[PATCH 13/24] crypto: inside-secure - Forbid 2-key 3DES in FIPS mode

[Herbert Xu]

This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode.
   
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
---

 drivers/crypto/inside-secure/safexcel_cipher.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c 
b/drivers/crypto/inside-secure/safexcel_cipher.c
index 7ef30a98cb24..de4be10b172f 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -1039,13 +1039,12 @@ static int safexcel_cbc_des3_ede_decrypt(struct 
skcipher_request *req)
 static int safexcel_des3_ede_setkey(struct crypto_skcipher *ctfm,
                                   const u8 *key, unsigned int len)
 {
-       struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm);
-       struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+       struct safexcel_cipher_ctx *ctx = crypto_skcipher_ctx(ctfm);
+       int err;
 
-       if (len != DES3_EDE_KEY_SIZE) {
-               crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
-               return -EINVAL;
-       }
+       err = des3_verify_key(ctfm, key);
+       if (unlikely(err))
+               return err;
 
        /* if context exits and key changed, need to invalidate it */
        if (ctx->base.ctxr_dma) {