6 Jun 23 | Hash Functions | Hash Stuffing | 50 |
8 Jun 22 | Crypto on the Web | RSA or HMAC? Part 2 | 100 |
8 Jun 22 | Crypto on the Web | JSON in JSON | 40 |
8 Jun 22 | Crypto on the Web | RSA or HMAC? | 35 |
8 Jun 22 | Crypto on the Web | JWT Secrets | 25 |
8 Jun 22 | Crypto on the Web | JWT Sessions | 10 |
8 Jun 22 | Crypto on the Web | No Way JOSE | 20 |
18 Mar 22 | Diffie-Hellman | Computing Shared Secrets | 30 |
18 Mar 22 | Diffie-Hellman | Computing Public Values | 25 |
18 Mar 22 | Diffie-Hellman | Generators of Groups | 20 |
18 Mar 22 | Diffie-Hellman | Working with Fields | 10 |
16 Aug 21 | RSA | Endless Emails | 150 |
16 Aug 21 | RSA | Everything is Still Big | 100 |
24 Jul 21 | RSA | Crossed Wires | 100 |
24 Jul 21 | RSA | Everything is Big | 70 |
15 Jul 21 | General | SSH Keys | 35 |
29 Jun 21 | RSA | Modulus Inutilis | 50 |
29 Jun 21 | RSA | Salty | 20 |
27 Jun 21 | RSA | Manyprime | 40 |
27 Jun 21 | RSA | Square Eyes | 35 |
27 Jun 21 | RSA | Monoprime | 30 |
27 Jun 21 | RSA | Inferius Prime | 30 |
27 Jun 21 | RSA | RSA Signatures | 25 |
27 Jun 21 | RSA | Factoring | 15 |
22 Apr 21 | Symmetric Ciphers | Bringing It All Together | 50 |
22 Apr 21 | Symmetric Ciphers | Diffusion through Permutation | 30 |
22 Apr 21 | Symmetric Ciphers | Confusion through Substitution | 25 |
22 Apr 21 | Symmetric Ciphers | Round Keys | 20 |
22 Apr 21 | Symmetric Ciphers | Structure of AES | 15 |
22 Apr 21 | Symmetric Ciphers | Resisting Bruteforce | 10 |
22 Apr 21 | Symmetric Ciphers | Keyed Permutations | 5 |
19 Mar 21 | Crypto on the Web | Token Appreciation | 5 |
19 Mar 21 | Mathematics | Successive Powers | 60 |
19 Mar 21 | Hash Functions | Jack's Birthday Hash | 20 |
17 Mar 21 | Lattices | Find the Lattice | 100 |
17 Mar 21 | Lattices | Gaussian Reduction | 50 |
16 Mar 21 | Lattices | What's a Lattice? | 40 |
15 Mar 21 | RSA | RSA Decryption | 20 |
15 Mar 21 | RSA | Private Keys | 20 |
15 Mar 21 | RSA | Euler's Totient | 20 |
15 Mar 21 | RSA | Public Keys | 15 |
15 Mar 21 | RSA | Modular Exponentiation | 10 |
15 Mar 21 | Lattices | Gram Schmidt | 30 |
15 Mar 21 | Lattices | Size and Basis | 15 |
15 Mar 21 | Lattices | Vectors | 10 |
14 Mar 21 | Mathematics | Chinese Remainder Theorem | 40 |
14 Mar 21 | Mathematics | Modular Square Root | 35 |
14 Mar 21 | Mathematics | Legendre Symbol | 35 |
14 Mar 21 | Mathematics | Quadratic Residues | 25 |
14 Mar 21 | General | Transparency | 50 |
14 Mar 21 | General | CERTainly not | 30 |
14 Mar 21 | General | Privacy-Enhanced Mail? | 25 |
14 Mar 21 | General | Modular Inverting | 25 |
14 Mar 21 | General | Modular Arithmetic 2 | 20 |
14 Mar 21 | General | Modular Arithmetic 1 | 20 |
14 Mar 21 | General | Extended GCD | 20 |
14 Mar 21 | General | Greatest Common Divisor | 15 |
14 Mar 21 | General | Lemur XOR | 40 |
14 Mar 21 | General | You either know, XOR you don't | 30 |
14 Mar 21 | General | Favourite byte | 20 |
14 Mar 21 | General | XOR Properties | 15 |
14 Mar 21 | General | XOR Starter | 10 |
14 Mar 21 | General | Bytes and Big Integers | 10 |
14 Mar 21 | General | Base64 | 10 |
14 Mar 21 | General | Hex | 5 |
14 Mar 21 | General | ASCII | 5 |
14 Mar 21 | General | Encoding Challenge | 40 |
14 Mar 21 | Introduction | Network Attacks | 5 |
14 Mar 21 | Introduction | Great Snakes | 3 |
14 Mar 21 | Introduction | Finding Flags | 2 |
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