ElGamal encryption and EIGamal-based proxy re-encryption

https://asecuritysite.com/elgamal/go_elgamal

https://www.youtube.com/watch?v=DRgeuJl86uY&ab_channel=BillBuchananOBE

https://www.youtube.com/watch?v=Ex9sN5MorRs&ab_channel=DanielRees

https://wenchiching.wordpress.com/2009/11/23/el-gamal-%E5%8A%A0%E5%AF%86%E6%BC%94%E7%AE%97%E6%B3%95%E7%AF%84%E4%BE%8B/

https://www.cs.jhu.edu/~susan/600.641/scribes/lecture17.pdf