Fresh start

10 files changed, 1882 insertions, 0 deletions

diff --git a/jni/ruby/ext/digest/sha2/Makefile b/jni/ruby/ext/digest/sha2/Makefile
new file mode 100644
index 0000000..0a9fb9f
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/Makefile
@@ -0,0 +1,308 @@
+
+SHELL = /bin/sh
+
+# V=0 quiet, V=1 verbose.  other values don't work.
+V = 0
+Q1 = $(V:1=)
+Q = $(Q1:0=@)
+ECHO1 = $(V:1=@:)
+ECHO = $(ECHO1:0=@echo)
+NULLCMD = :
+
+#### Start of system configuration section. ####
+top_srcdir = $(topdir)/.
+srcdir = $(top_srcdir)/ext/digest/sha2
+topdir = ../../..
+hdrdir = $(top_srcdir)/include
+arch_hdrdir = $(extout)/include/$(arch)
+PATH_SEPARATOR = :
+VPATH = $(srcdir):$(arch_hdrdir)/ruby:$(hdrdir)/ruby
+RUBYLIB =
+RUBYOPT = -
+prefix = $(DESTDIR)/usr/local
+rubysitearchprefix = $(rubylibprefix)/$(sitearch)
+rubyarchprefix = $(rubylibprefix)/$(arch)
+rubylibprefix = $(libdir)/$(RUBY_BASE_NAME)
+exec_prefix = $(prefix)
+vendorarchhdrdir = $(vendorhdrdir)/$(sitearch)
+sitearchhdrdir = $(sitehdrdir)/$(sitearch)
+rubyarchhdrdir = $(rubyhdrdir)/$(arch)
+vendorhdrdir = $(rubyhdrdir)/vendor_ruby
+sitehdrdir = $(rubyhdrdir)/site_ruby
+rubyhdrdir = $(includedir)/$(RUBY_VERSION_NAME)
+vendorarchdir = $(vendorlibdir)/$(sitearch)
+vendorlibdir = $(vendordir)/$(ruby_version)
+vendordir = $(rubylibprefix)/vendor_ruby
+sitearchdir = $(sitelibdir)/$(sitearch)
+sitelibdir = $(sitedir)/$(ruby_version)
+sitedir = $(rubylibprefix)/site_ruby
+rubyarchdir = $(rubylibdir)/$(arch)
+rubylibdir = $(rubylibprefix)/$(ruby_version)
+sitearchincludedir = $(includedir)/$(sitearch)
+archincludedir = $(includedir)/$(arch)
+sitearchlibdir = $(libdir)/$(sitearch)
+archlibdir = $(libdir)/$(arch)
+ridir = $(datarootdir)/$(RI_BASE_NAME)
+mandir = $(datarootdir)/man
+localedir = $(datarootdir)/locale
+libdir = $(exec_prefix)/lib
+psdir = $(docdir)
+pdfdir = $(docdir)
+dvidir = $(docdir)
+htmldir = $(docdir)
+infodir = $(datarootdir)/info
+docdir = $(datarootdir)/doc/$(PACKAGE)
+oldincludedir = $(DESTDIR)/usr/include
+includedir = $(prefix)/include
+localstatedir = $(prefix)/var
+sharedstatedir = $(prefix)/com
+sysconfdir = $(prefix)/etc
+datadir = $(datarootdir)
+datarootdir = $(prefix)/share
+libexecdir = $(exec_prefix)/libexec
+sbindir = $(exec_prefix)/sbin
+bindir = $(exec_prefix)/bin
+archdir = $(rubyarchdir)
+
+
+CC = gcc
+CXX = g++
+LIBRUBY = $(LIBRUBY_SO)
+LIBRUBY_A = lib$(RUBY_SO_NAME)-static.a
+LIBRUBYARG_SHARED = -Wl,-R$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)
+LIBRUBYARG_STATIC = -Wl,-R$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)-static
+empty =
+OUTFLAG = -o $(empty)
+COUTFLAG = -o $(empty)
+
+RUBY_EXTCONF_H = extconf.h
+cflags   =  $(optflags) $(debugflags) $(warnflags)
+optflags = -O3 -fno-fast-math
+debugflags = -ggdb3
+warnflags = -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat
+CCDLFLAGS = -fPIC
+CFLAGS   = $(CCDLFLAGS) $(cflags)  -fPIC  $(ARCH_FLAG)
+INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(srcdir) -I$(srcdir)/.. 
+DEFS     = 
+CPPFLAGS = -DRUBY_EXTCONF_H=\"$(RUBY_EXTCONF_H)\"  $(DEFS) $(cppflags)
+CXXFLAGS = $(CCDLFLAGS) $(cxxflags)  $(ARCH_FLAG)
+ldflags  = -L. -fstack-protector -rdynamic -Wl,-export-dynamic 
+dldflags =  
+ARCH_FLAG = 
+DLDFLAGS = $(ldflags) $(dldflags) $(ARCH_FLAG)
+LDSHARED = $(CC) -shared
+LDSHAREDXX = $(CXX) -shared
+AR = ar
+EXEEXT = 
+
+RUBY_INSTALL_NAME = $(RUBY_BASE_NAME)
+RUBY_SO_NAME = ruby
+RUBYW_INSTALL_NAME = 
+RUBY_VERSION_NAME = $(RUBY_BASE_NAME)-$(ruby_version)
+RUBYW_BASE_NAME = rubyw
+RUBY_BASE_NAME = ruby
+
+arch = x86_64-linux
+sitearch = $(arch)
+ruby_version = 2.2.0
+ruby = $(topdir)/miniruby -I'$(topdir)' -I'$(top_srcdir)/lib' -I'$(extout)/$(arch)' -I'$(extout)/common'
+RUBY = $(ruby)
+ruby_headers = $(hdrdir)/ruby.h $(hdrdir)/ruby/ruby.h $(hdrdir)/ruby/defines.h $(hdrdir)/ruby/missing.h $(hdrdir)/ruby/intern.h $(hdrdir)/ruby/st.h $(hdrdir)/ruby/subst.h $(arch_hdrdir)/ruby/config.h $(RUBY_EXTCONF_H)
+
+RM = rm -f
+RM_RF = $(RUBY) -run -e rm -- -rf
+RMDIRS = rmdir --ignore-fail-on-non-empty -p
+MAKEDIRS = /bin/mkdir -p
+INSTALL = /usr/bin/install -c
+INSTALL_PROG = $(INSTALL) -m 0755
+INSTALL_DATA = $(INSTALL) -m 644
+COPY = cp
+TOUCH = exit >
+
+#### End of system configuration section. ####
+
+preload = digest
+
+libpath = . $(topdir)
+LIBPATH =  -L. -L$(topdir)
+DEFFILE = 
+
+CLEANFILES = mkmf.log
+DISTCLEANFILES = 
+DISTCLEANDIRS = 
+
+extout = $(topdir)/.ext
+extout_prefix = $(extout)$(target_prefix)/
+target_prefix = /digest
+LOCAL_LIBS = 
+LIBS = $(LIBRUBYARG_SHARED) -lcrypto  -lssl -lcrypto -lpthread -lgmp -ldl -lcrypt -lm   -lc
+ORIG_SRCS = sha2.c sha2ossl.c sha2init.c
+SRCS = $(ORIG_SRCS) sha2init.c sha2ossl.c
+OBJS = sha2init.o sha2ossl.o
+HDRS = $(srcdir)/sha2ossl.h $(srcdir)/sha2.h $(srcdir)/extconf.h
+TARGET = sha2
+TARGET_NAME = sha2
+TARGET_ENTRY = Init_$(TARGET_NAME)
+DLLIB = $(TARGET).so
+EXTSTATIC = 
+STATIC_LIB = $(TARGET).a
+
+TIMESTAMP_DIR = $(extout)/.timestamp
+BINDIR        = $(extout)/bin
+RUBYCOMMONDIR = $(extout)/common
+RUBYLIBDIR    = $(RUBYCOMMONDIR)$(target_prefix)
+RUBYARCHDIR   = $(extout)/$(arch)$(target_prefix)
+HDRDIR        = $(extout)/include/ruby$(target_prefix)
+ARCHHDRDIR    = $(extout)/include/$(arch)/ruby$(target_prefix)
+
+TARGET_SO     = $(RUBYARCHDIR)/$(DLLIB)
+CLEANLIBS     = $(RUBYARCHDIR)/$(TARGET).so 
+CLEANOBJS     = *.o  *.bak
+
+all:    install
+static: all
+.PHONY: all install static install-so install-rb
+.PHONY: clean clean-so clean-static clean-rb
+
+clean-static::
+clean-rb-default::
+clean-rb::
+clean-so::
+clean: clean-so clean-static clean-rb-default clean-rb
+		-$(Q)$(RM) $(CLEANLIBS) $(CLEANOBJS) $(CLEANFILES) .*.time
+
+distclean-rb-default::
+distclean-rb::
+distclean-so::
+distclean-static::
+distclean: clean distclean-so distclean-static distclean-rb-default distclean-rb
+		-$(Q)$(RM) Makefile $(RUBY_EXTCONF_H) conftest.* mkmf.log
+		-$(Q)$(RM) core ruby$(EXEEXT) *~ $(DISTCLEANFILES)
+		-$(Q)$(RMDIRS) $(DISTCLEANDIRS) 2> /dev/null || true
+
+realclean: distclean
+install: install-so install-rb
+
+install-so: $(RUBYARCHDIR)/$(DLLIB)
+clean-so::
+	-$(Q)$(RM) $(RUBYARCHDIR)/$(DLLIB)
+	-$(Q)$(RMDIRS) $(RUBYARCHDIR) 2> /dev/null || true
+clean-static::
+	-$(Q)$(RM) $(STATIC_LIB)
+install-rb: pre-install-rb install-rb-default
+install-rb-default: pre-install-rb-default
+pre-install-rb: Makefile
+pre-install-rb-default: Makefile
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.digest.time
+install-rb-default: $(RUBYLIBDIR)/sha2.rb
+$(RUBYLIBDIR)/sha2.rb: $(srcdir)/lib/sha2.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.digest.time
+	$(Q) $(COPY) $(srcdir)/lib/sha2.rb $(@D)
+clean-rb-default::
+	-$(Q)$(RM) $(RUBYLIBDIR)/sha2.rb
+pre-install-rb-default:
+	$(ECHO) installing default sha2 libraries
+clean-rb-default::
+	-$(Q)$(RMDIRS) $(RUBYLIBDIR) 2> /dev/null || true
+$(TIMESTAMP_DIR)/.RUBYARCHDIR.-.digest.time:
+	$(Q) $(MAKEDIRS) $(@D) $(RUBYARCHDIR)
+	$(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.digest.time:
+	$(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)
+	$(Q) $(TOUCH) $@
+
+site-install: site-install-so site-install-rb
+site-install-so: install-so
+site-install-rb: install-rb
+
+.SUFFIXES: .c .m .cc .mm .cxx .cpp .o .S
+
+.cc.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cc.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.mm.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.mm.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.cxx.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cxx.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.cpp.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cpp.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.c.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $<
+
+.c.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $<
+
+.m.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $<
+
+.m.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $<
+
+$(RUBYARCHDIR)/$(DLLIB): $(OBJS) Makefile $(TIMESTAMP_DIR)/.RUBYARCHDIR.-.digest.time
+	$(ECHO) linking shared-object digest/$(DLLIB)
+	-$(Q)$(RM) $(@)
+	$(Q) $(LDSHARED) -o $@ $(OBJS) $(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)
+
+$(STATIC_LIB): $(OBJS)
+	-$(Q)$(RM) $(@)
+	$(ECHO) linking static-library $(@)
+	$(Q) $(AR) cru $@ $(OBJS)
+	-$(Q)ranlib $(@) 2> /dev/null || true
+
+###
+$(OBJS): $(RUBY_EXTCONF_H)
+
+sha2.o: sha2.c sha2.h $(srcdir)/../defs.h $(HDRS) $(ruby_headers)
+
+# AUTOGENERATED DEPENDENCIES START
+sha2init.o: $(RUBY_EXTCONF_H)
+sha2init.o: $(arch_hdrdir)/ruby/config.h
+sha2init.o: $(hdrdir)/ruby/defines.h
+sha2init.o: $(hdrdir)/ruby/intern.h
+sha2init.o: $(hdrdir)/ruby/missing.h
+sha2init.o: $(hdrdir)/ruby/ruby.h
+sha2init.o: $(hdrdir)/ruby/st.h
+sha2init.o: $(hdrdir)/ruby/subst.h
+sha2init.o: $(top_srcdir)/ext/digest/digest.h
+sha2init.o: $(top_srcdir)/include/ruby.h
+sha2init.o: sha2init.c
+sha2init.o: sha2ossl.h
+sha2ossl.o: $(RUBY_EXTCONF_H)
+sha2ossl.o: $(arch_hdrdir)/ruby/config.h
+sha2ossl.o: $(hdrdir)/ruby/defines.h
+sha2ossl.o: $(hdrdir)/ruby/intern.h
+sha2ossl.o: $(hdrdir)/ruby/missing.h
+sha2ossl.o: $(hdrdir)/ruby/ruby.h
+sha2ossl.o: $(hdrdir)/ruby/st.h
+sha2ossl.o: $(hdrdir)/ruby/subst.h
+sha2ossl.o: $(top_srcdir)/ext/digest/defs.h
+sha2ossl.o: $(top_srcdir)/include/ruby.h
+sha2ossl.o: sha2ossl.c
+sha2ossl.o: sha2ossl.h
+# AUTOGENERATED DEPENDENCIES END
diff --git a/jni/ruby/ext/digest/sha2/depend b/jni/ruby/ext/digest/sha2/depend
new file mode 100644
index 0000000..3a47a76
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/depend
@@ -0,0 +1,28 @@
+sha2.o: sha2.c sha2.h $(srcdir)/../defs.h $(HDRS) $(ruby_headers)
+
+# AUTOGENERATED DEPENDENCIES START
+sha2init.o: $(RUBY_EXTCONF_H)
+sha2init.o: $(arch_hdrdir)/ruby/config.h
+sha2init.o: $(hdrdir)/ruby/defines.h
+sha2init.o: $(hdrdir)/ruby/intern.h
+sha2init.o: $(hdrdir)/ruby/missing.h
+sha2init.o: $(hdrdir)/ruby/ruby.h
+sha2init.o: $(hdrdir)/ruby/st.h
+sha2init.o: $(hdrdir)/ruby/subst.h
+sha2init.o: $(top_srcdir)/ext/digest/digest.h
+sha2init.o: $(top_srcdir)/include/ruby.h
+sha2init.o: sha2init.c
+sha2init.o: sha2ossl.h
+sha2ossl.o: $(RUBY_EXTCONF_H)
+sha2ossl.o: $(arch_hdrdir)/ruby/config.h
+sha2ossl.o: $(hdrdir)/ruby/defines.h
+sha2ossl.o: $(hdrdir)/ruby/intern.h
+sha2ossl.o: $(hdrdir)/ruby/missing.h
+sha2ossl.o: $(hdrdir)/ruby/ruby.h
+sha2ossl.o: $(hdrdir)/ruby/st.h
+sha2ossl.o: $(hdrdir)/ruby/subst.h
+sha2ossl.o: $(top_srcdir)/ext/digest/defs.h
+sha2ossl.o: $(top_srcdir)/include/ruby.h
+sha2ossl.o: sha2ossl.c
+sha2ossl.o: sha2ossl.h
+# AUTOGENERATED DEPENDENCIES END
diff --git a/jni/ruby/ext/digest/sha2/extconf.h b/jni/ruby/ext/digest/sha2/extconf.h
new file mode 100644
index 0000000..0891867
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/extconf.h
@@ -0,0 +1,13 @@
+#ifndef EXTCONF_H
+#define EXTCONF_H
+#define HAVE_CONFIG_H 1
+#define HAVE_SHA256_TRANSFORM 1
+#define HAVE_OPENSSL_SHA_H 1
+#define HAVE_SHA512_TRANSFORM 1
+#define HAVE_OPENSSL_SHA_H 1
+#define HAVE_TYPE_SHA256_CTX 1
+#define HAVE_TYPE_SHA512_CTX 1
+#define SHA2_USE_OPENSSL 1
+#define HAVE_SYS_CDEFS_H 1
+#define HAVE_TYPE_UINT64_T 1
+#endif
diff --git a/jni/ruby/ext/digest/sha2/extconf.rb b/jni/ruby/ext/digest/sha2/extconf.rb
new file mode 100644
index 0000000..64ce4b6
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/extconf.rb
@@ -0,0 +1,32 @@
+# -*- coding: us-ascii -*-
+# $RoughId: extconf.rb,v 1.4 2001/08/14 19:54:51 knu Exp $
+# $Id: extconf.rb 47802 2014-10-05 02:03:55Z nobu $
+
+require "mkmf"
+
+$defs << "-DHAVE_CONFIG_H"
+$INCFLAGS << " -I$(srcdir)/.."
+
+$objs = [ "sha2init.#{$OBJEXT}" ]
+
+if !with_config("bundled-sha2") &&
+    (dir_config("openssl")
+     pkg_config("openssl")
+     require File.expand_path('../../../openssl/deprecation', __FILE__)
+     have_library("crypto")) &&
+    %w[SHA256 SHA512].all? {|d| OpenSSL.check_func("#{d}_Transform", "openssl/sha.h")} &&
+    %w[SHA256 SHA512].all? {|d| have_type("#{d}_CTX", "openssl/sha.h")}
+  $objs << "sha2ossl.#{$OBJEXT}"
+  $defs << "-DSHA2_USE_OPENSSL"
+else
+  have_type("u_int8_t")
+  $objs << "sha2.#{$OBJEXT}"
+end
+
+have_header("sys/cdefs.h")
+
+$preload = %w[digest]
+
+if have_type("uint64_t", "defs.h", $defs.join(' '))
+  create_makefile("digest/sha2")
+end
diff --git a/jni/ruby/ext/digest/sha2/lib/sha2.rb b/jni/ruby/ext/digest/sha2/lib/sha2.rb
new file mode 100644
index 0000000..fffc1f4
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/lib/sha2.rb
@@ -0,0 +1,107 @@
+#--
+# sha2.rb - defines Digest::SHA2 class which wraps up the SHA256,
+#           SHA384, and SHA512 classes.
+#++
+# Copyright (c) 2006 Akinori MUSHA <knu@iDaemons.org>
+#
+# All rights reserved.  You can redistribute and/or modify it under the same
+# terms as Ruby.
+#
+#   $Id: sha2.rb 35293 2012-04-10 22:41:04Z drbrain $
+
+require 'digest'
+require 'digest/sha2.so'
+
+module Digest
+  #
+  # A meta digest provider class for SHA256, SHA384 and SHA512.
+  #
+  class SHA2 < Digest::Class
+    # call-seq:
+    #   Digest::SHA2.new(bitlen = 256) -> digest_obj
+    #
+    # Creates a new SHA2 hash object with a given bit length.
+    #
+    # Valid bit lengths are 256, 384 and 512.
+    def initialize(bitlen = 256)
+      case bitlen
+      when 256
+        @sha2 = Digest::SHA256.new
+      when 384
+        @sha2 = Digest::SHA384.new
+      when 512
+        @sha2 = Digest::SHA512.new
+      else
+        raise ArgumentError, "unsupported bit length: %s" % bitlen.inspect
+      end
+      @bitlen = bitlen
+    end
+
+    # call-seq:
+    #   digest_obj.reset -> digest_obj
+    #
+    # Resets the digest to the initial state and returns self.
+    def reset
+      @sha2.reset
+      self
+    end
+
+    # call-seq:
+    #   digest_obj.update(string) -> digest_obj
+    #   digest_obj << string -> digest_obj
+    #
+    # Updates the digest using a given _string_ and returns self.
+    def update(str)
+      @sha2.update(str)
+      self
+    end
+    alias << update
+
+    def finish # :nodoc:
+      @sha2.digest!
+    end
+    private :finish
+
+
+    # call-seq:
+    #   digest_obj.block_length -> Integer
+    #
+    # Returns the block length of the digest in bytes.
+    #
+    #   Digest::SHA256.new.block_length * 8
+    #   # => 512
+    #   Digest::SHA384.new.block_length * 8
+    #   # => 1024
+    #   Digest::SHA512.new.block_length * 8
+    #   # => 1024
+    def block_length
+      @sha2.block_length
+    end
+
+    # call-seq:
+    #   digest_obj.digest_length -> Integer
+    #
+    # Returns the length of the hash value of the digest in bytes.
+    #
+    #   Digest::SHA256.new.digest_length * 8
+    #   # => 256
+    #   Digest::SHA384.new.digest_length * 8
+    #   # => 384
+    #   Digest::SHA512.new.digest_length * 8
+    #   # => 512
+    #
+    # For example, digests produced by Digest::SHA256 will always be 32 bytes
+    # (256 bits) in size.
+    def digest_length
+      @sha2.digest_length
+    end
+
+    def initialize_copy(other) # :nodoc:
+      @sha2 = other.instance_eval { @sha2.clone }
+    end
+
+    def inspect # :nodoc:
+      "#<%s:%d %s>" % [self.class.name, @bitlen, hexdigest]
+    end
+  end
+end
diff --git a/jni/ruby/ext/digest/sha2/sha2.c b/jni/ruby/ext/digest/sha2/sha2.c
new file mode 100644
index 0000000..8673801
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2.c
@@ -0,0 +1,1081 @@
+/*
+ * FILE:	sha2.c
+ * AUTHOR:	Aaron D. Gifford - http://www.aarongifford.com/
+ *
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $OrigId: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $
+ * $RoughId: sha2.c,v 1.3 2002/02/26 22:03:36 knu Exp $
+ * $Id: sha2.c 46827 2014-07-15 14:59:20Z nobu $
+ */
+
+#include "defs.h"
+#include <string.h>	/* memcpy()/memset() or bcopy()/bzero() */
+#include <assert.h>	/* assert() */
+#include "sha2.h"
+
+/*
+ * ASSERT NOTE:
+ * Some sanity checking code is included using assert().  On my FreeBSD
+ * system, this additional code can be removed by compiling with NDEBUG
+ * defined.  Check your own systems manpage on assert() to see how to
+ * compile WITHOUT the sanity checking code on your system.
+ *
+ * UNROLLED TRANSFORM LOOP NOTE:
+ * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform
+ * loop version for the hash transform rounds (defined using macros
+ * later in this file).  Either define on the command line, for example:
+ *
+ *   cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c
+ *
+ * or define below:
+ *
+ *   #define SHA2_UNROLL_TRANSFORM
+ *
+ */
+
+
+/*** SHA-256/384/512 Machine Architecture Definitions *****************/
+/*
+ * BYTE_ORDER NOTE:
+ *
+ * Please make sure that your system defines BYTE_ORDER.  If your
+ * architecture is little-endian, make sure it also defines
+ * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are
+ * equivilent.
+ *
+ * If your system does not define the above, then you can do so by
+ * hand like this:
+ *
+ *   #define LITTLE_ENDIAN 1234
+ *   #define BIG_ENDIAN    4321
+ *
+ * And for little-endian machines, add:
+ *
+ *   #define BYTE_ORDER LITTLE_ENDIAN
+ *
+ * Or for big-endian machines:
+ *
+ *   #define BYTE_ORDER BIG_ENDIAN
+ *
+ * The FreeBSD machine this was written on defines BYTE_ORDER
+ * appropriately by including <sys/types.h> (which in turn includes
+ * <machine/endian.h> where the appropriate definitions are actually
+ * made).
+ */
+#if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
+#error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
+#endif
+
+/*
+ * Define the followingsha2_* types to types of the correct length on
+ * the native archtecture.   Most BSD systems and Linux define u_intXX_t
+ * types.  Machines with very recent ANSI C headers, can use the
+ * uintXX_t definintions from inttypes.h by defining SHA2_USE_INTTYPES_H
+ * during compile or in the sha.h header file.
+ *
+ * Machines that support neither u_intXX_t nor inttypes.h's uintXX_t
+ * will need to define these three typedefs below (and the appropriate
+ * ones in sha.h too) by hand according to their system architecture.
+ *
+ * Thank you, Jun-ichiro itojun Hagino, for suggesting using u_intXX_t
+ * types and pointing out recent ANSI C support for uintXX_t in inttypes.h.
+ */
+#ifdef SHA2_USE_INTTYPES_H
+
+typedef uint8_t  sha2_byte;	/* Exactly 1 byte */
+typedef uint32_t sha2_word32;	/* Exactly 4 bytes */
+typedef uint64_t sha2_word64;	/* Exactly 8 bytes */
+
+#else /* SHA2_USE_INTTYPES_H */
+
+typedef u_int8_t  sha2_byte;	/* Exactly 1 byte */
+typedef u_int32_t sha2_word32;	/* Exactly 4 bytes */
+typedef u_int64_t sha2_word64;	/* Exactly 8 bytes */
+
+#endif /* SHA2_USE_INTTYPES_H */
+
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+/* NOTE: Most of these are in sha2.h */
+#define SHA256_SHORT_BLOCK_LENGTH	(SHA256_BLOCK_LENGTH - 8)
+#define SHA384_SHORT_BLOCK_LENGTH	(SHA384_BLOCK_LENGTH - 16)
+#define SHA512_SHORT_BLOCK_LENGTH	(SHA512_BLOCK_LENGTH - 16)
+
+
+#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || defined(__GNUC__) || defined(_HPUX_SOURCE) || defined(__IBMC__)
+#define ULL(number)	number##ULL
+#else
+#define ULL(number)	(uint64_t)(number)
+#endif
+/*** ENDIAN REVERSAL MACROS *******************************************/
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define REVERSE32(w,x)	{ \
+	sha2_word32 tmp = (w); \
+	tmp = (tmp >> 16) | (tmp << 16); \
+	(x) = ((tmp & (sha2_word32)0xff00ff00UL) >> 8) | ((tmp & (sha2_word32)0x00ff00ffUL) << 8); \
+}
+#define REVERSE64(w,x)	{ \
+	sha2_word64 tmp = (w); \
+	tmp = (tmp >> 32) | (tmp << 32); \
+	tmp = ((tmp & ULL(0xff00ff00ff00ff00)) >> 8) | \
+	      ((tmp & ULL(0x00ff00ff00ff00ff)) << 8); \
+	(x) = ((tmp & ULL(0xffff0000ffff0000)) >> 16) | \
+	      ((tmp & ULL(0x0000ffff0000ffff)) << 16); \
+}
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+/*
+ * Macro for incrementally adding the unsigned 64-bit integer n to the
+ * unsigned 128-bit integer (represented using a two-element array of
+ * 64-bit words):
+ */
+#define ADDINC128(w,n)	{ \
+	(w)[0] += (sha2_word64)(n); \
+	if ((w)[0] < (n)) { \
+		(w)[1]++; \
+	} \
+}
+
+/*
+ * Macros for copying blocks of memory and for zeroing out ranges
+ * of memory.  Using these macros makes it easy to switch from
+ * using memset()/memcpy() and using bzero()/bcopy().
+ *
+ * Please define either SHA2_USE_MEMSET_MEMCPY or define
+ * SHA2_USE_BZERO_BCOPY depending on which function set you
+ * choose to use:
+ */
+#if !defined(SHA2_USE_MEMSET_MEMCPY) && !defined(SHA2_USE_BZERO_BCOPY)
+/* Default to memset()/memcpy() if no option is specified */
+#define	SHA2_USE_MEMSET_MEMCPY	1
+#endif
+#if defined(SHA2_USE_MEMSET_MEMCPY) && defined(SHA2_USE_BZERO_BCOPY)
+/* Abort with an error if BOTH options are defined */
+#error Define either SHA2_USE_MEMSET_MEMCPY or SHA2_USE_BZERO_BCOPY, not both!
+#endif
+
+#ifdef SHA2_USE_MEMSET_MEMCPY
+#define MEMSET_BZERO(p,l)	memset((p), 0, (l))
+#define MEMCPY_BCOPY(d,s,l)	memcpy((d), (s), (l))
+#endif
+#ifdef SHA2_USE_BZERO_BCOPY
+#define MEMSET_BZERO(p,l)	bzero((p), (l))
+#define MEMCPY_BCOPY(d,s,l)	bcopy((s), (d), (l))
+#endif
+
+
+/*** THE SIX LOGICAL FUNCTIONS ****************************************/
+/*
+ * Bit shifting and rotation (used by the six SHA-XYZ logical functions:
+ *
+ *   NOTE:  The naming of R and S appears backwards here (R is a SHIFT and
+ *   S is a ROTATION) because the SHA-256/384/512 description document
+ *   (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this
+ *   same "backwards" definition.
+ */
+/* Shift-right (used in SHA-256, SHA-384, and SHA-512): */
+#define R(b,x) 		((x) >> (b))
+/* 32-bit Rotate-right (used in SHA-256): */
+#define S32(b,x)	(((x) >> (b)) | ((x) << (32 - (b))))
+/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */
+#define S64(b,x)	(((x) >> (b)) | ((x) << (64 - (b))))
+
+/* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */
+#define Ch(x,y,z)	(((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z)	(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+/* Four of six logical functions used in SHA-256: */
+#define Sigma0_256(x)	(S32(2,  (x)) ^ S32(13, (x)) ^ S32(22, (x)))
+#define Sigma1_256(x)	(S32(6,  (x)) ^ S32(11, (x)) ^ S32(25, (x)))
+#define sigma0_256(x)	(S32(7,  (x)) ^ S32(18, (x)) ^ R(3 ,   (x)))
+#define sigma1_256(x)	(S32(17, (x)) ^ S32(19, (x)) ^ R(10,   (x)))
+
+/* Four of six logical functions used in SHA-384 and SHA-512: */
+#define Sigma0_512(x)	(S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
+#define Sigma1_512(x)	(S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
+#define sigma0_512(x)	(S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7,   (x)))
+#define sigma1_512(x)	(S64(19, (x)) ^ S64(61, (x)) ^ R( 6,   (x)))
+
+/*** INTERNAL FUNCTION PROTOTYPES *************************************/
+/* NOTE: These should not be accessed directly from outside this
+ * library -- they are intended for private internal visibility/use
+ * only.
+ */
+void SHA512_Last(SHA512_CTX*);
+void SHA256_Transform(SHA256_CTX*, const sha2_word32*);
+void SHA512_Transform(SHA512_CTX*, const sha2_word64*);
+
+
+/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/
+/* Hash constant words K for SHA-256: */
+static const sha2_word32 K256[64] = {
+	0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+	0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+	0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+	0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+	0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+	0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+	0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+	0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+	0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+	0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+	0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+	0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+	0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+	0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+	0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+	0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+/* Initial hash value H for SHA-256: */
+static const sha2_word32 sha256_initial_hash_value[8] = {
+	0x6a09e667UL,
+	0xbb67ae85UL,
+	0x3c6ef372UL,
+	0xa54ff53aUL,
+	0x510e527fUL,
+	0x9b05688cUL,
+	0x1f83d9abUL,
+	0x5be0cd19UL
+};
+
+/* Hash constant words K for SHA-384 and SHA-512: */
+static const sha2_word64 K512[80] = {
+	ULL(0x428a2f98d728ae22), ULL(0x7137449123ef65cd),
+	ULL(0xb5c0fbcfec4d3b2f), ULL(0xe9b5dba58189dbbc),
+	ULL(0x3956c25bf348b538), ULL(0x59f111f1b605d019),
+	ULL(0x923f82a4af194f9b), ULL(0xab1c5ed5da6d8118),
+	ULL(0xd807aa98a3030242), ULL(0x12835b0145706fbe),
+	ULL(0x243185be4ee4b28c), ULL(0x550c7dc3d5ffb4e2),
+	ULL(0x72be5d74f27b896f), ULL(0x80deb1fe3b1696b1),
+	ULL(0x9bdc06a725c71235), ULL(0xc19bf174cf692694),
+	ULL(0xe49b69c19ef14ad2), ULL(0xefbe4786384f25e3),
+	ULL(0x0fc19dc68b8cd5b5), ULL(0x240ca1cc77ac9c65),
+	ULL(0x2de92c6f592b0275), ULL(0x4a7484aa6ea6e483),
+	ULL(0x5cb0a9dcbd41fbd4), ULL(0x76f988da831153b5),
+	ULL(0x983e5152ee66dfab), ULL(0xa831c66d2db43210),
+	ULL(0xb00327c898fb213f), ULL(0xbf597fc7beef0ee4),
+	ULL(0xc6e00bf33da88fc2), ULL(0xd5a79147930aa725),
+	ULL(0x06ca6351e003826f), ULL(0x142929670a0e6e70),
+	ULL(0x27b70a8546d22ffc), ULL(0x2e1b21385c26c926),
+	ULL(0x4d2c6dfc5ac42aed), ULL(0x53380d139d95b3df),
+	ULL(0x650a73548baf63de), ULL(0x766a0abb3c77b2a8),
+	ULL(0x81c2c92e47edaee6), ULL(0x92722c851482353b),
+	ULL(0xa2bfe8a14cf10364), ULL(0xa81a664bbc423001),
+	ULL(0xc24b8b70d0f89791), ULL(0xc76c51a30654be30),
+	ULL(0xd192e819d6ef5218), ULL(0xd69906245565a910),
+	ULL(0xf40e35855771202a), ULL(0x106aa07032bbd1b8),
+	ULL(0x19a4c116b8d2d0c8), ULL(0x1e376c085141ab53),
+	ULL(0x2748774cdf8eeb99), ULL(0x34b0bcb5e19b48a8),
+	ULL(0x391c0cb3c5c95a63), ULL(0x4ed8aa4ae3418acb),
+	ULL(0x5b9cca4f7763e373), ULL(0x682e6ff3d6b2b8a3),
+	ULL(0x748f82ee5defb2fc), ULL(0x78a5636f43172f60),
+	ULL(0x84c87814a1f0ab72), ULL(0x8cc702081a6439ec),
+	ULL(0x90befffa23631e28), ULL(0xa4506cebde82bde9),
+	ULL(0xbef9a3f7b2c67915), ULL(0xc67178f2e372532b),
+	ULL(0xca273eceea26619c), ULL(0xd186b8c721c0c207),
+	ULL(0xeada7dd6cde0eb1e), ULL(0xf57d4f7fee6ed178),
+	ULL(0x06f067aa72176fba), ULL(0x0a637dc5a2c898a6),
+	ULL(0x113f9804bef90dae), ULL(0x1b710b35131c471b),
+	ULL(0x28db77f523047d84), ULL(0x32caab7b40c72493),
+	ULL(0x3c9ebe0a15c9bebc), ULL(0x431d67c49c100d4c),
+	ULL(0x4cc5d4becb3e42b6), ULL(0x597f299cfc657e2a),
+	ULL(0x5fcb6fab3ad6faec), ULL(0x6c44198c4a475817)
+};
+
+/* Initial hash value H for SHA-384 */
+static const sha2_word64 sha384_initial_hash_value[8] = {
+	ULL(0xcbbb9d5dc1059ed8),
+	ULL(0x629a292a367cd507),
+	ULL(0x9159015a3070dd17),
+	ULL(0x152fecd8f70e5939),
+	ULL(0x67332667ffc00b31),
+	ULL(0x8eb44a8768581511),
+	ULL(0xdb0c2e0d64f98fa7),
+	ULL(0x47b5481dbefa4fa4)
+};
+
+/* Initial hash value H for SHA-512 */
+static const sha2_word64 sha512_initial_hash_value[8] = {
+	ULL(0x6a09e667f3bcc908),
+	ULL(0xbb67ae8584caa73b),
+	ULL(0x3c6ef372fe94f82b),
+	ULL(0xa54ff53a5f1d36f1),
+	ULL(0x510e527fade682d1),
+	ULL(0x9b05688c2b3e6c1f),
+	ULL(0x1f83d9abfb41bd6b),
+	ULL(0x5be0cd19137e2179)
+};
+
+/*
+ * Constant used by SHA256/384/512_End() functions for converting the
+ * digest to a readable hexadecimal character string:
+ */
+static const char *sha2_hex_digits = "0123456789abcdef";
+
+
+/*** SHA-256: *********************************************************/
+int SHA256_Init(SHA256_CTX* context) {
+	if (context == (SHA256_CTX*)0) {
+		return 0;
+	}
+	MEMCPY_BCOPY(context->state, sha256_initial_hash_value, SHA256_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA256_BLOCK_LENGTH);
+	context->bitcount = 0;
+	return 1;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-256 round macros: */
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+
+#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h)	\
+	REVERSE32(*data++, W256[j]); \
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
+             K256[j] + W256[j]; \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h)	\
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
+	     K256[j] + (W256[j] = *data++); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND256(a,b,c,d,e,f,g,h)	\
+	s0 = W256[(j+1)&0x0f]; \
+	s0 = sigma0_256(s0); \
+	s1 = W256[(j+14)&0x0f]; \
+	s1 = sigma1_256(s1); \
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + \
+	     (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+void SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
+	sha2_word32	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word32	T1, *W256;
+	int		j;
+
+	W256 = (sha2_word32*)context->buffer;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+		/* Rounds 0 to 15 (unrolled): */
+		ROUND256_0_TO_15(a,b,c,d,e,f,g,h);
+		ROUND256_0_TO_15(h,a,b,c,d,e,f,g);
+		ROUND256_0_TO_15(g,h,a,b,c,d,e,f);
+		ROUND256_0_TO_15(f,g,h,a,b,c,d,e);
+		ROUND256_0_TO_15(e,f,g,h,a,b,c,d);
+		ROUND256_0_TO_15(d,e,f,g,h,a,b,c);
+		ROUND256_0_TO_15(c,d,e,f,g,h,a,b);
+		ROUND256_0_TO_15(b,c,d,e,f,g,h,a);
+	} while (j < 16);
+
+	/* Now for the remaining rounds to 64: */
+	do {
+		ROUND256(a,b,c,d,e,f,g,h);
+		ROUND256(h,a,b,c,d,e,f,g);
+		ROUND256(g,h,a,b,c,d,e,f);
+		ROUND256(f,g,h,a,b,c,d,e);
+		ROUND256(e,f,g,h,a,b,c,d);
+		ROUND256(d,e,f,g,h,a,b,c);
+		ROUND256(c,d,e,f,g,h,a,b);
+		ROUND256(b,c,d,e,f,g,h,a);
+	} while (j < 64);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
+	sha2_word32	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word32	T1, T2, *W256;
+	int		j;
+
+	W256 = (sha2_word32*)context->buffer;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Copy data while converting to host byte order */
+		REVERSE32(*data++,W256[j]);
+		/* Apply the SHA-256 compression function to update a..h */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+		/* Apply the SHA-256 compression function to update a..h with copy */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++);
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+		T2 = Sigma0_256(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 16);
+
+	do {
+		/* Part of the message block expansion: */
+		s0 = W256[(j+1)&0x0f];
+		s0 = sigma0_256(s0);
+		s1 = W256[(j+14)&0x0f];
+		s1 = sigma1_256(s1);
+
+		/* Apply the SHA-256 compression function to update a..h */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
+		     (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
+		T2 = Sigma0_256(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 64);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void SHA256_Update(SHA256_CTX* context, const sha2_byte *data, size_t len) {
+	unsigned int	freespace, usedspace;
+
+	if (len == 0) {
+		/* Calling with no data is valid - we do nothing */
+		return;
+	}
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0 && data != (sha2_byte*)0);
+
+	usedspace = (unsigned int)((context->bitcount >> 3) % SHA256_BLOCK_LENGTH);
+	if (usedspace > 0) {
+		/* Calculate how much free space is available in the buffer */
+		freespace = SHA256_BLOCK_LENGTH - usedspace;
+
+		if (len >= freespace) {
+			/* Fill the buffer completely and process it */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
+			context->bitcount += freespace << 3;
+			len -= freespace;
+			data += freespace;
+			SHA256_Transform(context, (sha2_word32*)context->buffer);
+		} else {
+			/* The buffer is not yet full */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
+			context->bitcount += len << 3;
+			/* Clean up: */
+			usedspace = freespace = 0;
+			return;
+		}
+	}
+	while (len >= SHA256_BLOCK_LENGTH) {
+		/* Process as many complete blocks as we can */
+		MEMCPY_BCOPY(context->buffer, data, SHA256_BLOCK_LENGTH);
+		SHA256_Transform(context, (sha2_word32*)context->buffer);
+		context->bitcount += SHA256_BLOCK_LENGTH << 3;
+		len -= SHA256_BLOCK_LENGTH;
+		data += SHA256_BLOCK_LENGTH;
+	}
+	if (len > 0) {
+		/* There's left-overs, so save 'em */
+		MEMCPY_BCOPY(context->buffer, data, len);
+		context->bitcount += len << 3;
+	}
+	/* Clean up: */
+	usedspace = freespace = 0;
+}
+
+int SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
+	sha2_word32	*d = (sha2_word32*)digest;
+	unsigned int	usedspace;
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		usedspace = (unsigned int)((context->bitcount >> 3) % SHA256_BLOCK_LENGTH);
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Convert FROM host byte order */
+		REVERSE64(context->bitcount,context->bitcount);
+#endif
+		if (usedspace > 0) {
+			/* Begin padding with a 1 bit: */
+			context->buffer[usedspace++] = 0x80;
+
+			if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) {
+				/* Set-up for the last transform: */
+				MEMSET_BZERO(&context->buffer[usedspace], SHA256_SHORT_BLOCK_LENGTH - usedspace);
+			} else {
+				if (usedspace < SHA256_BLOCK_LENGTH) {
+					MEMSET_BZERO(&context->buffer[usedspace], SHA256_BLOCK_LENGTH - usedspace);
+				}
+				/* Do second-to-last transform: */
+				SHA256_Transform(context, (sha2_word32*)context->buffer);
+
+				/* And set-up for the last transform: */
+				MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
+			}
+		} else {
+			/* Set-up for the last transform: */
+			MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
+
+			/* Begin padding with a 1 bit: */
+			*context->buffer = 0x80;
+		}
+		/* Set the bit count: */
+		MEMCPY_BCOPY(&context->buffer[SHA256_SHORT_BLOCK_LENGTH], &context->bitcount,
+			     sizeof(sha2_word64));
+
+		/* Final transform: */
+		SHA256_Transform(context, (sha2_word32*)context->buffer);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 8; j++) {
+				REVERSE32(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA256_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Clean up state data: */
+	MEMSET_BZERO(context, sizeof(*context));
+	usedspace = 0;
+	return 1;
+}
+
+char *SHA256_End(SHA256_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA256_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA256_Final(digest, context);
+		for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA256_Data(const sha2_byte* data, size_t len, char digest[SHA256_DIGEST_STRING_LENGTH]) {
+	SHA256_CTX	context;
+
+	SHA256_Init(&context);
+	SHA256_Update(&context, data, len);
+	return SHA256_End(&context, digest);
+}
+
+
+/*** SHA-512: *********************************************************/
+int SHA512_Init(SHA512_CTX* context) {
+	if (context == (SHA512_CTX*)0) {
+		return 0;
+	}
+	MEMCPY_BCOPY(context->state, sha512_initial_hash_value, SHA512_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH);
+	context->bitcount[0] = context->bitcount[1] =  0;
+	return 1;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-512 round macros: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+
+#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h)	\
+	REVERSE64(*data++, W512[j]); \
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
+             K512[j] + W512[j]; \
+	(d) += T1, \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)), \
+	j++
+
+
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h)	\
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
+             K512[j] + (W512[j] = *data++); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
+	j++
+
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND512(a,b,c,d,e,f,g,h)	\
+	s0 = W512[(j+1)&0x0f]; \
+	s0 = sigma0_512(s0); \
+	s1 = W512[(j+14)&0x0f]; \
+	s1 = sigma1_512(s1); \
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + \
+             (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
+	j++
+
+void SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
+	sha2_word64	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word64	T1, *W512 = (sha2_word64*)context->buffer;
+	int		j;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+		ROUND512_0_TO_15(a,b,c,d,e,f,g,h);
+		ROUND512_0_TO_15(h,a,b,c,d,e,f,g);
+		ROUND512_0_TO_15(g,h,a,b,c,d,e,f);
+		ROUND512_0_TO_15(f,g,h,a,b,c,d,e);
+		ROUND512_0_TO_15(e,f,g,h,a,b,c,d);
+		ROUND512_0_TO_15(d,e,f,g,h,a,b,c);
+		ROUND512_0_TO_15(c,d,e,f,g,h,a,b);
+		ROUND512_0_TO_15(b,c,d,e,f,g,h,a);
+	} while (j < 16);
+
+	/* Now for the remaining rounds up to 79: */
+	do {
+		ROUND512(a,b,c,d,e,f,g,h);
+		ROUND512(h,a,b,c,d,e,f,g);
+		ROUND512(g,h,a,b,c,d,e,f);
+		ROUND512(f,g,h,a,b,c,d,e);
+		ROUND512(e,f,g,h,a,b,c,d);
+		ROUND512(d,e,f,g,h,a,b,c);
+		ROUND512(c,d,e,f,g,h,a,b);
+		ROUND512(b,c,d,e,f,g,h,a);
+	} while (j < 80);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
+	sha2_word64	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word64	T1, T2, *W512 = (sha2_word64*)context->buffer;
+	int		j;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Convert TO host byte order */
+		REVERSE64(*data++, W512[j]);
+		/* Apply the SHA-512 compression function to update a..h */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+		/* Apply the SHA-512 compression function to update a..h with copy */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++);
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+		T2 = Sigma0_512(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 16);
+
+	do {
+		/* Part of the message block expansion: */
+		s0 = W512[(j+1)&0x0f];
+		s0 = sigma0_512(s0);
+		s1 = W512[(j+14)&0x0f];
+		s1 =  sigma1_512(s1);
+
+		/* Apply the SHA-512 compression function to update a..h */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
+		     (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
+		T2 = Sigma0_512(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 80);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len) {
+	unsigned int	freespace, usedspace;
+
+	if (len == 0) {
+		/* Calling with no data is valid - we do nothing */
+		return;
+	}
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0 && data != (sha2_byte*)0);
+
+	usedspace = (unsigned int)((context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH);
+	if (usedspace > 0) {
+		/* Calculate how much free space is available in the buffer */
+		freespace = SHA512_BLOCK_LENGTH - usedspace;
+
+		if (len >= freespace) {
+			/* Fill the buffer completely and process it */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
+			ADDINC128(context->bitcount, freespace << 3);
+			len -= freespace;
+			data += freespace;
+			SHA512_Transform(context, (sha2_word64*)context->buffer);
+		} else {
+			/* The buffer is not yet full */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
+			ADDINC128(context->bitcount, len << 3);
+			/* Clean up: */
+			usedspace = freespace = 0;
+			return;
+		}
+	}
+	while (len >= SHA512_BLOCK_LENGTH) {
+		/* Process as many complete blocks as we can */
+		MEMCPY_BCOPY(context->buffer, data, SHA512_BLOCK_LENGTH);
+		SHA512_Transform(context, (sha2_word64*)context->buffer);
+		ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
+		len -= SHA512_BLOCK_LENGTH;
+		data += SHA512_BLOCK_LENGTH;
+	}
+	if (len > 0) {
+		/* There's left-overs, so save 'em */
+		MEMCPY_BCOPY(context->buffer, data, len);
+		ADDINC128(context->bitcount, len << 3);
+	}
+	/* Clean up: */
+	usedspace = freespace = 0;
+}
+
+void SHA512_Last(SHA512_CTX* context) {
+	unsigned int	usedspace;
+
+	usedspace = (unsigned int)((context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH);
+#if BYTE_ORDER == LITTLE_ENDIAN
+	/* Convert FROM host byte order */
+	REVERSE64(context->bitcount[0],context->bitcount[0]);
+	REVERSE64(context->bitcount[1],context->bitcount[1]);
+#endif
+	if (usedspace > 0) {
+		/* Begin padding with a 1 bit: */
+		context->buffer[usedspace++] = 0x80;
+
+		if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) {
+			/* Set-up for the last transform: */
+			MEMSET_BZERO(&context->buffer[usedspace], SHA512_SHORT_BLOCK_LENGTH - usedspace);
+		} else {
+			if (usedspace < SHA512_BLOCK_LENGTH) {
+				MEMSET_BZERO(&context->buffer[usedspace], SHA512_BLOCK_LENGTH - usedspace);
+			}
+			/* Do second-to-last transform: */
+			SHA512_Transform(context, (sha2_word64*)context->buffer);
+
+			/* And set-up for the last transform: */
+			MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH - 2);
+		}
+	} else {
+		/* Prepare for final transform: */
+		MEMSET_BZERO(context->buffer, SHA512_SHORT_BLOCK_LENGTH);
+
+		/* Begin padding with a 1 bit: */
+		*context->buffer = 0x80;
+	}
+	/* Store the length of input data (in bits): */
+	MEMCPY_BCOPY(&context->buffer[SHA512_SHORT_BLOCK_LENGTH], &context->bitcount[1],
+		     sizeof(sha2_word64));
+	MEMCPY_BCOPY(&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8], &context->bitcount[0],
+		     sizeof(sha2_word64));
+
+	/* Final transform: */
+	SHA512_Transform(context, (sha2_word64*)context->buffer);
+}
+
+int SHA512_Final(sha2_byte digest[], SHA512_CTX* context) {
+	sha2_word64	*d = (sha2_word64*)digest;
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		SHA512_Last(context);
+
+		/* Save the hash data for output: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 8; j++) {
+				REVERSE64(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA512_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Zero out state data */
+	MEMSET_BZERO(context, sizeof(*context));
+	return 1;
+}
+
+char *SHA512_End(SHA512_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA512_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA512_Final(digest, context);
+		for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA512_Data(const sha2_byte* data, size_t len, char digest[SHA512_DIGEST_STRING_LENGTH]) {
+	SHA512_CTX	context;
+
+	SHA512_Init(&context);
+	SHA512_Update(&context, data, len);
+	return SHA512_End(&context, digest);
+}
+
+
+/*** SHA-384: *********************************************************/
+int SHA384_Init(SHA384_CTX* context) {
+	if (context == (SHA384_CTX*)0) {
+		return 0;
+	}
+	MEMCPY_BCOPY(context->state, sha384_initial_hash_value, SHA512_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA384_BLOCK_LENGTH);
+	context->bitcount[0] = context->bitcount[1] = 0;
+	return 1;
+}
+
+void SHA384_Update(SHA384_CTX* context, const sha2_byte* data, size_t len) {
+	SHA512_Update((SHA512_CTX*)context, data, len);
+}
+
+int SHA384_Final(sha2_byte digest[], SHA384_CTX* context) {
+	sha2_word64	*d = (sha2_word64*)digest;
+
+	/* Sanity check: */
+	assert(context != (SHA384_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		SHA512_Last((SHA512_CTX*)context);
+
+		/* Save the hash data for output: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 6; j++) {
+				REVERSE64(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA384_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Zero out state data */
+	MEMSET_BZERO(context, sizeof(*context));
+	return 1;
+}
+
+char *SHA384_End(SHA384_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA384_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA384_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA384_Final(digest, context);
+		for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA384_Data(const sha2_byte* data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH]) {
+	SHA384_CTX	context;
+
+	SHA384_Init(&context);
+	SHA384_Update(&context, data, len);
+	return SHA384_End(&context, digest);
+}
+
diff --git a/jni/ruby/ext/digest/sha2/sha2.h b/jni/ruby/ext/digest/sha2/sha2.h
new file mode 100644
index 0000000..8d1734e
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2.h
@@ -0,0 +1,225 @@
+/*
+ * FILE:	sha2.h
+ * AUTHOR:	Aaron D. Gifford - http://www.aarongifford.com/
+ *
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $OrigId: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
+ * $RoughId: sha2.h,v 1.3 2002/02/24 08:14:32 knu Exp $
+ * $Id: sha2.h 46827 2014-07-15 14:59:20Z nobu $
+ */
+
+#ifndef __SHA2_H__
+#define __SHA2_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Import u_intXX_t size_t type definitions from system headers.  You
+ * may need to change this, or define these things yourself in this
+ * file.
+ */
+#include <sys/types.h>
+
+#ifdef RUBY
+# ifdef HAVE_PROTOTYPES
+#  undef NOPROTO
+# else
+#  define NOPROTO
+# endif /* HAVE_PROTOTYPES */
+# ifndef BYTE_ORDER
+#  define LITTLE_ENDIAN	1234
+#  define BIG_ENDIAN	4321
+#  ifdef WORDS_BIGENDIAN
+#   define BYTE_ORDER	BIG_ENDIAN
+#  else
+#   define BYTE_ORDER	LITTLE_ENDIAN
+#  endif
+# endif /* BYTE_ORDER */
+# define SHA2_USE_INTTYPES_H
+#else /* RUBY */
+#ifdef SHA2_USE_INTTYPES_H
+
+#include <inttypes.h>
+
+#endif /* SHA2_USE_INTTYPES_H */
+#endif /* RUBY */
+
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+#define SHA256_BLOCK_LENGTH		64
+#define SHA256_DIGEST_LENGTH		32
+#define SHA256_DIGEST_STRING_LENGTH	(SHA256_DIGEST_LENGTH * 2 + 1)
+#define SHA384_BLOCK_LENGTH		128
+#define SHA384_DIGEST_LENGTH		48
+#define SHA384_DIGEST_STRING_LENGTH	(SHA384_DIGEST_LENGTH * 2 + 1)
+#define SHA512_BLOCK_LENGTH		128
+#define SHA512_DIGEST_LENGTH		64
+#define SHA512_DIGEST_STRING_LENGTH	(SHA512_DIGEST_LENGTH * 2 + 1)
+
+
+/*** SHA-256/384/512 Context Structures *******************************/
+/* NOTE: If your architecture does not define either u_intXX_t types or
+ * uintXX_t (from inttypes.h), you may need to define things by hand
+ * for your system:
+ */
+#ifndef SHA2_USE_INTTYPES_H
+# ifdef HAVE_U_INT8_T
+typedef u_int8_t uint8_t;		/* 1-byte  (8-bits)  */
+typedef u_int32_t uint32_t;		/* 4-bytes (32-bits) */
+typedef u_int64_t uint64_t;		/* 8-bytes (64-bits) */
+# else
+typedef unsigned char uint8_t;		/* 1-byte  (8-bits)  */
+typedef unsigned int uint32_t;		/* 4-bytes (32-bits) */
+typedef unsigned long long uint64_t;	/* 8-bytes (64-bits) */
+# endif
+#endif
+
+/*
+ * Most BSD systems already define u_intXX_t types, as does Linux.
+ * Some systems, however, like Compaq's Tru64 Unix instead can use
+ * uintXX_t types defined by very recent ANSI C standards and included
+ * in the file:
+ *
+ *   #include <inttypes.h>
+ *
+ * If you choose to use <inttypes.h> then please define:
+ *
+ *   #define SHA2_USE_INTTYPES_H
+ *
+ * Or on the command line during compile:
+ *
+ *   cc -DSHA2_USE_INTTYPES_H ...
+ */
+typedef struct _SHA256_CTX {
+	uint32_t	state[8];
+	uint64_t	bitcount;
+	uint8_t	buffer[SHA256_BLOCK_LENGTH];
+} SHA256_CTX;
+typedef struct _SHA512_CTX {
+	uint64_t	state[8];
+	uint64_t	bitcount[2];
+	uint8_t	buffer[SHA512_BLOCK_LENGTH];
+} SHA512_CTX;
+
+typedef SHA512_CTX SHA384_CTX;
+
+
+/*** SHA-256/384/512 Function Prototypes ******************************/
+#ifdef RUBY
+#define SHA256_Init		rb_Digest_SHA256_Init
+#define SHA256_Update		rb_Digest_SHA256_Update
+#define SHA256_Finish		rb_Digest_SHA256_Finish
+#define SHA256_Data		rb_Digest_SHA256_Data
+#define SHA256_End		rb_Digest_SHA256_End
+#define SHA256_Last		rb_Digest_SHA256_Last
+#define SHA256_Transform	rb_Digest_SHA256_Transform
+#define SHA256_Final(d, c)	SHA256_Finish(c, d)
+
+#define SHA384_Init		rb_Digest_SHA384_Init
+#define SHA384_Update		rb_Digest_SHA384_Update
+#define SHA384_Finish		rb_Digest_SHA384_Finish
+#define SHA384_Data		rb_Digest_SHA384_Data
+#define SHA384_End		rb_Digest_SHA384_End
+#define SHA384_Last		rb_Digest_SHA384_Last
+#define SHA384_Transform	rb_Digest_SHA384_Transform
+#define SHA384_Final(d, c)	SHA384_Finish(c, d)
+
+#define SHA512_Init		rb_Digest_SHA512_Init
+#define SHA512_Update		rb_Digest_SHA512_Update
+#define SHA512_Finish		rb_Digest_SHA512_Finish
+#define SHA512_Data		rb_Digest_SHA512_Data
+#define SHA512_End		rb_Digest_SHA512_End
+#define SHA512_Last		rb_Digest_SHA512_Last
+#define SHA512_Transform	rb_Digest_SHA512_Transform
+#define SHA512_Final(d, c)	SHA512_Finish(c, d)
+#endif /* RUBY */
+
+#ifndef NOPROTO
+
+int SHA256_Init(SHA256_CTX *);
+void SHA256_Update(SHA256_CTX*, const uint8_t*, size_t);
+int SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
+char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
+char* SHA256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
+
+int SHA384_Init(SHA384_CTX*);
+void SHA384_Update(SHA384_CTX*, const uint8_t*, size_t);
+int SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
+char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
+char* SHA384_Data(const uint8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
+
+int SHA512_Init(SHA512_CTX*);
+void SHA512_Update(SHA512_CTX*, const uint8_t*, size_t);
+int SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
+char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
+char* SHA512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
+
+#else /* NOPROTO */
+
+int SHA256_Init();
+void SHA256_Update();
+#ifdef RUBY
+int SHA256_Finish();
+#else
+int SHA256_Final();
+#endif /* RUBY */
+char* SHA256_End();
+char* SHA256_Data();
+
+int SHA384_Init();
+void SHA384_Update();
+#ifdef RUBY
+int SHA384_Finish();
+#else
+int SHA384_Final();
+#endif /* RUBY */
+char* SHA384_End();
+char* SHA384_Data();
+
+int SHA512_Init();
+void SHA512_Update();
+#ifdef RUBY
+int SHA512_Finish();
+#else
+int SHA512_Final();
+#endif /* RUBY */
+char* SHA512_End();
+char* SHA512_Data();
+
+#endif /* NOPROTO */
+
+#ifdef	__cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __SHA2_H__ */
+
diff --git a/jni/ruby/ext/digest/sha2/sha2init.c b/jni/ruby/ext/digest/sha2/sha2init.c
new file mode 100644
index 0000000..a48a967
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2init.c
@@ -0,0 +1,58 @@
+/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */
+/* $Id: sha2init.c 47745 2014-09-30 08:29:02Z nobu $ */
+
+#include "digest.h"
+#if defined(SHA2_USE_OPENSSL)
+#include "sha2ossl.h"
+#else
+#include "sha2.h"
+#endif
+
+#define FOREACH_BITLEN(func)	func(256) func(384) func(512)
+
+#define DEFINE_ALGO_METADATA(bitlen) \
+static const rb_digest_metadata_t sha##bitlen = { \
+    RUBY_DIGEST_API_VERSION, \
+    SHA##bitlen##_DIGEST_LENGTH, \
+    SHA##bitlen##_BLOCK_LENGTH, \
+    sizeof(SHA##bitlen##_CTX), \
+    (rb_digest_hash_init_func_t)SHA##bitlen##_Init, \
+    (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
+    (rb_digest_hash_finish_func_t)SHA##bitlen##_Finish, \
+};
+
+FOREACH_BITLEN(DEFINE_ALGO_METADATA)
+
+/*
+ * Classes for calculating message digests using the SHA-256/384/512
+ * Secure Hash Algorithm(s) by NIST (the US' National Institute of
+ * Standards and Technology), described in FIPS PUB 180-2.
+ */
+void
+Init_sha2(void)
+{
+    VALUE mDigest, cDigest_Base;
+    ID id_metadata;
+
+#define DECLARE_ALGO_CLASS(bitlen) \
+    VALUE cDigest_SHA##bitlen;
+
+    FOREACH_BITLEN(DECLARE_ALGO_CLASS)
+
+    rb_require("digest");
+
+    id_metadata = rb_intern("metadata");
+
+    mDigest = rb_path2class("Digest");
+    cDigest_Base = rb_path2class("Digest::Base");
+
+#define DEFINE_ALGO_CLASS(bitlen) \
+    cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
+\
+    rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \
+		Data_Wrap_Struct(0, 0, 0, (void *)&sha##bitlen));
+
+#undef RUBY_UNTYPED_DATA_WARNING
+#define RUBY_UNTYPED_DATA_WARNING 0
+    FOREACH_BITLEN(DEFINE_ALGO_CLASS)
+}
diff --git a/jni/ruby/ext/digest/sha2/sha2ossl.c b/jni/ruby/ext/digest/sha2/sha2ossl.c
new file mode 100644
index 0000000..34353be
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2ossl.c
@@ -0,0 +1,13 @@
+#include "defs.h"
+#include "sha2ossl.h"
+
+#define SHA_Finish(bit) \
+    void SHA##bit##_Finish(SHA##bit##_CTX *ctx, char *buf) \
+    { SHA##bit##_Final((unsigned char *)buf, ctx);}
+#ifndef __DragonFly__
+#define SHA384_Final SHA512_Final
+#endif
+
+SHA_Finish(256)
+SHA_Finish(384)
+SHA_Finish(512)
diff --git a/jni/ruby/ext/digest/sha2/sha2ossl.h b/jni/ruby/ext/digest/sha2/sha2ossl.h
new file mode 100644
index 0000000..4229d14
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2ossl.h
@@ -0,0 +1,17 @@
+#ifndef SHA2OSSL_H_INCLUDED
+#define SHA2OSSL_H_INCLUDED
+
+#include <stddef.h>
+#include <openssl/sha.h>
+
+#define SHA256_BLOCK_LENGTH	SHA256_CBLOCK
+#define SHA384_BLOCK_LENGTH	SHA512_CBLOCK
+#define SHA512_BLOCK_LENGTH	SHA512_CBLOCK
+
+typedef SHA512_CTX SHA384_CTX;
+
+void SHA256_Finish(SHA256_CTX *ctx, char *buf);
+void SHA384_Finish(SHA384_CTX *ctx, char *buf);
+void SHA512_Finish(SHA512_CTX *ctx, char *buf);
+
+#endif