Crypto4 PKI can be installed on any Windows system running Windows 98, Windows ME, Windows 2000, Windows XP or Windows 2003 Server. To install Crypto4 PKI just run c4pki.exe. You will be prompted for destination directory and then Crypto4 PK

Symmetric Key Cryptography-use of Microsoft s CryptoAPI to implement challenge response for Entity Authentication via Symmetric Key Cryptography