Thread (5 messages) 5 messages, 2 authors, 2021-04-02

[PATCH 3/3] crypto: stm32 - use memzero_explicit() for clearing data

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STALE2027d

From: Kai Ye <hidden>
Date: 2021-03-26 01:24:04
Also in: lkml
Subsystem: crypto api, the rest · Maintainers: Herbert Xu, "David S. Miller", Linus Torvalds

use memzero_explicit instead of memset to clear sensitive data

Signed-off-by: Kai Ye <redacted>
---
 drivers/crypto/stm32/stm32-cryp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
index 2a479317..c4297e80 100644
--- a/drivers/crypto/stm32/stm32-cryp.c
+++ b/drivers/crypto/stm32/stm32-cryp.c
@@ -675,7 +675,7 @@ static void stm32_cryp_finish_req(struct stm32_cryp *cryp, int err)
 		crypto_finalize_skcipher_request(cryp->engine, cryp->req,
 						   err);
 
-	memset(cryp->ctx->key, 0, cryp->ctx->keylen);
+	memzero_explicit(cryp->ctx->key, cryp->ctx->keylen);
 }
 
 static int stm32_cryp_cpu_start(struct stm32_cryp *cryp)
-- 
2.8.1
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