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Submitted Solutions

Image Point Arithmetic 0
Real Eisenstein 1
Toshi's Treasure 0

Solved Challenges

Symmetric Ciphers Pad Thai 80
Hash Functions Merkle Trees 25
Isogenies DLOG on the Surface 40
ZKPs Non-Interactive 35
ZKPs Honest Verifier Zero Knowledge 30
ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs ZKP Introduction 5
Isogenies SIDH Key Exchange 80
Isogenies Composite Isogenies 60
Isogenies Three Isogenies 35
Isogenies Two Isogenies 30
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 Double and Broken 50
Mathematics Ellipse Curve Cryptography 125
Crypto on the Web Authenticated Handshake 40
Mathematics Real Eisenstein 150
Hash Functions Twin Keys 100
Elliptic Curves Moving Problems 150
Elliptic Curves Digestive 60
Elliptic Curves ProSign 3 100
Misc Toshi's Treasure 150
Diffie-Hellman The Matrix 75
RSA Vote for Pedro 150
Mathematics Cofactor Cofantasy 150
Lattices Find the Lattice 100
Lattices Backpack Cryptography 120
Crypto on the Web RSA or HMAC? Part 2 100
Diffie-Hellman Static Client 2 120
Hash Functions No Difference 175
Crypto on the Web Decrypting TLS 1.3 35
Symmetric Ciphers Paper Plane 120
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers Stream of Consciousness 80
Hash Functions PriMeD5 100
Symmetric Ciphers CTRIME 70
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
Misc RSA vs RNG 150
Misc Lo-Hi Card Game 120
RSA Blinding Light 120
RSA Let's Decrypt 80
RSA RSA Backdoor Viability 175
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
Hash Functions Mixed Up 120
Misc Armory 100
Lattices Too Many Errors 100
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
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web Saying Hello 20
Mathematics No Way Back Home 100
Elliptic Curves Exceptional Curves 100
Elliptic Curves Curveball 100
Elliptic Curves Smooth Criminal 60
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Bean Counter 60
Hash Functions Hash Stuffing 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Mathematics Unencryptable 125
Mathematics Prime and Prejudice 200
Mathematics Broken RSA 100
General Encoding Challenge 40
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Crypto on the Web RSA or HMAC? 35
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Passwords as Keys 50
Mathematics Modular Binomials 80
Misc Bruce Schneier's Password 100
RSA Signing Server 60
RSA Null or Never 100
RSA Bespoke Padding 100
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Manyprime 40
Mathematics Successive Powers 60
Hash Functions Collider 50
Hash Functions MD0 80
Mathematics Adrien's Signs 80
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Diffie-Hellman Script Kiddie 70
General Transparency 50
General SSH Keys 35
General CERTainly not 30
Lattices LWE Background 5
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Diffie-Hellman Additive 70
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Lattices Vectors 10
Lattices Size and Basis 15
Misc No Leaks 100
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Crypto on the Web TLS Handshake 15
Crypto on the Web JSON in JSON 40
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Misc Gotta Go Fast 40
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Elliptic Curves Point Addition 30
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Mathematics Quadratic Residues 25
General Lemur XOR 40
Symmetric Ciphers Modes of Operation Starter 15
General Privacy-Enhanced Mail? 25
Mathematics Chinese Remainder Theorem 40
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Modular Inverting 25
General You either know, XOR you don't 30
General Favourite byte 20
Diffie-Hellman Working with Fields 10
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Crypto on the Web Token Appreciation 5
Crypto on the Web JWT Sessions 10
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Modulus Inutilis 50
RSA Salty 20
RSA Square Eyes 35
RSA Monoprime 30
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
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15

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