Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
crypto: qce - Set data unit size to message length for AES XTS transformation
Set the register REG_ENCR_XTS_DU_SIZE to cryptlen for AES XTS
transformation. Anything else causes the engine to return back
wrong results.
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
authored by
Thara Gopinath
and committed by
Herbert Xu
24cbcc94
25b71d61
+4
-4
+4
-4
drivers/crypto/qce/common.c
+4
-4
drivers/crypto/qce/common.c
···
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{
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u32 xtskey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(u32)] = {0};
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unsigned int xtsklen = enckeylen / (2 * sizeof(u32));
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-
unsigned int xtsdusize;
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qce_cpu_to_be32p_array((__be32 *)xtskey, enckey + enckeylen / 2,
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enckeylen / 2);
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qce_write_array(qce, REG_ENCR_XTS_KEY0, xtskey, xtsklen);
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/* xts du size 512B */
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xtsdusize = min_t(u32, QCE_SECTOR_SIZE, cryptlen);
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qce_write(qce, REG_ENCR_XTS_DU_SIZE, xtsdusize);
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/* Set data unit size to cryptlen. Anything else causes
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* crypto engine to return back incorrect results.
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*/
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qce_write(qce, REG_ENCR_XTS_DU_SIZE, cryptlen);
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}
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static int qce_setup_regs_skcipher(struct crypto_async_request *async_req,