Larry Hastings <la...@hastings.org> added the comment:
> Performance wise... The SHA series have hardware acceleration on > modern CPUs and SoCs. External libraries such as OpenSSL are in a > position to provide implementations that make use of that. Same with > the Linux Kernel CryptoAPI (https://bugs.python.org/issue47102). > > Hardware accelerated SHAs are likely faster than blake3 single core. > And certainly more efficient in terms of watt-secs/byte. I don't know if OpenSSL currently uses the Intel SHA1 extensions. A quick google suggests they added support in 2017. And: * I'm using a recent CPU that AFAICT supports those extensions. (AMD 5950X) * My Python build with BLAKE3 support is using the OpenSSL implementation of SHA1 (_hashlib.openssl_sha1), which I believe is using the OpenSSL provided by the OS. (I haven't built my own OpenSSL or anything.) * I'm using a recent operating system release (Pop!_OS 21.10), which currently has OpenSSL version 1.1.1l-1ubuntu1.1 installed. * My Python build with BLAKE3 doesn't support multithreaded hashing. * In that Python build, BLAKE3 is roughly twice as fast as SHA1 for non-trivial workloads. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39298> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
