huge SHA lore drop https://link.springer.com/chapter/10.1007/3-540-46035-7_11

SHA-1 [FIP95] designed by NSA and published by NIST was also based on the design of MD4. The round functions of SHA-1 are exactly the same as those of MD4

MD4 being the one even more broken than MD5, from ron rivest "the backdoor guy"

Recently SHA-256 and SHA-512 [FIP01] were proposed to keep up with possible future applications where longer message digests are required. They have almost the same basic components, except that SHA-256 operates on eight 32-bit words, while SHA-512 operates on eight 64-bit words.

LMAO