X-Git-Url: https://git.cryptolib.org/?p=avr-crypto-lib.git;a=blobdiff_plain;f=host%2Fbigint2_test.rb;fp=host%2Fbigint2_test.rb;h=df3ca3f0dff68922978afc14a51b60a3b72fc0b7;hp=0000000000000000000000000000000000000000;hb=cda2e9d578a68a57f3bd95c3ddbc5db78c7e3b36;hpb=55113fbb49edbc607a5ea5657be14e35296102c4

diff --git a/host/bigint2_test.rb b/host/bigint2_test.rb
new file mode 100644
index 0000000..df3ca3f
--- /dev/null
+++ b/host/bigint2_test.rb
@@ -0,0 +1,1156 @@
+#!/usr/bin/ruby
+# bigint_test.rb
+=begin
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2008, 2009  Daniel Otte (daniel.otte@rub.de)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+=end
+
+$debug = true
+$debug = false
+require 'rubygems'
+require 'serialport'
+require 'getopt/std'
+require 'fileutils'
+require 'date'
+$buffer_size = 0
+$conffile_check = Hash.new
+$conffile_check.default = 0
+
+def max(a, b)
+  return a > b ? a : b
+end
+
+def min(a, b)
+  return a < b ? a : b
+end
+
+################################################################################
+# readconfigfile                                                               #
+################################################################################
+
+def readconfigfile(fname, conf)
+  return conf if $conffile_check[fname]==1
+  $conffile_check[fname]=1
+  section = "default"
+  if ! File.exists?(fname)
+    return conf
+  end
+  file = File.open(fname, "r")
+  until file.eof
+    line = file.gets()
+	next if /[\s]*#/.match(line)
+	if m=/\[[\s]*([^\s]*)[\s]*\]/.match(line)
+	  section=m[1]
+	  conf[m[1]] = Hash.new
+	  next
+	end
+	next if ! /=/.match(line)
+	m=/[\s]*([^\s]*)[\s]*=[\s]*([^\s]*)/.match(line)
+	if m[1]=="include"
+	  Dir.glob(m[2]){ |fn| conf = readconfigfile(fn, conf) }
+	else
+  	  conf[section][m[1]] = m[2]
+	end
+  end
+  file.close()
+  return conf
+end
+
+################################################################################
+# expmod                                                                       #
+################################################################################
+
+def expmod(base, power, mod)
+  result = 1
+  while power > 0
+    result = (result * base) % mod if power & 1 == 1
+    base = (base * base) % mod
+    power >>= 1;
+  end
+  return result
+end
+
+################################################################################
+# gcdext                                                                 #
+################################################################################
+
+def gcdext(x,y)
+  return  [0, 0, 0] if(x == 0 || y == 0)
+  g=1
+  while(x&1==0 && y&1==0) do
+    x>>=1
+    y>>=1
+    g<<=1
+  end
+  u=x; v=y; a=1; b=0; c=0; d=1
+  begin
+    while(u&1==0) do
+      if(a%2==1 || b%2==1)
+        a += y
+        b -= x
+      end
+      u>>=1; a>>=1; b>>=1
+    end
+    while(v&1==0) do
+      if(c%2==1 || d%2==1)
+        c += y
+        d -= x
+      end
+      v>>=1; c>>=1; d>>=1;
+    end
+    if(u>=v)
+      u -= v; a-=c; b-=d
+    else
+      v -= u; c-=a; d-=b
+    end
+  end while(u!=0)
+  return[g*v, c, d]
+end
+
+################################################################################
+# reset_system                                                                 #
+################################################################################
+
+def reset_system
+  $sp.print("exit\r")
+  sleep 0.1
+  $sp.print("exit\r")
+  sleep 0.1
+end
+
+################################################################################
+# init_system                                                                  #
+################################################################################
+
+def init_system(test_prog)
+  begin
+    line = $sp.gets()
+  end while line!=nil
+  $sp.print("echo off \r")
+  print("DBG i: " + "echo off \r"+"\n") if $debug
+  sleep 0.1
+  $sp.print("#{test_prog}\r")
+  print("DBG i: " + "#{test_prog} \r"+"\n") if $debug
+  sleep 1
+end
+
+################################################################################
+# wait_for_prompt                                                                  #
+################################################################################
+
+def wait_for_prompt(prompt)
+  prompt = /[\s]*#{prompt}[\s]*/ if(prompt.class == String)
+  start_time = Time.now.to_i
+  acc = ''
+  begin
+    line = $sp.gets()
+    puts("DBG got (#{__LINE__}): "+line) if $debug && line
+    line = "" if line==nil
+    if /^(Error:|Crypto-VS).*/.match(line)
+      puts line
+      return false
+    end
+    if (Time.now.to_i- start_time) > $max_timeout
+      return false
+    end
+  acc += line
+  end while ! m=prompt.match(acc)
+  return m
+end
+
+################################################################################
+# screen_progress                                                              #
+################################################################################
+def screen_progress(v)
+  if $linepos == 0
+    printf("\n%5d [%04d]: ", $testno, $size)
+  end
+  putc((v)?('*'):('!'))
+  $testno += 1
+  $linepos = ($linepos+1) % $linewidth
+end
+
+################################################################################
+# add_test                                                                     #
+################################################################################
+
+def add_test(a,b)
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([-]?[0-9a-fA-F]*)[\s]+\+[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && c_ == (a+b))
+    $logfile.printf("[pass (%d)]: %s\n", $testno, line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s) (%d)]: %s", 
+      (a == a_) ? "" : "a", 
+      (b == b_) ? "" : "b", 
+      (c_ == a + b) ?  "" : "c", $testno, line)
+    $logfile.printf(" ; should %s + %s = %s\n", a.to_s(16), b.to_s(16), (a+b).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# sub_test                                                                     #
+################################################################################
+
+def sub_test(a, b)
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([-]?[0-9a-fA-F]*)[\s]+\-[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && c_ == (a - b))
+    $logfile.printf("[pass (%d)]: %s\n", $testno, line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s) (%d)]: %s", 
+      (a == a_) ? "" : "a", 
+      (b == b_) ? "" : "b", 
+      (c_ == a - b) ? "" : "c", $testno, line)
+    $logfile.printf(" ; should %s - %s = %s\n", a.to_s(16), b.to_s(16), (a - b).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# mul_test                                                                     #
+################################################################################
+
+def mul_test(a,b)
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([+-]?[0-9a-fA-F]*)[\s]+\*[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && c_ == (a*b))
+    $logfile.printf("[pass]: %s\n", line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s)]: %s", (a==a_)?"":"a", (b==b_)?"":"b", (c_==a*b)?"":"c",line)
+    $logfile.printf(" ; should %s * %s = %s\n", a.to_s(16), b.to_s(16), (a*b).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# add_scale_test                                                               #
+################################################################################
+def add_scale_test_dummy(a, b, scale)
+  should = a + (b<<(8*scale))
+  printf("[dummy] %s + %s <<8*%04x = %s\n",a.to_s(16), b.to_s(16), scale, should.to_s(16))
+end
+
+def add_scale_test(a, b, scale)
+  m = wait_for_prompt("enter a:")
+  return false if !m 
+  puts("DBG put (#{__LINE__}): "+a.to_s(16)+" ") if $debug
+  $sp.print(a.to_s(16)+" ")
+  m = wait_for_prompt("enter b:")
+  return false if !m 
+  puts("DBG put (#{__LINE__}): "+b.to_s(16)+" ") if $debug
+  $sp.print(b.to_s(16)+" ")
+  m = wait_for_prompt("enter scale:")
+  return false if !m 
+  puts("DBG put (#{__LINE__}): "+scale.to_s(10)+" ") if $debug
+  $sp.print(scale.to_s(10)+"\r")
+  should = a + (b<<(8*scale))
+  m = wait_for_prompt(/[\s]*([-]?[0-9a-fA-F]+)[\s]+\+[\s]+([+-]?[0-9a-fA-F]+)[\s]*<<8\*[\s]*([+-]?[0-9a-fA-F]+)[\s]*=[\s]*([+-]?[0-9a-fA-F]+)/)
+  if !m 
+    $logfile.printf("[fail (CRASH)]:")
+    $logfile.printf(" ; should %s + %s << 8*%s = %s\n", a.to_s(16), b.to_s(16), scale.to_s(16), should.to_s(16))
+    return false
+  end 
+  line = m[0]
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  s_ = m[3].to_i(16)
+  c_ = m[4].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && s_ == scale && c_ == should )
+    $logfile.printf("[pass]: %s\n", line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s%s)]: %s", (a==a_)?"":"a", (b==b_)?"":"b", (scale==s_)?"":"s",(c_==should)?"":"c",line)
+    $logfile.printf(" ; should %s + %s << 8*%s = %s\n", a.to_s(16), b.to_s(16), scale.to_s(16), should.to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# square_test                                                                  #
+################################################################################
+
+def square_test(a)
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([+-]?[0-9a-fA-F]*)[\s]*\*\*2[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+  a_ = m[1].to_i(16)
+  c_ = m[2].to_i(16)
+  line.chomp!
+  if(a_== a && c_ == (a**2))
+    $logfile.printf("[pass]: %s\n", line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s)]: %s", (a==a_)?"":"a", (c_==a**2)?"":"c",line)
+    $logfile.printf(" ; should %s **2 = %s\n", a.to_s(16), (a**2).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# reduce_test                                                                  #
+################################################################################
+
+def reduce_test(a,b)
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  line=''
+  begin
+    line_tmp = $sp.gets()
+    line_tmp = '' if line_tmp==nil
+    line += line_tmp
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([+-]?[0-9a-fA-F]*)[\s]+%[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]+)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  line.strip!
+  if(a_== a && b_ == b && c_ == (a%b))
+    $logfile.printf("[pass (%d)]: %s\n", $testno, line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s) (%d)]: %s", 
+      (a == a_) ? "" : "a", 
+      (b == b_) ? "" : "b", 
+      (c_ == a % b) ? "" : "c", $testno, line)
+    $logfile.printf(" ; should %s %% %s = %s\n", a.to_s(16), b.to_s(16), (a % b).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# mulmod_test                                                                  #
+################################################################################
+
+def mulmod_test(a,b,c)
+  begin
+    printf("[testing] mulmod(%#x, %#x, %#x)\n",a,b,c) if $debug
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter c:[\s]*/.match(line)
+  $sp.print(c.to_s(16)+" ")
+  line=''
+  begin
+    line_tmp = $sp.gets()
+    line_tmp = '' if line_tmp==nil
+    line += line_tmp
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+    m = /[\s]*\([\s]*([+-]?[0-9a-fA-F]*)[\s]*\*[\s]*([+-]?[0-9a-fA-F]*)[\s]*\)[\s]+%[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]+)/.match(line)
+    puts("DBG: line did not match pattern (" + line + ")") if !m && $debug
+  end while ! m 
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  d_ = m[4].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && c_ == c && d_ == (a * b % c) )
+    $logfile.printf("[pass]: %s\n", line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s%s)]: %s", (a == a_) ? '' : 'a', (b == b_) ? '' : 'b', (c_ == c) ? '' : 'c', (d_== (a * b % c)) ? '' : 'd',line)
+    $logfile.printf(" ; should (%s * %s) %% %s = %s\n", a.to_s(16), b.to_s(16), c.to_s(16), (a * b % c).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# expmod_test                                                                  #
+################################################################################
+
+def expmod_test(a,b,c)
+  begin
+    printf("[testing] expmod(%#x, %#x, %#x)\n",a,b,c) if $debug
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter c:[\s]*/.match(line)
+  $sp.print(c.to_s(16)+" ")
+  line=''
+  begin
+    line_tmp = $sp.gets()
+    line_tmp = '' if line_tmp == nil
+    line += line_tmp
+    puts("DBG got: "+line) if $debug
+    if /^Error:/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/[\s]*([+-]?[0-9a-fA-F]+)\*\*([+-]?[0-9a-fA-F]+)[\s]+%[\s]+([+-]?[0-9a-fA-F]+)[\s]*=[\s]*([+-]?[0-9a-fA-F]+)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  d_ = m[4].to_i(16)
+  line.chomp!
+  if(a_== a && b_ == b && c_ == c && d_ ==expmod(a,b,c) )
+    $logfile.printf("[pass]: %s\n", line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s%s)]: %s", (a==a_)?'':'a', (b==b_)?'':'b', (c_==c)?'':'c', (d_==expmod(a,b,c))?'':'d',line)
+    $logfile.printf(" ; should %s**%s %% %s = %s\n", a.to_s(16), b.to_s(16), c.to_s(16), expmod(a,b,c).to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# gcdext_test                                                                  #
+################################################################################
+
+def gcdext_test(a,b)
+  $logfile.printf("[testing] gcdext(%s, %s)\n", a.to_s(16), b.to_s(16))
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter a:[\s]*/.match(line)
+  $sp.print(a.to_s(16)+" ")
+  begin
+    line = $sp.gets()
+    line = "" if line==nil
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! /[\s]*enter b:[\s]*/.match(line)
+  $sp.print(b.to_s(16)+" ")
+  line=''
+  begin
+    line_tmp = $sp.gets()
+    line_tmp = '' if line_tmp==nil
+    line = ''  if line.end_with?('\n')
+    line += line_tmp
+    puts("DBG got: "+line) if $debug
+    if /^Error:.*/.match(line)
+      puts line
+      return false
+    end
+  end while ! m=/gcdext\([\s]*([+-]?[0-9a-fA-F]*)[\s]*,[\s]*([+-]?[0-9a-fA-F]*)[\s]*\)[\s]*=> a = ([+-]?[0-9a-fA-F]+); b = ([+-]?[0-9a-fA-F]+); gcd = ([+-]?[0-9a-fA-F]+)/.match(line)
+  a_ = m[1].to_i(16)
+  b_ = m[2].to_i(16)
+  c_ = m[3].to_i(16)
+  d_ = m[4].to_i(16)
+  e_ = m[5].to_i(16)
+  line.chomp!
+  line.gsub!("\r",'')
+  line.gsub!("\n",'')
+  ref = gcdext(a,b)
+  if(a_== a && b_ == b && c_ == ref[1] && d_ == ref[2] && e_== ref[0])
+    $logfile.printf("[pass (%d)]: %s\n", $testno, line)
+    return true
+  else
+    $logfile.printf("[fail (%s%s%s%s%s) (%d)]: %s", 
+      (a == a_) ? '' : 'a', 
+      (b == b_) ? '' : 'b', 
+      (c_ == ref[1]) ? '' : 'c', 
+      (d_ == ref[2]) ? '' : 'd', 
+      (e_ == ref[0]) ? '' : 'e', $testno, line)
+    $logfile.printf(" ; should gcdext( %s, %s) => a = %s; b = %s; gcd = %s\n",
+       a.to_s(16), b.to_s(16), ref[1].to_s(16), ref[2].to_s(16), ref[0].to_s(16))
+    return false
+  end
+  return false
+end
+
+################################################################################
+# run_test_add                                                                 #
+################################################################################
+
+def run_test_add(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256**length_a_B)
+      b = rand(256**length_a_B)
+      v = add_test(a, b)
+      screen_progress(v)
+      v = add_test(b, a)
+      screen_progress(v)
+    end
+    (0..16).each do |i|
+      b_size = rand(length_b_B+1)
+      a = rand(256**length_a_B)
+      b = rand(256**b_size)
+      v = add_test(a, b)
+      screen_progress(v)      
+      v = add_test(b, a)
+      screen_progress(v)
+    end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_sub                                                                 #
+################################################################################
+
+def run_test_sub(skip = 0)
+  length_a_B = skip + 1
+  length_b_B = skip + 1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256 ** length_a_B)
+      b = rand(a + 1)
+      v = sub_test(a, b)
+      screen_progress(v)
+    end
+    (0..16).each do |i|
+      b_size = rand(length_b_B + 1)
+      a = rand(256 ** length_a_B)
+      b = rand(min(256 ** b_size, a + 1))
+      v = sub_test(a, b)
+      screen_progress(v)
+    end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B < 4096 / 8
+end
+
+
+################################################################################
+# run_test_add_scale                                                           #
+################################################################################
+
+def run_test_add_scale(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..4).each do |i|
+      scales = [0, 300]
+      16.times { scales << rand(301) }
+      scales.sort!
+      scales.each do |scale|
+        a = rand(256**length_a_B)
+        b = rand(256**length_a_B)
+        v = add_scale_test(a, b, scale)
+        screen_progress(v)
+        v = add_scale_test(b, a, scale)
+        screen_progress(v)
+      end
+    end
+    (0..4).each do |i|
+      scales = [0, 300]
+      16.times { scales << rand(301) }
+      scales.sort!
+      scales.each do |scale|
+        b_size = rand(length_b_B+1)+1
+        a = rand(256**length_a_B)
+        b = rand(256**b_size)
+        v = add_scale_test(a, b, scale)
+        screen_progress(v)      
+        v = add_scale_test(b, a, scale)
+        screen_progress(v)
+      end
+    end
+    length_a_B += 10
+    length_b_B += 10
+  end while length_a_B<4096/8
+end
+
+def run_test_add_scale_dummy(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..4).each do |i|
+      scales = [0, 300]
+      16.times { scales << rand(301) }
+      scales.sort!
+      scales.each do |scale|
+        a = rand(256**length_a_B)
+        b = rand(256**length_a_B)
+        v = add_scale_test_dummy(a, b, scale)
+        v = add_scale_test_dummy(b, a, scale)
+      end
+    end
+    (0..4).each do |i|
+      scales = [0, 300]
+      16.times { scales << rand(301) }
+      scales.sort!
+      scales.each do |scale|
+        b_size = rand(length_b_B+1)
+        a = rand(256**length_a_B)
+        b = rand(256**b_size)
+        v = add_scale_test_dummy(a, b, scale)
+        v = add_scale_test_dummy(b, a, scale)
+      end
+    end
+    length_a_B += 10
+    length_b_B += 10
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_mul                                                                 #
+################################################################################
+
+def run_test_mul(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      s_a = rand(2)*2-1
+      s_b = rand(2)*2-1
+      a = rand(256**length_a_B) * s_a
+      b = rand(256**length_a_B) * s_b
+      v = mul_test(a, b)
+      screen_progress(v)
+      v = mul_test(b, a)
+      screen_progress(v)
+    end
+    (0..16).each do |i|
+      s_a = rand(2)-1
+      s_b = rand(2)-1
+      b_size = rand(length_b_B+1)
+      a = rand(256**length_a_B) * s_a
+      b = rand(256**b_size) * s_b
+      v = mul_test(a, b)
+      screen_progress(v)      
+      v = mul_test(b, a)
+      screen_progress(v)
+    end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_mul_word                                                                 #
+################################################################################
+
+def run_test_mul_word(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..255).each do |i|
+      a = rand(256 ** length_a_B) 
+      v = mul_test(a, i)
+      screen_progress(v)   
+    end
+    length_a_B += 1
+  end while length_a_B < 4096 / 8
+end
+
+################################################################################
+# run_test_square                                                              #
+################################################################################
+
+def run_test_square(skip=0)
+  length_a_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256**length_a_B)
+      v = square_test(a)
+      screen_progress(v)
+    end
+    length_a_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_reduce                                                              #
+################################################################################
+
+def run_test_reduce(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256**length_a_B)
+      b = rand(256**length_a_B)+1
+      v = reduce_test(a, b)
+      screen_progress(v)
+      end
+    (0..16).each do |i|
+      b_size = rand(length_b_B+1)
+      a = rand(256**length_a_B)
+      b = rand(256**b_size)+1 
+      v = reduce_test(a, b)
+      screen_progress(v)      
+      end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_expmod                                                              #
+################################################################################
+
+def run_test_expmod(skip=0)
+  length_a_B = skip + 1
+  length_b_B = skip + 1
+  length_c_B = skip + 1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256 ** length_a_B)
+      b = rand(256 ** length_b_B) + 1
+      c = rand(256 ** length_c_B) + 1
+      v = expmod_test(a, b, c)
+      screen_progress(v)
+      end
+    (0..16).each do |i|
+      b_size = rand(length_b_B+1)
+      a = rand(256 ** length_a_B)
+      b = rand(256 ** b_size) + 1 
+      c = rand(256 ** b_size) + 1
+      v = expmod_test(a, b, c)
+      screen_progress(v)      
+      end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_expmodmont                                                          #
+################################################################################
+
+def run_test_expmodmont(skip=0)
+  length_a_B = skip + 1
+  length_b_B = skip + 1
+  length_c_B = skip + 1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256 ** length_a_B)
+      b = rand(256 ** length_b_B) + 1
+      c = rand(256 ** length_c_B) / 2 * 2 +1
+      v = expmod_test(a, b, c)
+      screen_progress(v)
+      end
+    (0..16).each do |i|
+      b_size = rand(length_b_B + 10)
+      a = rand(256 ** length_a_B)
+      b = rand(256 ** b_size) + 1 
+      c = rand(256 ** b_size) / 2 * 2 +1
+      v = expmod_test(a, b, c)
+      screen_progress(v)      
+      end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_mulmod                                                              #
+################################################################################
+
+def run_test_mulmod(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  length_c_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256**length_a_B)
+      b = rand(256**length_b_B)
+      c = (rand(256**length_c_B) / 2 * 2) + 1
+      a %= c
+      b %= c
+      v = mulmod_test(a, b, c)
+      screen_progress(v)
+      end
+    (0..16).each do |i|
+      b_size = rand(length_b_B+1)
+      a = rand(256**length_a_B)
+      b = rand(256**b_size)
+      c = (rand(256**length_c_B) / 2 * 2) + 1
+      a %= c
+      b %= c
+      v = mulmod_test(a, b, c)
+      screen_progress(v)      
+      end
+    length_a_B += 1
+    length_b_B += 1
+    length_c_B += 1
+  end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_gcdext                                                              #
+################################################################################
+
+def run_test_gcdext(skip=0)
+  length_a_B = skip+1
+  length_b_B = skip+1
+  begin
+    $size = length_a_B
+    (0..16).each do |i|
+      a = rand(256**length_a_B)
+      b = rand(256**length_a_B)+1
+      v = gcdext_test(a, b)
+      $logfile.flush()
+      screen_progress(v)
+      end
+    (0..16).each do |i|
+      b_size = rand(length_b_B+1)
+      a = rand(256**length_a_B)
+      b = rand(256**b_size)+1 
+      v = gcdext_test(a, b)
+      $logfile.flush()
+      screen_progress(v)      
+      end
+    length_a_B += 1
+    length_b_B += 1
+  end while length_a_B<4096/8
+end
+
+def init_serialport(conf)
+  puts("serial port interface version: " + SerialPort::VERSION);
+  $linewidth = 64
+  $linepos = 0
+  $testno = 0
+  params = { "baud"       => conf["PORT"]["baud"].to_i,
+              "data_bits" => conf["PORT"]["databits"].to_i,
+              "stop_bits" => conf["PORT"]["stopbits"].to_i,
+              "parity"    => SerialPort::NONE }
+  params["paraty"] = SerialPort::ODD   if conf["PORT"]["paraty"].downcase == "odd"
+  params["paraty"] = SerialPort::EVEN  if conf["PORT"]["paraty"].downcase == "even"
+  params["paraty"] = SerialPort::MARK  if conf["PORT"]["paraty"].downcase == "mark"
+  params["paraty"] = SerialPort::SPACE if conf["PORT"]["paraty"].downcase == "space"
+  
+  puts("\nPort: "+conf["PORT"]["port"]+"@"    +
+                  params["baud"].to_s      +
+                  " "                      +
+                  params["data_bits"].to_s +
+                  conf["PORT"]["paraty"][0,1].upcase +
+                  params["stop_bits"].to_s +
+                  "\n")
+  
+  $sp = SerialPort.new(conf["PORT"]["port"], params)
+  
+  $sp.read_timeout = 100; # 5 minutes
+  $sp.flow_control = SerialPort::SOFT
+  
+  reset_system()
+end
+
+################################################################################
+# MAIN                                                                         #
+################################################################################
+
+opts = Getopt::Std.getopts("r:s:f:i:a:hd")
+
+conf = Hash.new
+conf = readconfigfile("/etc/testport.conf", conf)
+conf = readconfigfile("~/.testport.conf", conf)
+conf = readconfigfile("testport.conf", conf)
+conf = readconfigfile(opts["f"], conf) if opts["f"]
+
+#puts conf.inspect
+init_serialport(conf)
+
+  $max_timeout = 5 * 60
+
+if opts['d']
+  $debug = true
+end
+
+if opts['r']
+  random_seed = opts['r'].to_i(0)
+else
+  random_seed = 0xdeadbeef
+end
+
+logfilename = conf['PORT']['testlogbase']+'bigint.txt'
+if File.exists?(logfilename)
+  i=1
+  begin
+    logfilename = sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i,'.txt')
+    i+=1
+  end while(File.exists?(logfilename))
+  while(i>2) do
+    n1 = sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i-2,'.txt')
+    n2 = sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i-1,'.txt')
+    File.rename(n1, n2)
+#    printf("%s -> %s\n", n1, n2) 
+    i-=1
+  end
+  n1 = sprintf('%s%s', conf['PORT']['testlogbase'],'bigint.txt')
+  n2 = sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',1,'.txt')
+  File.rename(n1, n2) 
+  printf("%s -> %s\n", n1, n2)  
+  logfilename = conf['PORT']['testlogbase']+'bigint.txt' 
+end
+$logfile = File.open(logfilename, 'w')
+printf("logfile: %s\n", logfilename)
+$logfile.sync = true
+$logfile.printf("bigint test from: %s\n", Time.now.to_s)
+$logfile.printf("skip = %s\n", opts['s']) if opts['s']
+$logfile.printf("seed = 0x%X\n", random_seed)
+
+tests = Hash.new
+tests['a'] = proc {|x| run_test_add(x) }
+tests['b'] = proc {|x| run_test_sub(x) }
+tests['m'] = proc {|x| run_test_mul(x) }
+tests['M'] = proc {|x| run_test_mulmod(x) }
+tests['n'] = proc {|x| run_test_mul_word(x) }
+tests['x'] = proc {|x| run_test_add_scale(x) }
+tests['s'] = proc {|x| run_test_square(x) }
+tests['r'] = proc {|x| run_test_reduce(x) }
+tests['e'] = proc {|x| run_test_expmod(x) }
+tests['E'] = proc {|x| run_test_expmodmont(x) }
+tests['g'] = proc {|x| run_test_gcdext(x) }
+init_str = Hash.new
+init_str['a'] = 'add-test'
+init_str['b'] = 'sub-test'
+init_str['x'] = 'add-scale-test'
+init_str['m'] = 'mul-test'
+init_str['M'] = 'mul-mont-test'
+init_str['n'] = 'mul-word-test'
+init_str['s'] = 'square-test'
+init_str['r'] = 'reduce-test'
+init_str['e'] = 'expmod-test'
+init_str['E'] = 'expmod-mont-test'
+init_str['g'] = 'gcdext-test'
+
+srand(random_seed)
+
+if opts['a']
+  opts['a'].each_char do |x|
+    if tests[x]
+      puts init_str[x]
+      init_system(init_str[x])
+      tests[x].call(opts['s']?opts['s'].to_i():0) 
+    else
+      puts "no test defined for '#{x}'"
+    end  
+  end
+else
+  'amsrMeE'.each_char do |x|
+    if tests[x]
+      puts init_str[x]
+      init_system(init_str[x])
+      tests[x].call(opts['s']?opts['s'].to_i():0) 
+    else
+      puts "no test defined for '#{x}'"
+    end  
+  end
+end
+1
+
+$logile.close()