Level: 1
5065
0
7
53
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Diffusion through Permutation | 19 | ||
Confusion through Substitution | 20 | ||
Round Keys | 12 | ||
Successive Powers | 1 | ||
Adrien's Signs | -1 | ||
Modular Square Root | 1 | ||
Privacy-Enhanced Mail? | 1 |
Crypto on the Web | Decrypting TLS 1.3 | 35 | |
Crypto on the Web | Decrypting TLS 1.2 | 30 | |
Crypto on the Web | Saying Hello | 20 | |
Crypto on the Web | TLS Handshake | 15 | |
Crypto on the Web | Sharks on the Wire | 10 | |
Crypto on the Web | Secure Protocols | 5 | |
CTF Archive | Unimplemented (TETCTF) | 0 | |
Lattices | LWE Background | 5 | |
Symmetric Ciphers | Triple DES | 60 | |
Elliptic Curves | Smooth Criminal | 60 | |
Elliptic Curves | Efficient Exchange | 50 | |
Mathematics | Unencryptable | 125 | |
Lattices | Backpack Cryptography | 120 | |
General | SSH Keys | 35 | |
Diffie-Hellman | Export-grade | 100 | |
Diffie-Hellman | Parameter Injection | 60 | |
Symmetric Ciphers | Stream of Consciousness | 80 | |
Symmetric Ciphers | CTRIME | 70 | |
Crypto on the Web | JSON in JSON | 40 | |
RSA | RSA Backdoor Viability | 175 | |
Crypto on the Web | RSA or HMAC? | 35 | |
Crypto on the Web | JWT Secrets | 25 | |
Misc | Bruce Schneier's Password | 100 | |
RSA | Vote for Pedro | 150 | |
RSA | Let's Decrypt | 80 | |
RSA | Null or Never | 100 | |
RSA | Bespoke Padding | 100 | |
Elliptic Curves | Curves and Logs | 40 | |
Elliptic Curves | Scalar Multiplication | 35 | |
Elliptic Curves | Point Addition | 30 | |
Elliptic Curves | Point Negation | 10 | |
Symmetric Ciphers | Bean Counter | 60 | |
Symmetric Ciphers | Symmetry | 50 | |
Symmetric Ciphers | Lazy CBC | 60 | |
Symmetric Ciphers | Flipping Cookie | 60 | |
Symmetric Ciphers | ECB CBC WTF | 55 | |
Symmetric Ciphers | ECB Oracle | 60 | |
Misc | No Leaks | 100 | |
Misc | Gotta Go Fast | 40 | |
Hash Functions | Collider | 50 | |
Hash Functions | Jack's Birthday Hash | 20 | |
Hash Functions | Jack's Birthday Confusion | 30 | |
Crypto on the Web | No Way JOSE | 20 | |
Crypto on the Web | JWT Sessions | 10 | |
Crypto on the Web | Token Appreciation | 5 | |
Mathematics | Modular Binomials | 80 | |
General | Transparency | 50 | |
Lattices | Find the Lattice | 100 | |
Lattices | Gaussian Reduction | 50 | |
Mathematics | Broken RSA | 100 | |
Diffie-Hellman | Deriving Symmetric Keys | 40 | |
Diffie-Hellman | Computing Shared Secrets | 30 | |
Diffie-Hellman | Computing Public Values | 25 | |
Diffie-Hellman | Generators of Groups | 20 | |
RSA | Blinding Light | 120 | |
RSA | Signing Server | 60 | |
RSA | Endless Emails | 150 | |
RSA | Everything is Still Big | 100 | |
RSA | Ron was Wrong, Whit is Right | 90 | |
RSA | Fast Primes | 75 | |
RSA | Marin's Secrets | 50 | |
RSA | Infinite Descent | 50 | |
RSA | Crossed Wires | 100 | |
RSA | Everything is Big | 70 | |
RSA | Modulus Inutilis | 50 | |
RSA | Salty | 20 | |
RSA | Manyprime | 40 | |
RSA | Square Eyes | 35 | |
RSA | Monoprime | 30 | |
RSA | Inferius Prime | 30 | |
RSA | RSA Signatures | 25 | |
Lattices | What's a Lattice? | 40 | |
Lattices | Gram Schmidt | 30 | |
Lattices | Size and Basis | 15 | |
Lattices | Vectors | 10 | |
Symmetric Ciphers | Bringing It All Together | 50 | |
Symmetric Ciphers | Diffusion through Permutation | 30 | |
Symmetric Ciphers | Confusion through Substitution | 25 | |
Symmetric Ciphers | Passwords as Keys | 50 | |
Symmetric Ciphers | Round Keys | 20 | |
Symmetric Ciphers | Structure of AES | 15 | |
Symmetric Ciphers | Resisting Bruteforce | 10 | |
Symmetric Ciphers | Keyed Permutations | 5 | |
Mathematics | Successive Powers | 60 | |
Mathematics | Adrien's Signs | 80 | |
Mathematics | Modular Square Root | 35 | |
Mathematics | Legendre Symbol | 35 | |
General | CERTainly not | 30 | |
General | Privacy-Enhanced Mail? | 25 | |
General | Lemur XOR | 40 | |
General | Encoding Challenge | 40 | |
Mathematics | Quadratic Residues | 25 | |
General | XOR Properties | 15 | |
RSA | RSA Decryption | 20 | |
RSA | Private Keys | 20 | |
RSA | Euler's Totient | 20 | |
RSA | Public Keys | 15 | |
General | You either know, XOR you don't | 30 | |
General | Favourite byte | 20 | |
Mathematics | Chinese Remainder Theorem | 40 | |
General | Modular Inverting | 25 | |
General | Modular Arithmetic 2 | 20 | |
General | Modular Arithmetic 1 | 20 | |
General | Extended GCD | 20 | |
General | Greatest Common Divisor | 15 | |
General | XOR Starter | 10 | |
General | Bytes and Big Integers | 10 | |
General | Base64 | 10 | |
Introduction | Network Attacks | 5 | |
Introduction | Great Snakes | 3 | |
Elliptic Curves | Background Reading | 5 | |
Diffie-Hellman | Working with Fields | 10 | |
RSA | Factoring | 15 | |
RSA | Modular Exponentiation | 10 | |
Symmetric Ciphers | Modes of Operation Starter | 15 | |
Introduction | Finding Flags | 2 | |
General | Hex | 5 | |
General | ASCII | 5 |
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