HsCipherSDK C Encryption Library (AES,DES,ARC4,CAST128,Blowfish,Twofish,MD5,SHA-1,SHA-256) encryption component

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HsCipherSDK Encryption Library

HsCipherSDK FAQ

PRICES AND ORDERING:

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what is included in HsCipherSDK?

HsCipherSDKdll.dll - standard DLL module for use from C / C++
HsCipherSDKvb.dll - standard DLL module for use from Visual Basic applications
HsCipherSDKax.dll - ActiveX (COM) dll for use from C / C++, Visual Basic or other languages supporting ActiveX.
HsCipherSDKdllcs.dll - C Sharp dll wrapper for use from C Sharp applications.
HsCipherSDK.hlp - Windows documentation file (this file)
HsCipherSDKmanual.pdf - User Manual in PDF format
HsCipherSDK_TestAXvb - Visual Basic test application with source code using ActiveX HsCipherSDKax.dll
HsCipherSDK_TestAXvc - Visual C test application with source code using ActiveX HsCipherSDKax.dll
HsCipherSDK_TestVC - Visual C test application with source code using standard DLL HsCipherSDKdll.dll
HsCipherSDK_TestVB - Visual Basic test application with source code using standard DLL HsCipherSDKvb.dll
HsCipherSDK_DemoCS - C Sharp test application with source code using C Sharp DLL wrapper HsCipherSDKdllcs.dll
FULL SOURCE CODE in C (plain C style), including all core cryptographic libraries

limitations
in evaluation version:

There are several limitation in the evaluation version of HsCipherSDK library, which are removed from the full version:

Every time evaluation version of HsCipherSDK library is loaded it displays a reminder message (nag screen), which requires a user to click Okay to continue.

Evaluation version has a built it time limit. After evaluation period expires, the library will fail to load and will only display the corresponding message

No source code is supplied with free evaluation version. The full source code is supplied when you purchase HsCipehrSDK

RELEASE HISTORY

▪ November 2006, v1.0 - Initial first release

▪ December 2008, v1.1 - Added support for SHA-256

▪ October 2009, v1.2 - Added C Sharp interface

API SUMMARY

▪ HsCipherGetErrorStr
▪ HsCipherHexBuf2Bin
▪ HsCipherBufBin2Hex
▪ HsCipherBufferEncrypt
▪ HsCipherBufferDecrypt
▪ HsCipherFileEncrypt
▪ HsCipherFileDecrypt
▪ HsCipherBufferHashInit
▪ HsCipherHashNextBlock
▪ HsCipherHashGetResult
▪ HsCipherHashFullBuffer
▪ HsCipherHashFile

overview: HsCipherSDK is an Encryption Library providing an API to a suite of symmetric key cryptographic algorithms and one way hash digital signature algorithms. The library includes the following block and stream cipher modules:

AES (Advanced Encryption Standard) - FIPS 197
DES and Triple DES (Data Encryption Standard) - FIPS-46-1, FIPS-46-3
ARC4 (Alleged RC4) CAST-128 (a.k.a CAST5) - RFC 2144
Blowfish algorithm
Twofish algorithm
MD5 message digest algorithm - RFC 1321
SHA-1 (Secure Hash Algorithm) - RFC 3174
SHA-256 (Secure Hash Algorithm) - FIPS 180-2

HsCipherSDK includes a standard DLL for use from C / C++, standard DLL for use from Visual Basic, C Sharp DLL wrapper for use from C Sharp and ActiveX DLL (COM object) for use from Visual C, Visual Basic or any other language supporting activeX. HsCipherSDK itself is fully written in C (ANSI C style) and the source code is included when you purchase HsCipherSDK Source Code License.

HsCipherSDK allows the calling user application to perform the following operations:

Encrypt and decrypt memory buffers with selected algorithm and key
Encrypt and decrypt disk files with selected algorithm and key
Digitally sign buffers using one of selected hashing algorithms
Digitally sign disk files using one of selected hashing algorithms

HsCipherSDK Architecture

Example Invocation (using ActiveX DLL) from Visual C

#include "HsCipherRc.h"
#include "HsCipherAlg.h"
#import "HsCipherObj.dll"

      CoInitialize(NULL);
      HsCipherLib::IHsCipherPtr pCryptoSdk;
    pCryptoSdk.CreateInstance("HsCipherSDK.Cryptolib");
      pCryptoSdk->BufferEncrypt(HS_ALG_AES, TRUE, (long)key, 128, (long)pt, (long)ciphertext, 16, &outlen, &rc);

Example Invocation (using ActiveX DLL) from Visual Basic

Rem From Visual Basic go to Project menu -> references -> browse and add HsCipherSDKax.dll
Dim iHsCipher As HsCipherLib.iHsCipher

Set iHsCipher = CreateObject("HsCipherSDK.Cryptolib")
iHsCipher.BufferEncrypt HS_ALG_AES, 1, VarPtr(key(1)), 128, _
VarPtr(plaintext1(1)), VarPtr(ciphertext(1)), 16, outbuf_len, rc

Example Invocation (using Standard DLL) from Visual C

#include "HsCipherSDK.h"
#include "HsCipherRc.h"
#include "HsCipherAlg.h"

HINSTANCE hinstLib;
BufferEncryptFn BufferEncrypt;

hinstLib = LoadLibrary("HsCipherSDKdll.dll");

BufferEncrypt = (BufferEncryptFn) GetProcAddress(hinstLib, "HsCipherBufferEncrypt");

rc = BufferEncrypt(HS_ALG_AES, TRUE, key, keylen, srcbuf, destbuf, buflen, &outbuf_len);

FreeLibrary(hinstLib);

Example Invocation (using Standard DLL) from Visual Basic

Public Const HS_ALG_AES As Long = 0

Declare Function HsCipherBufferEncrypt Lib "HsCipherSDKvb.dll" _
     (ByVal algorithm As Long, _
     ByVal set_key As Long, _
     ByRef key As Any, _
     ByVal keysize_bits As Long, _
     ByRef inbuf As Any, _
    ByRef outbuf As Any, _
     ByVal inbuf_len As Long, _
     ByRef outbuf_len As Any _
) As Long

HsCipherBufferEncrypt HS_ALG_AES, 1, ByVal VarPtr(key(1)), 128, _
ByVal VarPtr(plaintext1(1)), ByVal VarPtr(ciphertext(1)), 16, ByVal VarPtr(outbuf_len)

Example Invocation (using C Sharp Wrapper DLL) from C Sharp

int rc = 0;
int outbuf_len = 0;
StringBuilder hex_src = new StringBuilder(textBoxInbuf.Text);
byte[] bin_src = new byte[256];

StringBuilder hex_key = new StringBuilder(textBoxKey.Text);
byte[] bin_key = new byte[256];

byte[] outbuf = new byte[256];
StringBuilder outbuf_hex = new StringBuilder(256);

String errorString;
int i;

// convert source buffer from hex ascii into binary buffer
rc = HsCipher.HsCipherHexBuf2Bin(hex_src, bin_src, hex_src.Length);
if (rc == 0)
{
        System.Windows.Forms.MessageBox.Show("Conversion of src buffer from hex to bin array failed");
        return;
}

// convert key from hex ascii string into binary buffer
rc = HsCipher.HsCipherHexBuf2Bin(hex_key, bin_key, hex_key.Length);

rc = HsCipher.HsCipherBufferEncrypt(
           comboBoxBufAlg.SelectedIndex, // algorithm id
           1,                                        // set key
           bin_key,
           ((hex_key.Length / 2) * 8),      // key size in bits
           bin_src,                                // source buffer
           outbuf,                                 // output buffer
           (hex_src.Length / 2),              // length of source buffer
           ref outbuf_len);                     // length of output buffer

if (rc != HS_CIPHER_RC_OK)
{
          errorString = String.Format("HsCipherBufferEncrypt failed, RC = 0x{0:x2}", rc);
          System.Windows.Forms.MessageBox.Show(errorString);
          return;
}

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