Scrypt is defined as an encryption method. Many cryptocurrencies use a simplified version of Scrypt in PoW. Specialized ASIC miners can face more complication in mining with Scrypt. While Central Processing Unit (CPU) and Graphics Processing Unit (GPU) miners will mine easily with Scrypt algorithm.
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The pronunciation of Scrypt is “ess crypt”. Scrypt is actually a password-based KDF. The full form of KDF is Key Derivation Function. Obtaining one or more secret keys from a secret value with the help of a pseudorandom function is a purpose of KDF. The secret value can be a master key, a password, or a passphrase. The pseudorandom function is defined as a function which is indistinguishable from a random function.
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Colin Percival is the founder of an online backup service called Tarsnap invented Scrypt for Tarsnap at first. Colin Percival invented Scrypt so that the online backup service Tarsnap could be cryptoprotected. Scrypt was invented in the form of a cryptoprotection. Keeping the backup copies of UNIX-like OS was one more purpose behind the invention of Scrypt. An open standards organization called Internet Engineering Task Force (IETF) published Scrypt as RFC 7914- The scrypt password-based key derivation function (KDF) in 2016.
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Creating artificial difficulties in selecting options to solve a cryptographic task is a purpose of Scrypt. The difficulties will be created by filling with randomly generated numbers called noises. The work time will be increased in results.
In Scrypt, there is a chance that the delay can be almost invisible due to the checking of the key of a user. When a hacker uses an exhaustive search method to damage the core, then difficulties will be created. This operation will take huge time.