defeatedkitten

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Submitted Solutions

Let's Prove It Again 1
Let's Prove It 2

Solved Challenges

Isogenies Breaking SIDH 250
Lattices Bounded Noise 50
Elliptic Curves Real Curve Crypto 200
Elliptic Curves An Exceptional Twisted Mind 125
Misc Toshi's Treasure 150
Misc Bruce Schneier's Password: Part 2 250
Elliptic Curves An Evil Twisted Mind 175
Elliptic Curves A Twisted Mind 80
ZKPs Let's Prove It 120
ZKPs Let's Prove It Again 175
Elliptic Curves Checkpoint 150
Hash Functions WOTS Up 2 90
Hash Functions WOTS Up 75
Hash Functions Merkle Trees 25
Symmetric Ciphers Oracular Spectacular 150
Symmetric Ciphers The Good, The Pad, The Ugly 100
Symmetric Ciphers Pad Thai 80
ZKPs Pairing-Based Cryptography 50
ZKPs Ticket Maestro 200
CTF Archive Ticket Maestro (CryptoHack) 0
CTF Archive Fischlin's Transformation (CryptoHack) 0
ZKPs Fischlin Transform 180
ZKPs Hamiltonicity 1 100
CTF Archive Hamiltonicity (CryptoHack) 0
ZKPs Non-Interactive 35
ZKPs Too Honest 50
ZKPs Honest Verifier Zero Knowledge 30
ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs ZKP Introduction 5
CTF Archive Blind (ECSC 2023 (Norway)) 0
Misc RSA vs RNG 150
Misc LFSR Destroyer 250
Hash Functions Jack's Birthday Hash 20
Hash Functions Invariant 250
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Edwards Goes Degenerate 100
Crypto on the Web Megalomaniac 3 120
Crypto on the Web Megalomaniac 1 100
Misc Trust Games 150
Crypto on the Web Decrypting TLS 1.3 35
Hash Functions Twin Keys 100
RSA Let's Decrypt Again 175
Diffie-Hellman The Matrix Revolutions 125
Symmetric Ciphers Dancing Queen 120
Elliptic Curves No Random, No Bias 120
Lattices Nativity 60
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Forbidden Fruit 150
Hash Functions Mixed Up 120
Hash Functions No Difference 175
Hash Functions MDFlag 125
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web RSA or HMAC? Part 2 100
Misc Nothing Up My Sleeve 150
Hash Functions PriMeD5 100
Symmetric Ciphers Beatboxer 150
Symmetric Ciphers Paper Plane 120
RSA Let's Decrypt 80
Mathematics Real Eisenstein 150
Elliptic Curves ProSign 3 100
Misc Jeff's LFSR 150
Mathematics Ellipse Curve Cryptography 125
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 Background 5
Mathematics Roll your Own 125
Diffie-Hellman The Matrix Reloaded 100
Elliptic Curves Micro Transmissions 120
Misc Armory 100
Misc Bruce Schneier's Password 100
Misc Bit by Bit 100
Mathematics Cofactor Cofantasy 150
RSA Vote for Pedro 150
Diffie-Hellman The Matrix 75
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Misc L-Win 120
Symmetric Ciphers Bringing It All Together 50
Lattices Too Many Errors 100
Misc Lo-Hi Card Game 120
Mathematics Unencryptable 125
Hash Functions Hash Stuffing 50
Lattices Backpack Cryptography 120
Elliptic Curves Curveball 100
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
Hash Functions MD0 80
Elliptic Curves Moving Problems 150
Elliptic Curves Exceptional Curves 100
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
RSA Ron was Wrong, Whit is Right 90
Symmetric Ciphers Stream of Consciousness 80
Misc Gotta Go Fast 40
Misc No Leaks 100
Crypto on the Web RSA or HMAC? 35
Elliptic Curves Point Negation 10
RSA Bespoke Padding 100
Symmetric Ciphers Diffusion through Permutation 30
Crypto on the Web JSON in JSON 40
Lattices Find the Lattice 100
Lattices Gram Schmidt 30
Mathematics Successive Powers 60
Mathematics Prime and Prejudice 200
Hash Functions Collider 50
Hash Functions Jack's Birthday Confusion 30
Lattices Gaussian Reduction 50
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Broken RSA 100
Lattices What's a Lattice? 40
Mathematics Modular Square Root 35
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
RSA Blinding Light 120
RSA RSA Backdoor Viability 175
RSA Fast Primes 75
RSA Endless Emails 150
RSA RSA Signatures 25
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
RSA Signing Server 60
RSA Null or Never 100
RSA Crossed Wires 100
Symmetric Ciphers Bean Counter 60
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Elliptic Curves Background Reading 5
Symmetric Ciphers Confusion through Substitution 25
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
General SSH Keys 35
General Encoding Challenge 40
General Transparency 50
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Mathematics Chinese Remainder Theorem 40
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 You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
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
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Still Big 100
RSA Everything is Big 70
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 Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
General Lemur XOR 40
Symmetric Ciphers Keyed Permutations 5
Lattices Size and Basis 15
Lattices Vectors 10

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