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ocb3: use parallel-capable APIs #706
Description
Right now, ocb3 exclusively uses BlockCipherEncrypt::encrypt_block and BlockCipherDecrypt::decrypt_block. Although VAES support is coming in block-ciphers#491, ocb3 won't be able to take advantage of its (2-5x) speedups until encrypt_blocks*/decrypt_blocks* APIs are used.
Reacted by Tony Arcieri
Activity
newpavlov commentedon Aug 12, 2025
Yes, the implementation should be adopted to the cipher backend API. The current implementation is sub-optimal not only because we do not utilize parallel block processing, but also because we check target features on each
encrypt_blockcall.