diff --git a/README.md b/README.md
index 75b85b6..d836fc9 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ If it doesn't work, please leave an issue together with your phone/OS/wechat ver
 + python-PIL
 + [PyQuery](https://pypi.python.org/pypi/pyquery/1.2.1)
 + [pysox](https://pypi.python.org/pypi/pysox/0.3.6.alpha) and sox
-+ [pysqlcipher](https://pypi.python.org/pypi/pysqlcipher)
++ [sqlcipher](https://github.com/sqlcipher/sqlcipher) >= 4.1 and [pysqlcipher](https://pypi.python.org/pypi/pysqlcipher)
 + numpy
 + csscompressor (suggested, optional)
 + adb and rooted android phone connected to a Linux/Mac OSX/Win10+Bash.
diff --git a/android-interact.sh b/android-interact.sh
index 0092d8b..069cd02 100755
--- a/android-interact.sh
+++ b/android-interact.sh
@@ -55,7 +55,7 @@ elif [[ $1 == "db" || $1 == "res" ]]; then
 		echo "Pulling resources... "
 		for d in avatar image2 voice2 emoji video sfs; do
 			adb shell "cd $RES_DIR/$chooseUser &&
-								 busybox tar czf - $d 2>/dev/null | busybox base64" |
+								 tar czf - $d 2>/dev/null | base64" |
 					base64 -di | tar xzf -
 
 			# Old Slow Way:
diff --git a/decrypt-db.py b/decrypt-db.py
index 86924f4..1c346f0 100755
--- a/decrypt-db.py
+++ b/decrypt-db.py
@@ -47,9 +47,8 @@ if __name__ == '__main__':
     conn = sqlite.connect(args.db)
     c = conn.cursor()
     c.execute("PRAGMA key = '" + key + "';")
-    c.execute("PRAGMA cipher_use_hmac = OFF;")
-    c.execute("PRAGMA cipher_page_size = 1024;")
-    c.execute("PRAGMA kdf_iter = 4000;")
+    # https://github.com/sqlcipher/sqlcipher/commit/e4b66d6cc8a2b7547a32ff2c3ac52f148eba3516
+    c.execute("PRAGMA cipher_compatibility = 1;")
     c.execute("ATTACH DATABASE '" + args.output + "' AS db KEY '';")
     c.execute("SELECT sqlcipher_export('db');" )
     c.execute("DETACH DATABASE db;" )
diff --git a/dump-html.py b/dump-html.py
index f43d91e..69d649b 100755
--- a/dump-html.py
+++ b/dump-html.py
@@ -49,6 +49,8 @@ if __name__ == '__main__':
         with open(output_file, 'w') as f:
             print >> f, htmls[0].encode('utf-8')
     else:
+        assert output_file.endswith(".html")
+        basename = output_file[:-5]
         for idx, html in enumerate(htmls):
-            with open(output_file + '.{}'.format(idx), 'w') as f:
+            with open(basename + '.{}'.format(idx) + '.html', 'w') as f:
                 print >> f, html.encode('utf-8')
diff --git a/legacy/decrypt-db.sh b/legacy/decrypt-db.sh
index d39bd4e..ba5f132 100755
--- a/legacy/decrypt-db.sh
+++ b/legacy/decrypt-db.sh
@@ -1,7 +1,6 @@
 #!/bin/bash -e
 # File: decrypt-db.sh
 # Date: Tue Jun 16 22:23:13 2015 +0800
-# Author: Yuxin Wu
 
 source compatibility.sh
 
@@ -21,24 +20,15 @@ if [[ -f $output ]]; then
 	[[ $r == "y" ]] && rm -v $output || exit 1
 fi
 
-
 KEY=$(echo -n "$imei$uin" | $MD5SUM | cut -b 1-7)
 echo "KEY: $KEY"
 
-uname | grep Darwin > /dev/null && os=darwin || os=linux
-uname -m | grep x86_64 > /dev/null && version=64bit || version=32bit
-echo "Use $version sqlcipher of $os."
+echo "Dump decrypted database... "
 
-echo "Dump decrypted database... (Don't worry about libcrypt.so version warning.)"
-
-
-SQLCIPHER=./sqlcipher/$os/$version
-export LD_LIBRARY_PATH=$SQLCIPHER
-"$SQLCIPHER"/sqlcipher "$MSGDB" << EOF
+# https://github.com/sqlcipher/sqlcipher/commit/e4b66d6cc8a2b7547a32ff2c3ac52f148eba3516
+sqlcipher "$MSGDB" << EOF
 PRAGMA key='$KEY';
-PRAGMA cipher_use_hmac = off;
-PRAGMA cipher_page_size = 1024;
-PRAGMA kdf_iter = 4000;
+PRAGMA cipher_compatibility = 1;
 ATTACH DATABASE "$output" AS db KEY "";
 SELECT sqlcipher_export("db");
 DETACH DATABASE db;
diff --git a/legacy/sqlcipher/LICENSE b/legacy/sqlcipher/LICENSE
deleted file mode 100644
index bebe1e7..0000000
--- a/legacy/sqlcipher/LICENSE
+++ /dev/null
@@ -1,24 +0,0 @@
-Copyright (c) 2008, ZETETIC LLC
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    * 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.
-    * Neither the name of the ZETETIC LLC nor the
-      names of its contributors may be used to endorse or promote products
-      derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''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 ZETETIC LLC 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.
diff --git a/legacy/sqlcipher/README.md b/legacy/sqlcipher/README.md
deleted file mode 100644
index b047dce..0000000
--- a/legacy/sqlcipher/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-
-## NOTE
-
-For convenience, I include the binary version of sqlcipher 2.1.1.
-
-User can also choose to download and install sqlcipher 2.1.1 from their trusted source, such as:
-https://launchpad.net/ubuntu/+source/sqlcipher/2.1.1-2
diff --git a/legacy/sqlcipher/darwin/64bit/.libs/sqlite3 b/legacy/sqlcipher/darwin/64bit/.libs/sqlite3
deleted file mode 100755
index 6edeab1..0000000
Binary files a/legacy/sqlcipher/darwin/64bit/.libs/sqlite3 and /dev/null differ
diff --git a/legacy/sqlcipher/darwin/64bit/sqlcipher b/legacy/sqlcipher/darwin/64bit/sqlcipher
deleted file mode 100755
index 8546113..0000000
--- a/legacy/sqlcipher/darwin/64bit/sqlcipher
+++ /dev/null
@@ -1,130 +0,0 @@
-#! /bin/sh
-
-# sqlite3 - temporary wrapper script for .libs/sqlite3
-# Generated by ltmain.sh (GNU libtool) 2.2.6
-#
-# The sqlite3 program cannot be directly executed until all the libtool
-# libraries that it depends on are installed.
-#
-# This wrapper script should never be moved out of the build directory.
-# If it is, it will not operate correctly.
-
-# Sed substitution that helps us do robust quoting.  It backslashifies
-# metacharacters that are still active within double-quoted strings.
-Xsed='/opt/local/bin/gsed -e 1s/^X//'
-sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
-
-# Be Bourne compatible
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
-fi
-BIN_SH=xpg4; export BIN_SH # for Tru64
-DUALCASE=1; export DUALCASE # for MKS sh
-
-# The HP-UX ksh and POSIX shell print the target directory to stdout
-# if CDPATH is set.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-
-relink_command=""
-
-# This environment variable determines our operation mode.
-if test "$libtool_install_magic" = "%%%MAGIC variable%%%"; then
-  # install mode needs the following variables:
-  generated_by_libtool_version='2.2.6'
-  notinst_deplibs=' libsqlite3.la'
-else
-  # When we are sourced in execute mode, $file and $ECHO are already set.
-  if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
-    ECHO="/bin/echo"
-    file="$0"
-    # Make sure echo works.
-    if test "X$1" = X--no-reexec; then
-      # Discard the --no-reexec flag, and continue.
-      shift
-    elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t'; then
-      # Yippee, $ECHO works!
-      :
-    else
-      # Restart under the correct shell, and then maybe $ECHO will work.
-      exec /bin/sh "$0" --no-reexec ${1+"$@"}
-    fi
-  fi
-
-  # Find the directory that this script lives in.
-  thisdir=`$ECHO "X$file" | $Xsed -e 's%/[^/]*$%%'`
-  test "x$thisdir" = "x$file" && thisdir=.
-
-  # Follow symbolic links until we get to the real thisdir.
-  file=`ls -ld "$file" | /opt/local/bin/gsed -n 's/.*-> //p'`
-  while test -n "$file"; do
-    destdir=`$ECHO "X$file" | $Xsed -e 's%/[^/]*$%%'`
-
-    # If there was a directory component, then change thisdir.
-    if test "x$destdir" != "x$file"; then
-      case "$destdir" in
-      [\\/]* | [A-Za-z]:[\\/]*) thisdir="$destdir" ;;
-      *) thisdir="$thisdir/$destdir" ;;
-      esac
-    fi
-
-    file=`$ECHO "X$file" | $Xsed -e 's%^.*/%%'`
-    file=`ls -ld "$thisdir/$file" | /opt/local/bin/gsed -n 's/.*-> //p'`
-  done
-
-
-  # Usually 'no', except on cygwin/mingw when embedded into
-  # the cwrapper.
-  WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=no
-  if test "$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR" = "yes"; then
-    # special case for '.'
-    if test "$thisdir" = "."; then
-      thisdir=`pwd`
-    fi
-    # remove .libs from thisdir
-    case "$thisdir" in
-    *[\\/].libs ) thisdir=`$ECHO "X$thisdir" | $Xsed -e 's%[\\/][^\\/]*$%%'` ;;
-    .libs )   thisdir=. ;;
-    esac
-  fi
-
-  # Try to get the absolute directory name.
-  absdir=`cd "$thisdir" && pwd`
-  test -n "$absdir" && thisdir="$absdir"
-
-  program='sqlite3'
-  progdir="$thisdir/.libs"
-
-
-  if test -f "$progdir/$program"; then
-    # Add our own library path to DYLD_LIBRARY_PATH
-    DYLD_LIBRARY_PATH="/Users/vuryleo/Projects/sqlcipher/.libs:$DYLD_LIBRARY_PATH"
-
-    # Some systems cannot cope with colon-terminated DYLD_LIBRARY_PATH
-    # The second colon is a workaround for a bug in BeOS R4 sed
-    DYLD_LIBRARY_PATH=`$ECHO "X$DYLD_LIBRARY_PATH" | $Xsed -e 's/::*$//'`
-
-    export DYLD_LIBRARY_PATH
-
-    if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
-      # Run the actual program with our arguments.
-
-      exec "$progdir/$program" ${1+"$@"}
-
-      $ECHO "$0: cannot exec $program $*" 1>&2
-      exit 1
-    fi
-  else
-    # The program doesn't exist.
-    $ECHO "$0: error: \`$progdir/$program' does not exist" 1>&2
-    $ECHO "This script is just a wrapper for $program." 1>&2
-    /bin/echo "See the libtool documentation for more information." 1>&2
-    exit 1
-  fi
-fi
diff --git a/legacy/sqlcipher/linux/32bit/libsqlcipher.so.0 b/legacy/sqlcipher/linux/32bit/libsqlcipher.so.0
deleted file mode 100644
index b7991c9..0000000
Binary files a/legacy/sqlcipher/linux/32bit/libsqlcipher.so.0 and /dev/null differ
diff --git a/legacy/sqlcipher/linux/32bit/sqlcipher b/legacy/sqlcipher/linux/32bit/sqlcipher
deleted file mode 100755
index b2b94cb..0000000
Binary files a/legacy/sqlcipher/linux/32bit/sqlcipher and /dev/null differ
diff --git a/legacy/sqlcipher/linux/64bit/libsqlcipher.so.0 b/legacy/sqlcipher/linux/64bit/libsqlcipher.so.0
deleted file mode 100644
index 04ccce3..0000000
Binary files a/legacy/sqlcipher/linux/64bit/libsqlcipher.so.0 and /dev/null differ
diff --git a/legacy/sqlcipher/linux/64bit/sqlcipher b/legacy/sqlcipher/linux/64bit/sqlcipher
deleted file mode 100755
index 4f3b3d4..0000000
Binary files a/legacy/sqlcipher/linux/64bit/sqlcipher and /dev/null differ