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Solved Challenges

CTF Archive Lack of Entropy (Firebird Internal CTF) 0
CTF Archive Put a ring on it (ECSC 2023 (Norway)) 0
Elliptic Curves No Random, No Bias 120
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves Double and Broken 50
Elliptic Curves Digestive 60
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
CTF Archive kaitenzushi (HackTM CTF) 0
CTF Archive d-phi-enc (HackTM CTF) 0
CTF Archive WOTS Up 2 (ECSC 2023 (Norway)) 0
CTF Archive WOTS Up (ECSC 2023 (Norway)) 0
CTF Archive Tough decisions (ECSC 2023 (Norway)) 0
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Triple DES 60
Crypto on the Web JSON in JSON 40
Crypto on the Web RSA or HMAC? 35
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
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
Post-Quantum LWE Background 5
Diffie-Hellman Additive 70
CTF Archive Hide and seek (ECSC 2023 (Norway)) 0
CTF Archive Blind (ECSC 2023 (Norway)) 0
CTF Archive RRSSAA (ECSC 2023 (Norway)) 0
Elliptic Curves Exceptional Curves 100
Misc RSA vs RNG 150
Diffie-Hellman Script Kiddie 70
RSA Null or Never 100
Diffie-Hellman The Matrix 75
Mathematics Real Eisenstein 150
Mathematics Ellipse Curve Cryptography 125
Elliptic Curves Moving Problems 150
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Montgomery's Ladder 40
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
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Mathematics Backpack Cryptography 120
Mathematics Find the Lattice 100
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Unencryptable 125
Mathematics Gram Schmidt 30
RSA Bespoke Padding 100
RSA Signing Server 60
Symmetric Ciphers Flipping Cookie 60
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 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 Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Misc Gotta Go Fast 40
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
RSA RSA Backdoor Viability 175
RSA Ron was Wrong, Whit is Right 90
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
Hash Functions Collider 50
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Mathematics Size and Basis 15
Mathematics Vectors 10
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General Lemur XOR 40
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Encoding Challenge 40
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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