| Date | User | Challenge | Score |
| Bouboudeur | Diffusion through Permutation | 30 | |
| agilghif | Base64 | 10 | |
| Hodeigarmen16 | Finding Flags | 2 | |
| dabrowskaa | Computing Shared Secrets | 30 | |
| juzal | Modulus Inutilis | 50 | |
| agilghif | Hex | 5 | |
| tsirout | Favourite byte | 20 | |
| valentinb | Base64 | 10 | |
| agilghif | ASCII | 5 | |
| s70gun | Favourite byte | 20 | |
| rpadiou | XOR Starter | 10 | |
| agilghif | Great Snakes | 3 | |
| agilghif | Finding Flags | 2 | |
| Shubb | Great Snakes | 3 | |
| juzal | Salty | 20 | |
| Adamah1 | Base64 | 10 | |
| kamilkaminski02 | Jack's Birthday Confusion | 30 | |
| Mathys | Diffusion through Permutation | 30 | |
| zoap420 | Resisting Bruteforce | 10 | |
| tsirout | XOR Properties | 15 | |
| bangaAlderson | Lemur XOR | 40 | |
| kamilkaminski02 | Jack's Birthday Hash | 20 | |
| zoap420 | Keyed Permutations | 5 | |
| Staregai | Jack's Birthday Confusion | 30 | |
| dabrowskaa | Computing Public Values | 25 | |
| rpadiou | Bytes and Big Integers | 10 | |
| TodaylunchRamen | Deriving Symmetric Keys | 40 | |
| Adamah1 | Hex | 5 | |
| Huyyeuthu2104 | Favourite byte | 20 | |
| NataliaP | Resisting Bruteforce | 10 | |
| Adamah1 | ASCII | 5 | |
| Nesh | Finding Flags | 2 | |
| Hardodziobik | Manyprime | 40 | |
| Jex68 | Resisting Bruteforce | 10 | |
| Hardodziobik | Square Eyes | 35 | |
| Hardodziobik | Monoprime | 30 | |
| Hardodziobik | Inferius Prime | 30 | |
| Hardodziobik | Factoring | 15 | |
| toto99ii | Smooth Criminal | 60 | |
| pin | Square Eyes | 35 | |
| bangaAlderson | Encoding Challenge | 40 | |
| ciphermalware | Three Isogenies | 35 | |
| ciphermalware | Two Isogenies | 30 | |
| ciphermalware | Where's the Supersingular Curve | 25 | |
| pin | Inferius Prime | 30 | |
| Shubb | Finding Flags | 2 | |
| ciphermalware | DLOG on the Surface | 40 | |
| ciphermalware | Montgomery Curves | 30 | |
| ciphermalware | Image Point Arithmetic | 30 | |
| NataliaP | Keyed Permutations | 5 |
You are now level Current level