| Date | User | Challenge | Score |
| Akpa2306 | Great Snakes | 3 | |
| Hong5489 | Vectors | 10 | |
| xxhh | Modular Arithmetic 2 | 20 | |
| xxhh | Modular Arithmetic 1 | 20 | |
| afrdian | Bespoke Padding | 100 | |
| xxhh | Extended GCD | 20 | |
| return42 | Lazy CBC | 60 | |
| MahardikaR | Hex | 5 | |
| MahardikaR | ASCII | 5 | |
| MahardikaR | Great Snakes | 3 | |
| MahardikaR | Finding Flags | 2 | |
| xxhh | Greatest Common Divisor | 15 | |
| Mycr0ft | Diffusion through Permutation | 30 | |
| AESpider | Nativity | 60 | |
| yeyiux | Network Attacks | 5 | |
| Mycr0ft | Lo-Hi Card Game | 120 | |
| liyalithefirst | Bytes and Big Integers | 10 | |
| Irregular | Base64 | 10 | |
| Mycr0ft | No Leaks | 100 | |
| Mycr0ft | Confusion through Substitution | 25 | |
| Irregular | Hex | 5 | |
| Irregular | ASCII | 5 | |
| Mycr0ft | OR Proof (CryptoHack) | 0 | |
| dimpar | Bytes and Big Integers | 10 | |
| Irregular | Great Snakes | 3 | |
| Irregular | Finding Flags | 2 | |
| xxhh | You either know, XOR you don't | 30 | |
| Mycr0ft | Round Keys | 20 | |
| liyalithefirst | Base64 | 10 | |
| Aloutrance | Greatest Common Divisor | 15 | |
| xxhh | Favourite byte | 20 | |
| hata | Curves and Logs | 40 | |
| liyalithefirst | Hex | 5 | |
| AESpider | Bounded Noise | 50 | |
| Mounirmuhammad | Base64 | 10 | |
| liyalithefirst | ASCII | 5 | |
| Mycr0ft | Structure of AES | 15 | |
| Mounirmuhammad | Hex | 5 | |
| rootverdict | Finding Flags | 2 | |
| liyalithefirst | Great Snakes | 3 | |
| xxhh | XOR Properties | 15 | |
| hata | Scalar Multiplication | 35 | |
| afrdian | RSA Backdoor Viability | 175 | |
| afrdian | Ron was Wrong, Whit is Right | 90 | |
| haqtor | You either know, XOR you don't | 30 | |
| xxhh | XOR Starter | 10 | |
| hata | Point Addition | 30 | |
| anacin27 | Adrien's Signs | 80 | |
| Jairact | Finding Flags | 2 | |
| xxhh | Bytes and Big Integers | 10 |
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