keystore2/aidl/aidl_api/android.system.keystore2/current/android/system/keystore2/IKeystoreOperation.aidl

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package android.system.keystore2;
@VintfStability
interface IKeystoreOperation {
  void updateAad(in byte[] aadInput);
  @nullable byte[] update(in byte[] input);
  @nullable byte[] finish(in @nullable byte[] input, in @nullable byte[] signature);
  void abort();
}