tools/image-sig-host.c

   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
  15 struct 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
  50 struct 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
  74 struct 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
  85 struct 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
 101 struct 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
 120 struct 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 }