Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 110 insertions, 0 deletions

diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c
new file mode 100644
index 000000000..bf147b01e
--- /dev/null
+++ b/crypto/sha256_generic.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Crypto API wrapper for the generic SHA256 code from lib/crypto/sha256.c
+ *
+ * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
+ */
+#include <crypto/internal/hash.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/types.h>
+#include <crypto/sha2.h>
+#include <crypto/sha256_base.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
+const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = {
+	0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
+	0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
+	0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
+	0x2f
+};
+EXPORT_SYMBOL_GPL(sha224_zero_message_hash);
+
+const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE] = {
+	0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
+	0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
+	0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
+	0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55
+};
+EXPORT_SYMBOL_GPL(sha256_zero_message_hash);
+
+int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
+			  unsigned int len)
+{
+	sha256_update(shash_desc_ctx(desc), data, len);
+	return 0;
+}
+EXPORT_SYMBOL(crypto_sha256_update);
+
+static int crypto_sha256_final(struct shash_desc *desc, u8 *out)
+{
+	if (crypto_shash_digestsize(desc->tfm) == SHA224_DIGEST_SIZE)
+		sha224_final(shash_desc_ctx(desc), out);
+	else
+		sha256_final(shash_desc_ctx(desc), out);
+	return 0;
+}
+
+int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
+			unsigned int len, u8 *hash)
+{
+	sha256_update(shash_desc_ctx(desc), data, len);
+	return crypto_sha256_final(desc, hash);
+}
+EXPORT_SYMBOL(crypto_sha256_finup);
+
+static struct shash_alg sha256_algs[2] = { {
+	.digestsize	=	SHA256_DIGEST_SIZE,
+	.init		=	sha256_base_init,
+	.update		=	crypto_sha256_update,
+	.final		=	crypto_sha256_final,
+	.finup		=	crypto_sha256_finup,
+	.descsize	=	sizeof(struct sha256_state),
+	.base		=	{
+		.cra_name	=	"sha256",
+		.cra_driver_name=	"sha256-generic",
+		.cra_priority	=	100,
+		.cra_blocksize	=	SHA256_BLOCK_SIZE,
+		.cra_module	=	THIS_MODULE,
+	}
+}, {
+	.digestsize	=	SHA224_DIGEST_SIZE,
+	.init		=	sha224_base_init,
+	.update		=	crypto_sha256_update,
+	.final		=	crypto_sha256_final,
+	.finup		=	crypto_sha256_finup,
+	.descsize	=	sizeof(struct sha256_state),
+	.base		=	{
+		.cra_name	=	"sha224",
+		.cra_driver_name=	"sha224-generic",
+		.cra_priority	=	100,
+		.cra_blocksize	=	SHA224_BLOCK_SIZE,
+		.cra_module	=	THIS_MODULE,
+	}
+} };
+
+static int __init sha256_generic_mod_init(void)
+{
+	return crypto_register_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
+}
+
+static void __exit sha256_generic_mod_fini(void)
+{
+	crypto_unregister_shashes(sha256_algs, ARRAY_SIZE(sha256_algs));
+}
+
+subsys_initcall(sha256_generic_mod_init);
+module_exit(sha256_generic_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm");
+
+MODULE_ALIAS_CRYPTO("sha224");
+MODULE_ALIAS_CRYPTO("sha224-generic");
+MODULE_ALIAS_CRYPTO("sha256");
+MODULE_ALIAS_CRYPTO("sha256-generic");