For Training Resources See:

Cryptography Introduction

Do Mention PrivacyCrypt in Correspondence

The Hash Toolkit

Hash algorithms are fundament to many cryptographic applications. Although widely associated with digital signature technology, the hash algorithm has a range of other uses. SHA-1 and MD5 are amongst the most widely known, trusted and used. When utilised with a password (the HMAC version), the potential uses of these algorithms extends further.

The Secure Hash Algorithm Directory  is intended to serve as a start point for your hash algorithmic needs. It presents information, resources, API implementations of the algorithms themselves, and even the acclaimed Hash Calculator.

Whether you are entirely new to the topic, or whether you are a seasoned cryptographic practitioner, you should hopefully find something of value.

RSA and DES Cryptography Toolkits. A Cryptography Introduction.
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