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Solved Challenges

Symmetric Ciphers Beatboxer 150
Symmetric Ciphers Pad Thai 80
Symmetric Ciphers The Good, The Pad, The Ugly 100
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Paper Plane 120
Lattices Too Many Errors 100
Hash Functions WOTS Up 2 90
Hash Functions WOTS Up 75
Misc Trust Games 150
Lattices Noise Cheap 90
Lattices Noise Free 40
RSA RSA Backdoor Viability 175
RSA Fast Primes 75
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
Symmetric Ciphers Dancing Queen 120
Misc Bit by Bit 100
Misc RSA vs RNG 150
Misc Toshi's Treasure 150
Misc Nothing Up My Sleeve 150
Misc Lo-Hi Card Game 120
Mathematics No Way Back Home 100
Hash Functions Mixed Up 120
Misc Armory 100
Lattices Backpack Cryptography 120
Lattices Find the Lattice 100
Elliptic Curves Curveball 100
Crypto on the Web RSA or HMAC? Part 2 100
Elliptic Curves Exceptional Curves 100
Elliptic Curves No Random, No Bias 120
Elliptic Curves ProSign 3 100
Hash Functions Twin Keys 100
RSA Bespoke Padding 100
Hash Functions MDFlag 125
RSA Null or Never 100
Symmetric Ciphers Stream of Consciousness 80
Elliptic Curves Smooth Criminal 60
Hash Functions No Difference 175
Symmetric Ciphers Logon Zero 80
Crypto on the Web JSON in JSON 40
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Crypto on the Web Secure Protocols 5
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Hash Functions Jack's Birthday Confusion 30
Hash Functions PriMeD5 100
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
Symmetric Ciphers CTRIME 70
Hash Functions Hash Stuffing 50
Symmetric Ciphers Bean Counter 60
Hash Functions MD0 80
Hash Functions Collider 50
Crypto on the Web Sharks on the Wire 10
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Triple DES 60
Mathematics Successive Powers 60
Symmetric Ciphers ECB Oracle 60
Lattices From Private to Public Key LWE 25
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
Mathematics Broken RSA 100
Diffie-Hellman Static Client 2 120
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Let's Decrypt 80
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Flipping Cookie 60
RSA Ron was Wrong, Whit is Right 90
RSA Blinding Light 120
Elliptic Curves Background Reading 5
Misc No Leaks 100
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Misc Gotta Go Fast 40
Symmetric Ciphers ECB CBC WTF 55
Mathematics Modular Square Root 35
Mathematics Adrien's Signs 80
Mathematics Modular Binomials 80
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Endless Emails 150
Lattices LWE Intro 10
Diffie-Hellman Script Kiddie 70
Symmetric Ciphers Lazy CBC 60
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
RSA Everything is Big 70
Diffie-Hellman Export-grade 100
General Encoding Challenge 40
Lattices LWE Background 5
Lattices Gaussian Reduction 50
Symmetric Ciphers Passwords as Keys 50
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
RSA Signing Server 60
Diffie-Hellman Additive 70
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
RSA Manyprime 40
Diffie-Hellman Static Client 100
RSA Modulus Inutilis 50
RSA Inferius Prime 30
General Lemur XOR 40
RSA Salty 20
Diffie-Hellman Parameter Injection 60
Symmetric Ciphers Structure of AES 15
RSA Square Eyes 35
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Mathematics Chinese Remainder Theorem 40
RSA Monoprime 30
RSA Factoring 15
RSA RSA Signatures 25
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
General Modular Inverting 25
General Extended GCD 20
General Modular Arithmetic 2 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers Round Keys 20
Hash Functions Jack's Birthday Hash 20
Symmetric Ciphers Modes of Operation Starter 15
General Modular Arithmetic 1 20
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Favourite byte 20
Introduction Network Attacks 5
General Greatest Common Divisor 15
General You either know, XOR you don't 30
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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