Tags: ecc 

Rating:

tldr;
- Elliptic curve signature scheme (not ECDSA)
- Task is to forge 8 unique signatures
- All values are given, so just use basic algebra to create valid signatures

[writeup](https://www.josephsurin.me/posts/2021-01-31-justctf-2020-crypto-writeups#25519)

Original writeup (https://www.josephsurin.me/posts/2021-01-31-justctf-2020-crypto-writeups#25519).