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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2013, Google Inc.
- */
- #include <common.h>
- #include <log.h>
- #include <malloc.h>
- #include <asm/global_data.h>
- DECLARE_GLOBAL_DATA_PTR;
- #include <image.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[] = {
- {
- .name = "sha1",
- .checksum_len = SHA1_SUM_LEN,
- .der_len = SHA1_DER_LEN,
- .der_prefix = sha1_der_prefix,
- .calculate = hash_calculate,
- },
- {
- .name = "sha256",
- .checksum_len = SHA256_SUM_LEN,
- .der_len = SHA256_DER_LEN,
- .der_prefix = sha256_der_prefix,
- .calculate = hash_calculate,
- },
- #ifdef CONFIG_SHA384
- {
- .name = "sha384",
- .checksum_len = SHA384_SUM_LEN,
- .der_len = SHA384_DER_LEN,
- .der_prefix = sha384_der_prefix,
- .calculate = hash_calculate,
- },
- #endif
- #ifdef CONFIG_SHA512
- {
- .name = "sha512",
- .checksum_len = SHA512_SUM_LEN,
- .der_len = SHA512_DER_LEN,
- .der_prefix = sha512_der_prefix,
- .calculate = hash_calculate,
- },
- #endif
- };
- struct padding_algo padding_algos[] = {
- {
- .name = "pkcs-1.5",
- .verify = padding_pkcs_15_verify,
- },
- #ifdef CONFIG_FIT_RSASSA_PSS
- {
- .name = "pss",
- .verify = padding_pss_verify,
- }
- #endif /* CONFIG_FIT_RSASSA_PSS */
- };
- struct checksum_algo *image_get_checksum_algo(const char *full_name)
- {
- int i;
- const char *name;
- #if defined(CONFIG_NEEDS_MANUAL_RELOC)
- static bool done;
- if (!done) {
- done = true;
- for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
- checksum_algos[i].name += gd->reloc_off;
- checksum_algos[i].calculate += gd->reloc_off;
- }
- }
- #endif
- 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;
- #if defined(CONFIG_NEEDS_MANUAL_RELOC)
- static bool done;
- if (!done) {
- crypto = ll_entry_start(struct crypto_algo, cryptos);
- end = ll_entry_end(struct crypto_algo, cryptos);
- for (; crypto < end; crypto++) {
- crypto->name += gd->reloc_off;
- crypto->verify += gd->reloc_off;
- }
- }
- #endif
- /* 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)
- {
- int i;
- if (!name)
- return NULL;
- for (i = 0; i < ARRAY_SIZE(padding_algos); i++) {
- if (!strcmp(padding_algos[i].name, name))
- return &padding_algos[i];
- }
- return NULL;
- }
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