H04X

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Solved Challenges

Misc RSA vs RNG 150
Diffie-Hellman The Matrix 75
Elliptic Curves ProSign 3 100
Mathematics Broken RSA 100
Mathematics Modular Binomials 80
Mathematics Real Eisenstein 150
Mathematics Ellipse Curve Cryptography 125
Misc L-Win 120
Misc Trust Games 150
Mathematics Cofactor Cofantasy 150
Mathematics Roll your Own 125
Mathematics Unencryptable 125
Misc Toshi's Treasure 150
Misc Armory 100
Misc Bit by Bit 100
Misc Nothing Up My Sleeve 150
Misc Lo-Hi Card Game 120
Misc No Leaks 100
Misc Gotta Go Fast 40
Misc Bruce Schneier's Password 100
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves No Random, No Bias 120
Elliptic Curves Digestive 60
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
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
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
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 Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Diffie-Hellman Script Kiddie 70
Hash Functions Mixed Up 120
Hash Functions MDFlag 125
Hash Functions No Difference 175
Mathematics No Way Back Home 100
Symmetric Ciphers Paper Plane 120
Mathematics Find the Lattice 100
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
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 Dancing Queen 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Triple DES 60
RSA Let's Decrypt Again 175
RSA Null or Never 100
RSA Blinding Light 120
RSA Vote for Pedro 150
Hash Functions MD0 80
Hash Functions PriMeD5 100
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
General Encoding Challenge 40
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
RSA Bespoke Padding 100
RSA RSA Backdoor Viability 175
RSA Ron was Wrong, Whit is Right 90
General Lemur XOR 40
General CERTainly not 30
General Privacy-Enhanced Mail? 25
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Endless Emails 150
RSA Everything is Still Big 100
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 Factoring 15
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
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 Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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