| Date | User | Challenge | Score |
| CalinChis | Passwords as Keys | 50 | |
| CalinChis | Modes of Operation Starter | 15 | |
| Kimvo | Signing Server | 60 | |
| fgs | Unencryptable | 125 | |
| fgs | Cofactor Cofantasy | 150 | |
| fgs | Real Eisenstein | 150 | |
| Kimvo | Null or Never | 100 | |
| CalinChis | Bringing It All Together | 50 | |
| CalinChis | Diffusion through Permutation | 30 | |
| fgs | Prime and Prejudice | 200 | |
| CalinChis | Confusion through Substitution | 25 | |
| Vare | Great Snakes | 3 | |
| CalinChis | Round Keys | 20 | |
| CalinChis | Structure of AES | 15 | |
| CalinChis | Resisting Bruteforce | 10 | |
| Chrolloo | Hex | 5 | |
| zihong_0123 | Base64 | 10 | |
| zahra_kvr | You either know, XOR you don't | 30 | |
| CalinChis | Keyed Permutations | 5 | |
| CalinChis | Modular Binomials | 80 | |
| idoHerojn | XOR Properties | 15 | |
| CalinChis | Adrien's Signs | 80 | |
| Peer | Successive Powers | 60 | |
| bbaoaanh | Ron was Wrong, Whit is Right | 90 | |
| zihong_0123 | Hex | 5 | |
| CalinChis | Chinese Remainder Theorem | 40 | |
| CalinChis | Modular Square Root | 35 | |
| nirvanaK456 | Monoprime | 30 | |
| CalinChis | Legendre Symbol | 35 | |
| CalinChis | Quadratic Residues | 25 | |
| CalinChis | Modular Inverting | 25 | |
| AndreaMiele | Curveball | 100 | |
| CalinChis | Modular Arithmetic 2 | 20 | |
| zihong_0123 | ASCII | 5 | |
| CalinChis | Modular Arithmetic 1 | 20 | |
| CalinChis | Extended GCD | 20 | |
| CalinChis | Greatest Common Divisor | 15 | |
| CalinChis | You either know, XOR you don't | 30 | |
| CalinChis | Favourite byte | 20 | |
| CalinChis | XOR Properties | 15 | |
| shaked_srabstein | RSA Signatures | 25 | |
| CalinChis | XOR Starter | 10 | |
| nirvanaK456 | Factoring | 15 | |
| CalinChis | Bytes and Big Integers | 10 | |
| zihong_0123 | Network Attacks | 5 | |
| CalinChis | Base64 | 10 | |
| sherwynd | The Good, The Pad, The Ugly | 100 | |
| nirvanaK456 | RSA Signatures | 25 | |
| CalinChis | Hex | 5 | |
| Mote | RSA Backdoor Viability | 175 |
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