| Date | User | Challenge | Score |
| 4928trs | Base64 | 10 | |
| bzkz | Privacy-Enhanced Mail? | 25 | |
| Chilnosu | XOR Properties | 15 | |
| alm | Cofactor Cofantasy | 150 | |
| 144 | Finding Flags | 2 | |
| NightBun | Public Keys | 15 | |
| Halexeli | XOR Properties | 15 | |
| kian_mohammadita | Extended GCD | 20 | |
| Noegodo | Modular Square Root | 35 | |
| L_0082 | Base64 | 10 | |
| bzkz | Modular Arithmetic 1 | 20 | |
| Catherinenjoki | Modulus Inutilis | 50 | |
| NightBun | Modular Exponentiation | 10 | |
| 4928trs | Hex | 5 | |
| L_0082 | Hex | 5 | |
| Chilnosu | XOR Starter | 10 | |
| bzkz | Greatest Common Divisor | 15 | |
| Pkv123 | Double and Broken | 50 | |
| Chilnosu | Bytes and Big Integers | 10 | |
| betulaltinsoy | Base64 | 10 | |
| ckrx | XOR Properties | 15 | |
| Pkv123 | Montgomery's Ladder | 40 | |
| Catherinenjoki | Salty | 20 | |
| Pkv123 | Edwards Goes Degenerate | 100 | |
| Noegodo | Legendre Symbol | 35 | |
| xQubit | A Twisted Mind | 80 | |
| bagus51 | RSA vs RNG | 150 | |
| cryto123 | Finding Flags | 2 | |
| Catherinenjoki | Manyprime | 40 | |
| Orena | Greatest Common Divisor | 15 | |
| alm | Ellipse Curve Cryptography | 125 | |
| acastus | Network Attacks | 5 | |
| Pkv123 | ProSign 3 | 100 | |
| dumda | Base64 | 10 | |
| Orena | Finding Flags | 2 | |
| Catherinenjoki | Monoprime | 30 | |
| whoiswhois | Long Story Short | 60 | |
| P4tchw0rk | Extended GCD | 20 | |
| bzkz | Lemur XOR | 40 | |
| turtur | Transparency | 50 | |
| bagus51 | Nothing Up My Sleeve | 150 | |
| Chilnosu | Base64 | 10 | |
| dumda | Hex | 5 | |
| Pkv123 | Curveball | 100 | |
| Pkv123 | Digestive | 60 | |
| acastus | Modular Square Root | 35 | |
| StarBurst1024 | Bit by Bit | 100 | |
| mnfrht | Bytes and Big Integers | 10 | |
| Chilnosu | Hex | 5 | |
| Catherinenjoki | Factoring | 15 |
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