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Solved Challenges

ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs ZKP Introduction 5
Elliptic Curves Checkpoint 150
Symmetric Ciphers CTRIME 70
Hash Functions Merkle Trees 25
Elliptic Curves A Twisted Mind 80
RSA Let's Decrypt 80
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
Hash Functions Mixed Up 120
Mathematics No Way Back Home 100
RSA Fast Primes 75
RSA Everything is Still Big 100
RSA Endless Emails 150
RSA Ron was Wrong, Whit is Right 90
Hash Functions PriMeD5 100
Hash Functions Twin Keys 100
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
Elliptic Curves Digestive 60
Symmetric Ciphers Bean Counter 60
Mathematics Cofactor Cofantasy 150
Symmetric Ciphers ECB Oracle 60
Lattices Noise Free 40
Lattices LWE Low Bits Message 20
Lattices From Private to Public Key LWE 25
Lattices LWE High Bits Message 15
Lattices LWE Intro 10
Lattices LWE Background 5
Crypto on the Web Secure Protocols 5
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Micro Transmissions 120
RSA Crossed Wires 100
Misc Bit by Bit 100
Misc L-Win 120
Misc No Leaks 100
Misc Gotta Go Fast 40
Symmetric Ciphers Flipping Cookie 60
Lattices Find the Lattice 100
Diffie-Hellman The Matrix 75
Elliptic Curves Elliptic Nodes 150
Mathematics Modular Binomials 80
Mathematics Broken RSA 100
Mathematics Unencryptable 125
RSA Signing Server 60
Hash Functions No Difference 175
Hash Functions Hash Stuffing 50
Mathematics Successive Powers 60
Lattices Gaussian Reduction 50
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Double and Broken 50
RSA Marin's Secrets 50
RSA Infinite Descent 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
General SSH Keys 35
Symmetric Ciphers Dancing Queen 120
Hash Functions MD0 80
Hash Functions Collider 50
Crypto on the Web JSON in JSON 40
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
Elliptic Curves Exceptional Curves 100
Misc Jeff's LFSR 150
Elliptic Curves Smooth Criminal 60
Symmetric Ciphers Passwords as Keys 50
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 Moving Problems 150
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
General Encoding Challenge 40
General Transparency 50
General Lemur XOR 40
RSA Modulus Inutilis 50
RSA Manyprime 40
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
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
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Elliptic Curves Edwards Goes Degenerate 100
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
RSA Blinding Light 120
RSA RSA Backdoor Viability 175
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Export-grade 100
Symmetric Ciphers Stream of Consciousness 80
Diffie-Hellman Additive 70
Misc Armory 100
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Triple DES 60
RSA Everything is Big 70
RSA Salty 20
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers ECB CBC WTF 55
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Bytes and Big Integers 10
General XOR Properties 15
General Extended GCD 20
General Greatest Common Divisor 15
General Modular Inverting 25
Elliptic Curves Efficient Exchange 50
Mathematics Adrien's Signs 80
General Hex 5
General ASCII 5
General Base64 10
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
General Modular Arithmetic 1 20
General Modular Arithmetic 2 20
General XOR Starter 10
General Favourite byte 20
General You either know, XOR you don't 30
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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