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crypto: testmgr - check for skcipher_request corruption

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Check that algorithms do not change the skcipher_request structure, as
users may rely on submitting the request again (e.g. after copying new
data into the same source buffer) without reinitializing everything.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2019-01-31 23:51:49 -08:00 committed by Herbert Xu
parent 4cc2dcf95f
commit fa353c9917
1 changed files with 41 additions and 0 deletions
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41
crypto/testmgr.c
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@ -1535,6 +1535,47 @@ static int test_skcipher_vec_cfg(const char *driver, int enc,
return err;
}
/* Check that the algorithm didn't overwrite things it shouldn't have */
if (req->cryptlen != vec->len ||
req->iv != iv ||
req->src != tsgls->src.sgl_ptr ||
req->dst != tsgls->dst.sgl_ptr ||
crypto_skcipher_reqtfm(req) != tfm ||
req->base.complete != crypto_req_done ||
req->base.flags != req_flags ||
req->base.data != &wait) {
pr_err("alg: skcipher: %s %s corrupted request struct on test vector %u, cfg=\"%s\"\n",
driver, op, vec_num, cfg->name);
if (req->cryptlen != vec->len)
pr_err("alg: skcipher: changed 'req->cryptlen'\n");
if (req->iv != iv)
pr_err("alg: skcipher: changed 'req->iv'\n");
if (req->src != tsgls->src.sgl_ptr)
pr_err("alg: skcipher: changed 'req->src'\n");
if (req->dst != tsgls->dst.sgl_ptr)
pr_err("alg: skcipher: changed 'req->dst'\n");
if (crypto_skcipher_reqtfm(req) != tfm)
pr_err("alg: skcipher: changed 'req->base.tfm'\n");
if (req->base.complete != crypto_req_done)
pr_err("alg: skcipher: changed 'req->base.complete'\n");
if (req->base.flags != req_flags)
pr_err("alg: skcipher: changed 'req->base.flags'\n");
if (req->base.data != &wait)
pr_err("alg: skcipher: changed 'req->base.data'\n");
return -EINVAL;
}
if (is_test_sglist_corrupted(&tsgls->src)) {
pr_err("alg: skcipher: %s %s corrupted src sgl on test vector %u, cfg=\"%s\"\n",
driver, op, vec_num, cfg->name);
return -EINVAL;
}
if (tsgls->dst.sgl_ptr != tsgls->src.sgl &&
is_test_sglist_corrupted(&tsgls->dst)) {
pr_err("alg: skcipher: %s %s corrupted dst sgl on test vector %u, cfg=\"%s\"\n",
driver, op, vec_num, cfg->name);
return -EINVAL;
}
/* Check for the correct output (ciphertext or plaintext) */
err = verify_correct_output(&tsgls->dst, enc ? vec->ctext : vec->ptext,
vec->len, 0, true);