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Arria 10 soc cpuinfo4/19/2023 ![]() ![]() ![]() ![]() Yes, both methods will work without any HW crypto, and will use all software implementations available in the kernel (enabled at time when kernel was built).SUSE Security Update: Security update for the Linux Kernel If yes - does it mean they use software algorithm in kernel? So, if I need crypto support in Linux, and does not have hw support, will the userspace API (for AF_ALG and cryptodev) still work? They also claim on their website "Support for all major cipher and hash algorithms" so, it may use hardware crypto accelerator, but will work for any supported algorithm with software implementation when there is no hardware (there is always some crypto which is not implemented by any hardware). It should be downloaded, built and installed by user (slide 10 of " Out of kernel tree code (for years)"). And to use some algorithms (hashes, symmetric ciphers, random generators), corresponding CONFIG_CRYPTO_USER_API suboption should be enabled too:ġ489 tristate "User-space interface for hash algorithms"ġ494 This option enables the user-spaces interface for hashġ498 tristate "User-space interface for symmetric key cipher algorithms"ġ503 This option enables the user-spaces interface for symmetricġ507 tristate "User-space interface for random number generator algorithms"ġ512 This option enables the user-spaces interface for randomĬryptodev ( ) looks bit like out-of-tree driver, not included into standard kernel (empty search for or ). ![]() AF_ALG can be enabled in 4.1 kernel by CONFIG_CRYPTO_USER_API option set as 'y' or 'm' in kernel configuration when it was built (check config file of the kernel, sometimes it is available as /proc/config.gz or in /boot partition). Overview of both methods: AF_ALG and cryptodev ( /dev/crypto) "Utilizing the crypto accelerators - Marek Vaˇsut - May 18, 2014"Īs I understand, AF_ALG just uses generic kernel crypto API and may use hw crypto accelerator, but always can use software crypto enabled in kernel. ![]()
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