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2019-11-01crypto: skcipher - remove the "blkcipher" algorithm typeEric Biggers1-4/+0
Now that all "blkcipher" algorithms have been converted to "skcipher", remove the blkcipher algorithm type. The skcipher (symmetric key cipher) algorithm type was introduced a few years ago to replace both blkcipher and ablkcipher (synchronous and asynchronous block cipher). The advantages of skcipher include: - A much less confusing name, since none of these algorithm types have ever actually been for raw block ciphers, but rather for all length-preserving encryption modes including block cipher modes of operation, stream ciphers, and other length-preserving modes. - It unified blkcipher and ablkcipher into a single algorithm type which supports both synchronous and asynchronous implementations. Note, blkcipher already operated only on scatterlists, so the fact that skcipher does too isn't a regression in functionality. - Better type safety by using struct skcipher_alg, struct crypto_skcipher, etc. instead of crypto_alg, crypto_tfm, etc. - It sometimes simplifies the implementations of algorithms. Also, the blkcipher API was no longer being tested. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-10-10crypto: user - fix memory leak in crypto_reportstatNavid Emamdoost1-1/+3
In crypto_reportstat, a new skb is created by nlmsg_new(). This skb is leaked if crypto_reportstat_alg() fails. Required release for skb is added. Fixes: cac5818c25d0 ("crypto: user - Implement a generic crypto statistics") Cc: <stable@vger.kernel.org> Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-26crypto: user - make NETLINK_CRYPTO work inside netnsOndrej Mosnacek1-1/+3
Currently, NETLINK_CRYPTO works only in the init network namespace. It doesn't make much sense to cut it out of the other network namespaces, so do the minor plumbing work necessary to make it work in any network namespace. Code inspired by net/core/sock_diag.c. Tested using kcapi-dgst from libkcapi [1]: Before: # unshare -n kcapi-dgst -c sha256 </dev/null | wc -c libkcapi - Error: Netlink error: sendmsg failed libkcapi - Error: Netlink error: sendmsg failed libkcapi - Error: NETLINK_CRYPTO: cannot obtain cipher information for hmac(sha512) (is required crypto_user.c patch missing? see documentation) 0 After: # unshare -n kcapi-dgst -c sha256 </dev/null | wc -c 32 [1] https://github.com/smuellerDD/libkcapi Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-18crypto: stat - remove unused mutexEric Biggers1-2/+0
crypto_cfg_mutex in crypto_user_stat.c is unused. Remove it. Cc: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-18crypto: user - forward declare crypto_nlskEric Biggers1-2/+0
Move the declaration of crypto_nlsk into internal/cryptouser.h. This fixes the following sparse warning: crypto/crypto_user_base.c:41:13: warning: symbol 'crypto_nlsk' was not declared. Should it be static? Cc: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-23crypto: user - remove unused dump functionsCorentin Labbe1-33/+0
This patch removes unused dump functions for crypto_user_stats. There are remains of the copy/paste of crypto_user_base to crypto_user_stat and I forgot to remove them. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - rename err_cnt parameterCorentin Labbe1-9/+9
Since now all crypto stats are on their own structures, it is now useless to have the algorithm name in the err_cnt member. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - Split stats in multiple structuresCorentin Labbe1-41/+41
Like for userspace, this patch splits stats into multiple structures, one for each algorithm class. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - remove intermediate variableCorentin Labbe1-91/+41
The use of the v64 intermediate variable is useless, and removing it bring to much readable code. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - Fix invalid stat reportingCorentin Labbe1-3/+3
Some error count use the wrong name for getting this data. But this had not caused any reporting problem, since all error count are shared in the same union. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - split user space crypto stat structuresCorentin Labbe1-10/+10
It is cleaner to have each stat in their own structures. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-07crypto: user - convert all stats from u32 to u64Corentin Labbe1-61/+53
All the 32-bit fields need to be 64-bit. In some cases, UINT32_MAX crypto operations can be done in seconds. Reported-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-11-09crypto: user - clean up report structure copyingEric Biggers1-78/+24
There have been a pretty ridiculous number of issues with initializing the report structures that are copied to userspace by NETLINK_CRYPTO. Commit 4473710df1f8 ("crypto: user - Prepare for CRYPTO_MAX_ALG_NAME expansion") replaced some strncpy()s with strlcpy()s, thereby introducing information leaks. Later two other people tried to replace other strncpy()s with strlcpy() too, which would have introduced even more information leaks: - https://lore.kernel.org/patchwork/patch/954991/ - https://patchwork.kernel.org/patch/10434351/ Commit cac5818c25d0 ("crypto: user - Implement a generic crypto statistics") also uses the buggy strlcpy() approach and therefore leaks uninitialized memory to userspace. A fix was proposed, but it was originally incomplete. Seeing as how apparently no one can get this right with the current approach, change all the reporting functions to: - Start by memsetting the report structure to 0. This guarantees it's always initialized, regardless of what happens later. - Initialize all strings using strscpy(). This is safe after the memset, ensures null termination of long strings, avoids unnecessary work, and avoids the -Wstringop-truncation warnings from gcc. - Use sizeof(var) instead of sizeof(type). This is more robust against copy+paste errors. For simplicity, also reuse the -EMSGSIZE return value from nla_put(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-11-09crypto: user - Zeroize whole structure given to user spaceCorentin Labbe1-0/+21
For preventing uninitialized data to be given to user-space (and so leak potential useful data), the crypto_stat structure must be correctly initialized. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: cac5818c25d0 ("crypto: user - Implement a generic crypto statistics") Signed-off-by: Corentin Labbe <clabbe@baylibre.com> [EB: also fix it in crypto_reportstat_one()] [EB: use sizeof(var) rather than sizeof(type)] Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-09-28crypto: user - Implement a generic crypto statisticsCorentin Labbe1-0/+463
This patch implement a generic way to get statistics about all crypto usages. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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