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| author | Stephan Mueller <smueller@chronox.de> | 2016-08-25 15:15:01 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-08-31 23:21:25 +0800 |
| commit | 10faa8c0d6c3b22466f97713a9533824a2ea1c57 (patch) | |
| tree | 3e6c48146665b6397a434d142cf1d2014d7fee68 /crypto | |
| parent | 93ba73fed31d0ec96489fedaeef1a1c402f9c8e4 (diff) | |
| download | lwn-10faa8c0d6c3b22466f97713a9533824a2ea1c57.tar.gz lwn-10faa8c0d6c3b22466f97713a9533824a2ea1c57.zip | |
crypto: FIPS - allow tests to be disabled in FIPS mode
In FIPS mode, additional restrictions may apply. If these restrictions
are violated, the kernel will panic(). This patch allows test vectors
for symmetric ciphers to be marked as to be skipped in FIPS mode.
Together with the patch, the XTS test vectors where the AES key is
identical to the tweak key is disabled in FIPS mode. This test vector
violates the FIPS requirement that both keys must be different.
Reported-by: Tapas Sarangi <TSarangi@trustwave.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/testmgr.c | 9 | ||||
| -rw-r--r-- | crypto/testmgr.h | 4 |
2 files changed, 13 insertions, 0 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index c2a8bd38ef1f..0b01c3d062e2 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -1008,6 +1008,9 @@ static int test_cipher(struct crypto_cipher *tfm, int enc, if (template[i].np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + j++; ret = -EINVAL; @@ -1112,6 +1115,9 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, if (template[i].np && !template[i].also_non_np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + if (template[i].iv) memcpy(iv, template[i].iv, ivsize); else @@ -1198,6 +1204,9 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, if (!template[i].np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + if (template[i].iv) memcpy(iv, template[i].iv, ivsize); else diff --git a/crypto/testmgr.h b/crypto/testmgr.h index acb6bbff781a..e64a4ef9d8ca 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -59,6 +59,7 @@ struct hash_testvec { * @tap: How to distribute data in @np SGs * @also_non_np: if set to 1, the test will be also done without * splitting data in @np SGs + * @fips_skip: Skip the test vector in FIPS mode */ struct cipher_testvec { @@ -75,6 +76,7 @@ struct cipher_testvec { unsigned char klen; unsigned short ilen; unsigned short rlen; + bool fips_skip; }; struct aead_testvec { @@ -18224,6 +18226,7 @@ static struct cipher_testvec aes_xts_enc_tv_template[] = { "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .klen = 32, + .fips_skip = 1, .iv = "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .input = "\x00\x00\x00\x00\x00\x00\x00\x00" @@ -18566,6 +18569,7 @@ static struct cipher_testvec aes_xts_dec_tv_template[] = { "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .klen = 32, + .fips_skip = 1, .iv = "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .input = "\x91\x7c\xf6\x9e\xbd\x68\xb2\xec" |