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  1. JDK
  2. JDK-8177784

Use CounterMode intrinsic for AES/GCM

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    Backports

      Description

        The GCM mode of operation is essentially CTR mode with an additional operation that provides authenticity. That means that we can reuse parts of the CTR mode code in GCM. The benefit of this arrangement is that there is an intrinsic for AES/CTR that significantly improves the performance of this operation on systems with AES instructions. The current GCM code has a loop that invoked the AES intrinsic one block at a time. It would be much more efficient to invoke the AES/CTR intrinsic on the entire buffer.

        Attachments

          1. gcm_baseline.txt
            6 kB
            Adam Petcher
          2. gcm_ctr_patch
            5 kB
            Adam Petcher
          3. gcm_improved.txt
            6 kB
            Adam Petcher

          Issue Links

            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8179152 Use CounterMode intrinsic for AES/GCM

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8246990 Use CounterMode intrinsic for AES/GCM

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8242156 Use CounterMode intrinsic for AES/GCM

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            relates to

            Enhancement - null JDK-8178478 Better parallelize GCM

            • P3 - Major loss of function.
            • Closed

            Activity

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                ascarpino Anthony Scarpino
                apetcher Adam Petcher (Inactive)
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                Dates

                  Created:
                  Updated:
                  Resolved: