| Date | User | Challenge | Score |
| alcea | Public Keys | 15 | |
| alcea | Modular Exponentiation | 10 | |
| DANHPHUC | Hex | 5 | |
| Hac45 | XOR Starter | 10 | |
| nurminen | Collider | 50 | |
| nurminen | Hash Stuffing | 50 | |
| Hac45 | Bytes and Big Integers | 10 | |
| nurminen | An Evil Twisted Mind | 175 | |
| Hac45 | Base64 | 10 | |
| kien | Salty | 20 | |
| ngynmq | Deriving Symmetric Keys | 40 | |
| nurminen | Real Curve Crypto | 200 | |
| bbaoaanh | RSA Decryption | 20 | |
| valenv0025 | XOR Starter | 10 | |
| bbaoaanh | Private Keys | 20 | |
| user99 | Transparency | 50 | |
| bbaoaanh | Euler's Totient | 20 | |
| valenv0025 | Bytes and Big Integers | 10 | |
| bbaoaanh | Public Keys | 15 | |
| bbaoaanh | Modular Exponentiation | 10 | |
| ngynmq | Computing Shared Secrets | 30 | |
| Arriccio | Generators of Groups | 20 | |
| nml | ASCII | 5 | |
| hackerpj12 | Efficient Exchange | 50 | |
| user99 | SSH Keys | 35 | |
| hackerpj12 | Curves and Logs | 40 | |
| user99 | CERTainly not | 30 | |
| valenv0025 | Base64 | 10 | |
| Cookie2612 | Infinite Descent | 50 | |
| valenv0025 | Hex | 5 | |
| user99 | Privacy-Enhanced Mail? | 25 | |
| valenv0025 | ASCII | 5 | |
| hackerpj12 | Scalar Multiplication | 35 | |
| valenv0025 | Great Snakes | 3 | |
| valenv0025 | Finding Flags | 2 | |
| hackerpj12 | Point Addition | 30 | |
| abraxii | Parameter Injection | 60 | |
| janky | Parameter Injection | 60 | |
| darkun | Favourite byte | 20 | |
| hackerpj12 | Point Negation | 10 | |
| user99 | Modular Inverting | 25 | |
| user99 | Modular Arithmetic 2 | 20 | |
| janky | Everything is Big | 70 | |
| Cookie2612 | Crossed Wires | 100 | |
| su_lee | Finding Flags | 2 | |
| anonimo123132 | Hex | 5 | |
| hexsociety | Base64 | 10 | |
| hexsociety | Hex | 5 | |
| hexsociety | ASCII | 5 | |
| Arriccio | Working with Fields | 10 |
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