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Solved Challenges

Elliptic Curves Moving Problems 150
Elliptic Curves ProSign 3 100
Misc Armory 100
Misc No Leaks 100
Hash Functions PriMeD5 100
Misc Bruce Schneier's Password 100
Symmetric Ciphers Oh SNAP 120
Diffie-Hellman Script Kiddie 70
RSA Let's Decrypt Again 175
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers Triple DES 60
RSA Bespoke Padding 100
RSA Null or Never 100
RSA RSA Backdoor Viability 175
Mathematics No Way Back Home 100
Mathematics Roll your Own 125
Mathematics Cofactor Cofantasy 150
Post-Quantum LWE Background 5
RSA Vote for Pedro 150
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Elliptic Curves Curveball 100
Mathematics Prime and Prejudice 200
Mathematics Real Eisenstein 150
Mathematics Ellipse Curve Cryptography 125
Hash Functions MD0 80
Hash Functions Collider 50
Elliptic Curves Montgomery's Ladder 40
General SSH Keys 35
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
RSA Blinding Light 120
RSA Let's Decrypt 80
Misc L-Win 120
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers CTRIME 70
Crypto on the Web JSON in JSON 40
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers ECB CBC WTF 55
Misc Lo-Hi Card Game 120
Symmetric Ciphers Passwords as Keys 50
Diffie-Hellman Static Client 100
Elliptic Curves Exceptional Curves 100
Hash Functions Jack's Birthday Hash 20
Mathematics Adrien's Signs 80
Hash Functions Jack's Birthday Confusion 30
RSA Endless Emails 150
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
RSA Signing Server 60
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Marin's Secrets 50
Mathematics Unencryptable 125
Mathematics Modular Binomials 80
RSA Infinite Descent 50
RSA Everything is Still Big 100
Elliptic Curves Smooth Criminal 60
General Transparency 50
Symmetric Ciphers ECB Oracle 60
Diffie-Hellman Additive 70
Diffie-Hellman Export-grade 100
Mathematics Successive Powers 60
Mathematics Broken RSA 100
Mathematics Backpack Cryptography 120
Diffie-Hellman Parameter Injection 60
Symmetric Ciphers Modes of Operation Starter 15
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
RSA Crossed Wires 100
RSA Everything is Big 70
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Misc Gotta Go Fast 40
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Mathematics Find the Lattice 100
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
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
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 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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