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Solved Challenges

Post-Quantum LWE Intro 10
Elliptic Curves No Random, No Bias 120
Elliptic Curves Edwards Goes Degenerate 100
Hash Functions MDFlag 125
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Paper Plane 120
Elliptic Curves Digestive 60
Hash Functions Mixed Up 120
Hash Functions Twin Keys 100
Hash Functions PriMeD5 100
Misc L-Win 120
Misc RSA vs RNG 150
Misc Nothing Up My Sleeve 150
Elliptic Curves ProSign 3 100
Elliptic Curves Double and Broken 50
Misc Trust Games 150
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Hash Functions MD0 80
Diffie-Hellman The Matrix Revolutions 125
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Mathematics Backpack Cryptography 120
Mathematics Real Eisenstein 150
Mathematics Cofactor Cofantasy 150
Post-Quantum LWE Background 5
Mathematics Prime and Prejudice 200
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web RSA or HMAC? Part 2 100
Mathematics Ellipse Curve Cryptography 125
Hash Functions Hash Stuffing 50
Hash Functions No Difference 175
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman The Matrix 75
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Curveball 100
Misc Bruce Schneier's Password 100
Misc Toshi's Treasure 150
Misc Armory 100
Misc Bit by Bit 100
Misc Lo-Hi Card Game 120
Elliptic Curves Elliptic Nodes 150
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
Misc No Leaks 100
Misc Gotta Go Fast 40
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Crypto on the Web Secure Protocols 5
Hash Functions Collider 50
RSA Let's Decrypt Again 175
RSA Let's Decrypt 80
Mathematics Roll your Own 125
Diffie-Hellman Static Client 2 120
RSA Vote for Pedro 150
RSA Null or Never 100
Diffie-Hellman Static Client 100
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Mathematics Find the Lattice 100
Mathematics Gaussian Reduction 50
Crypto on the Web RSA or HMAC? 35
Elliptic Curves Moving Problems 150
Crypto on the Web Sharks on the Wire 10
Mathematics No Way Back Home 100
RSA Bespoke Padding 100
RSA Blinding Light 120
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Mathematics Broken RSA 100
Mathematics Adrien's Signs 80
RSA Signing Server 60
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
RSA Endless Emails 150
RSA Crossed Wires 100
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
Symmetric Ciphers Passwords as Keys 50
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
General Encoding Challenge 40
General SSH Keys 35
General Lemur XOR 40
Diffie-Hellman Diffie-Hellman Starter 2 20
Introduction Network Attacks 5
General You either know, XOR you don't 30
General Transparency 50
Mathematics Successive Powers 60
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
General CERTainly not 30
Mathematics Unencryptable 125
Mathematics Modular Binomials 80
Mathematics Gram Schmidt 30
Mathematics What's a Lattice? 40
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Crypto on the Web JSON in JSON 40
Elliptic Curves Background Reading 5
Diffie-Hellman Diffie-Hellman Starter 3 20
RSA RSA Backdoor Viability 175
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Still Big 100
RSA Modulus Inutilis 50
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
Crypto on the Web JWT Secrets 25
RSA Everything is Big 70
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
RSA Salty 20
RSA Inferius Prime 30
General Privacy-Enhanced Mail? 25
Diffie-Hellman Diffie-Hellman Starter 1 10
Mathematics Size and Basis 15
General Base64 10
General Modular Inverting 25
Mathematics Vectors 10
Mathematics Chinese Remainder Theorem 40
General Modular Arithmetic 1 20
Mathematics Quadratic Residues 25
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Modular Arithmetic 2 20
General Extended GCD 20
General Greatest Common Divisor 15
Symmetric Ciphers Resisting Bruteforce 10
RSA Factoring 15
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
Symmetric Ciphers Keyed Permutations 5
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
RSA RSA Starter 2 15
RSA RSA Starter 1 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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