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crypto: x86/xts - implement support for ciphertext stealing

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Align the x86 code with the generic XTS template, which now supports
ciphertext stealing as described by the IEEE XTS-AES spec P1619.

Tested-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel
2019-08-16 15:21:50 +03:00
committed by Herbert Xu
parent b395ed4f94
commit 8ce5fac2dc
9 changed files with 81 additions and 18 deletions
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arch/x86/include/asm/crypto/glue_helper.h
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@@ -114,7 +114,7 @@ extern int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
extern int glue_xts_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req,
common_glue_func_t tweak_fn, void *tweak_ctx,
void *crypt_ctx);
void *crypt_ctx, bool decrypt);
extern void glue_xts_crypt_128bit_one(void *ctx, u128 *dst, const u128 *src,
le128 *iv, common_glue_func_t fn);