QuickHash Library

C++ Interface

CSHA1

CSHA1 class does not have a base class.

CSHA1 class assists you in generating SHA1 message digests.

SHA1 message digests can be generated in two modes: accumulative and non-accumulative.

The accumulative mode is applied when the data for which the digest 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 message digest in the accumulative mode, perform the following:

• Instantiate a CSHA1 object.

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

• Call the Final or call the FinalHex member function to obtain the message digest.

  Note. Call the FinalHex member function when you need to retrieve the hexadecimal string representation of the message digest.

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

• Call the Calculate or the CalculateHex static member function to calculate and retrieve the message digest.

  Note. Call the CalculateHex static member function when you need to retrieve the hexadecimal string representation of the message digest.

Class Members   |   Useful Links   |   HashCalc

Samples   SHA1 message digest generation for a file

               SHA1 message digest generation for a string