Description

This sample demonstrates how to digitally sign a file or a block of memory data using the RSA signing methods.

Project path

Project path: SAMPLES\VISUAL C++ 6-7\RSASIGN

Project file name: RSASIGN.DSP

Demonstrates

Properties: Signature, PrivateKey and SigningMethod

Methods: SetRandomKeyPair, ReadFile and Sign

How to use

This sample is a console application that can perform two operations: 

1. Generate a new key pair 

This operation needs exactly three parameters. The sample's command-line usage specifications are: 

RSASign /g=key_size private_key_file public_key_file 

where key_size is the key pair strength in bits (e.g., 1024)

private_key_file is the file name where will be stored the generated private key public_key_file is the file name where will be stored the generated public key 

2. Sign a file 

This operation needs at least two parameters. The sample's command-line usage specifications are: 

RSASign [/h | /?] [input_file] private_key_file signature_file 

where the options /h or /? are used to show help about this sample program

input_file is the file to sign;

private_key_file is the file containing the private key that will be used to sign;

signature_file is the signature destination file. 

The parameters between brackets are optional. If the input file name is omitted, the text to sign is read from the console.