144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2013, Google Inc.
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*/
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#include <common.h>
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#include <log.h>
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#include <malloc.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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#include <image.h>
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#include <u-boot/ecdsa.h>
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#include <u-boot/rsa.h>
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#include <u-boot/hash-checksum.h>
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#define IMAGE_MAX_HASHED_NODES 100
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struct checksum_algo checksum_algos[] = {
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{
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.name = "sha1",
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.checksum_len = SHA1_SUM_LEN,
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.der_len = SHA1_DER_LEN,
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.der_prefix = sha1_der_prefix,
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.calculate = hash_calculate,
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},
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{
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.name = "sha256",
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.checksum_len = SHA256_SUM_LEN,
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.der_len = SHA256_DER_LEN,
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.der_prefix = sha256_der_prefix,
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.calculate = hash_calculate,
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},
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#ifdef CONFIG_SHA384
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{
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.name = "sha384",
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.checksum_len = SHA384_SUM_LEN,
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.der_len = SHA384_DER_LEN,
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.der_prefix = sha384_der_prefix,
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.calculate = hash_calculate,
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},
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#endif
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#ifdef CONFIG_SHA512
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{
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.name = "sha512",
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.checksum_len = SHA512_SUM_LEN,
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.der_len = SHA512_DER_LEN,
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.der_prefix = sha512_der_prefix,
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.calculate = hash_calculate,
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},
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#endif
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};
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struct padding_algo padding_algos[] = {
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{
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.name = "pkcs-1.5",
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.verify = padding_pkcs_15_verify,
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},
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#ifdef CONFIG_FIT_RSASSA_PSS
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{
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.name = "pss",
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.verify = padding_pss_verify,
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}
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#endif /* CONFIG_FIT_RSASSA_PSS */
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};
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struct checksum_algo *image_get_checksum_algo(const char *full_name)
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{
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int i;
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const char *name;
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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static bool done;
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if (!done) {
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done = true;
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for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
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checksum_algos[i].name += gd->reloc_off;
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checksum_algos[i].calculate += gd->reloc_off;
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}
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}
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#endif
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for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
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name = checksum_algos[i].name;
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/* Make sure names match and next char is a comma */
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if (!strncmp(name, full_name, strlen(name)) &&
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full_name[strlen(name)] == ',')
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return &checksum_algos[i];
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}
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return NULL;
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}
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struct crypto_algo *image_get_crypto_algo(const char *full_name)
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{
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struct crypto_algo *crypto, *end;
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const char *name;
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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static bool done;
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if (!done) {
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crypto = ll_entry_start(struct crypto_algo, cryptos);
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end = ll_entry_end(struct crypto_algo, cryptos);
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for (; crypto < end; crypto++) {
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crypto->name += gd->reloc_off;
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crypto->verify += gd->reloc_off;
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}
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}
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#endif
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/* Move name to after the comma */
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name = strchr(full_name, ',');
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if (!name)
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return NULL;
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name += 1;
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crypto = ll_entry_start(struct crypto_algo, cryptos);
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end = ll_entry_end(struct crypto_algo, cryptos);
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for (; crypto < end; crypto++) {
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if (!strcmp(crypto->name, name))
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return crypto;
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}
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/* Not found */
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return NULL;
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}
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struct padding_algo *image_get_padding_algo(const char *name)
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{
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int i;
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if (!name)
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return NULL;
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for (i = 0; i < ARRAY_SIZE(padding_algos); i++) {
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if (!strcmp(padding_algos[i].name, name))
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return &padding_algos[i];
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}
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return NULL;
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}
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