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SHA-256 & RIPEMD160: C# [38] dBFT: China based cryptocurrency, formerly ANT Shares and ANT Coins. The names were changed in 2017 to NEO and GAS. 2014 MazaCoin: MZC BTC Oyate Initiative SHA-256d: C++ [39] PoW: The underlying software is derived from that of another cryptocurrency, ZetaCoin. 2014 Monero: XMR Monero Core Team RandomX C++ [40] PoW
Peercoin, also known as Peer-to-Peer Coin, PP Coin, or PPC, is a cryptocurrency utilizing both proof-of-stake and proof-of-work systems. [ 1 ] [ 2 ] It is notable as the first cryptocurrency to implement the proof-of-stake consensus mechanism .
Litecoin was a source code fork of the Bitcoin Core client, originally differing by having a decreased block generation time (2.5 minutes), increased maximum number of coins, different hashing algorithm (scrypt, instead of SHA-256), faster difficulty retarget, and a slightly modified GUI. [citation needed]
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SHA-2 basically consists of two hash algorithms: SHA-256 and SHA-512. SHA-224 is a variant of SHA-256 with different starting values and truncated output. SHA-384 and the lesser-known SHA-512/224 and SHA-512/256 are all variants of SHA-512. SHA-512 is more secure than SHA-256 and is commonly faster than SHA-256 on 64-bit machines such as AMD64.
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. [3] [4] They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher.
Use PBKDF2 to generate the desired number of bytes, but using the expensive salt we just generated return PBKDF2 HMAC-SHA256 (Passphrase, expensiveSalt, 1, DesiredKeyLen); Where PBKDF2(P, S, c, dkLen) notation is defined in RFC 2898, where c is an iteration count.
As of October 2012, CNSSP-15 [4] stated that the 256-bit elliptic curve (specified in FIPS 186-2), SHA-256, and AES with 128-bit keys are sufficient for protecting classified information up to the Secret level, while the 384-bit elliptic curve (specified in FIPS 186-2), SHA-384, and AES with 256-bit keys are necessary for the protection of Top ...