From c3041f9c93e31159f4e321abea7c1549d271e6a7 Mon Sep 17 00:00:00 2001 From: Evgeniy Polyakov Date: Thu, 11 Oct 2007 19:58:16 +0800 Subject: [CRYPTO] hifn_795x: Detect weak keys HIFN driver update to use DES weak key checks (exported in this patch). Signed-off-by: Evgeniy Polyakov Signed-off-by: Herbert Xu --- drivers/crypto/hifn_795x.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/crypto/hifn_795x.c') diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c index e3376f2236b..391c20a3dff 100644 --- a/drivers/crypto/hifn_795x.c +++ b/drivers/crypto/hifn_795x.c @@ -29,6 +29,7 @@ #include #include +#include #include @@ -1924,6 +1925,16 @@ static int hifn_setkey(struct crypto_ablkcipher *cipher, const u8 *key, return -1; } + if (len == HIFN_DES_KEY_LENGTH) { + u32 tmp[DES_EXPKEY_WORDS]; + int ret = des_ekey(tmp, key); + + if (unlikely(ret == 0) && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + return -EINVAL; + } + } + dev->flags &= ~HIFN_FLAG_OLD_KEY; memcpy(ctx->key, key, len); -- cgit v1.2.3