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Solved Challenges

RSA Signing Server 60
Lattices Nativity 60
Mathematics Successive Powers 60
Isogenies Secret Exponents 60
Isogenies Composite Isogenies 60
Hash Functions Long Story Short 60
ZKPs Too Honest 50
ZKPs Pairing-Based Cryptography 50
Lattices Bounded Noise 50
Lattices Gaussian Reduction 50
Isogenies Prime Power Isogenies 50
General Transparency 50
Misc Gotta Go Fast 40
General SSH Keys 35
Crypto on the Web Authenticated Handshake 40
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JSON in JSON 40
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
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 JWT Sessions 10
Crypto on the Web Secure Protocols 5
Elliptic Curves Smooth Criminal 60
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Parameter Injection 60
Elliptic Curves Digestive 60
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Bean Counter 60
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Modulus Inutilis 50
Hash Functions Seventy-Two 50
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Elliptic Curves Efficient Exchange 50
Elliptic Curves Double and Broken 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Bringing It All Together 50
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Elliptic Curves Scalar Multiplication 35
RSA Square Eyes 35
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
RSA Manyprime 40
Mathematics Chinese Remainder Theorem 40
Lattices Gram Schmidt 30
Hash Functions Jack's Birthday Confusion 30
General CERTainly not 30
RSA Inferius Prime 30
RSA Monoprime 30
Symmetric Ciphers Diffusion through Permutation 30
Hash Functions Merkle Trees 25
RSA RSA Signatures 25
General You either know, XOR you don't 30
Elliptic Curves Point Addition 30
General Privacy-Enhanced Mail? 25
Mathematics Quadratic Residues 25
Symmetric Ciphers Confusion through Substitution 25
RSA RSA Decryption 20
RSA Salty 20
General Modular Inverting 25
RSA Private Keys 20
RSA Euler's Totient 20
Hash Functions Jack's Birthday Hash 20
General Favourite byte 20
General Modular Arithmetic 2 20
Symmetric Ciphers Round Keys 20
General Modular Arithmetic 1 20
General Extended GCD 20
RSA Public Keys 15
RSA Factoring 15
Symmetric Ciphers Modes of Operation Starter 15
General XOR Properties 15
General Greatest Common Divisor 15
Symmetric Ciphers Structure of AES 15
Lattices Vectors 10
RSA Modular Exponentiation 10
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
Elliptic Curves Point Negation 10
Symmetric Ciphers Resisting Bruteforce 10
General Hex 5
ZKPs ZKP Introduction 5
General ASCII 5
Elliptic Curves Background Reading 5
Symmetric Ciphers Keyed Permutations 5
Introduction Finding Flags 2

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