marc_t0k

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Website: https://marc.damie.eu

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Submitted Solutions

Montgomery's Ladder 2
Bespoke Padding 0

Solved Challenges

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 d-phi-enc (HackTM CTF) 0
Elliptic Curves Edwards Goes Degenerate 100
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
Misc Trust Games 150
Misc Bruce Schneier's Password 100
RSA Let's Decrypt 80
Lattices Backpack Cryptography 120
Mathematics Ellipse Curve Cryptography 125
Elliptic Curves Micro Transmissions 120
Diffie-Hellman Static Client 2 120
Hash Functions Invariant 250
Hash Functions PriMeD5 100
Symmetric Ciphers Dancing Queen 120
Mathematics Prime and Prejudice 200
Symmetric Ciphers Oh SNAP 120
Misc Toshi's Treasure 150
Symmetric Ciphers Forbidden Fruit 150
Elliptic Curves Exceptional Curves 100
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Moving Problems 150
Mathematics Unencryptable 125
Lattices Too Many Errors 100
Misc Bit by Bit 100
Misc L-Win 120
Diffie-Hellman The Matrix 75
Hash Functions Mixed Up 120
Lattices Find the Lattice 100
Misc Lo-Hi Card Game 120
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Double and Broken 50
Elliptic Curves Smooth Criminal 60
Symmetric Ciphers Paper Plane 120
Elliptic Curves Montgomery's Ladder 40
Misc Armory 100
Symmetric Ciphers Logon Zero 80
Hash Functions No Difference 175
RSA Bespoke Padding 100
Diffie-Hellman Script Kiddie 70
Hash Functions Twin Keys 100
Hash Functions Hash Stuffing 50
RSA Null or Never 100
RSA Ron was Wrong, Whit is Right 90
RSA Vote for Pedro 150
RSA Blinding Light 120
Hash Functions MD0 80
Symmetric Ciphers Triple DES 60
Symmetric Ciphers CTRIME 70
Hash Functions Collider 50
RSA Endless Emails 150
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 Additive 70
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Bean Counter 60
RSA RSA Backdoor Viability 175
RSA Fast Primes 75
RSA Infinite Descent 50
Elliptic Curves Background Reading 5
Symmetric Ciphers Flipping Cookie 60
Crypto on the Web RSA or HMAC? Part 2 100
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Symmetry 50
Crypto on the Web JSON in JSON 40
Symmetric Ciphers ECB CBC WTF 55
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
Misc No Leaks 100
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
RSA Signing Server 60
Misc Gotta Go Fast 40
Symmetric Ciphers Passwords as Keys 50
RSA Marin's Secrets 50
Lattices Gaussian Reduction 50
Mathematics Broken RSA 100
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Diffie-Hellman Static Client 100
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 Resisting Bruteforce 10
Mathematics Modular Binomials 80
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Symmetric Ciphers Keyed Permutations 5
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
RSA Crossed Wires 100
RSA Everything is Still Big 100
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Square Eyes 35
RSA Manyprime 40
RSA Inferius Prime 30
RSA Monoprime 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
Mathematics Successive Powers 60
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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