propagate from branch 'net.randombit.botan' (head 85596a0b1fbee6696261d36def7dad742375f7d9)

            to branch 'net.randombit.botan.remove-libstate' (head faf75eec422a3eb6108748315724fb6ac217dede)

23 files changed, 185 insertions, 454 deletions

diff --git a/src/big_rand.cpp b/src/big_rand.cpp
index c18aadfeb..264f5dcb3 100644
--- a/src/big_rand.cpp
+++ b/src/big_rand.cpp
@@ -6,7 +6,7 @@
 #include <botan/bigint.h>
 #include <botan/parsing.h>
 #include <botan/numthry.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 
 namespace Botan {
 
@@ -36,7 +36,7 @@ void BigInt::randomize(u32bit bitsize)
    else
       {
       SecureVector<byte> array((bitsize + 7) / 8);
-      Global_RNG::randomize(array, array.size());
+      global_state().randomize(array, array.size());
       if(bitsize % 8)
          array[0] &= 0xFF >> (8 - (bitsize % 8));
       array[0] |= 0x80 >> ((bitsize % 8) ? (8 - bitsize % 8) : 0);
diff --git a/src/buf_es.cpp b/src/buf_es.cpp
index bf5a9732e..9f7be3e9b 100644
--- a/src/buf_es.cpp
+++ b/src/buf_es.cpp
@@ -74,14 +74,6 @@ void Buffered_EntropySource::add_bytes(u64bit entropy)
    }
 
 /*************************************************
-* Add entropy to the internal buffer             *
-*************************************************/
-void Buffered_EntropySource::add_timestamp()
-   {
-   add_bytes(system_clock());
-   }
-
-/*************************************************
 * Take entropy from the internal buffer          *
 *************************************************/
 u32bit Buffered_EntropySource::copy_out(byte out[], u32bit length,
diff --git a/src/charset.cpp b/src/charset.cpp
index 3025794ff..4ebf37abf 100644
--- a/src/charset.cpp
+++ b/src/charset.cpp
@@ -6,20 +6,119 @@
 #include <botan/charset.h>
 #include <botan/hex.h>
 #include <botan/base64.h>
-#include <botan/libstate.h>
+#include <botan/parsing.h>
 #include <cctype>
 
 namespace Botan {
 
 namespace Charset {
 
+namespace {
+
+/*************************************************
+* Convert from UCS-2 to ISO 8859-1               *
+*************************************************/
+std::string ucs2_to_latin1(const std::string& ucs2)
+   {
+   if(ucs2.size() % 2 == 1)
+      throw Decoding_Error("UCS-2 string has an odd number of bytes");
+
+   std::string latin1;
+
+   for(u32bit j = 0; j != ucs2.size(); j += 2)
+      {
+      const byte c1 = ucs2[j];
+      const byte c2 = ucs2[j+1];
+
+      if(c1 != 0)
+         throw Decoding_Error("UCS-2 has non-Latin1 characters");
+
+      latin1 += static_cast<char>(c2);
+      }
+
+   return latin1;
+   }
+
+/*************************************************
+* Convert from UTF-8 to ISO 8859-1               *
+*************************************************/
+std::string utf8_to_latin1(const std::string& utf8)
+   {
+   std::string iso8859;
+
+   u32bit position = 0;
+   while(position != utf8.size())
+      {
+      const byte c1 = static_cast<byte>(utf8[position++]);
+
+      if(c1 <= 0x7F)
+         iso8859 += static_cast<char>(c1);
+      else if(c1 >= 0xC0 && c1 <= 0xC7)
+         {
+         if(position == utf8.size())
+            throw Decoding_Error("UTF-8: sequence truncated");
+
+         const byte c2 = static_cast<byte>(utf8[position++]);
+         const byte iso_char = ((c1 & 0x07) << 6) | (c2 & 0x3F);
+
+         if(iso_char <= 0x7F)
+            throw Decoding_Error("UTF-8: sequence longer than needed");
+
+         iso8859 += static_cast<char>(iso_char);
+         }
+      else
+         throw Decoding_Error("UTF-8: Unicode chars not in Latin1 used");
+      }
+
+   return iso8859;
+   }
+
+/*************************************************
+* Convert from ISO 8859-1 to UTF-8               *
+*************************************************/
+std::string latin1_to_utf8(const std::string& iso8859)
+   {
+   std::string utf8;
+   for(u32bit j = 0; j != iso8859.size(); ++j)
+      {
+      const byte c = static_cast<byte>(iso8859[j]);
+
+      if(c <= 0x7F)
+         utf8 += static_cast<char>(c);
+      else
+         {
+         utf8 += static_cast<char>((0xC0 | (c >> 6)));
+         utf8 += static_cast<char>((0x80 | (c & 0x3F)));
+         }
+      }
+   return utf8;
+   }
+
+}
+
 /*************************************************
 * Perform character set transcoding              *
 *************************************************/
 std::string transcode(const std::string& str,
                       Character_Set to, Character_Set from)
    {
-   return global_state().transcode(str, to, from);
+   if(to == LOCAL_CHARSET)
+      to = LATIN1_CHARSET;
+   if(from == LOCAL_CHARSET)
+      from = LATIN1_CHARSET;
+
+   if(to == from)
+      return str;
+
+   if(from == LATIN1_CHARSET && to == UTF8_CHARSET)
+      return latin1_to_utf8(str);
+   if(from == UTF8_CHARSET && to == LATIN1_CHARSET)
+      return utf8_to_latin1(str);
+   if(from == UCS2_CHARSET && to == LATIN1_CHARSET)
+      return ucs2_to_latin1(str);
+
+   throw Invalid_Argument("Unknown transcoding operation from " +
+                          to_string(from) + " to " + to_string(to));
    }
 
 /*************************************************
diff --git a/src/def_char.cpp b/src/def_char.cpp
deleted file mode 100644
index 512647eb2..000000000
--- a/src/def_char.cpp
+++ /dev/null
@@ -1,121 +0,0 @@
-/*************************************************
-* Default Character Set Handling Source File     *
-* (C) 1999-2007 Jack Lloyd                       *
-*************************************************/
-
-#include <botan/def_char.h>
-#include <botan/exceptn.h>
-#include <botan/parsing.h>
-
-namespace Botan {
-
-namespace {
-
-/*************************************************
-* Convert from UCS-2 to ISO 8859-1               *
-*************************************************/
-std::string ucs2_to_latin1(const std::string& ucs2)
-   {
-   if(ucs2.size() % 2 == 1)
-      throw Decoding_Error("UCS-2 string has an odd number of bytes");
-
-   std::string latin1;
-
-   for(u32bit j = 0; j != ucs2.size(); j += 2)
-      {
-      const byte c1 = ucs2[j];
-      const byte c2 = ucs2[j+1];
-
-      if(c1 != 0)
-         throw Decoding_Error("UCS-2 has non-Latin1 characters");
-
-      latin1 += static_cast<char>(c2);
-      }
-
-   return latin1;
-   }
-
-/*************************************************
-* Convert from UTF-8 to ISO 8859-1               *
-*************************************************/
-std::string utf8_to_latin1(const std::string& utf8)
-   {
-   std::string iso8859;
-
-   u32bit position = 0;
-   while(position != utf8.size())
-      {
-      const byte c1 = static_cast<byte>(utf8[position++]);
-
-      if(c1 <= 0x7F)
-         iso8859 += static_cast<char>(c1);
-      else if(c1 >= 0xC0 && c1 <= 0xC7)
-         {
-         if(position == utf8.size())
-            throw Decoding_Error("UTF-8: sequence truncated");
-
-         const byte c2 = static_cast<byte>(utf8[position++]);
-         const byte iso_char = ((c1 & 0x07) << 6) | (c2 & 0x3F);
-
-         if(iso_char <= 0x7F)
-            throw Decoding_Error("UTF-8: sequence longer than needed");
-
-         iso8859 += static_cast<char>(iso_char);
-         }
-      else
-         throw Decoding_Error("UTF-8: Unicode chars not in Latin1 used");
-      }
-
-   return iso8859;
-   }
-
-/*************************************************
-* Convert from ISO 8859-1 to UTF-8               *
-*************************************************/
-std::string latin1_to_utf8(const std::string& iso8859)
-   {
-   std::string utf8;
-   for(u32bit j = 0; j != iso8859.size(); ++j)
-      {
-      const byte c = static_cast<byte>(iso8859[j]);
-
-      if(c <= 0x7F)
-         utf8 += static_cast<char>(c);
-      else
-         {
-         utf8 += static_cast<char>((0xC0 | (c >> 6)));
-         utf8 += static_cast<char>((0x80 | (c & 0x3F)));
-         }
-      }
-   return utf8;
-   }
-
-}
-
-/*************************************************
-* Transcode between character sets               *
-*************************************************/
-std::string Default_Charset_Transcoder::transcode(const std::string& str,
-                                                  Character_Set to,
-                                                  Character_Set from) const
-   {
-   if(to == LOCAL_CHARSET)
-      to = LATIN1_CHARSET;
-   if(from == LOCAL_CHARSET)
-      from = LATIN1_CHARSET;
-
-   if(to == from)
-      return str;
-
-   if(from == LATIN1_CHARSET && to == UTF8_CHARSET)
-      return latin1_to_utf8(str);
-   if(from == UTF8_CHARSET && to == LATIN1_CHARSET)
-      return utf8_to_latin1(str);
-   if(from == UCS2_CHARSET && to == LATIN1_CHARSET)
-      return ucs2_to_latin1(str);
-
-   throw Invalid_Argument("Unknown transcoding operation from " +
-                          to_string(from) + " to " + to_string(to));
-   }
-
-}
diff --git a/src/dsa_gen.cpp b/src/dsa_gen.cpp
index 576c9a938..002af7d96 100644
--- a/src/dsa_gen.cpp
+++ b/src/dsa_gen.cpp
@@ -5,10 +5,9 @@
 
 #include <botan/dl_group.h>
 #include <botan/numthry.h>
-#include <botan/libstate.h>
 #include <botan/lookup.h>
 #include <botan/parsing.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <algorithm>
 #include <memory>
 
@@ -84,8 +83,6 @@ bool DL_Group::generate_dsa_primes(BigInt& p, BigInt& q,
    if(!is_prime(q))
       return false;
 
-   global_state().pulse(PRIME_FOUND);
-
    const u32bit n = (pbits-1) / (HASH_SIZE * 8),
                 b = (pbits-1) % (HASH_SIZE * 8);
 
@@ -94,8 +91,6 @@ bool DL_Group::generate_dsa_primes(BigInt& p, BigInt& q,
 
    for(u32bit j = 0; j != 4096; ++j)
       {
-      global_state().pulse(PRIME_SEARCHING);
-
       for(u32bit k = 0; k <= n; ++k)
          {
          ++seed;
@@ -110,10 +105,7 @@ bool DL_Group::generate_dsa_primes(BigInt& p, BigInt& q,
       p = X - (X % (2*q) - 1);
 
       if(p.bits() == pbits && is_prime(p))
-         {
-         global_state().pulse(PRIME_FOUND);
          return true;
-         }
       }
    return false;
    }
@@ -128,8 +120,7 @@ SecureVector<byte> DL_Group::generate_dsa_primes(BigInt& p, BigInt& q,
 
    while(true)
       {
-      Global_RNG::randomize(seed, seed.size());
-      global_state().pulse(PRIME_SEARCHING);
+      global_state().randomize(seed, seed.size());
 
       if(generate_dsa_primes(p, q, pbits, qbits, seed))
          return seed;
diff --git a/src/eme1.cpp b/src/eme1.cpp
index 62c5e81bd..43b5a0027 100644
--- a/src/eme1.cpp
+++ b/src/eme1.cpp
@@ -4,7 +4,7 @@
 *************************************************/
 
 #include <botan/eme.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <botan/lookup.h>
 #include <botan/look_pk.h>
 #include <memory>
@@ -26,7 +26,7 @@ SecureVector<byte> EME1::pad(const byte in[], u32bit in_length,
 
    out.clear();
 
-   Global_RNG::randomize(out, HASH_LENGTH);
+   global_state().randomize(out, HASH_LENGTH);
 
    out.copy(HASH_LENGTH, Phash, Phash.size());
    out[out.size() - in_length - 1] = 0x01;
diff --git a/src/eme_pkcs.cpp b/src/eme_pkcs.cpp
index a9bf30625..8296681d8 100644
--- a/src/eme_pkcs.cpp
+++ b/src/eme_pkcs.cpp
@@ -4,7 +4,7 @@
 *************************************************/
 
 #include <botan/eme.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 
 namespace Botan {
 
@@ -26,7 +26,7 @@ SecureVector<byte> EME_PKCS1v15::pad(const byte in[], u32bit inlen,
    out[0] = 0x02;
    for(u32bit j = 1; j != olen - inlen - 1; ++j)
       while(out[j] == 0)
-         out[j] = Global_RNG::random();
+         out[j] = global_state().random();
    out.copy(olen - inlen, in, inlen);
 
    return out;
diff --git a/src/emsa4.cpp b/src/emsa4.cpp
index 3465d63d7..831afd590 100644
--- a/src/emsa4.cpp
+++ b/src/emsa4.cpp
@@ -7,7 +7,7 @@
 #include <botan/lookup.h>
 #include <botan/look_pk.h>
 #include <botan/bit_ops.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 
 namespace Botan {
 
@@ -43,7 +43,7 @@ SecureVector<byte> EMSA4::encoding_of(const MemoryRegion<byte>& msg,
    const u32bit output_length = (output_bits + 7) / 8;
 
    SecureVector<byte> salt(SALT_SIZE);
-   Global_RNG::randomize(salt, SALT_SIZE);
+   global_state().randomize(salt, SALT_SIZE);
 
    for(u32bit j = 0; j != 8; ++j)
       hash->update(0);
diff --git a/src/filter.cpp b/src/filter.cpp
index b58b60332..a5bc2dea1 100644
--- a/src/filter.cpp
+++ b/src/filter.cpp
@@ -25,8 +25,6 @@ Filter::Filter()
 *************************************************/
 void Filter::send(const byte input[], u32bit length)
    {
-   global_state().pulse(PIPE_WRITE);
-
    bool nothing_attached = true;
    for(u32bit j = 0; j != total_ports(); ++j)
       if(next[j])
diff --git a/src/keypair.cpp b/src/keypair.cpp
index 54d117293..edec0b572 100644
--- a/src/keypair.cpp
+++ b/src/keypair.cpp
@@ -5,7 +5,7 @@
 
 #include <botan/keypair.h>
 #include <botan/look_pk.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <memory>
 
 namespace Botan {
@@ -24,7 +24,7 @@ void check_key(PK_Encryptor* encryptor, PK_Decryptor* decryptor)
    std::auto_ptr<PK_Decryptor> dec(decryptor);
 
    SecureVector<byte> message(enc->maximum_input_size() - 1);
-   Global_RNG::randomize(message, message.size());
+   global_state().randomize(message, message.size());
 
    SecureVector<byte> ciphertext = enc->encrypt(message);
    if(ciphertext == message)
@@ -44,7 +44,7 @@ void check_key(PK_Signer* signer, PK_Verifier* verifier)
    std::auto_ptr<PK_Verifier> ver(verifier);
 
    SecureVector<byte> message(16);
-   Global_RNG::randomize(message, message.size());
+   global_state().randomize(message, message.size());
 
    SecureVector<byte> signature;
 
diff --git a/src/libstate.cpp b/src/libstate.cpp
index 154ec928c..db2d124a8 100644
--- a/src/libstate.cpp
+++ b/src/libstate.cpp
@@ -7,10 +7,8 @@
 #include <botan/config.h>
 #include <botan/modules.h>
 #include <botan/engine.h>
-#include <botan/x509stat.h>
 #include <botan/stl_util.h>
 #include <botan/mutex.h>
-#include <botan/timers.h>
 #include <botan/charset.h>
 #include <botan/x931_rng.h>
 #include <botan/selftest.h>
@@ -123,23 +121,6 @@ void Library_State::set_default_allocator(const std::string& type) const
    }
 
 /*************************************************
-* Set the high resolution clock implementation   *
-*************************************************/
-void Library_State::set_timer(Timer* new_timer)
-   {
-   delete timer;
-   timer = new_timer;
-   }
-
-/*************************************************
-* Read a high resolution clock                   *
-*************************************************/
-u64bit Library_State::system_clock() const
-   {
-   return (timer) ? timer->clock() : 0;
-   }
-
-/*************************************************
 * Set the global PRNG                            *
 *************************************************/
 void Library_State::set_prng(RandomNumberGenerator* new_rng)
@@ -161,6 +142,16 @@ void Library_State::randomize(byte out[], u32bit length)
    }
 
 /*************************************************
+* Get a byte from the global PRNG                *
+*************************************************/
+byte Library_State::random()
+   {
+   byte out;
+   rng->randomize(&out, 1);
+   return out;
+   }
+
+/*************************************************
 * Add a new entropy source to use                *
 *************************************************/
 void Library_State::add_entropy_source(EntropySource* src, bool last_in_list)
@@ -234,67 +225,6 @@ void Library_State::add_engine(Engine* engine)
    }
 
 /*************************************************
-* Set the character set transcoder object        *
-*************************************************/
-void Library_State::set_transcoder(class Charset_Transcoder* transcoder)
-   {
-   if(this->transcoder)
-      delete this->transcoder;
-   this->transcoder = transcoder;
-   }
-
-/*************************************************
-* Transcode a string from one charset to another *
-*************************************************/
-std::string Library_State::transcode(const std::string str,
-                                     Character_Set to,
-                                     Character_Set from) const
-   {
-   if(!transcoder)
-      throw Invalid_State("Library_State::transcode: No transcoder set");
-
-   return transcoder->transcode(str, to, from);
-   }
-
-/*************************************************
-* Set the X509 global state class                *
-*************************************************/
-void Library_State::set_x509_state(X509_GlobalState* new_x509_state_obj)
-   {
-   delete x509_state_obj;
-   x509_state_obj = new_x509_state_obj;
-   }
-
-/*************************************************
-* Get the X509 global state class                *
-*************************************************/
-X509_GlobalState& Library_State::x509_state()
-   {
-   if(!x509_state_obj)
-      x509_state_obj = new X509_GlobalState();
-
-   return (*x509_state_obj);
-   }
-
-/*************************************************
-* Set the UI object state                        *
-*************************************************/
-void Library_State::set_ui(UI* new_ui)
-   {
-   delete ui;
-   ui = new_ui;
-   }
-
-/*************************************************
-* Send a pulse to the UI object                  *
-*************************************************/
-void Library_State::pulse(Pulse_Type pulse_type) const
-   {
-   if(ui)
-      ui->pulse(pulse_type);
-   }
-
-/*************************************************
 * Set the configuration object                   *
 *************************************************/
 Config& Library_State::config() const
@@ -327,11 +257,6 @@ void Library_State::initialize(const InitializerOptions& args,
    rng_lock = get_mutex();
 
    cached_default_allocator = 0;
-   x509_state_obj = 0;
-   ui = 0;
-
-   timer = modules.timer();
-   transcoder = modules.transcoder();
 
    std::vector<Allocator*> mod_allocs = modules.allocators();
    for(u32bit j = 0; j != mod_allocs.size(); ++j)
@@ -378,15 +303,10 @@ Library_State::Library_State()
 
    allocator_lock = engine_lock = rng_lock = 0;
 
-   timer = 0;
    config_obj = 0;
-   x509_state_obj = 0;
 
-   ui = 0;
-   transcoder = 0;
    rng = 0;
    cached_default_allocator = 0;
-   ui = 0;
    }
 
 /*************************************************
@@ -394,12 +314,8 @@ Library_State::Library_State()
 *************************************************/
 Library_State::~Library_State()
    {
-   delete x509_state_obj;
-   delete transcoder;
    delete rng;
-   delete timer;
    delete config_obj;
-   delete ui;
 
    std::for_each(entropy_sources.begin(), entropy_sources.end(),
                  del_fun<EntropySource>());
diff --git a/src/make_prm.cpp b/src/make_prm.cpp
index 01f524865..d5f9961af 100644
--- a/src/make_prm.cpp
+++ b/src/make_prm.cpp
@@ -29,8 +29,6 @@ BigInt random_prime(u32bit bits, const BigInt& coprime,
 
    while(true)
       {
-      global_state().pulse(PRIME_SEARCHING);
-
       BigInt p = random_integer(bits);
       p.set_bit(bits - 2);
       p.set_bit(0);
@@ -42,10 +40,7 @@ BigInt random_prime(u32bit bits, const BigInt& coprime,
       SecureVector<u32bit> sieve(sieve_size);
 
       for(u32bit j = 0; j != sieve.size(); ++j)
-         {
          sieve[j] = p % PRIMES[j];
-         global_state().pulse(PRIME_SIEVING);
-         }
 
       u32bit counter = 0;
       while(true)
@@ -53,8 +48,6 @@ BigInt random_prime(u32bit bits, const BigInt& coprime,
          if(counter == 4096 || p.bits() > bits)
             break;
 
-         global_state().pulse(PRIME_SEARCHING);
-
          bool passes_sieve = true;
          ++counter;
          p += modulo;
@@ -62,19 +55,14 @@ BigInt random_prime(u32bit bits, const BigInt& coprime,
          for(u32bit j = 0; j != sieve.size(); ++j)
             {
             sieve[j] = (sieve[j] + modulo) % PRIMES[j];
-            global_state().pulse(PRIME_SIEVING);
             if(sieve[j] == 0)
                passes_sieve = false;
             }
 
          if(!passes_sieve || gcd(p - 1, coprime) != 1)
             continue;
-         global_state().pulse(PRIME_PASSED_SIEVE);
          if(passes_mr_tests(p))
-            {
-            global_state().pulse(PRIME_FOUND);
             return p;
-            }
          }
       }
    }
diff --git a/src/modules.cpp b/src/modules.cpp
index 51dc362fd..b69e6c5f7 100644
--- a/src/modules.cpp
+++ b/src/modules.cpp
@@ -5,7 +5,6 @@
 
 #include <botan/modules.h>
 #include <botan/defalloc.h>
-#include <botan/def_char.h>
 #include <botan/eng_def.h>
 #include <botan/timers.h>
 #include <botan/parsing.h>
@@ -95,24 +94,6 @@ Mutex_Factory* Builtin_Modules::mutex_factory() const
    }
 
 /*************************************************
-* Find a high resolution timer, if possible      *
-*************************************************/
-Timer* Builtin_Modules::timer() const
-   {
-#if defined(BOTAN_EXT_TIMER_HARDWARE)
-   return new Hardware_Timer;
-#elif defined(BOTAN_EXT_TIMER_POSIX)
-   return new POSIX_Timer;
-#elif defined(BOTAN_EXT_TIMER_UNIX)
-   return new Unix_Timer;
-#elif defined(BOTAN_EXT_TIMER_WIN32)
-   return new Win32_Timer;
-#else
-   return new Timer;
-#endif
-   }
-
-/*************************************************
 * Find any usable allocators                     *
 *************************************************/
 std::vector<Allocator*> Builtin_Modules::allocators() const
@@ -153,6 +134,18 @@ std::vector<EntropySource*> Builtin_Modules::entropy_sources() const
    {
    std::vector<EntropySource*> sources;
 
+#if defined(BOTAN_EXT_TIMER_HARDWARE)
+   sources.push_back(new Hardware_Timer);
+#elif defined(BOTAN_EXT_TIMER_POSIX)
+   sources.push_back(new POSIX_Timer);
+#elif defined(BOTAN_EXT_TIMER_UNIX)
+   sources.push_back(new Unix_Timer);
+#elif defined(BOTAN_EXT_TIMER_WIN32)
+   sources.push_back(new Win32_Timer);
+#else
+   sources.push_back(new Timer);
+#endif
+
 #if defined(BOTAN_EXT_ENTROPY_SRC_AEP)
    sources.push_back(new AEP_EntropySource);
 #endif
@@ -224,14 +217,6 @@ std::vector<Engine*> Builtin_Modules::engines() const
    }
 
 /*************************************************
-* Find the best transcoder option                *
-*************************************************/
-Charset_Transcoder* Builtin_Modules::transcoder() const
-   {
-   return new Default_Charset_Transcoder;
-   }
-
-/*************************************************
 * Builtin_Modules Constructor                    *
 *************************************************/
 Builtin_Modules::Builtin_Modules(const InitializerOptions& args) :
diff --git a/src/numthry.cpp b/src/numthry.cpp
index 233702138..01b46c982 100644
--- a/src/numthry.cpp
+++ b/src/numthry.cpp
@@ -284,15 +284,12 @@ bool MillerRabin_Test::passes_test(const BigInt& a)
    if(a < 2 || a >= n_minus_1)
       throw Invalid_Argument("Bad size for nonce in Miller-Rabin test");
 
-   global_state().pulse(PRIME_TESTING);
-
    BigInt y = pow_mod(a);
    if(y == 1 || y == n_minus_1)
       return true;
 
    for(u32bit j = 1; j != s; ++j)
       {
-      global_state().pulse(PRIME_TESTING);
       y = reducer.square(y);
 
       if(y == 1)
diff --git a/src/pbes1.cpp b/src/pbes1.cpp
index fb8889fdc..8e548f6b4 100644
--- a/src/pbes1.cpp
+++ b/src/pbes1.cpp
@@ -8,7 +8,7 @@
 #include <botan/ber_dec.h>
 #include <botan/parsing.h>
 #include <botan/lookup.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <algorithm>
 #include <memory>
 
@@ -86,7 +86,7 @@ void PBE_PKCS5v15::new_params()
    {
    iterations = 2048;
    salt.create(8);
-   Global_RNG::randomize(salt, salt.size());
+   global_state().randomize(salt, salt.size());
    }
 
 /*************************************************
diff --git a/src/pbes2.cpp b/src/pbes2.cpp
index f2c46b556..ea51597a3 100644
--- a/src/pbes2.cpp
+++ b/src/pbes2.cpp
@@ -8,7 +8,7 @@
 #include <botan/ber_dec.h>
 #include <botan/parsing.h>
 #include <botan/lookup.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <botan/asn1_obj.h>
 #include <botan/oids.h>
 #include <algorithm>
@@ -87,8 +87,8 @@ void PBE_PKCS5v20::new_params()
    key_length = max_keylength_of(cipher_algo);
    salt.create(8);
    iv.create(block_size_of(cipher_algo));
-   Global_RNG::randomize(salt, salt.size());
-   Global_RNG::randomize(iv, iv.size());
+   global_state().randomize(salt, salt.size());
+   global_state().randomize(iv, iv.size());
    }
 
 /*************************************************
diff --git a/src/randpool.cpp b/src/randpool.cpp
index e935efe35..46968eee1 100644
--- a/src/randpool.cpp
+++ b/src/randpool.cpp
@@ -59,7 +59,7 @@ void Randpool::randomize(byte out[], u32bit length) throw(PRNG_Unseeded)
 *************************************************/
 void Randpool::update_buffer()
    {
-   const u64bit timestamp = system_clock();
+   const u64bit timestamp = system_time();
 
    for(u32bit j = 0; j != counter.size(); ++j)
       if(++counter[j])
diff --git a/src/rng.cpp b/src/rng.cpp
deleted file mode 100644
index dc93b56f6..000000000
--- a/src/rng.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-/*************************************************
-* Global RNG Source File                         *
-* (C) 1999-2007 Jack Lloyd                       *
-*************************************************/
-
-#include <botan/rng.h>
-#include <botan/libstate.h>
-
-namespace Botan {
-
-namespace Global_RNG {
-
-/*************************************************
-* Get random bits from the global RNG            *
-*************************************************/
-void randomize(byte output[], u32bit size)
-   {
-   global_state().randomize(output, size);
-   }
-
-/*************************************************
-* Get random bits from the global RNG            *
-*************************************************/
-byte random()
-   {
-   byte ret = 0;
-   randomize(&ret, 1);
-   return ret;
-   }
-
-/*************************************************
-* Add entropy to the global RNG                  *
-*************************************************/
-void add_entropy(const byte entropy[], u32bit size)
-   {
-   global_state().add_entropy(entropy, size);
-   }
-
-/*************************************************
-* Add entropy to the global RNG                  *
-*************************************************/
-void add_entropy(EntropySource& src, bool slow_poll)
-   {
-   global_state().add_entropy(src, slow_poll);
-   }
-
-/*************************************************
-* Add an EntropySource to the RNG seed list      *
-*************************************************/
-void add_es(EntropySource* src, bool last)
-   {
-   global_state().add_entropy_source(src, last);
-   }
-
-/*************************************************
-* Seed the global RNG                            *
-*************************************************/
-u32bit seed(bool slow_poll, u32bit bits_to_get)
-   {
-   return global_state().seed_prng(slow_poll, bits_to_get);
-   }
-
-}
-
-}
diff --git a/src/s2k.cpp b/src/s2k.cpp
index d20b6738c..e5668f32f 100644
--- a/src/s2k.cpp
+++ b/src/s2k.cpp
@@ -4,7 +4,7 @@
 *************************************************/
 
 #include <botan/s2k.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 
 namespace Botan {
 
@@ -47,7 +47,7 @@ void S2K::change_salt(const MemoryRegion<byte>& new_salt)
 void S2K::new_random_salt(u32bit length)
    {
    salt.create(length);
-   Global_RNG::randomize(salt, length);
+   global_state().randomize(salt, length);
    }
 
 }
diff --git a/src/symkey.cpp b/src/symkey.cpp
index 58c050aac..db70810fb 100644
--- a/src/symkey.cpp
+++ b/src/symkey.cpp
@@ -7,7 +7,7 @@
 #include <botan/bit_ops.h>
 #include <botan/pipe.h>
 #include <botan/hex.h>
-#include <botan/rng.h>
+#include <botan/libstate.h>
 #include <algorithm>
 
 namespace Botan {
@@ -18,7 +18,7 @@ namespace Botan {
 void OctetString::change(u32bit length)
    {
    bits.create(length);
-   Global_RNG::randomize(bits, length);
+   global_state().randomize(bits, length);
    }
 
 /*************************************************
diff --git a/src/timers.cpp b/src/timers.cpp
index 86839ad85..55ee12236 100644
--- a/src/timers.cpp
+++ b/src/timers.cpp
@@ -4,24 +4,19 @@
 *************************************************/
 
 #include <botan/timers.h>
-#include <botan/libstate.h>
+#include <botan/loadstor.h>
 #include <ctime>
 
 namespace Botan {
 
 /*************************************************
-* Timer Access Functions                         *
+* Get the system clock                           *
 *************************************************/
 u64bit system_time()
    {
    return static_cast<u64bit>(std::time(0));
    }
 
-u64bit system_clock()
-   {
-   return global_state().system_clock();
-   }
-
 /*************************************************
 * Default Timer clock reading                    *
 *************************************************/
@@ -31,11 +26,24 @@ u64bit Timer::clock() const
    }
 
 /*************************************************
+* Read the clock and return the output           *
+*************************************************/
+u32bit Timer::slow_poll(byte out[], u32bit length)
+   {
+   const u64bit clock_value = this->clock();
+
+   for(u32bit j = 0; j != sizeof(clock_value); ++j)
+      out[j % length] ^= get_byte(j, clock_value);
+
+   return (length < 8) ? length : 8;
+   }
+
+/*************************************************
 * Combine a two time values into a single one    *
 *************************************************/
 u64bit Timer::combine_timers(u32bit seconds, u32bit parts, u32bit parts_hz)
    {
-   const u64bit NANOSECONDS_UNITS = 1000000000;
+   static const u64bit NANOSECONDS_UNITS = 1000000000;
    parts *= (NANOSECONDS_UNITS / parts_hz);
    return ((seconds * NANOSECONDS_UNITS) + parts);
    }
diff --git a/src/x509_ext.cpp b/src/x509_ext.cpp
index f692c5ac2..42a5bad01 100644
--- a/src/x509_ext.cpp
+++ b/src/x509_ext.cpp
@@ -4,8 +4,6 @@
 *************************************************/
 
 #include <botan/x509_ext.h>
-#include <botan/x509stat.h>
-#include <botan/libstate.h>
 #include <botan/der_enc.h>
 #include <botan/ber_dec.h>
 #include <botan/lookup.h>
@@ -18,6 +16,28 @@
 namespace Botan {
 
 /*************************************************
+* List of X.509 Certificate Extensions           *
+*************************************************/
+Certificate_Extension* Extensions::get_extension(const OID& oid)
+   {
+#define X509_EXTENSION(NAME, TYPE) \
+   if(OIDS::name_of(oid, NAME))    \
+      return new Cert_Extension::TYPE();
+
+   X509_EXTENSION("X509v3.KeyUsage", Key_Usage);
+   X509_EXTENSION("X509v3.BasicConstraints", Basic_Constraints);
+   X509_EXTENSION("X509v3.SubjectKeyIdentifier", Subject_Key_ID);
+   X509_EXTENSION("X509v3.AuthorityKeyIdentifier", Authority_Key_ID);
+   X509_EXTENSION("X509v3.ExtendedKeyUsage", Extended_Key_Usage);
+   X509_EXTENSION("X509v3.IssuerAlternativeName", Issuer_Alternative_Name);
+   X509_EXTENSION("X509v3.SubjectAlternativeName", Subject_Alternative_Name);
+   X509_EXTENSION("X509v3.CRLNumber", CRL_Number);
+   X509_EXTENSION("X509v3.CertificatePolicies", Certificate_Policies);
+
+   return 0;
+   }
+
+/*************************************************
 * Extensions Copy Constructor                    *
 *************************************************/
 Extensions::Extensions(const Extensions& extensions) : ASN1_Object()
@@ -107,8 +127,7 @@ void Extensions::decode_from(BER_Decoder& from_source)
             .verify_end()
          .end_cons();
 
-      Certificate_Extension* ext =
-         global_state().x509_state().get_extension(oid);
+      Certificate_Extension* ext = get_extension(oid);
 
       if(!ext)
          {
diff --git a/src/x509stat.cpp b/src/x509stat.cpp
deleted file mode 100644
index fd45c00b3..000000000
--- a/src/x509stat.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*************************************************
-* Globally Saved X.509 State Source              *
-* (C) 1999-2007 Jack Lloyd                       *
-*************************************************/
-
-#include <botan/x509stat.h>
-#include <botan/x509_ext.h>
-#include <botan/oids.h>
-
-namespace Botan {
-
-/*************************************************
-* Add a new prototype                            *
-*************************************************/
-void X509_GlobalState::add(Extension_Prototype* proto)
-   {
-   if(proto)
-      prototypes.push_back(proto);
-   }
-
-/*************************************************
-* Get an extension object                        *
-*************************************************/
-Certificate_Extension* X509_GlobalState::get_extension(const OID& oid) const
-   {
-   Certificate_Extension* extension = 0;
-   for(u32bit j = 0; j != prototypes.size() && !extension; ++j)
-      extension = prototypes[j]->make(oid);
-   return extension;
-   }
-
-/*************************************************
-* Set up a new global state for X.509            *
-*************************************************/
-X509_GlobalState::X509_GlobalState()
-   {
-
-#define CREATE_PROTOTYPE(NAME, TYPE)                         \
-   do {                                                      \
-      struct TYPE ## _Prototype : public Extension_Prototype \
-         {                                                   \
-         Certificate_Extension* make(const OID& oid)         \
-            {                                                \
-            if(Botan::OIDS::name_of(oid, NAME))              \
-               return new Botan::Cert_Extension::TYPE();     \
-            return 0;                                        \
-            }                                                \
-         };                                                  \
-                                                             \
-      add(new TYPE ## _Prototype);                           \
-   } while(0);
-
-   CREATE_PROTOTYPE("X509v3.KeyUsage", Key_Usage);
-   CREATE_PROTOTYPE("X509v3.BasicConstraints", Basic_Constraints);
-   CREATE_PROTOTYPE("X509v3.SubjectKeyIdentifier", Subject_Key_ID);
-   CREATE_PROTOTYPE("X509v3.AuthorityKeyIdentifier", Authority_Key_ID);
-   CREATE_PROTOTYPE("X509v3.ExtendedKeyUsage", Extended_Key_Usage);
-   CREATE_PROTOTYPE("X509v3.IssuerAlternativeName", Issuer_Alternative_Name);
-   CREATE_PROTOTYPE("X509v3.SubjectAlternativeName", Subject_Alternative_Name);
-   CREATE_PROTOTYPE("X509v3.CRLNumber", CRL_Number);
-   CREATE_PROTOTYPE("X509v3.CertificatePolicies", Certificate_Policies);
-
-#undef CREATE_PROTOTYPE
-   }
-
-/*************************************************
-* Destroy this global state object               *
-*************************************************/
-X509_GlobalState::~X509_GlobalState()
-   {
-   for(u32bit j = 0; j != prototypes.size(); ++j)
-      delete prototypes[j];
-   prototypes.clear();
-   }
-
-}