SHA-256 produces a fixed 256-bit output from an input of any size, and Bitcoin applies it twice to block data. Ethereum chose ...

The Git source-code management system is famously built on the SHA‑1 hashing algorithm, which has become an increasingly weak foundation over the years. SHA‑1 is now considered to be broken and, ...

Hashing is a one-way cryptographic function while encryption is designed to work both ways. Encryption algorithms take input and a secret key and generate a random looking output called a ciphertext.

Anyone with an interest in bitcoin will have heard the phrase 'cryptographic hash function' at some time or other. But what exactly does it mean, and how is it connected to cryptocurrency? Hash ...

ASHBURN, Va. – Cryptography forms the foundation of many aspects of trusted computing. This article considers recent algorithms and cryptographic attacks, as well as some future directions for ...

The National Institute of Standards and Technology published the final version of its "Secure Hash Algorithm-3" standard in August 2015 and has released it to the public, calling it a "next-generation ...

An algorithm that transforms a given amount of data (the "message") into a fixed number of digits, known as the "hash," "digest" or "digital fingerprint." Hash functions are a fundamental component in ...

Many organizations have been replacing the MD5 hash algorithm with the SHA-1 hash function, but can the MD5 hash algorithm still be used securely? MD5 (Message-Digest algorithm 5) is a cryptographic ...

Security researchers have achieved the first real-world collision attack against the SHA-1 hash function, producing two different PDF files with the same SHA-1 signature. This shows that the algorithm ...