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⇱ LibreSSL 4.1 Released With Faster SHA-1/SHA-256/SHA-512 On Modern AMD & Intel CPUs - Phoronix

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LibreSSL 4.1 Released With Faster SHA-1/SHA-256/SHA-512 On Modern AMD & Intel CPUs

Written by Michael Larabel in Free Software on 30 April 2025 at 08:52 AM EDT. 29 Comments
LibreSSL 4.1 released today as the newest version of this SSL/TLS library project forked a decade ago by OpenBSD from OpenSSL.

LibreSSL 4.1 introduces new SHA-1, SHA-256, and SHA-512 Assembly implementations for x86_64 with modern AMD and Intel processors. These new SHA-1/SHA-256/SHA-512 implementations for x86_64 make use of the SHA-NI instructions when available and replay old Perl-generated Assembly code.

LibreSSL 4.1 also has new SHA-256 and SHA-512 implementations for AArch64 making use of the ARM Cryptographic Extension (CE).

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Another CPU improvement with LibreSSL 4.1 is introducing experimental support for the LoongArch 64-bit Chinese CPU architecture.

LibreSSL 4.1 also brings error handling improvements, many bug fixes, reworked CPU capabilities detection for both AMD64 and AArch64, and a variety of other improvements.

Downloads and more details on today's LibreSSL 4.1 release via LibreSSL.org.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.