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  1. JDK
  2. JDK-8247645

ChaCha20 Intrinsics

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    Description

      Create intrinsics for the ChaCha20 algorithm for x86_64 and aarch64. On x86_64, support for AVX, AVX2 and AVX-512 should be taken into account to support a wide array of x86 chips. For the aarch64 platform, a baseline ASIMD implementation should be created, with possible enhancements from the SVE instruction set for supporting processors.

      The current approach will accelerate the core 20-round ChaCha20 block function, as outlined in RFC 7539, section 2.3.

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          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. JDK-8296233 C2 crashes with Unschedulable Graph in ChaCha20Poly1305 microbenchmark with ChaCha20 intrinsics and UseAVX=3

          • P3 - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8302007 Improve ChaCha20 intrinsics for single-part encryption/decryption on AVX-512

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Enhancement - null JDK-8288047 Accelerate Poly1305 on x86_64 using AVX512 instructions

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8298055 AArch64: fastdebug build fails after JDK-8247645

          • P1 - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8298592 Add java man page documentation for ChaCha20 and Poly1305 intrinsics

          • P3 - Major loss of function.
          • Resolved
          links to

          Commit Commit openjdk/jdk/cd6bebbf

          Review Review openjdk/jdk/7702

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              jnimeh Jamil Nimeh
              xuelei Xuelei Fan
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                Created:
                Updated:
                Resolved: