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  1. JDK
  2. JDK-8203228

Branch-free output conversion for X25519 and X448

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    Backports

      Description

        The existing X25519 and X448 implementations do not branch during the group operations. However, converting the resulting group element to a byte array currently uses BigInteger. Removing the branching from this operation will make the implementation more resistant to side-channel attacks, and possibly more efficient.

        This is an implementation change only, and the correctness can be verified by running the existing regression tests for X25519/X448 and the underlying field arithmetic.

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            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-8206576 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8206799 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8217694 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8218248 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8218783 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8224345 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8226818 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8227347 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • 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-8227874 Branch-free output conversion for X25519 and X448

            • P3 - Major loss of function.
            • Resolved

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                apetcher Adam Petcher (Inactive)
                apetcher Adam Petcher (Inactive)
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                  Updated:
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