CryptoSys Encode

Use the CryptoSys Encode functions to encode binary data into base64 encoded strings. This utility is extremely fast, able to encode or decode millions of characters per second (8 Megabytes per second on a 1 GHz PIII machine). It also converts binary strings into hexadecimal strings and vice versa. There is a CRC-32 checksum utility, too.

Examples | Function List | Manual | Download

Stop Press 26 July 2006: This product is now provided free of charge. See the download details below.

There are functions in CryptoSys Encode for both Visual Basic users and C/C++ programmers (new in version 2). The VB functions automatically allocate the required memory for the String and Arrays used.

Examples

    Dim sInput As String
    Dim sOutput As String
    
    ' Put some binary data in a string
    ' this creates the 8-byte string 0xFEDCBA9876543210
    sInput = Chr(&HFE) & Chr(&HDC) & Chr(&HBA) & Chr(&H98) & _
    	Chr(&H76) & Chr(&H54) & Chr(&H32) & Chr(&H10)
    sOutput = B64_Encode(sInput)
    
    Debug.Print sOutput

This should result in output as follows:

/ty6mHZUMhA=

We can use a CryptoSys Encode HEX conversion function to create the binary data

    Dim sInput As String
    Dim sOutput As String
    
    sInput = HEX_Decode("FEDCBA9876543210")
    sOutput = B64_Encode(sInput)
    
    Debug.Print sOutput

And do some decoding back from base64 to a string of binary values

    Dim sInput As String
    Dim sOutput As String
    
    ' Get a base64 string
    sInput = "/ty6mHZUMhA="
    sOutput = B64_Decode(sInput)
    
    Debug.Print HEX_Encode(soutput)

This will produce the output of binary characters in hex

FEDCBA9876543210

To use the CRC-32 checksum function

    Dim sInput As String
    Dim sOutput As String
    
    sInput = "123456789"
    sOutput = HEX_CRC32(sInput)
    Debug.Print sOutput

that should produce the result

CBF43926

Obviously these trivial examples are just meant to show the basic mechanics of the functions involved. They'll be useful to you if you have bulk encoding to do - strings in Visual Basic can be up to 2 billion characters long. See the manual for more detailed examples.

Encode and Decode functions available in CryptoSys Encode

Base64

B64_Encode - Encodes a string of binary characters into a base64 string.
B64_Decode - Decodes a base64 encoded string into a string of binary values.
B64_Filter - Filters unwanted characters from a base64 encoded string.
B64_EncodeBytes - Encodes an array of bytes into a base64 string.
B64_DecodeBytes - Decodes a base64 encoded string into Variant Byte array.
B64_DecodeIntoBytes - Decodes a base64 encoded string into an array of Bytes.

Hexadecimal

HEX_Encode - Encodes a string of binary characters into a hexadecimal string.
HEX_Decode - Decodes a string of hexadecimal characters into a string of binary values.
HEX_Filter - Filters unwanted characters from a hexadecimal string.
HEX_EncodeBytes - Encodes an array of bytes into a hexadecimal string.
HEX_DecodeBytes - Decodes a hexadecimal string into Variant Byte array.
HEX_DecodeIntoBytes - Decodes a hexadecimal string into an array of Bytes.

CRC-32 checksum

HEX_CRC32 - Create a hexadecimal CRC-32 checksum from a string of binary values.

Manual

Read the latest version of the full manual in html format.

Download

As of 26 July 2006, CryptoSys Encode is available free of charge. You can download the latest version here. The latest version of the licenced product is release 2.0.1.0. There is no support provided for this free product.

This page last updated: 26 July 2006