| Date | User | Challenge | Score |
| ntnuw | Curves and Logs | 40 | |
| ntnuw | Scalar Multiplication | 35 | |
| ntnuw | Point Addition | 30 | |
| ntnuw | Point Negation | 10 | |
| chiendx30 | Favourite byte | 20 | |
| cryptoanon | Everything is Still Big | 100 | |
| ntnuw | Background Reading | 5 | |
| ntnuw | WOTS Up 2 | 90 | |
| chiendx30 | XOR Properties | 15 | |
| G4Z4N0V4 | XOR Starter | 10 | |
| ntnuw | WOTS Up | 75 | |
| CYDF1121 | Unencryptable | 125 | |
| sociopath | Chinese Remainder Theorem | 40 | |
| ntnuw | Merkle Trees | 25 | |
| OrestisL | Bytes and Big Integers | 10 | |
| chiendx30 | XOR Starter | 10 | |
| rogeer9 | Finding Flags | 2 | |
| fre_kiros | Hex | 5 | |
| ntnuw | Collider | 50 | |
| ntnuw | Jack's Birthday Confusion | 30 | |
| chiendx30 | Bytes and Big Integers | 10 | |
| ntnuw | Jack's Birthday Hash | 20 | |
| 0xRahho | Hex | 5 | |
| Destruction988 | Everything is Still Big | 100 | |
| ntnuw | The Matrix | 75 | |
| chiendx30 | Base64 | 10 | |
| chiendx30 | Hex | 5 | |
| chiendx30 | ASCII | 5 | |
| ntnuw | Script Kiddie | 70 | |
| chiendx30 | Great Snakes | 3 | |
| chiendx30 | Finding Flags | 2 | |
| ntnuw | Deriving Symmetric Keys | 40 | |
| ntnuw | Computing Shared Secrets | 30 | |
| ntnuw | Computing Public Values | 25 | |
| AdamEtyang | You either know, XOR you don't | 30 | |
| AdamEtyang | Favourite byte | 20 | |
| ntnuw | Generators of Groups | 20 | |
| ntnuw | Working with Fields | 10 | |
| AdamEtyang | XOR Properties | 15 | |
| 0xRahho | ASCII | 5 | |
| ntnuw | Real Eisenstein | 150 | |
| AdamEtyang | XOR Starter | 10 | |
| OrestisL | Base64 | 10 | |
| AdamEtyang | Bytes and Big Integers | 10 | |
| OrestisL | Hex | 5 | |
| 0xRahho | Great Snakes | 3 | |
| AdamEtyang | Base64 | 10 | |
| fre_kiros | ASCII | 5 | |
| cryptoanon | Crossed Wires | 100 | |
| AdamEtyang | Hex | 5 |
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