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Solved Challenges

Crypto on the Web Saying Hello 20
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Post-Quantum Noise Free 40
Post-Quantum From Private to Public Key LWE 25
Post-Quantum LWE Low Bits Message 20
Post-Quantum LWE High Bits Message 15
Post-Quantum LWE Intro 10
Mathematics No Way Back Home 100
Post-Quantum LWE Background 5
Mathematics Ellipse Curve Cryptography 125
RSA Bespoke Padding 100
RSA Null or Never 100
RSA Ron was Wrong, Whit is Right 90
RSA Blinding Light 120
RSA Signing Server 60
Symmetric Ciphers Dancing Queen 120
Mathematics Cofactor Cofantasy 150
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Hash Functions No Difference 175
Misc Lo-Hi Card Game 120
Symmetric Ciphers Paper Plane 120
Hash Functions Mixed Up 120
Hash Functions MD0 80
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
Misc No Leaks 100
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Triple DES 60
RSA Everything is Big 70
Symmetric Ciphers Bean Counter 60
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Symmetric Ciphers Lazy CBC 60
Misc Toshi's Treasure 150
Misc Armory 100
Post-Quantum Too Many Errors 100
Hash Functions Hash Stuffing 50
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Misc Gotta Go Fast 40
Mathematics Broken RSA 100
Mathematics Unencryptable 125
RSA Infinite Descent 50
RSA Endless Emails 150
RSA Modulus Inutilis 50
RSA Inferius Prime 30
RSA Factoring 15
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Mathematics Gaussian Reduction 50
Mathematics Gram Schmidt 30
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Point Addition 30
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Negation 10
Mathematics Modular Square Root 35
RSA Crossed Wires 100
Mathematics Modular Binomials 80
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Diffie-Hellman Additive 70
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Bringing It All Together 50
General SSH Keys 35
General CERTainly not 30
General Extended GCD 20
General Encoding Challenge 40
Symmetric Ciphers Diffusion through Permutation 30
RSA RSA Starter 6 25
General Lemur XOR 40
Mathematics Adrien's Signs 80
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Resisting Bruteforce 10
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Mathematics Successive Powers 60
RSA Marin's Secrets 50
RSA Salty 20
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
Elliptic Curves Background Reading 5
Mathematics What's a Lattice? 40
Mathematics Legendre Symbol 35
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 1 10
RSA Square Eyes 35
RSA Monoprime 30
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
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Keyed Permutations 5
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Mathematics Size and Basis 15
Mathematics Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Quadratic Residues 25
General Privacy-Enhanced Mail? 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Modular Inverting 25
General Greatest Common Divisor 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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