uboot/tools/image-sig-host.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (c) 2013, Google Inc.
   4 */
   5
   6#include "mkimage.h"
   7#include <fdt_support.h>
   8#include <time.h>
   9#include <linux/libfdt.h>
  10#include <image.h>
  11#include <u-boot/ecdsa.h>
  12#include <u-boot/rsa.h>
  13#include <u-boot/hash-checksum.h>
  14
  15struct checksum_algo checksum_algos[] = {
  16        {
  17                .name = "sha1",
  18                .checksum_len = SHA1_SUM_LEN,
  19                .der_len = SHA1_DER_LEN,
  20                .der_prefix = sha1_der_prefix,
  21                .calculate_sign = EVP_sha1,
  22                .calculate = hash_calculate,
  23        },
  24        {
  25                .name = "sha256",
  26                .checksum_len = SHA256_SUM_LEN,
  27                .der_len = SHA256_DER_LEN,
  28                .der_prefix = sha256_der_prefix,
  29                .calculate_sign = EVP_sha256,
  30                .calculate = hash_calculate,
  31        },
  32        {
  33                .name = "sha384",
  34                .checksum_len = SHA384_SUM_LEN,
  35                .der_len = SHA384_DER_LEN,
  36                .der_prefix = sha384_der_prefix,
  37                .calculate_sign = EVP_sha384,
  38                .calculate = hash_calculate,
  39        },
  40        {
  41                .name = "sha512",
  42                .checksum_len = SHA512_SUM_LEN,
  43                .der_len = SHA512_DER_LEN,
  44                .der_prefix = sha512_der_prefix,
  45                .calculate_sign = EVP_sha512,
  46                .calculate = hash_calculate,
  47        },
  48};
  49
  50struct crypto_algo crypto_algos[] = {
  51        {
  52                .name = "rsa2048",
  53                .key_len = RSA2048_BYTES,
  54                .sign = rsa_sign,
  55                .add_verify_data = rsa_add_verify_data,
  56                .verify = rsa_verify,
  57        },
  58        {
  59                .name = "rsa4096",
  60                .key_len = RSA4096_BYTES,
  61                .sign = rsa_sign,
  62                .add_verify_data = rsa_add_verify_data,
  63                .verify = rsa_verify,
  64        },
  65        {
  66                .name = "ecdsa256",
  67                .key_len = ECDSA256_BYTES,
  68                .sign = ecdsa_sign,
  69                .add_verify_data = ecdsa_add_verify_data,
  70                .verify = ecdsa_verify,
  71        },
  72};
  73
  74struct padding_algo padding_algos[] = {
  75        {
  76                .name = "pkcs-1.5",
  77                .verify = padding_pkcs_15_verify,
  78        },
  79        {
  80                .name = "pss",
  81                .verify = padding_pss_verify,
  82        }
  83};
  84
  85struct checksum_algo *image_get_checksum_algo(const char *full_name)
  86{
  87        int i;
  88        const char *name;
  89
  90        for (i = 0; i < ARRAY_SIZE(checksum_algos); i++) {
  91                name = checksum_algos[i].name;
  92                /* Make sure names match and next char is a comma */
  93                if (!strncmp(name, full_name, strlen(name)) &&
  94                    full_name[strlen(name)] == ',')
  95                        return &checksum_algos[i];
  96        }
  97
  98        return NULL;
  99}
 100
 101struct crypto_algo *image_get_crypto_algo(const char *full_name)
 102{
 103        int i;
 104        const char *name;
 105
 106        /* Move name to after the comma */
 107        name = strchr(full_name, ',');
 108        if (!name)
 109                return NULL;
 110        name += 1;
 111
 112        for (i = 0; i < ARRAY_SIZE(crypto_algos); i++) {
 113                if (!strcmp(crypto_algos[i].name, name))
 114                        return &crypto_algos[i];
 115        }
 116
 117        return NULL;
 118}
 119
 120struct padding_algo *image_get_padding_algo(const char *name)
 121{
 122        int i;
 123
 124        if (!name)
 125                return NULL;
 126
 127        for (i = 0; i < ARRAY_SIZE(padding_algos); i++) {
 128                if (!strcmp(padding_algos[i].name, name))
 129                        return &padding_algos[i];
 130        }
 131
 132        return NULL;
 133}
 134