| Date | User | Challenge | Score |
| susanto | Greatest Common Divisor | 15 | |
| susanto | Lemur XOR | 40 | |
| donatsell | Deriving Symmetric Keys | 40 | |
| KA183R | CERTainly not | 30 | |
| hemra | JWT Secrets | 25 | |
| hemra | No Way JOSE | 20 | |
| hemra | JWT Sessions | 10 | |
| donatsell | Computing Shared Secrets | 30 | |
| hemra | Token Appreciation | 5 | |
| susanto | You either know, XOR you don't | 30 | |
| cookie303 | Point Negation | 10 | |
| KA183R | Privacy-Enhanced Mail? | 25 | |
| donatsell | Computing Public Values | 25 | |
| susanto | Favourite byte | 20 | |
| susanto | XOR Properties | 15 | |
| donatsell | Generators of Groups | 20 | |
| susanto | XOR Starter | 10 | |
| susanto | Encoding Challenge | 40 | |
| 0liv3zk_ | Bytes and Big Integers | 10 | |
| yabet98191 | Greatest Common Divisor | 15 | |
| Sahat | You either know, XOR you don't | 30 | |
| Sahat | Favourite byte | 20 | |
| donatsell | Working with Fields | 10 | |
| Sahat | XOR Properties | 15 | |
| Sahat | XOR Starter | 10 | |
| Sahat | Bytes and Big Integers | 10 | |
| yabet98191 | You either know, XOR you don't | 30 | |
| Sahat | Base64 | 10 | |
| donatsell | Modulus Inutilis | 50 | |
| 0liv3zk_ | Base64 | 10 | |
| hakka52 | Ellipse Curve Cryptography | 125 | |
| 07734willy | Point Negation | 10 | |
| susanto | Bytes and Big Integers | 10 | |
| Sahat | Hex | 5 | |
| susanto | Base64 | 10 | |
| Sahat | ASCII | 5 | |
| donatsell | Salty | 20 | |
| susanto | Hex | 5 | |
| susanto | ASCII | 5 | |
| 07734willy | Background Reading | 5 | |
| 0liv3zk_ | Hex | 5 | |
| Ayuwandira | Great Snakes | 3 | |
| henzarafaello | Great Snakes | 3 | |
| 0liv3zk_ | ASCII | 5 | |
| Sahat | Network Attacks | 5 | |
| susanto | Network Attacks | 5 | |
| donatsell | Manyprime | 40 | |
| Ayuwandira | Finding Flags | 2 | |
| henzarafaello | Finding Flags | 2 | |
| ISKANDARLAN | Base64 | 10 |
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