| Date | User | Challenge | Score |
| Dan1e1B | Confusion through Substitution | 25 | |
| 4Better | Hex | 5 | |
| 1_canhack | Extended GCD | 20 | |
| zsoli | ASCII | 5 | |
| ronnyl | Paper Plane | 120 | |
| isl4r | Modular Binomials | 80 | |
| pacillians | ECB CBC WTF | 55 | |
| dkoazwlearning | Collider | 50 | |
| tup01ris | RSA Decryption | 20 | |
| nhule0235 | Greatest Common Divisor | 15 | |
| Haikall | Greatest Common Divisor | 15 | |
| Dan1e1B | Round Keys | 20 | |
| tup01ris | Private Keys | 20 | |
| tup01ris | Euler's Totient | 20 | |
| tup01ris | Public Keys | 15 | |
| tup01ris | Modular Exponentiation | 10 | |
| zsoli | Great Snakes | 3 | |
| quangntenemy | A Twisted Mind | 80 | |
| 1_canhack | Greatest Common Divisor | 15 | |
| nhule0235 | You either know, XOR you don't | 30 | |
| lid | Script Kiddie | 70 | |
| 4Better | ASCII | 5 | |
| f4hr | Legendre Symbol | 35 | |
| joss | XOR Properties | 15 | |
| Haikall | Network Attacks | 5 | |
| f4hr | Quadratic Residues | 25 | |
| tup01ris | Symmetry | 50 | |
| f4hr | Modular Inverting | 25 | |
| alex_yc | Encoding Challenge | 40 | |
| aliceAndBob | Too Honest | 50 | |
| Blackgreen | ECB CBC WTF | 55 | |
| Sole | RSA Backdoor Viability | 175 | |
| 1_canhack | You either know, XOR you don't | 30 | |
| z8v5nr4d | Paper Plane | 120 | |
| lid | Additive | 70 | |
| Sole | Ron was Wrong, Whit is Right | 90 | |
| Dan1e1B | Structure of AES | 15 | |
| joss | XOR Starter | 10 | |
| aliceAndBob | Honest Verifier Zero Knowledge | 30 | |
| joss | Bytes and Big Integers | 10 | |
| dalida | Great Snakes | 3 | |
| dshivaay_23 | Encoding Challenge | 40 | |
| lid | Ron was Wrong, Whit is Right | 90 | |
| ngawipride67 | Modular Inverting | 25 | |
| CY63Rx31173 | Extended GCD | 20 | |
| SypherZ | Chinese Remainder Theorem | 40 | |
| dshivaay_23 | Bytes and Big Integers | 10 | |
| dshivaay_23 | Base64 | 10 | |
| patawee | Favourite byte | 20 | |
| dshivaay_23 | Hex | 5 |
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