drivers/misc/mediatek/masp/asf/core/sec_signfmt_util.c

   1 //#include "sec_osal_light.h"
   2 #include "sec_signfmt_util.h"
   3
   4 /**************************************************************************
   5   *  GLOBAL VARIABLES
   6   **************************************************************************/
   7 unsigned int sec_crypto_hash_size[] =
   8 {
   9     CRYPTO_SIZE_UNKNOWN,
  10     SEC_SIZE_HASH_MD5,
  11     SEC_SIZE_HASH_SHA1,
  12     SEC_SIZE_HASH_SHA256,
  13     SEC_SIZE_HASH_SHA512
  14 };
  15
  16 unsigned int sec_crypto_sig_size[] =
  17 {
  18     CRYPTO_SIZE_UNKNOWN,
  19     SEC_SIZE_SIG_RSA512,
  20     SEC_SIZE_SIG_RSA1024,
  21     SEC_SIZE_SIG_RSA2048
  22 };
  23
  24 /**************************************************************************
  25  *  UTILITY FUNCTIONS
  26  **************************************************************************/
  27 unsigned int get_hash_size(SEC_CRYPTO_HASH_TYPE hash)
  28 {
  29     return sec_crypto_hash_size[hash];
  30 }
  31
  32 unsigned int get_signature_size(SEC_CRYPTO_SIGNATURE_TYPE sig)
  33 {
  34     return sec_crypto_sig_size[sig];
  35 }
  36
  37 unsigned char is_signfmt_v1(SEC_IMG_HEADER *hdr)
  38 {
  39     if( 0 == hdr->signature_length )
  40     {
  41         return true;
  42     }
  43
  44     return false;
  45 }
  46
  47 unsigned char is_signfmt_v2(SEC_IMG_HEADER *hdr)
  48 {
  49     if( 0 == hdr->signature_length )
  50     {
  51         return false;
  52     }
  53     else if( SEC_EXTENSION_MAGIC == hdr->sign_offset )
  54     {
  55         return false;
  56     }
  57
  58     return true;
  59 }
  60
  61 unsigned char is_signfmt_v3(SEC_IMG_HEADER *hdr)
  62 {
  63
  64     if( SEC_EXTENSION_MAGIC == hdr->sign_offset )
  65     {
  66         return true;
  67     }
  68
  69     return false;
  70 }
  71
  72
  73 unsigned char is_signfmt_v4(SEC_IMG_HEADER *hdr)
  74 {
  75     SEC_IMG_HEADER_V4 *v4_hdr = (SEC_IMG_HEADER_V4 *)hdr;
  76
  77     if( SEC_EXTENSION_MAGIC_V4 == v4_hdr->ext_magic)
  78     {
  79         return true;
  80     }
  81
  82     return false;
  83 }
  84