int32_t verify_cert_chain(int **certificate_chain,int type)

{
  int32_t iVar1;
  int iVar2;
  char *type_str;
  int **ppiVar3;

  type_str = "XS";
  if (type == 0x2) {
    type_str = "CP";
  }
  ppiVar3 = certificate_chain + 0x5;
  while( true ) {
    if ((type != 0x0) && (iVar1 = memcmp(*certificate_chain + 0x13,type_str,0x2), iVar1 != 0x0)) {
      return -0x1;
    }
  /* check if this is the root cert */
    iVar2 = strcmp((char *)(*certificate_chain + 0x3),"Root");
    if (iVar2 == 0x0) {
  /* Pass NULL as second arg to check Root signature */
      iVar1 = verify_cert_signature(*certificate_chain,NULL);
      return iVar1;
    }
  /* Pass next cert in to verify previous cert */
    iVar1 = verify_cert_signature(*certificate_chain,certificate_chain[0x1]);
    if (iVar1 != 0x0) break;
    certificate_chain = certificate_chain + 0x1;
    if ((int)ppiVar3 <= (int)certificate_chain) {
      return 0x0;
    }
  }
  return -0x1;
}