| Date | User | Challenge | Score |
| gittyasois | Modular Exponentiation | 10 | |
| archex | Efficient Exchange | 50 | |
| cryptoRiO | No Random, No Bias | 120 | |
| bobiealice | Resisting Bruteforce | 10 | |
| bobiealice | Keyed Permutations | 5 | |
| ds0xxd3r | Quadratic Residues | 25 | |
| Meri | Hex | 5 | |
| Antonio_margaret | Greatest Common Divisor | 15 | |
| ds0xxd3r | Modular Inverting | 25 | |
| moritzraho | Adrien's Signs | 80 | |
| ds0xxd3r | Modular Arithmetic 2 | 20 | |
| andrearacc | You either know, XOR you don't | 30 | |
| andrearacc | Favourite byte | 20 | |
| andrearacc | XOR Properties | 15 | |
| andrearacc | XOR Starter | 10 | |
| liangmeigang | Elliptic Nodes | 150 | |
| andrearacc | Bytes and Big Integers | 10 | |
| rad0xus | Chinese Remainder Theorem | 40 | |
| V444 | ASCII | 5 | |
| V444 | Great Snakes | 3 | |
| nighty_night | Encoding Challenge | 40 | |
| JoeBiden | Modular Inverting | 25 | |
| hassan_kulu | Export-grade | 100 | |
| rad0xus | Modular Square Root | 35 | |
| hassan_kulu | Parameter Injection | 60 | |
| andrearacc | Base64 | 10 | |
| hassan_kulu | Deriving Symmetric Keys | 40 | |
| hassan_kulu | Computing Shared Secrets | 30 | |
| hassan_kulu | Computing Public Values | 25 | |
| hassan_kulu | Generators of Groups | 20 | |
| andrearacc | Hex | 5 | |
| NioZow | The j-invariant | 20 | |
| hassan_kulu | Working with Fields | 10 | |
| Light_mellow | Base64 | 10 | |
| hassan_kulu | Modulus Inutilis | 50 | |
| andrearacc | ASCII | 5 | |
| nighty_night | Bytes and Big Integers | 10 | |
| hassan_kulu | Salty | 20 | |
| hassan_kulu | Manyprime | 40 | |
| ds0xxd3r | Modular Arithmetic 1 | 20 | |
| hassan_kulu | Monoprime | 30 | |
| hassan_kulu | Factoring | 15 | |
| Light_mellow | Hex | 5 | |
| f1023n | Modular Arithmetic 1 | 20 | |
| hassan_kulu | RSA Signatures | 25 | |
| andrearacc | Great Snakes | 3 | |
| hassan_kulu | RSA Decryption | 20 | |
| hassan_kulu | Private Keys | 20 | |
| Light_mellow | ASCII | 5 | |
| rad0xus | Legendre Symbol | 35 |
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