1 files changed, 111 insertions, 0 deletions
diff --git a/boot/image-sig.c b/boot/image-sig.c
new file mode 100644
index 00000000000..6bc74866eae
--- /dev/null
+++ b/boot/image-sig.c
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2013, Google Inc.
+ */
+
+#include <log.h>
+#include <malloc.h>
+#include <asm/global_data.h>
+DECLARE_GLOBAL_DATA_PTR;
+#include <image.h>
+#include <relocate.h>
+#include <u-boot/ecdsa.h>
+#include <u-boot/rsa.h>
+#include <u-boot/hash-checksum.h>
+
+#define IMAGE_MAX_HASHED_NODES		100
+
+struct checksum_algo checksum_algos[] = {
+#if CONFIG_IS_ENABLED(SHA1)
+	{
+		.name = "sha1",
+		.checksum_len = SHA1_SUM_LEN,
+		.der_len = SHA1_DER_LEN,
+		.der_prefix = sha1_der_prefix,
+		.calculate = hash_calculate,
+	},
+#endif
+#if CONFIG_IS_ENABLED(SHA256)
+	{
+		.name = "sha256",
+		.checksum_len = SHA256_SUM_LEN,
+		.der_len = SHA256_DER_LEN,
+		.der_prefix = sha256_der_prefix,
+		.calculate = hash_calculate,
+	},
+#endif
+#if CONFIG_IS_ENABLED(SHA384)
+	{
+		.name = "sha384",
+		.checksum_len = SHA384_SUM_LEN,
+		.der_len = SHA384_DER_LEN,
+		.der_prefix = sha384_der_prefix,
+		.calculate = hash_calculate,
+	},
+#endif
+#if CONFIG_IS_ENABLED(SHA512)
+	{
+		.name = "sha512",
+		.checksum_len = SHA512_SUM_LEN,
+		.der_len = SHA512_DER_LEN,
+		.der_prefix = sha512_der_prefix,
+		.calculate = hash_calculate,
+	},
+#endif
+
+};
+
+struct checksum_algo *image_get_checksum_algo(const char *full_name)
+{
+	int i;
+	const char *name;
+
+	for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
+		name = checksum_algos[i].name;
+		/* Make sure names match and next char is a comma */
+		if (!strncmp(name, full_name, strlen(name)) &&
+		    full_name[strlen(name)] == ',')
+			return &checksum_algos[i];
+	}
+
+	return NULL;
+}
+
+struct crypto_algo *image_get_crypto_algo(const char *full_name)
+{
+	struct crypto_algo *crypto, *end;
+	const char *name;
+
+	/* Move name to after the comma */
+	name = strchr(full_name, ',');
+	if (!name)
+		return NULL;
+	name += 1;
+
+	crypto = ll_entry_start(struct crypto_algo, cryptos);
+	end = ll_entry_end(struct crypto_algo, cryptos);
+	for (; crypto < end; crypto++) {
+		if (!strcmp(crypto->name, name))
+			return crypto;
+	}
+
+	/* Not found */
+	return NULL;
+}
+
+struct padding_algo *image_get_padding_algo(const char *name)
+{
+	struct padding_algo *padding, *end;
+
+	if (!name)
+		return NULL;
+
+	padding = ll_entry_start(struct padding_algo, paddings);
+	end = ll_entry_end(struct padding_algo, paddings);
+	for (; padding < end; padding++) {
+		if (!strcmp(padding->name, name))
+			return padding;
+	}
+
+	return NULL;
+}