👉 In cryptography, "rottenstone" refers to a specific type of cryptographic hash function. It is a well-known method used in block ciphers to generate a random output that can be easily verified and authenticated without revealing any plaintext information. Rottenstones are named after their use in the creation of pseudo-random permutations for generating passwords or other types of cryptographic keys, which were commonly used until they were superseded by more secure methods. Rottenstones have been replaced with other cryptographic hash functions in recent