QuickHash Library

API

CRC16 API Overview

CRC16 API assists you in generating CRC16 checksums.

CRC16 checksums can be generated in two modes: accumulative and non-accumulative.

The accumulative mode is applied when the data for which the checksum is calculated (data) represents one or more continuous memory block(s) or when the data is created at runtime in many steps (for instance, when reading a file).

Non-accumulative mode can be applied when the data represents only one continuous memory block.

Note. When the data represents just one continuous memory block, both methods can be applied.

To generate the checksum in the accumulative mode, perform the following:

• Allocate at least SLC_CRC16_CONTEXTSIZE bytes for the context.

• Call the SL_CRC16_Init function to initialize the context.

• Call the SL_CRC16_Update function for each continuous memory block of data to perform the calculations.

Note. You can use SL_CRC16_UpdateStr function (instead of SL_CRC16_Update function) if the data represents a null-terminated string.

• Call the SL_CRC16_Final or the SL_CRC16_FinalHex function to obtain the checksum.

Note. Call the SL_CRC16_FinalHex function when you need to retrieve the hexadecimal string representation of the checksum.

To generate the checksum in the non-accumulative mode, perform the following:

• Call the SL_CRC16_Calculate or the SL_CRC16_CalculateHex function to calculate and retrieve the checksum.

Note 1. Call the SL_CRC16_CalculateHex function when you need to retrieve the hexadecimal string representation of the checksum.

Note 2. You can use SL_CRC16_CalculateStr and SL_CRC16_CalculateStrHex functions (instead of SL_CRC16_Calculate and SL_CRC16_CalculateHex functions) if the data represents a null-terminated string.

CRC16 API Functions   |   Useful Links   |   HashCalc

Samples   CRC16 checksum generation for a file

               CRC16 checksum generation for a string