Signing and Verifying Messages

To apply a digital signature to a piece of data, a secure hash function is used to build a digest of the data (for example, a 160-bit hash value) which is then transformed with the private key of the signer. Other users can then check the authenticity of the signature by reconstructing the hash value, and checking it against the "inverse" of the digital signature data. CryptoAPI abstracts out the actual method of doing the signature, so that applications need not be aware of the signature mechanics.

Software for developers

Delphi Components
.Net Components
Software for Android Developers

More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples

Databases for Amazon shops developers

Amazon Categories Database
Browse Nodes Database