Commit 10faa8c0 authored by Stephan Mueller's avatar Stephan Mueller Committed by Herbert Xu
Browse files

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: default avatarTapas Sarangi <TSarangi@trustwave.com>
Signed-off-by: default avatarStephan Mueller <smueller@chronox.de>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 93ba73fe

crypto/testmgr.c

+9 −0
Original line number Diff line number Diff line
@@ -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

crypto/testmgr.h

+4 −0
Original line number Diff line number Diff line
@@ -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"



























































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