r4sti

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Submitted Solutions

Ticket Maestro (CryptoHack) 0
Ticket Maestro 1
Hamiltonicity 1 0
Fischlin Transform 2
Pairing-Based Cryptography 13
Too Many Errors 6
The Matrix 8
SSH Keys 20
Curveball 1
Bean Counter 4
Everything is Still Big 4

Solved Challenges

ZKPs Ticket Maestro 200
CTF Archive Ticket Maestro (CryptoHack) 0
ZKPs Hamiltonicity 1 100
CTF Archive Hamiltonicity (CryptoHack) 0
Lattices Bounded Noise 50
Elliptic Curves An Exceptional Twisted Mind 125
Isogenies Introduction to Isogenies 10
Elliptic Curves An Evil Twisted Mind 175
Elliptic Curves A Twisted Mind 80
Isogenies The j-invariant 20
ZKPs Let's Prove It 120
CTF Archive Fischlin's Transformation (CryptoHack) 0
ZKPs Fischlin Transform 180
ZKPs Let's Prove It Again 175
ZKPs OR Proof 75
CTF Archive OR Proof (CryptoHack) 0
ZKPs Non-Interactive 35
ZKPs Honest Verifier Zero Knowledge 30
ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs Too Honest 50
ZKPs Couples 100
Elliptic Curves Checkpoint 150
ZKPs Mister Saplins The Prover 125
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
ZKPs ZKP Introduction 5
Hash Functions Merkle Trees 25
ZKPs Pairing-Based Cryptography 50
Hash Functions WOTS Up 2 90
Hash Functions WOTS Up 75
Hash Functions Invariant 250
Symmetric Ciphers Paper Plane 120
Misc Bruce Schneier's Password 100
Hash Functions MDFlag 125
Crypto on the Web Megalomaniac 2 120
Lattices Noise Cheap 90
Crypto on the Web Megalomaniac 3 120
Crypto on the Web Megalomaniac 1 100
Hash Functions Twin Keys 100
Symmetric Ciphers Oh SNAP 120
Lattices Missing Modulus 80
Elliptic Curves Double and Broken 50
Lattices Nativity 60
Crypto on the Web Authenticated Handshake 40
Lattices Noise Free 40
Lattices From Private to Public Key LWE 25
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
Elliptic Curves Digestive 60
CTF Archive Oofbleck (Firebird Internal CTF) 0
Lattices LWE Intro 10
Lattices LWE Background 5
CTF Archive d-phi-enc (HackTM CTF) 0
Diffie-Hellman The Matrix Revolutions 125
Misc Trust Games 150
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Misc RSA vs RNG 150
Symmetric Ciphers Beatboxer 150
Hash Functions Mixed Up 120
Mathematics Ellipse Curve Cryptography 125
Mathematics Prime and Prejudice 200
Mathematics Roll your Own 125
Mathematics Real Eisenstein 150
RSA Let's Decrypt Again 175
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
Elliptic Curves No Random, No Bias 120
Elliptic Curves Edwards Goes Degenerate 100
Misc Jeff's LFSR 150
Lattices Too Many Errors 100
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Mathematics Cofactor Cofantasy 150
Diffie-Hellman The Matrix Reloaded 100
Lattices Backpack Cryptography 120
Misc Toshi's Treasure 150
Misc L-Win 120
Misc Nothing Up My Sleeve 150
RSA Vote for Pedro 150
Hash Functions No Difference 175
Hash Functions PriMeD5 100
Elliptic Curves Moving Problems 150
Symmetric Ciphers Forbidden Fruit 150
Diffie-Hellman The Matrix 75
Lattices Find the Lattice 100
Crypto on the Web RSA or HMAC? Part 2 100
Misc Lo-Hi Card Game 120
Symmetric Ciphers Dancing Queen 120
Hash Functions Hash Stuffing 50
Lattices Gaussian Reduction 50
Misc Armory 100
RSA Blinding Light 120
Hash Functions MD0 80
Misc Bit by Bit 100
RSA Bespoke Padding 100
RSA Null or Never 100
Elliptic Curves Montgomery's Ladder 40
General SSH Keys 35
Elliptic Curves ProSign 3 100
Diffie-Hellman Static Client 2 120
Symmetric Ciphers Triple DES 60
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Curveball 100
Misc No Leaks 100
Elliptic Curves Exceptional Curves 100
Elliptic Curves Micro Transmissions 120
Elliptic Curves Smooth Criminal 60
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
Diffie-Hellman Script Kiddie 70
Elliptic Curves Background Reading 5
Mathematics Broken RSA 100
Mathematics Modular Binomials 80
RSA Let's Decrypt 80
RSA RSA Backdoor Viability 175
RSA Signing Server 60
RSA Fast Primes 75
Crypto on the Web RSA or HMAC? 35
Hash Functions Collider 50
Symmetric Ciphers Logon Zero 80
Crypto on the Web JSON in JSON 40
Misc Gotta Go Fast 40
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers CTRIME 70
RSA Ron was Wrong, Whit is Right 90
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 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 Successive Powers 60
Diffie-Hellman Static Client 100
Crypto on the Web JWT Secrets 25
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
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
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
General Lemur XOR 40
General CERTainly not 30
General Transparency 50
General Privacy-Enhanced Mail? 25
RSA Marin's Secrets 50
RSA Infinite Descent 50
General Favourite byte 20
General XOR Properties 15
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers ECB Oracle 60
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
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Signatures 25
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
RSA Crossed Wires 100
RSA Monoprime 30
RSA Manyprime 40
RSA Square Eyes 35
Mathematics Modular Square Root 35
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
Mathematics Unencryptable 125
General Encoding Challenge 40
General XOR Starter 10
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
Mathematics Quadratic Residues 25
General You either know, XOR you don't 30
General Bytes and Big Integers 10
General Base64 10
Introduction Network Attacks 5
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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