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Solved Challenges

Isogenies Abelian SIDH 90
Elliptic Curves A Twisted Mind 80
ZKPs Ticket Maestro 200
CTF Archive Ticket Maestro (CryptoHack) 0
ZKPs Hamiltonicity 2 175
CTF Archive Hamiltonicity 2 (CryptoHack) 0
ZKPs Mister Saplins The Prover 125
ZKPs Let's Prove It Again 175
ZKPs Let's Prove It 120
ZKPs Couples 100
Isogenies Better than Linear 85
Isogenies André Encoding 80
Isogenies What's My Kernel 70
Isogenies CSIDH Key Exchange 90
Isogenies Twisted CSIDH Isogenies 70
Isogenies Secret Exponents 60
Isogenies Prime Power Isogenies 50
Isogenies Special Isogenies 30
Isogenies SIDH Key Exchange 80
Isogenies Composite Isogenies 60
Isogenies Three Isogenies 35
Isogenies Two Isogenies 30
Isogenies DLOG on the Surface 40
Isogenies Montgomery Curves 30
Isogenies Image Point Arithmetic 30
Isogenies Where's the Supersingular Curve 25
Isogenies The j-invariant 20
Isogenies Introduction to Isogenies 10
Elliptic Curves Checkpoint 150
ZKPs Fischlin Transform 180
CTF Archive Fischlin's Transformation (CryptoHack) 0
ZKPs Mister Saplin's Preview 80
Symmetric Ciphers Oracular Spectacular 150
Symmetric Ciphers The Good, The Pad, The Ugly 100
Symmetric Ciphers Pad Thai 80
Lattices Bounded Noise 50
Hash Functions Merkle Trees 25
CTF Archive Hamiltonicity (CryptoHack) 0
ZKPs Hamiltonicity 1 100
ZKPs Pairing-Based Cryptography 50
ZKPs OR Proof 75
CTF Archive OR Proof (CryptoHack) 0
ZKPs Too Honest 50
ZKPs Non-Interactive 35
ZKPs Honest Verifier Zero Knowledge 30
ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs ZKP Introduction 5
CTF Archive Cipher Mode Picker (HKCERT CTF) 0
CTF Archive Unevaluated (TETCTF) 0
CTF Archive Unimplemented (TETCTF) 0
CTF Archive Calm Down (HKCERT CTF) 0
CTF Archive Sign in Please (HKCERT CTF) 0
CTF Archive 1337crypt (DownUnderCTF) 0
CTF Archive Unbalanced (ICC Athens) 0
CTF Archive Blind (ECSC 2023 (Norway)) 0
CTF Archive Tough decisions (ECSC 2023 (Norway)) 0
Hash Functions WOTS Up 2 90
Hash Functions WOTS Up 75
Lattices Noise Cheap 90
Lattices Missing Modulus 80
Crypto on the Web Megalomaniac 3 120
Crypto on the Web Megalomaniac 1 100
Crypto on the Web Megalomaniac 2 120
Elliptic Curves Digestive 60
Misc RSA vs RNG 150
Crypto on the Web Authenticated Handshake 40
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Lattices Nativity 60
Lattices Noise Free 40
Lattices From Private to Public Key LWE 25
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
Lattices LWE Intro 10
Lattices LWE Background 5
CTF Archive ed25519 magic (ICC Athens) 0
CTF Archive 2020 (TETCTF) 0
CTF Archive Key recovery (DCTF) 0
Elliptic Curves Real Curve Crypto 200
Symmetric Ciphers Beatboxer 150
Hash Functions MDFlag 125
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Mathematics No Way Back Home 100
Misc LFSR Destroyer 250
Hash Functions Invariant 250
RSA Let's Decrypt Again 175
Diffie-Hellman The Matrix Revolutions 125
Elliptic Curves No Random, No Bias 120
Misc Bruce Schneier's Password 100
Misc Bruce Schneier's Password: Part 2 250
Elliptic Curves Edwards Goes Degenerate 100
Hash Functions Twin Keys 100
Mathematics Roll your Own 125
Mathematics Real Eisenstein 150
Hash Functions PriMeD5 100
Crypto on the Web RSA or HMAC? Part 2 100
Mathematics Ellipse Curve Cryptography 125
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Misc Trust Games 150
Elliptic Curves Double and Broken 50
Mathematics Unencryptable 125
Mathematics Cofactor Cofantasy 150
Misc Nothing Up My Sleeve 150
Misc Toshi's Treasure 150
Misc Armory 100
RSA Vote for Pedro 150
Misc Bit by Bit 100
Lattices Too Many Errors 100
Misc Jeff's LFSR 150
Misc L-Win 120
RSA Blinding Light 120
RSA Let's Decrypt 80
RSA Signing Server 60
RSA Bespoke Padding 100
RSA Null or Never 100
RSA RSA Backdoor Viability 175
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Everything is Still Big 100
RSA Endless Emails 150
RSA Infinite Descent 50
RSA Marin's Secrets 50
Misc Lo-Hi Card Game 120
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman The Matrix 75
Diffie-Hellman Script Kiddie 70
Hash Functions Mixed Up 120
Symmetric Ciphers Dancing Queen 120
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
Symmetric Ciphers Paper Plane 120
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers Triple DES 60
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Lazy CBC 60
RSA Everything is Big 70
RSA Crossed Wires 100
RSA Square Eyes 35
RSA Inferius Prime 30
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
Hash Functions MD0 80
Hash Functions No Difference 175
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Misc No Leaks 100
Misc Gotta Go Fast 40
Lattices Backpack Cryptography 120
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
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 Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Monoprime 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
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Mathematics Prime and Prejudice 200
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
Mathematics Modular Binomials 80
Mathematics Broken RSA 100
Mathematics Successive Powers 60
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Adrien's Signs 80
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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