| Date | User | Challenge | Score |
| mrmishaal | Finding Flags | 2 | |
| nahida_oowoo | Extended GCD | 20 | |
| HANABI17 | Computing Public Values | 25 | |
| Bearsk | Base64 | 10 | |
| HANABI17 | Generators of Groups | 20 | |
| HANABI17 | Working with Fields | 10 | |
| Bearsk | Hex | 5 | |
| HANABI17 | Modulus Inutilis | 50 | |
| HANABI17 | Salty | 20 | |
| HANABI17 | Manyprime | 40 | |
| Bearsk | ASCII | 5 | |
| Alan233 | RSA Signatures | 25 | |
| HANABI17 | Monoprime | 30 | |
| Bearsk | Great Snakes | 3 | |
| zw1234 | XOR Starter | 10 | |
| HANABI17 | Factoring | 15 | |
| HANABI17 | RSA Signatures | 25 | |
| HANABI17 | RSA Decryption | 20 | |
| HANABI17 | Private Keys | 20 | |
| HANABI17 | Euler's Totient | 20 | |
| HANABI17 | Public Keys | 15 | |
| HANABI17 | Modular Exponentiation | 10 | |
| katkat | Great Snakes | 3 | |
| koromaki88 | Lemur XOR | 40 | |
| m4n059 | Dancing Queen | 120 | |
| Alan233 | RSA Decryption | 20 | |
| Alan233 | Private Keys | 20 | |
| DavidTruong | Let's Decrypt | 80 | |
| zw1234 | Bytes and Big Integers | 10 | |
| Alan233 | Euler's Totient | 20 | |
| Alan233 | Public Keys | 15 | |
| Alan233 | Modular Exponentiation | 10 | |
| katkat | Finding Flags | 2 | |
| Basag0 | Jack's Birthday Hash | 20 | |
| Alan233 | You either know, XOR you don't | 30 | |
| Alan233 | Favourite byte | 20 | |
| Alan233 | XOR Properties | 15 | |
| Basag0 | RSA or HMAC? Part 2 | 100 | |
| Alan233 | XOR Starter | 10 | |
| nahida_oowoo | Greatest Common Divisor | 15 | |
| Alan233 | Bytes and Big Integers | 10 | |
| zw1234 | Base64 | 10 | |
| Alan233 | Base64 | 10 | |
| zw1234 | Hex | 5 | |
| r3xdj | Proofs of Knowledge | 20 | |
| allystarw | Bytes and Big Integers | 10 | |
| Bris_raton | Structure of AES | 15 | |
| allystarw | Base64 | 10 | |
| Bris_raton | Resisting Bruteforce | 10 | |
| Bris_raton | Keyed Permutations | 5 |
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