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Solved Challenges

Crypto on the Web JSON in JSON 40
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
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers Passwords as Keys 50
Misc Toshi's Treasure 150
Misc Armory 100
Mathematics Broken RSA 100
Mathematics Modular Square Root 35
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
General SSH Keys 35
General Encoding Challenge 40
Hash Functions PriMeD5 100
Hash Functions MD0 80
RSA Let's Decrypt Again 175
Symmetric Ciphers Dancing Queen 120
Hash Functions Hash Stuffing 50
Diffie-Hellman The Matrix 75
Post-Quantum Too Many Errors 100
Misc Bit by Bit 100
Mathematics Adrien's Signs 80
Misc Nothing Up My Sleeve 150
Misc Lo-Hi Card Game 120
Misc Trust Games 150
Mathematics Prime and Prejudice 200
Symmetric Ciphers Oh SNAP 120
Mathematics Cofactor Cofantasy 150
Hash Functions Mixed Up 120
Misc Bruce Schneier's Password 100
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
General Transparency 50
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Lemur XOR 40
Hash Functions Collider 50
RSA Vote for Pedro 150
Mathematics Successive Powers 60
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
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Misc Jeff's LFSR 150
RSA Null or Never 100
RSA Blinding Light 120
RSA Let's Decrypt 80
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
RSA Signing Server 60
RSA Bespoke Padding 100
RSA Infinite Descent 50
RSA Square Eyes 35
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
Misc No Leaks 100
Misc Gotta Go Fast 40
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
Elliptic Curves No Random, No Bias 120
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
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

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