diff options
| author |   Eric Biggers <ebiggers@google.com> | 2018-12-04 22:20:04 -0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2018-12-13 18:24:58 +0800 |
| commit | 7a507d62258afd514583fadf1482451079fa0e4d (patch) | |
| tree | bff7778a6fcb50dc9f8030fe7710f011ce857ff2 /arch/x86/crypto | |
| parent | crypto: x86/chacha20 - refactor to allow varying number of rounds (diff) | |
| download | linux-dev-7a507d62258afd514583fadf1482451079fa0e4d.tar.xz linux-dev-7a507d62258afd514583fadf1482451079fa0e4d.zip | |
crypto: x86/chacha - add XChaCha12 support
Now that the x86_64 SIMD implementations of ChaCha20 and XChaCha20 have
been refactored to support varying the number of rounds, add support for
XChaCha12. This is identical to XChaCha20 except for the number of
rounds, which is 12 instead of 20. This can be used by Adiantum.
Reviewed-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
| -rw-r--r-- | arch/x86/crypto/chacha_glue.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/crypto/chacha_glue.c b/arch/x86/crypto/chacha_glue.c index 35fd02b50d27..d19c2908be90 100644 --- a/arch/x86/crypto/chacha_glue.c +++ b/arch/x86/crypto/chacha_glue.c @@ -232,6 +232,21 @@ static struct skcipher_alg algs[] = { .setkey = crypto_chacha20_setkey, .encrypt = xchacha_simd, .decrypt = xchacha_simd, + }, { + .base.cra_name = "xchacha12", + .base.cra_driver_name = "xchacha12-simd", + .base.cra_priority = 300, + .base.cra_blocksize = 1, + .base.cra_ctxsize = sizeof(struct chacha_ctx), + .base.cra_module = THIS_MODULE, + + .min_keysize = CHACHA_KEY_SIZE, + .max_keysize = CHACHA_KEY_SIZE, + .ivsize = XCHACHA_IV_SIZE, + .chunksize = CHACHA_BLOCK_SIZE, + .setkey = crypto_chacha12_setkey, + .encrypt = xchacha_simd, + .decrypt = xchacha_simd, }, }; @@ -268,3 +283,5 @@ MODULE_ALIAS_CRYPTO("chacha20"); MODULE_ALIAS_CRYPTO("chacha20-simd"); MODULE_ALIAS_CRYPTO("xchacha20"); MODULE_ALIAS_CRYPTO("xchacha20-simd"); +MODULE_ALIAS_CRYPTO("xchacha12"); +MODULE_ALIAS_CRYPTO("xchacha12-simd"); |