K4tou

Two robots

Joined:

Rank: #494

Country: 

Level: 1
7035 0 0 0

0 points to level up

Trophy Case

gold-trophy gold-trophy silver-trophy bronze-trophy gold-trophy gold-trophy silver-trophy empty-trophy bronze-trophy bronze-trophy gold-trophy empty-trophy empty-trophy

Solved Challenges

Mathematics Ellipse Curve Cryptography 125
Isogenies Abelian SIDH 90
Diffie-Hellman Script Kiddie 70
Isogenies Better than Linear 85
Mathematics Adrien's Signs 80
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Elliptic Curves Curveball 100
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Isogenies André Encoding 80
Isogenies What's My Kernel 70
Isogenies CSIDH Key Exchange 90
Isogenies Twisted CSIDH Isogenies 70
Isogenies Secret Exponents 60
Isogenies Prime Power Isogenies 50
Isogenies Special Isogenies 30
Isogenies Breaking SIDH 250
Isogenies SIDH Key Exchange 80
Isogenies Composite Isogenies 60
Isogenies Three Isogenies 35
Isogenies Two Isogenies 30
Isogenies DLOG on the Surface 40
Isogenies Montgomery Curves 30
Isogenies Image Point Arithmetic 30
Isogenies Where's the Supersingular Curve 25
Isogenies The j-invariant 20
Isogenies Introduction to Isogenies 10
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Diffie-Hellman Static Client 2 120
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
RSA Blinding Light 120
RSA Let's Decrypt 80
RSA Null or Never 100
Lattices Backpack Cryptography 120
Lattices Find the Lattice 100
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Digestive 60
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
RSA Fast Primes 75
RSA Signing Server 60
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Crypto on the Web Sharks on the Wire 10
Lattices LWE Background 5
RSA Ron was Wrong, Whit is Right 90
RSA Marin's Secrets 50
RSA Bespoke Padding 100
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers Oh SNAP 120
Crypto on the Web JSON in JSON 40
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Mathematics Chinese Remainder Theorem 40
Mathematics Quadratic Residues 25
Symmetric Ciphers Logon Zero 80
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
RSA Infinite Descent 50
RSA RSA Backdoor Viability 175
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Bringing It All Together 50
Mathematics Broken RSA 100
General Lemur XOR 40
General Encoding Challenge 40
Symmetric Ciphers CTRIME 70
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Square Eyes 35
RSA Inferius Prime 30
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Monoprime 30
RSA Factoring 15
RSA RSA Signatures 25
RSA Endless Emails 150
RSA Vote for Pedro 150
RSA Let's Decrypt Again 175
CTF Archive Sign in Please (HKCERT CTF) 0
Lattices Vectors 10
Lattices Size and Basis 15
Introduction Network Attacks 5
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Greatest Common Divisor 15
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

Level Up

level up icon

You are now level Current level