diff --git a/README.md b/README.md
index e69de29..9370599 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,42 @@
+OpenSSL
+==========
+
+fork of [OpenSSL](https://github.com/dirk/OpenSSL.jl)
+
+convert for julia 0.4-
+
+
+# how to use it
+
+```julia
+import OpenSSL
+
+OpenSSL.init()
+s = OpenSSL.Digest.digest("SHA512", "test")
+m = OpenSSL.Digest.digest("MD5", "test")
+OpenSSL.cleanup()
+```
+
+
+# see also
+
+[AES256CBC](https://github.com/HatsuneMiku/AES256CBC.jl)
+
+```julia
+# AES256CBC encrypt/decrypt
+using AES256CBC
+# typealias UBytes Array{UInt8, 1}
+plain = string2bytes("Message") # UBytes
+passwd = string2bytes("Secret Passphrase") # UBytes
+salt = genRandUBytes(8) # UBytes
+(key32, iv16) = genKey32Iv16(passwd, salt) # (UBytes, UBytes)
+encoded = encryptAES256CBC(key32, iv16, plain) # UBytes
+decoded = decryptAES256CBC(key32, iv16, encoded) # UBytes
+```
+
+
+# status
+
+[![Build Status _dev_aes256cbc](https://travis-ci.org/HatsuneMiku/OpenSSL.jl.svg?branch=_dev_aes256cbc)](https://travis-ci.org/HatsuneMiku/OpenSSL.jl)
+
+[![Build Status master](https://travis-ci.org/HatsuneMiku/OpenSSL.jl.svg?branch=master)](https://travis-ci.org/HatsuneMiku/OpenSSL.jl)
diff --git a/REQUIRE b/REQUIRE
index e69de29..69345da 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -0,0 +1 @@
+julia 0.4-
diff --git a/src/OpenSSL.jl b/src/OpenSSL.jl
index 0a3a1cd..c023a41 100644
--- a/src/OpenSSL.jl
+++ b/src/OpenSSL.jl
@@ -1,54 +1,61 @@
+# OpenSSL
+
+VERSION >= v"0.4.0-dev+6521" && __precompile__()
 module OpenSSL
-  import Base
-  
-  const LIBCRYPTO = "libcrypto"
-  
+
+  const LIBCRYPTO = @windows ? "libeay32" : "libcrypto"
+
+  function init()
+    # ccall((:OpenSSL_add_all_digests, OpenSSL.LIBCRYPTO), Void, ())
+    # ccall((:OpenSSL_add_all_ciphers, OpenSSL.LIBCRYPTO), Void, ())
+    # ccall((:OPENSSL_add_all_algorithms_conf, OpenSSL.LIBCRYPTO), Void, ())
+    ccall((:OPENSSL_add_all_algorithms_noconf, OpenSSL.LIBCRYPTO), Void, ())
+    # alias OpenSSL_add_all_algorithms :OPENSSL_add_all_algorithms_noconf
+  end
+
+  function cleanup()
+    ccall((:EVP_cleanup, OpenSSL.LIBCRYPTO), Void, ())
+  end
+
   module Digest
     import OpenSSL
-    import Base.ccall
-    
+
     function init()
       ccall((:OpenSSL_add_all_digests, OpenSSL.LIBCRYPTO), Void, ())
     end
+
     function cleanup()
       ccall((:EVP_cleanup, OpenSSL.LIBCRYPTO), Void, ())
     end
-    
-    function hexstring(hexes::Array{Uint8,1})
-      join([hex(h,2) for h in hexes], "")
-    end
-    
-    function digest(name::String, data::String)
+
+    function digest(name::AbstractString, bs::Array{UInt8,1})
       ctx = ccall((:EVP_MD_CTX_create, OpenSSL.LIBCRYPTO), Ptr{Void}, ())
       try
         # Get the message digest struct
-        md = ccall((:EVP_get_digestbyname, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{Uint8},), bytestring(name))
+        md = ccall((:EVP_get_digestbyname, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{UInt8},), name)
         if(md == C_NULL)
           error("Unknown message digest $name")
         end
         # Add the digest struct to the context
         ccall((:EVP_DigestInit_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Void}, Ptr{Void}), ctx, md, C_NULL)
-        # Update the context with the input data
-        bs = bytestring(data)
-        ccall((:EVP_DigestUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Uint8}, Uint), ctx, bs, length(bs))
+        # Update the context with the input data : bs
+        ccall((:EVP_DigestUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, UInt), ctx, bs, sizeof(bs))
         # Figure out the size of the output string for the digest
-        size = ccall((:EVP_MD_size, OpenSSL.LIBCRYPTO), Uint, (Ptr{Void},), md)
-        uval = Array(Uint8, size)
+        size = ccall((:EVP_MD_size, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void},), md)
+        uval = Array(UInt8, size)
         # Calculate the digest and store it in the uval array
-        ccall((:EVP_DigestFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Uint8}, Ptr{Uint}), ctx, uval, C_NULL)
-        # bytestring(uval)
-        # Convert the uval array to a string of hexes
-        return hexstring(uval)
+        ccall((:EVP_DigestFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ptr{UInt}), ctx, uval, C_NULL)
+        return uval
       finally
         ccall((:EVP_MD_CTX_destroy, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
       end
     end#/digest
 
-    function digestinit(name::String)
+    function digestinit(name::AbstractString)
       ctx = ccall((:EVP_MD_CTX_create, OpenSSL.LIBCRYPTO), Ptr{Void}, ())
       try
         # Get the message digest struct
-        md = ccall((:EVP_get_digestbyname, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{Uint8},), bytestring(name))
+        md = ccall((:EVP_get_digestbyname, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{UInt8},), name)
         if(md == C_NULL)
           error("Unknown message digest $name")
         end
@@ -60,39 +67,147 @@ module OpenSSL
         ccall((:EVP_MD_CTX_destroy, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
         nothing
       end
-    end#/digest
+    end#/digestinit
 
-    function digestupdate(ctx,data::String)
+    function digestupdate(ctx, bs::Array{UInt8,1})
       try
-        # Update the context with the input data
-        bs = bytestring(data)
-        ccall((:EVP_DigestUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Uint8}, Uint), ctx, bs, length(bs))
+        # Update the context with the input data : bs
+        ccall((:EVP_DigestUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, UInt), ctx, bs, sizeof(bs))
         ctx
       catch
         ccall((:EVP_MD_CTX_destroy, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
         nothing
       end
-    end#/digest
-    
+    end#/digestupdate
+
     function digestfinalize(ctx)
       try
         # Get the message digest struct
-        md = ccall((:EVP_MD_CTX_md, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{Uint8},), ctx)
+        md = ccall((:EVP_MD_CTX_md, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{UInt8},), ctx)
         if(md == C_NULL)
           error("Unknown message digest $name")
         end
-        size = ccall((:EVP_MD_size, OpenSSL.LIBCRYPTO), Uint, (Ptr{Void},), md)
-        uval = Array(Uint8, size)
+        size = ccall((:EVP_MD_size, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void},), md)
+        uval = Array(UInt8, size)
         # Calculate the digest and store it in the uval array
-        ccall((:EVP_DigestFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Uint8}, Ptr{Uint}), ctx, uval, C_NULL)
-        # bytestring(uval)
-        # Convert the uval array to a string of hexes
-        return hexstring(uval)
+        ccall((:EVP_DigestFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ptr{UInt}), ctx, uval, C_NULL)
+        return uval
       finally
         ccall((:EVP_MD_CTX_destroy, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
       end
-    end#/digest
+    end#/digestfinalize
 
   end#/Digest
-  
+
+  module Cipher
+    import OpenSSL
+
+    function init()
+      ccall((:OpenSSL_add_all_ciphers, OpenSSL.LIBCRYPTO), Void, ())
+    end
+
+    function cleanup()
+      ccall((:EVP_cleanup, OpenSSL.LIBCRYPTO), Void, ())
+    end
+
+    function get_EVP_CIPHER(name::AbstractString)
+      # ec = ccall((:EVP_get_cipherbyname, OpenSSL.LIBCRYPTO), Ptr{Void}, (Ptr{UInt8},), name)
+      algorithm = "ccall((:EVP_$(name), OpenSSL.LIBCRYPTO), Ptr{Void}, ())"
+      ec = eval(parse(algorithm))
+      # ec = ccall((:EVP_aes_256_cbc, OpenSSL.LIBCRYPTO), Ptr{Void}, ())
+      if(ec == C_NULL)
+        error("Unknown cipher algorithm $name")
+      end
+      return ec
+    end
+
+    function encrypt(name::AbstractString, key::Array{UInt8,1}, iv::Array{UInt8,1}, plain::Array{UInt8,1}, selfpad::Bool=false)
+      ctx = ccall((:EVP_CIPHER_CTX_new, OpenSSL.LIBCRYPTO), Ptr{Void}, ())
+      ccall((:EVP_CIPHER_CTX_init, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+      try
+        ec = get_EVP_CIPHER(name)
+        ccall((:EVP_EncryptInit_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Void}, Ptr{Void}, Ptr{UInt8}, Ptr{UInt8}), ctx, ec, C_NULL, key, iv)
+
+        # :EVP_CIPHER_CTX_block_size must be after :EVP_EncryptInit_ex
+        blksize = ccall((:EVP_CIPHER_CTX_block_size, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void},), ctx)
+        if(selfpad)
+          ccall((:EVP_CIPHER_CTX_set_padding, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void}, UInt), ctx, 0) # disable
+        end
+        remain = sizeof(plain) % blksize
+        padlen = blksize - remain
+        enclen = sizeof(plain) + padlen
+        enc = Array(UInt8, enclen)
+        outlen = UInt(1) # start position = 1
+        tmpenc = Array(UInt8, blksize)
+        tmplen = Ref{Cint}(0)
+
+        for i in 1:div(sizeof(plain), blksize)
+          ccall((:EVP_EncryptUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ref{Cint}, Ptr{UInt8}, UInt), ctx, tmpenc, tmplen, plain[outlen:outlen+blksize-1], blksize)
+          if(tmplen[] > 0) enc[outlen:outlen+blksize-1] = tmpenc[1:blksize] end
+          outlen += tmplen[]
+        end
+
+        if(remain > 0)
+          ccall((:EVP_EncryptUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ref{Cint}, Ptr{UInt8}, UInt), ctx, tmpenc, tmplen, plain[outlen:outlen+remain-1], remain)
+          if(tmplen[] > 0) enc[outlen:outlen+remain-1] = tmpenc[1:remain] end
+          outlen += tmplen[]
+        end
+
+        if(selfpad && padlen != 0) # no use (padlen > 0), UInt is everytime > 0
+          # skip
+          # outlen += tmplen[]
+        end
+
+        if(!selfpad)
+          ccall((:EVP_EncryptFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ref{Cint}), ctx, tmpenc, tmplen)
+          if(tmplen[] > 0) enc[outlen:outlen+blksize-1] = tmpenc[1:blksize] end
+          outlen += tmplen[]
+        end
+
+        ccall((:EVP_CIPHER_CTX_cleanup, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+        return enc
+      finally
+        ccall((:EVP_CIPHER_CTX_free, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+      end
+    end#/encrypt
+
+    function decrypt(name::AbstractString, key::Array{UInt8,1}, iv::Array{UInt8,1}, cipher::Array{UInt8,1}, selfpad::Bool=false)
+      ctx = ccall((:EVP_CIPHER_CTX_new, OpenSSL.LIBCRYPTO), Ptr{Void}, ())
+      ccall((:EVP_CIPHER_CTX_init, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+      try
+        ec = get_EVP_CIPHER(name)
+        ccall((:EVP_DecryptInit_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{Void}, Ptr{Void}, Ptr{UInt8}, Ptr{UInt8}), ctx, ec, C_NULL, key, iv)
+
+        # :EVP_CIPHER_CTX_block_size must be after :EVP_DecryptInit_ex
+        blksize = ccall((:EVP_CIPHER_CTX_block_size, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void},), ctx)
+        if(selfpad)
+          ccall((:EVP_CIPHER_CTX_set_padding, OpenSSL.LIBCRYPTO), UInt, (Ptr{Void}, UInt), ctx, 0) # disable
+        end
+        declen = sizeof(cipher) # trim padlen later
+        dec = Array(UInt8, declen)
+        outlen = UInt(1) # start position = 1
+        tmpdec = Array(UInt8, blksize)
+        tmplen = Ref{Cint}(0)
+
+        for i in 1:div(sizeof(cipher), blksize)
+          ccall((:EVP_DecryptUpdate, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ref{Cint}, Ptr{UInt8}, UInt), ctx, tmpdec, tmplen, cipher[outlen:outlen+blksize-1], blksize)
+          if(tmplen[] > 0) dec[outlen:outlen+blksize-1] = tmpdec[1:blksize] end
+          outlen += tmplen[]
+        end
+
+        if(!selfpad)
+          ccall((:EVP_DecryptFinal_ex, OpenSSL.LIBCRYPTO), Void, (Ptr{Void}, Ptr{UInt8}, Ref{Cint}), ctx, tmpdec, tmplen)
+          if(tmplen[] > 0) dec[outlen:outlen+blksize-1] = tmpdec[1:blksize] end
+          outlen += tmplen[]
+        end
+
+        ccall((:EVP_CIPHER_CTX_cleanup, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+        return selfpad ? dec[1:declen-dec[declen]] : dec[1:outlen-1]
+      finally
+        ccall((:EVP_CIPHER_CTX_free, OpenSSL.LIBCRYPTO), Void, (Ptr{Void},), ctx)
+      end
+    end#/decrypt
+
+  end#/Cipher
+
 end#/OpenSSL
diff --git a/test/data.jl b/test/data.jl
index f5b1036..b2f2390 100644
--- a/test/data.jl
+++ b/test/data.jl
@@ -1,2 +1,5 @@
-sha512_of_test = "ee26b0dd4af7e749aa1a8ee3c10ae9923f618980772e473f8819a5d4940e0db27ac185f8a0e1d5f84f88bc887fd67b143732c304cc5fa9ad8e6f57f50028a8ff"
-md5_of_test = "098f6bcd4621d373cade4e832627b4f6"
+sha512_of_test = hex2bytes("ee26b0dd4af7e749aa1a8ee3c10ae9923f618980772e473f8819a5d4940e0db27ac185f8a0e1d5f84f88bc887fd67b143732c304cc5fa9ad8e6f57f50028a8ff")
+md5_of_test = hex2bytes("098f6bcd4621d373cade4e832627b4f6")
+md5_of_bytes = hex2bytes("e299ff9d8e4831f07e5323913c53e5f0")
+aes256cbc_of_shortdata = hex2bytes("da8aab1b904205a7e49c1ecc7118a8f4")
+aes256cbc_of_longdata = hex2bytes("da8aab1b904205a7e49c1ecc7118a8f4804bef7be79216196739de7845da182d")
diff --git a/test/runtests.jl b/test/runtests.jl
new file mode 100644
index 0000000..06f888c
--- /dev/null
+++ b/test/runtests.jl
@@ -0,0 +1,4 @@
+using OpenSSL
+using Base.Test
+
+include("test.jl")
diff --git a/test/test.jl b/test/test.jl
index 89f4342..d385421 100644
--- a/test/test.jl
+++ b/test/test.jl
@@ -1,12 +1,52 @@
-require("OpenSSL")
+import OpenSSL
+using Base.Test
 
 include("data.jl")
 
-assert(isdefined(:OpenSSL))
-OpenSSL.Digest.init()
+@test isdefined(:OpenSSL) == true
+OpenSSL.init()
 
-assert(OpenSSL.Digest.digest("SHA512", "test") == sha512_of_test)
-assert(OpenSSL.Digest.digest("MD5", "test") == md5_of_test)
+s = OpenSSL.Digest.digest("SHA512", "test".data)
+println(s)
+@test s == sha512_of_test
 
-OpenSSL.Digest.cleanup()
+m = OpenSSL.Digest.digest("MD5", "test".data)
+println(m)
+@test m == md5_of_test
+
+h = OpenSSL.Digest.digest("MD5",
+  hex2bytes("5365637265742050617373706872617365a3e550e89e70996c"))
+println(h)
+@test h == md5_of_bytes
+
+key32 = hex2bytes("e299ff9d8e4831f07e5323913c53e5f0"*
+                  "fec3a040a211d6562fa47607244d0051")
+iv16 = hex2bytes("7c7ed9434ddb9c2d1e1fcc38b4bf4667")
+
+### selfpad=true
+#plainshort = "Message\t\t\t\t\t\t\t\t\t".data
+#plainlong = "Message\t\t\t\t\t\t\t\t\t"*
+#  "\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10\x10".data
+
+### selfpad=false
+plainshort = "Message".data
+plainlong = "Message\t\t\t\t\t\t\t\t\t".data
+
+es = OpenSSL.Cipher.encrypt("aes_256_cbc", key32, iv16, plainshort)
+println(es)
+@test es == aes256cbc_of_shortdata
+
+ds = OpenSSL.Cipher.decrypt("aes_256_cbc", key32, iv16, es)
+println(ds)
+@test ds == plainshort
+
+el = OpenSSL.Cipher.encrypt("aes_256_cbc", key32, iv16, plainlong)
+println(el)
+@test el == aes256cbc_of_longdata
+
+dl = OpenSSL.Cipher.decrypt("aes_256_cbc", key32, iv16, el)
+println(dl)
+@test dl == plainlong
+
+OpenSSL.cleanup()
 println("All tests passed")