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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-11 16:51:18 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-18 22:15:01 +0800 |
| commit | beebb714e79c62704a62456371a8e02b487f7cff (patch) | |
| tree | d88eb7af0fa228fc4a5110ccdf01299cc4824a6b | |
| parent | 1ad2267cb6202002f318103e12233fea7a60671a (diff) | |
| download | linux-beebb714e79c62704a62456371a8e02b487f7cff.tar.bz2 | |
crypto: stm32 - Forbid 2-key 3DES in FIPS mode
This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Lionel Debieve<lionel.debieve@st.com>
Tested-by: Lionel Debieve<lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/stm32/stm32-cryp.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c index 23b0b7bd64c7..5785f3e235ce 100644 --- a/drivers/crypto/stm32/stm32-cryp.c +++ b/drivers/crypto/stm32/stm32-cryp.c @@ -762,10 +762,17 @@ static int stm32_cryp_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key, static int stm32_cryp_tdes_setkey(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen) { - if (keylen != (3 * DES_KEY_SIZE)) - return -EINVAL; - else - return stm32_cryp_setkey(tfm, key, keylen); + u32 flags; + int err; + + flags = crypto_ablkcipher_get_flags(tfm); + err = __des3_verify_key(&flags, key); + if (unlikely(err)) { + crypto_ablkcipher_set_flags(tfm, flags); + return err; + } + + return stm32_cryp_setkey(tfm, key, keylen); } static int stm32_cryp_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key, |