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

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HsCipherSDK Encryption Library

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what is included in HsCipherSDK?

HsCipherSDK Standard Edition:
HsCipherSDKdll.dll - standard DLL module for use from Visual C applications
HsCipherSDKvb.dll - standard DLL module for use from Visual Basic applications
HsCipherSDKax.dll - ActiveX (COM) dll for use from Visual C, Visual Basic or other languages supporting ActiveX.
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 Blueprint Edition:

HsCipherSDK Blueprint edition Includes everything in Standard edition plus FULL SOURCE CODE in Visual 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 verion 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 with full version of HsCipherSDK Blueprint edition

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 s standard DLL for use from Visual C, standard DLL for use from Visual Basic and ActiveX DLL (COM object) for use from Visual C, Visual Basic or any other language supporting activeX. HsCipherSDK itself is fully written in Visual C (plain C style) and the source code is included with HsCipherSDK Blueprint edition

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

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)

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