diff --git a/lib/crypto_backend/crypto_gcrypt.c b/lib/crypto_backend/crypto_gcrypt.c
index 2b24803a..f17aec48 100644
--- a/lib/crypto_backend/crypto_gcrypt.c
+++ b/lib/crypto_backend/crypto_gcrypt.c
@@ -267,7 +267,6 @@ int crypt_hash_final(struct crypt_hash *ctx, char *buffer, size_t length)
 void crypt_hash_destroy(struct crypt_hash *ctx)
 {
 	gcry_md_close(ctx->hd);
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }
 
@@ -342,7 +341,6 @@ int crypt_hmac_final(struct crypt_hmac *ctx, char *buffer, size_t length)
 void crypt_hmac_destroy(struct crypt_hmac *ctx)
 {
 	gcry_md_close(ctx->hd);
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }
 
diff --git a/lib/crypto_backend/crypto_kernel.c b/lib/crypto_backend/crypto_kernel.c
index 8493c0af..b9b22899 100644
--- a/lib/crypto_backend/crypto_kernel.c
+++ b/lib/crypto_backend/crypto_kernel.c
@@ -245,7 +245,6 @@ void crypt_hash_destroy(struct crypt_hash *ctx)
 		close(ctx->tfmfd);
 	if (ctx->opfd >= 0)
 		close(ctx->opfd);
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }
 
@@ -324,7 +323,6 @@ void crypt_hmac_destroy(struct crypt_hmac *ctx)
 		close(ctx->tfmfd);
 	if (ctx->opfd >= 0)
 		close(ctx->opfd);
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }
 
diff --git a/lib/crypto_backend/crypto_openssl.c b/lib/crypto_backend/crypto_openssl.c
index 63a4ad72..e310a4ac 100644
--- a/lib/crypto_backend/crypto_openssl.c
+++ b/lib/crypto_backend/crypto_openssl.c
@@ -414,7 +414,6 @@ void crypt_hash_destroy(struct crypt_hash *ctx)
 {
 	hash_id_free(ctx->hash_id);
 	EVP_MD_CTX_free(ctx->md);
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }
 
@@ -550,7 +549,6 @@ void crypt_hmac_destroy(struct crypt_hmac *ctx)
 	hash_id_free(ctx->hash_id);
 	HMAC_CTX_free(ctx->md);
 #endif
-	memset(ctx, 0, sizeof(*ctx));
 	free(ctx);
 }