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Solved Challenges

Elliptic Curves Curveball 100
CTF Archive RRSSAA (ECSC 2023 (Norway)) 0
RSA RSA Backdoor Viability 175
RSA Blinding Light 120
RSA Null or Never 100
RSA Bespoke Padding 100
RSA Fast Primes 75
RSA Endless Emails 150
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
Mathematics Ellipse Curve Cryptography 125
Hash Functions Collider 50
Elliptic Curves Double and Broken 50
Elliptic Curves Montgomery's Ladder 40
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Script Kiddie 70
Crypto on the Web JSON in JSON 40
Elliptic Curves Micro Transmissions 120
Elliptic Curves Elliptic Nodes 150
Lattices LWE Background 5
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
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Mathematics Unencryptable 125
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
General Lemur XOR 40
Mathematics Modular Binomials 80
Mathematics Successive Powers 60
Mathematics Adrien's Signs 80
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
RSA Ron was Wrong, Whit is Right 90
Diffie-Hellman Additive 70
Diffie-Hellman Diffie-Hellman Starter 5 40
RSA Signing Server 60
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Still Big 100
RSA Crossed Wires 100
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
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
RSA Everything is Big 70
General Transparency 50
General Privacy-Enhanced Mail? 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General You either know, XOR you don't 30
General Greatest Common Divisor 15
General Favourite byte 20
General Encoding Challenge 40
RSA RSA Starter 6 25
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Structure of AES 15
Mathematics Legendre Symbol 35
Introduction Network Attacks 5
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 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
Symmetric Ciphers Keyed Permutations 5
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General ASCII 5
General Hex 5
Introduction Great Snakes 3
Mathematics Quadratic Residues 25
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 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
Introduction Finding Flags 2

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