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Solved Challenges

Crypto on the Web RSA or HMAC? 35
Lattices Bounded Noise 50
Hash Functions Merkle Trees 25
Lattices Nativity 60
Symmetric Ciphers Oracular Spectacular 150
Symmetric Ciphers The Good, The Pad, The Ugly 100
Symmetric Ciphers Pad Thai 80
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Beatboxer 150
Mathematics Cofactor Cofantasy 150
Diffie-Hellman The Matrix Revolutions 125
Mathematics Prime and Prejudice 200
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
RSA Fast Primes 75
Hash Functions WOTS Up 2 90
Hash Functions WOTS Up 75
Elliptic Curves Double and Broken 50
Misc Lo-Hi Card Game 120
Lattices LWE Intro 10
Lattices LWE Background 5
Elliptic Curves Real Curve Crypto 200
Hash Functions Invariant 250
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves Digestive 60
Elliptic Curves No Random, No Bias 120
RSA Let's Decrypt Again 175
Symmetric Ciphers Paper Plane 120
Mathematics No Way Back Home 100
Diffie-Hellman The Matrix 75
Misc No Leaks 100
Misc Gotta Go Fast 40
Hash Functions Twin Keys 100
Hash Functions PriMeD5 100
Hash Functions No Difference 175
Hash Functions Mixed Up 120
Hash Functions MD0 80
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Elliptic Curves ProSign 3 100
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Elliptic Curves Moving Problems 150
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Curveball 100
Diffie-Hellman Script Kiddie 70
RSA Vote for Pedro 150
RSA Let's Decrypt 80
RSA Blinding Light 120
RSA Bespoke Padding 100
Symmetric Ciphers Oh SNAP 120
Mathematics Roll your Own 125
Diffie-Hellman Additive 70
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Diffie-Hellman Static Client 2 120
RSA Ron was Wrong, Whit is Right 90
Symmetric Ciphers Dancing Queen 120
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Elliptic Curves Montgomery's Ladder 40
Symmetric Ciphers Passwords as Keys 50
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
RSA Signing Server 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
RSA Endless Emails 150
Symmetric Ciphers Lazy CBC 60
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Symmetric Ciphers Bean Counter 60
General SSH Keys 35
Diffie-Hellman The Matrix Reloaded 100
Symmetric Ciphers ECB Oracle 60
Elliptic Curves Point Negation 10
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
RSA RSA Backdoor Viability 175
Mathematics Unencryptable 125
RSA Marin's Secrets 50
Diffie-Hellman Deriving Symmetric Keys 40
RSA Infinite Descent 50
Symmetric Ciphers Triple DES 60
Elliptic Curves Smooth Criminal 60
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Lattices Backpack Cryptography 120
Mathematics Real Eisenstein 150
RSA Null or Never 100
Misc Armory 100
Mathematics Ellipse Curve Cryptography 125
Mathematics Broken RSA 100
RSA Crossed Wires 100
Lattices Gram Schmidt 30
Lattices What's a Lattice? 40
Mathematics Modular Binomials 80
Mathematics Successive Powers 60
Lattices Find the Lattice 100
Elliptic Curves Background Reading 5
Diffie-Hellman Computing Shared Secrets 30
Mathematics Adrien's Signs 80
Diffie-Hellman Computing Public Values 25
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Lattices Gaussian Reduction 50
Mathematics Modular Square Root 35
Symmetric Ciphers ECB CBC WTF 55
Diffie-Hellman Generators of Groups 20
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Diffie-Hellman Working with Fields 10
RSA Manyprime 40
Introduction Network Attacks 5
General Encoding Challenge 40
General Transparency 50
General Privacy-Enhanced Mail? 25
General CERTainly not 30
General Lemur XOR 40
General Favourite byte 20
General You either know, XOR you don't 30
General Modular Arithmetic 1 20
RSA RSA Signatures 25
RSA Modulus Inutilis 50
RSA Everything is Still Big 100
RSA Everything is Big 70
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Extended GCD 20
General Modular Arithmetic 2 20
General Modular Inverting 25
General Greatest Common Divisor 15
General XOR Properties 15
General XOR Starter 10
Introduction Great Snakes 3
RSA Salty 20
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Finding Flags 2

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