| Date | User | Challenge | Score |
| adriaaan7 | Bean Counter | 60 | |
| kaliveiro | Finding Flags | 2 | |
| dionisiant | Modular Square Root | 35 | |
| adriaaan7 | Symmetry | 50 | |
| AmirWayne | Extended GCD | 20 | |
| g__p | JSON in JSON | 40 | |
| g__p | RSA or HMAC? | 35 | |
| adriaaan7 | Triple DES | 60 | |
| g__p | JWT Secrets | 25 | |
| adriaaan7 | Lazy CBC | 60 | |
| adriaaan7 | Flipping Cookie | 60 | |
| adriaaan7 | ECB Oracle | 60 | |
| g__p | No Way JOSE | 20 | |
| g__p | JWT Sessions | 10 | |
| g__p | Token Appreciation | 5 | |
| ziemniak | Signing Server | 60 | |
| AmirWayne | Greatest Common Divisor | 15 | |
| g__p | No Difference | 175 | |
| NoamN | Resisting Bruteforce | 10 | |
| aig_12 | Let's Decrypt | 80 | |
| marpap19 | Quadratic Residues | 25 | |
| danielmagram | Bean Counter | 60 | |
| adriaaan7 | ECB CBC WTF | 55 | |
| g__p | Find the Lattice | 100 | |
| stavb | Confusion through Substitution | 25 | |
| g__p | Gaussian Reduction | 50 | |
| doctorixx | Gotta Go Fast | 40 | |
| raoul | RSA Decryption | 20 | |
| Gogumilogu | Point Addition | 30 | |
| laye | XOR Properties | 15 | |
| adriaaan7 | Passwords as Keys | 50 | |
| marpap19 | Modular Inverting | 25 | |
| Gogumilogu | Point Negation | 10 | |
| jvr | XOR Starter | 10 | |
| raoul | Private Keys | 20 | |
| mary12555488 | Diffusion through Permutation | 30 | |
| dionisiant | Legendre Symbol | 35 | |
| Mitre | Modular Arithmetic 2 | 20 | |
| sewulas | Decrypting TLS 1.3 | 35 | |
| adriaaan7 | Modes of Operation Starter | 15 | |
| g__p | Backpack Cryptography | 120 | |
| adriaaan7 | Bringing It All Together | 50 | |
| Kreons | Greatest Common Divisor | 15 | |
| ymoe3 | Modular Inverting | 25 | |
| Gogumilogu | RSA Decryption | 20 | |
| Gogumilogu | Private Keys | 20 | |
| Gogumilogu | Public Keys | 15 | |
| dionisiant | Quadratic Residues | 25 | |
| NoamN | Keyed Permutations | 5 | |
| y0dam4n | Manyprime | 40 |
You are now level Current level