| Date | User | Challenge | Score |
| mag121 | Hex | 5 | |
| RainHigh | Bytes and Big Integers | 10 | |
| bu_gye_jeong | Efficient Exchange | 50 | |
| RainHigh | Base64 | 10 | |
| mag121 | ASCII | 5 | |
| hamaj | Passwords as Keys | 50 | |
| RainHigh | Hex | 5 | |
| bu_gye_jeong | Curves and Logs | 40 | |
| RainHigh | ASCII | 5 | |
| RainHigh | Great Snakes | 3 | |
| mag121 | Network Attacks | 5 | |
| ProxyPanda | Structure of AES | 15 | |
| RainHigh | Finding Flags | 2 | |
| jh02 | Legendre Symbol | 35 | |
| bu_gye_jeong | Scalar Multiplication | 35 | |
| mag121 | Great Snakes | 3 | |
| chelinh | Extended GCD | 20 | |
| bu_gye_jeong | Point Addition | 30 | |
| mag121 | Finding Flags | 2 | |
| cyk0sure | No Random, No Bias | 120 | |
| Xela12 | ECB CBC WTF | 55 | |
| Dessert | Mixed Up | 120 | |
| bu_gye_jeong | Point Negation | 10 | |
| RachaelSarah | Export-grade | 100 | |
| RachaelSarah | Parameter Injection | 60 | |
| cyk0sure | Real Curve Crypto | 200 | |
| bu_gye_jeong | Background Reading | 5 | |
| bu_gye_jeong | CTRIME | 70 | |
| Jessiinfinteloop | Round Keys | 20 | |
| ProxyPanda | Resisting Bruteforce | 10 | |
| cyk0sure | An Evil Twisted Mind | 175 | |
| s0jaku | Round Keys | 20 | |
| Baobab | Modes of Operation Starter | 15 | |
| s0jaku | Structure of AES | 15 | |
| Jerry_Mwatika | Export-grade | 100 | |
| Jerry_Mwatika | Parameter Injection | 60 | |
| Jerry_Mwatika | Deriving Symmetric Keys | 40 | |
| Jerry_Mwatika | Computing Shared Secrets | 30 | |
| Xela12 | ECB Oracle | 60 | |
| hhtet | Bytes and Big Integers | 10 | |
| Jerry_Mwatika | Computing Public Values | 25 | |
| Jerry_Mwatika | Generators of Groups | 20 | |
| Jessiinfinteloop | Structure of AES | 15 | |
| s0jaku | Resisting Bruteforce | 10 | |
| g1336 | RSA Signatures | 25 | |
| Dessert | Everything is Still Big | 100 | |
| Jerry_Mwatika | Working with Fields | 10 | |
| Jerry_Mwatika | Modulus Inutilis | 50 | |
| Jerry_Mwatika | Salty | 20 | |
| Jerry_Mwatika | Manyprime | 40 |
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