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TextCrypt : Overview
Current version: 1.0, released 15 August 2001.
TextCrypt is able to encrypt and decrypt text data. To achieve a high level of security, the tag uses the RSA public key encryption algorithm. Public key encryption is the method by which information can be encrypted using a particular public key. The same key is however not able to decrypt the information. To decrypt the information the private key is needed. The public and private keys are created as pairs, with each public key having a corresponding private key.
RSA is the most popular public key algorithm, and has withstood many years of detailed cryptanalysis and is accepted as secure. For secure applications, key lengths of 1024 bits are a currently acceptable compromise between security and computational speed.
Before using this tag, make sure you are familiar with the concept of public
key encryption. Not understanding how the system works could cause your
data to be insecure.