20 Aug 24 | Elliptic Curves | Real Curve Crypto | 200 |
20 Aug 24 | Mathematics | Real Eisenstein | 150 |
16 Jul 24 | ZKPs | Ticket Maestro | 200 |
16 Jul 24 | ZKPs | Fischlin Transform | 180 |
16 Jul 24 | ZKPs | Hamiltonicity 2 | 175 |
12 Jul 24 | ZKPs | Hamiltonicity 1 | 100 |
12 Jul 24 | ZKPs | Too Honest | 50 |
12 Jul 24 | ZKPs | OR Proof | 75 |
12 Jul 24 | ZKPs | Non-Interactive | 35 |
12 Jul 24 | ZKPs | Honest Verifier Zero Knowledge | 30 |
12 Jul 24 | ZKPs | Special Soundness | 25 |
12 Jul 24 | ZKPs | Proofs of Knowledge | 20 |
12 Jul 24 | ZKPs | ZKP Introduction | 5 |
16 Jul 23 | RSA | Let's Decrypt Again | 175 |
9 Jul 23 | Mathematics | Prime and Prejudice | 200 |
9 Jul 23 | Elliptic Curves | Digestive | 60 |
1 Jul 23 | Diffie-Hellman | Static Client 2 | 120 |
1 Jul 23 | Diffie-Hellman | Static Client | 100 |
1 Jul 23 | Misc | Bit by Bit | 100 |
1 Jul 23 | Symmetric Ciphers | Triple DES | 60 |
31 May 23 | Mathematics | Cofactor Cofantasy | 150 |
30 May 23 | Mathematics | No Way Back Home | 100 |
17 Mar 22 | Symmetric Ciphers | Logon Zero | 80 |
17 Mar 22 | RSA | Vote for Pedro | 150 |
17 Mar 22 | Crypto on the Web | RSA or HMAC? Part 2 | 100 |
17 Mar 22 | Crypto on the Web | RSA or HMAC? | 35 |
15 Mar 22 | RSA | Blinding Light | 120 |
25 Jan 22 | Lattices | Gaussian Reduction | 50 |
25 Jan 22 | Lattices | What's a Lattice? | 40 |
25 Jan 22 | Lattices | Gram Schmidt | 30 |
25 Jan 22 | Lattices | Size and Basis | 15 |
25 Jan 22 | Lattices | Vectors | 10 |
25 Jan 22 | Hash Functions | Mixed Up | 120 |
25 Jan 22 | RSA | Fast Primes | 75 |
25 Jan 22 | RSA | RSA Backdoor Viability | 175 |
21 Jan 22 | Diffie-Hellman | The Matrix Reloaded | 100 |
20 Jan 22 | Hash Functions | MD0 | 80 |
19 Jan 22 | Crypto on the Web | JSON in JSON | 40 |
19 Jan 22 | Elliptic Curves | No Random, No Bias | 120 |
19 Jan 22 | Hash Functions | Hash Stuffing | 50 |
19 Jan 22 | Elliptic Curves | Double and Broken | 50 |
19 Jan 22 | Elliptic Curves | Montgomery's Ladder | 40 |
18 Jan 22 | Elliptic Curves | Exceptional Curves | 100 |
18 Jan 22 | Elliptic Curves | ProSign 3 | 100 |
18 Jan 22 | Elliptic Curves | Curveball | 100 |
17 Jan 22 | Mathematics | Unencryptable | 125 |
17 Jan 22 | Elliptic Curves | Micro Transmissions | 120 |
17 Jan 22 | Elliptic Curves | Moving Problems | 150 |
17 Jan 22 | Elliptic Curves | Elliptic Nodes | 150 |
17 Jan 22 | Symmetric Ciphers | Dancing Queen | 120 |
17 Jan 22 | Symmetric Ciphers | Stream of Consciousness | 80 |
17 Jan 22 | Symmetric Ciphers | CTRIME | 70 |
17 Jan 22 | Symmetric Ciphers | Bean Counter | 60 |
16 Jan 22 | Symmetric Ciphers | Symmetry | 50 |
16 Jan 22 | Symmetric Ciphers | Lazy CBC | 60 |
16 Jan 22 | Symmetric Ciphers | Flipping Cookie | 60 |
16 Jan 22 | Symmetric Ciphers | ECB Oracle | 60 |
16 Jan 22 | Symmetric Ciphers | ECB CBC WTF | 55 |
16 Jan 22 | Symmetric Ciphers | Bringing It All Together | 50 |
16 Jan 22 | Diffie-Hellman | Script Kiddie | 70 |
2 Oct 21 | Misc | Armory | 100 |
2 Oct 21 | Diffie-Hellman | The Matrix | 75 |
25 Sep 21 | Symmetric Ciphers | Passwords as Keys | 50 |
25 Sep 21 | Mathematics | Modular Binomials | 80 |
25 Sep 21 | Mathematics | Adrien's Signs | 80 |
23 Sep 21 | Mathematics | Roll your Own | 125 |
18 Sep 21 | RSA | Everything is Still Big | 100 |
6 Jul 21 | Hash Functions | Collider | 50 |
6 Jul 21 | Mathematics | Chinese Remainder Theorem | 40 |
6 Jul 21 | Mathematics | Legendre Symbol | 35 |
6 Jul 21 | Mathematics | Modular Square Root | 35 |
6 Jul 21 | Mathematics | Broken RSA | 100 |
6 Jul 21 | General | CERTainly not | 30 |
6 Jul 21 | General | Transparency | 50 |
6 Jul 21 | General | SSH Keys | 35 |
6 Jul 21 | Symmetric Ciphers | Diffusion through Permutation | 30 |
6 Jul 21 | Symmetric Ciphers | Confusion through Substitution | 25 |
6 Jul 21 | Symmetric Ciphers | Round Keys | 20 |
6 Jul 21 | Symmetric Ciphers | Structure of AES | 15 |
6 Jul 21 | RSA | Let's Decrypt | 80 |
6 Jul 21 | RSA | Signing Server | 60 |
6 Jul 21 | RSA | Null or Never | 100 |
6 Jul 21 | RSA | Bespoke Padding | 100 |
6 Jul 21 | RSA | Ron was Wrong, Whit is Right | 90 |
6 Jul 21 | RSA | Marin's Secrets | 50 |
6 Jul 21 | RSA | Infinite Descent | 50 |
6 Jul 21 | RSA | Endless Emails | 150 |
6 Jul 21 | RSA | Crossed Wires | 100 |
6 Jul 21 | RSA | Inferius Prime | 30 |
6 Jul 21 | RSA | Manyprime | 40 |
6 Jul 21 | RSA | Square Eyes | 35 |
6 Jul 21 | RSA | Monoprime | 30 |
13 Jun 21 | RSA | RSA Signatures | 25 |
5 May 21 | Misc | Lo-Hi Card Game | 120 |
4 May 21 | Misc | No Leaks | 100 |
4 May 21 | Misc | Gotta Go Fast | 40 |
4 May 21 | General | Encoding Challenge | 40 |
25 Apr 21 | General | Modular Inverting | 25 |
25 Apr 21 | General | Extended GCD | 20 |
25 Apr 21 | General | Lemur XOR | 40 |
25 Apr 21 | Elliptic Curves | Smooth Criminal | 60 |
25 Apr 21 | Elliptic Curves | Efficient Exchange | 50 |
25 Apr 21 | Elliptic Curves | Curves and Logs | 40 |
25 Apr 21 | Elliptic Curves | Scalar Multiplication | 35 |
25 Apr 21 | Elliptic Curves | Point Addition | 30 |
25 Apr 21 | Elliptic Curves | Point Negation | 10 |
1 Mar 21 | Diffie-Hellman | Additive | 70 |
1 Mar 21 | Diffie-Hellman | Export-grade | 100 |
1 Mar 21 | Diffie-Hellman | Parameter Injection | 60 |
19 Jan 21 | Mathematics | Successive Powers | 60 |
19 Jan 21 | Hash Functions | Jack's Birthday Hash | 20 |
18 Jan 21 | Hash Functions | Jack's Birthday Confusion | 30 |
12 Jan 21 | RSA | Everything is Big | 70 |
12 Jan 21 | RSA | Salty | 20 |
12 Jan 21 | RSA | Modulus Inutilis | 50 |
4 Jan 21 | RSA | RSA Decryption | 20 |
4 Jan 21 | RSA | Private Keys | 20 |
4 Jan 21 | RSA | Euler's Totient | 20 |
4 Jan 21 | RSA | Public Keys | 15 |
4 Jan 21 | Elliptic Curves | Background Reading | 5 |
4 Jan 21 | General | Privacy-Enhanced Mail? | 25 |
4 Jan 21 | General | Modular Arithmetic 1 | 20 |
4 Jan 21 | General | Modular Arithmetic 2 | 20 |
4 Jan 21 | General | Greatest Common Divisor | 15 |
4 Jan 21 | General | You either know, XOR you don't | 30 |
4 Jan 21 | General | Favourite byte | 20 |
4 Jan 21 | General | XOR Properties | 15 |
4 Jan 21 | General | XOR Starter | 10 |
4 Jan 21 | Diffie-Hellman | Deriving Symmetric Keys | 40 |
4 Jan 21 | Diffie-Hellman | Computing Shared Secrets | 30 |
4 Jan 21 | Diffie-Hellman | Computing Public Values | 25 |
4 Jan 21 | Diffie-Hellman | Generators of Groups | 20 |
4 Jan 21 | Diffie-Hellman | Working with Fields | 10 |
4 Jan 21 | Crypto on the Web | JWT Secrets | 25 |
4 Jan 21 | Crypto on the Web | No Way JOSE | 20 |
4 Jan 21 | Crypto on the Web | JWT Sessions | 10 |
4 Jan 21 | Symmetric Ciphers | Modes of Operation Starter | 15 |
4 Jan 21 | Symmetric Ciphers | Resisting Bruteforce | 10 |
4 Jan 21 | Symmetric Ciphers | Keyed Permutations | 5 |
3 Jan 21 | General | Bytes and Big Integers | 10 |
3 Jan 21 | General | Base64 | 10 |
3 Jan 21 | General | Hex | 5 |
3 Jan 21 | General | ASCII | 5 |
3 Jan 21 | Mathematics | Quadratic Residues | 25 |
3 Jan 21 | Crypto on the Web | Token Appreciation | 5 |
3 Jan 21 | RSA | Factoring | 15 |
3 Jan 21 | RSA | Modular Exponentiation | 10 |
3 Jan 21 | Introduction | Network Attacks | 5 |
3 Jan 21 | Introduction | Great Snakes | 3 |
3 Jan 21 | Introduction | Finding Flags | 2 |
You are now level Current level