SHA-0: A retronym applied to the original version of the 160-bit hash function published in 1993 under the name "SHA". It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1.
SHA-1: A 160-bit hash function which resembles the earlier MD5 algorithm. This was designed by the National Security Agency (NSA) to be part of the Digital Signature Algorithm. Cryptographic weaknesses were discovered in SHA-1, and the standard was no longer approved for most cryptographic uses after 2010.
SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They differ in the word size; SHA-256 uses 32-bit words where SHA-512 uses 64-bit words. There are also truncated versions of each standard, known as SHA-224, SHA-384, SHA-512/224 and SHA-512/256. These were also designed by the NSA.
A hash function is any function that can be used to map data of arbitrary size to data of fixed size. The values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes.
One use is a data structure called a hash table, widely used in computer software for rapid data lookup. Hash functions accelerate table or database lookup by detecting duplicated records in a large file. An example is finding similar stretches in DNA sequences. They are also useful in cryptography. A cryptographic hash function allows one to easily verify that some input data maps to a given hash value, but if the input data is unknown, it is deliberately difficult to reconstruct it (or equivalent alternatives) by knowing the stored hash value. This is used for assuring integrity of transmitted data, and is the building block for HMACs, which provide message authentication.
Hash functions are related to (and often confused with) checksums, check digits, fingerprints, randomization functions, error-correcting codes, and ciphers. Although these concepts overlap to some extent, each has its own uses and requirements and is designed and optimized differently. The Hash Keeper database maintained by the American National Drug Intelligence Center, for instance, is more aptly described as a catalogue of file fingerprints than of hash values.
The SHA-256 hash function, integral to Bitcoin mining, currently ensures strong ... In contrast, Pay-to-Public-Key-Hash (P2PKH) addresses provide an additional layer of security by hashing public keys.
For example, the (QRL) employs the eXtended Merkle Signature Scheme (XMSS), a hash-based signature that remains secure even in a quantum computing environment ... provide strong security and efficiency.
Litecoin uses the Scrypt hashing algorithm, which helps prevent mining centralization and keeps the network more secure and decentralized ... As concerns over data security grow, a currency that prioritizes anonymity holds significant appeal.
is enhancing the online gaming and betting landscape by integrating blockchain technology and hash algorithms to create a transparent, secure, and open gaming experience ...Game results on BETY.com are generated using hash algorithms.
...Algorithm (ECDSA) and the SHA-256 hash function ... This algorithm would not break Bitcoin’s security entirely, but it could reduce the effective strength of the hash function from 256 bits to 128 bits.
Yet, these early forays into user authentication were often marred by shockingly lax security standards ...Encryption and hashing algorithms became standard practice, and two-factor authentication emerged as an additional layer of security.
Shor’s and Grover’s algorithms could break the current security of blockchains, affecting private keys, digital signatures, and hash functions ... The cryptographic security of blockchains ...
The Merkle Tree and the SHA-256Algorithm... The Merkle Tree was invented to store data in a secure and efficient manner, while the SHA-256 algorithm is used to create cryptographic hashes that help verify the immutability of blockchain records.
Other tactics include adding support for quantum-resistant algorithms, such as hash-based cryptographic techniques, and allowing flexible account security, including rotating cryptographic keys ... STARKed hash-based binary trees.”.
If your crypto portfolio is worth at least $100, you should care about the security of your assets ...Privacy and Security ... Security ... Security ... Security. IPVanish uses the AES-256-CBC encryption with a SHA256 hash algorithm to encrypt users’ traffic.
Hashing through a strong algorithm makes the Bitcoin blockchain ledger highly secure ...To do this, miners must secure specialized machines with chips capable of efficiently generating potential hash numbers for the specific Bitcoin algorithm, SHA-256.
The library, started in 2006, provides operations and algorithms developers can use to safely implement secure encryption, decryption, signing, verification, hashing, and key exchange in the apps they create.
