4e997360843b5eb6c1db9c5fcd1c4d5a2c717

1 files changed, 8 insertions, 0 deletions

diff --git a/keystore/java/android/security/KeyStore.java b/keystore/java/android/security/KeyStore.java
index 8c49ff0..5d863c2 100644
--- a/keystore/java/android/security/KeyStore.java
+++ b/keystore/java/android/security/KeyStore.java
@@ -53,6 +53,14 @@ public class KeyStore {
     public static final int UNDEFINED_ACTION = 9;
     public static final int WRONG_PASSWORD = 10;
 
+    /**
+     * Per operation authentication is needed before this operation is valid.
+     * This is returned from {@link #begin} when begin succeeds but the operation uses
+     * per-operation authentication and must authenticate before calling {@link #update} or
+     * {@link #finish}.
+     */
+    public static final int OP_AUTH_NEEDED = 15;
+
     // Used for UID field to indicate the calling UID.
     public static final int UID_SELF = -1;