Remove reference to factory reset of K
The ISharedSecret.aidl description of the pre-shared secret K
mentioned that K was set up during factory reset. While that could be
done, it is almost never done; most OEMs inject K in the factory.
Removed the reference to setup in factory reset to reduce confusion.
Test: N/A, comment-only change
Change-Id: Idbbd5a8d64197ef4713a75075a9730d06162ad05
diff --git a/security/sharedsecret/aidl/android/hardware/security/sharedsecret/ISharedSecret.aidl b/security/sharedsecret/aidl/android/hardware/security/sharedsecret/ISharedSecret.aidl
index eca8d87..b0dd284 100644
--- a/security/sharedsecret/aidl/android/hardware/security/sharedsecret/ISharedSecret.aidl
+++ b/security/sharedsecret/aidl/android/hardware/security/sharedsecret/ISharedSecret.aidl
@@ -81,14 +81,9 @@
* defined in the standard. The counter is prefixed and length L appended, as shown
* in the construction on page 12 of the standard. The label string is UTF-8 encoded.
*
- * ``K'' is a pre-established shared secret, set up during factory reset. The mechanism for
- * establishing this shared secret is implementation-defined.Any method of securely
- * establishing K that ensures that an attacker cannot obtain or derive its value is
- * acceptable.
- *
- * CRITICAL SECURITY REQUIREMENT: All keys created by a IKeymintDevice instance must
- * be cryptographically bound to the value of K, such that establishing a new K
- * permanently destroys them.
+ * ``K'' is a pre-established shared secret. The mechanism for establishing this shared
+ * secret is implementation-defined. Any method of securely establishing K that
+ * ensures that an attacker cannot obtain or derive its value is acceptable.
*
* ``||'' represents concatenation.
*