You can’t un-ring a bell, but you might be able to un-hash an email, depending on whom you ask. In order for marketers to safely use hashes for targeted advertising, they must stay abreast of the ...

A target hash in cryptocurrency mining defines the difficulty level of finding a new block in a proof-of-work (PoW) system.

In this chapter we will look at choosing and optimizing cryptographic algorithms, particularly for resource-constrained systems, such as embedded systems. We will look at various strategies for ...

A rainbow table is a large, precomputed table designed to cache the output of cryptographic hash functions to decrypt hashed passwords into plaintext. Rainbow tables were invented by IT expert ...

SHA-1 is one of the most prevalent forms of a secure hash algorithm used in the legal and security industry. Now that Professor Xiaoyun Wang and her associates in Tsinghua University and Shandong ...