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| author | Ard Biesheuvel <ardb@kernel.org> | 2020-12-08 00:34:02 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-01-02 22:41:34 +0100 |
| commit | ddf169a98f01d6fd46295ec0dd4c1d6385be65d4 (patch) | |
| tree | 67811b959d2e4af9d06d09be2b60774cba7404d8 /crypto/tcrypt.c | |
| parent | MAINTAINERS: crypto: s5p-sss: drop Kamil Konieczny (diff) | |
| download | linux-ddf169a98f01d6fd46295ec0dd4c1d6385be65d4.tar.xz linux-ddf169a98f01d6fd46295ec0dd4c1d6385be65d4.zip | |
crypto: aesni - implement support for cts(cbc(aes))
Follow the same approach as the arm64 driver for implementing a version
of AES-NI in CBC mode that supports ciphertext stealing. This results in
a ~2x speed increase for relatively short inputs (less than 256 bytes),
which is relevant given that AES-CBC with ciphertext stealing is used
for filename encryption in the fscrypt layer. For larger inputs, the
speedup is still significant (~25% on decryption, ~6% on encryption)
Tested-by: Eric Biggers <ebiggers@google.com> # x86_64
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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