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public_key: move common functions to public key helper

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Move public_key_free and public_key_signature_free as helper
functions that can be shared by legacy crypto lib and MbedTLS
implementation.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Raymond Mao
2024-10-03 14:50:25 -07:00
committed by Tom Rini
parent 6b0d26caf1
commit b36a8b8911
3 changed files with 42 additions and 32 deletions
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4
lib/crypto/Makefile
View File

@@ -7,7 +7,9 @@ obj-$(CONFIG_$(SPL_)ASYMMETRIC_KEY_TYPE) += asymmetric_keys.o
asymmetric_keys-y := asymmetric_type.o
obj-$(CONFIG_$(SPL_)ASYMMETRIC_PUBLIC_KEY_SUBTYPE) += public_key.o
obj-$(CONFIG_$(SPL_)ASYMMETRIC_PUBLIC_KEY_SUBTYPE) += \
public_key_helper.o \
public_key.o
#
# RSA public key parser

31
lib/crypto/public_key.c
View File

@@ -51,38 +51,7 @@ static void public_key_describe(const struct key *asymmetric_key,
}
#endif
/*
* Destroy a public key algorithm key.
*/
void public_key_free(struct public_key *key)
{
if (key) {
kfree(key->key);
kfree(key->params);
kfree(key);
}
}
EXPORT_SYMBOL_GPL(public_key_free);
#ifdef __UBOOT__
/*
* from <linux>/crypto/asymmetric_keys/signature.c
*
* Destroy a public key signature.
*/
void public_key_signature_free(struct public_key_signature *sig)
{
int i;
if (sig) {
for (i = 0; i < ARRAY_SIZE(sig->auth_ids); i++)
free(sig->auth_ids[i]);
free(sig->s);
free(sig->digest);
free(sig);
}
}
EXPORT_SYMBOL_GPL(public_key_signature_free);
/**
* public_key_verify_signature - Verify a signature using a public key.

39
lib/crypto/public_key_helper.c Normal file
View File

@@ -0,0 +1,39 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* X509 helper functions
*
* Copyright (c) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#include <linux/compat.h>
#include <crypto/public_key.h>
/*
* Destroy a public key algorithm key.
*/
void public_key_free(struct public_key *key)
{
if (key) {
kfree(key->key);
kfree(key->params);
kfree(key);
}
}
/*
* from <linux>/crypto/asymmetric_keys/signature.c
*
* Destroy a public key signature.
*/
void public_key_signature_free(struct public_key_signature *sig)
{
int i;
if (sig) {
for (i = 0; i < ARRAY_SIZE(sig->auth_ids); i++)
kfree(sig->auth_ids[i]);
kfree(sig->s);
kfree(sig->digest);
kfree(sig);
}
}