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904a742158
This patch adds trusted hardware key support for DCP crypto driver. Signed-off-by: Kshitiz Varshney <kshitiz.varshney@nxp.com> Reviewed by: Pankaj Gupta <pankaj.gupta@nxp.com>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2022 NXP
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*/
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#include <keys/trusted_dcp.h>
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#include <keys/trusted-type.h>
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#include <linux/build_bug.h>
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#include <linux/key-type.h>
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#include <soc/fsl/dcp-blob.h>
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static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
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{
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struct dcp_key_payload info = {
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.key = p->key, .blob = p->blob,
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.key_len = p->key_len, .blob_len = p->blob_len,
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};
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int ret = 0;
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ret = mxs_dcp_blob_to_key(&info);
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if (ret)
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pr_err("trusted DCP seal error :%d\n", ret);
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p->key_len = info.key_len;
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return ret;
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}
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static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
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{
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struct dcp_key_payload info = {
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.key = p->key, .blob = p->blob,
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.key_len = p->key_len, .blob_len = p->blob_len,
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};
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int ret = 0;
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ret= mxs_dcp_blob_to_key(&info);
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if (ret)
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pr_err("trusted DCP unseal error :%d\n", ret);
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p->key_len = info.key_len;
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return ret;
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}
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static int trusted_dcp_init(void)
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{
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int ret;
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ret = register_key_type(&key_type_trusted);
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if (ret)
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printk(KERN_INFO "Trusted key not registered\n");
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return ret;
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}
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static void trusted_dcp_exit(void)
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{
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unregister_key_type(&key_type_trusted);
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}
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struct trusted_key_ops trusted_key_dcp_ops = {
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.migratable = 0, /* non-migratable */
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.init = trusted_dcp_init,
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.seal = trusted_dcp_seal,
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.unseal = trusted_dcp_unseal,
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.exit = trusted_dcp_exit,
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};
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