The respected programmer and cryptographer "Hal Finney" was mentioned on the cryptanalysis portal "CRYPTO DEEP TECH". They wrote very warm and high words about him. The topic of discussion was "Speed up secp256k1 with endomorphism" . This is what "Hal Finney" laid as the foundation for deep research in cryptanalysis. I respect, remember and love him!

https://cryptodeeptech.ru/endomorphism