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authorMatt Caswell <matt@openssl.org>2021-05-07 17:59:47 +0100
committerMatt Caswell <matt@openssl.org>2021-05-20 09:32:40 +0100
commit447588b69aa6ba46e61302570df9d2d2a57960ed (patch)
treec0bd727c9b2b0c43ed023bba922ffb8a30684ee8 /crypto/provider_child.c
parentad8570a8b6b4ec27e92013653d4d36b0c1b36991 (diff)
Add a callback for providers to know about global properties changes
Where a child libctx is in use it needs to know what the current global properties are. Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15242)
Diffstat (limited to 'crypto/provider_child.c')
-rw-r--r--crypto/provider_child.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/provider_child.c b/crypto/provider_child.c
index 14d0054624..e4d586bf7d 100644
--- a/crypto/provider_child.c
+++ b/crypto/provider_child.c
@@ -12,6 +12,7 @@
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/provider.h>
+#include <openssl/evp.h>
#include "internal/provider.h"
#include "internal/cryptlib.h"
@@ -198,6 +199,13 @@ static int provider_remove_child_cb(const OSSL_CORE_HANDLE *prov, void *cbdata)
return 1;
}
+static int provider_global_props_cb(const char *props, void *cbdata)
+{
+ OSSL_LIB_CTX *ctx = cbdata;
+
+ return evp_set_default_properties_int(ctx, props, 0, 1);
+}
+
int ossl_provider_init_as_child(OSSL_LIB_CTX *ctx,
const OSSL_CORE_HANDLE *handle,
const OSSL_DISPATCH *in)
@@ -265,6 +273,7 @@ int ossl_provider_init_as_child(OSSL_LIB_CTX *ctx,
if (!gbl->c_provider_register_child_cb(gbl->handle,
provider_create_child_cb,
provider_remove_child_cb,
+ provider_global_props_cb,
ctx))
return 0;
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cryptographic API.
 *
 * DES & Triple DES EDE Cipher Algorithms.
 *
 * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no>
 */

#include <asm/byteorder.h>
#include <linux/bitops.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/crypto.h>

#include <crypto/internal/des.h>

static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
		      unsigned int keylen)
{
	struct des_ctx *dctx = crypto_tfm_ctx(tfm);
	int err;

	err = des_expand_key(dctx, key, keylen);
	if (err == -ENOKEY) {
		if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
			err = -EINVAL;
		else
			err = 0;
	}

	if (err) {
		memset(dctx, 0, sizeof(*dctx));
		crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
	}
	return err;
}

static void crypto_des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	const struct des_ctx *dctx = crypto_tfm_ctx(tfm);

	des_encrypt(dctx, dst, src);
}

static void crypto_des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	const struct des_ctx *dctx = crypto_tfm_ctx(tfm);

	des_decrypt(dctx, dst, src);
}

static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
			   unsigned int keylen)
{
	struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
	int err;

	err = des3_ede_expand_key(dctx, key, keylen);
	if (err == -ENOKEY) {
		if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
			err = -EINVAL;
		else
			err = 0;
	}

	if (err) {
		memset(dctx, 0, sizeof(*dctx));
		crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
	}
	return err;
}

static void crypto_des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst,
				    const u8 *src)
{
	const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);

	des3_ede_encrypt(dctx, dst, src);
}

static void crypto_des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst,
				    const u8 *src)
{
	const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);

	des3_ede_decrypt(dctx, dst, src);
}

static struct crypto_alg des_algs[2] = { {
	.cra_name		=	"des",
	.cra_driver_name	=	"des-generic",
	.cra_priority		=	100,
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	DES_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof(struct des_ctx),
	.cra_module		=	THIS_MODULE,
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	DES_KEY_SIZE,
	.cia_max_keysize	=	DES_KEY_SIZE,
	.cia_setkey		=	des_setkey,
	.cia_encrypt		=	crypto_des_encrypt,
	.cia_decrypt		=	crypto_des_decrypt } }
}, {
	.cra_name		=	"des3_ede",
	.cra_driver_name	=	"des3_ede-generic",
	.cra_priority		=	100,
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	DES3_EDE_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof(struct des3_ede_ctx),
	.cra_module		=	THIS_MODULE,
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	DES3_EDE_KEY_SIZE,
	.cia_max_keysize	=	DES3_EDE_KEY_SIZE,
	.cia_setkey		=	des3_ede_setkey,
	.cia_encrypt		=	crypto_des3_ede_encrypt,
	.cia_decrypt		=	crypto_des3_ede_decrypt } }
} };

static int __init des_generic_mod_init(void)
{
	return crypto_register_algs(des_algs, ARRAY_SIZE(des_algs));
}

static void __exit des_generic_mod_fini(void)
{
	crypto_unregister_algs(des_algs, ARRAY_SIZE(des_algs));
}

subsys_initcall(des_generic_mod_init);
module_exit(des_generic_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");
MODULE_AUTHOR("Dag Arne Osvik <da@osvik.no>");
MODULE_ALIAS_CRYPTO("des");
MODULE_ALIAS_CRYPTO("des-generic");
MODULE_ALIAS_CRYPTO("des3_ede");
MODULE_ALIAS_CRYPTO("des3_ede-generic");