add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/crypto/asymmetric_keys/x509_public_key.c
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@@ -1,12 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* Instantiate a public key crypto key from an X.509 Certificate
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  *
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  * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
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  * Written by David Howells (dhowells@redhat.com)
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public Licence
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- * as published by the Free Software Foundation; either version
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- * 2 of the Licence, or (at your option) any later version.
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  */
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 #define pr_fmt(fmt) "X.509: "fmt
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@@ -33,6 +29,9 @@
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 	int ret;
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 	pr_devel("==>%s()\n", __func__);
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+
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+	sig->data = cert->tbs;
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+	sig->data_size = cert->tbs_size;
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 	if (!cert->pub->pkey_algo)
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 		cert->unsupported_key = true;
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@@ -77,7 +76,6 @@
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 		goto error;
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 	desc->tfm = tfm;
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-	desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
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 	ret = crypto_shash_digest(desc, cert->tbs, cert->tbs_size, sig->digest);
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 	if (ret < 0)
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@@ -134,6 +132,11 @@
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 	if (strcmp(cert->pub->pkey_algo, cert->sig->pkey_algo) != 0)
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 		goto out;
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+	if (cert->unsupported_sig) {
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+		ret = 0;
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+		goto out;
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+	}
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+
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 	ret = public_key_verify_signature(cert->pub, cert->sig);
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 	if (ret < 0) {
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 		if (ret == -ENOPKG) {