e-CryptIt Engine - Checksums Xojo Plugin

CRC32 Class

A class to calculate CRC32 checksums. On strings, bytes or streams.

The class supports the following CRC32 variations:
  • GENERIC
  • BZIP2
  • MPEG2
  • POSIX
  • JAMCRC
  • C
  • D
  • Q
  • XFER

    Object
       CRC32

    class CRC32

    Constructors

    CRC32 (console safe) Constructor that takes CRC32MethodEnum selector to choose CRC32 variation.
    CRC32 (console safe) A constructor to create instance of CRC32 with settings for custom variation.

    Properties

    ReferenceInitValue (console safe) A reference starting value for the CRC for the selected CRC variation.

    Methods

    Final (console safe) Gets the final checksum from the CRC.
    shared PluginVersionReturns the version number of the plugin.
    Reset (console safe) Resets the CRC stream.
    Update (console safe) Updates the CRC checksum with a string.
    UpdateByte (console safe) Updates the CRC checksum with a single byte
    UpdateMemoryBlock (console safe) Updates the CRC checksum with a memory block taking all bytes from the block.
    UpdateMemoryBlock (console safe) Updates the CRC checksum with a memory block taking selected bytes from the block.

    Enumerations

    CRC32MethodEnumA enum to supply for the CRC32 constructor to choose CRC132 variation.

    Examples


    Dim crc as CRC32 = new CRC32(CRC32.CRC32MethodEnum.CRC32_GENERIC)
    Dim value32 as UInt32
    Dim testData as String = "123456789"

    testData = testData.ConvertEncoding(Encodings.ASCII)

    value32 = crc.Update(testData, crc.ReferenceInitValue)
    MsgBox Hex(crc.Final(value32))

    Supported Platforms:

  • macOS Intel 64 bit
  • macOS Apple Silicon
  • Windows 32 bit
  • Windows 64 bit
  • Windows ARM 64 bit
  • Linux 32 bit
  • Linux 64 bit
  • Linux ARM 32 bit
  • Linux ARM 64 bit
  • iOS