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Solved Challenges

Crypto on the Web Decrypting TLS 1.3 35
Post-Quantum From Private to Public Key LWE 25
RSA RSA Backdoor Viability 175
RSA Fast Primes 75
Post-Quantum LWE Low Bits Message 20
Post-Quantum LWE High Bits Message 15
Post-Quantum LWE Intro 10
Post-Quantum LWE Background 5
Mathematics Prime and Prejudice 200
Crypto on the Web Decrypting TLS 1.2 30
RSA Everything is Still Big 100
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Dancing Queen 120
Mathematics Real Eisenstein 150
Mathematics Backpack Cryptography 120
Misc Jeff's LFSR 150
Misc Toshi's Treasure 150
Misc Armory 100
Misc L-Win 120
Misc Lo-Hi Card Game 120
Post-Quantum Too Many Errors 100
Misc Bruce Schneier's Password 100
Misc Bit by Bit 100
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves No Random, No Bias 120
Elliptic Curves Curveball 100
Elliptic Curves ProSign 3 100
Elliptic Curves Double and Broken 50
Mathematics Ellipse Curve Cryptography 125
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Hash Functions MDFlag 125
Hash Functions Twin Keys 100
Hash Functions MD0 80
Hash Functions Mixed Up 120
Hash Functions PriMeD5 100
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Mathematics Find the Lattice 100
Mathematics Unencryptable 125
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
Mathematics Gaussian Reduction 50
Mathematics Modular Binomials 80
Mathematics Successive Powers 60
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Bean Counter 60
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Static Client 2 120
Crypto on the Web RSA or HMAC? Part 2 100
Crypto on the Web Saying Hello 20
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
Diffie-Hellman Static Client 100
Diffie-Hellman Additive 70
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
RSA Bespoke Padding 100
RSA Null or Never 100
RSA Let's Decrypt 80
RSA Blinding Light 120
RSA Signing Server 60
RSA Infinite Descent 50
RSA Ron was Wrong, Whit is Right 90
RSA Endless Emails 150
RSA Everything is Big 70
RSA Crossed Wires 100
RSA Marin's Secrets 50
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Mathematics Adrien's Signs 80
Mathematics Gram Schmidt 30
RSA Inferius Prime 30
RSA RSA Starter 6 25
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Diffie-Hellman Diffie-Hellman Starter 3 20
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
General Encoding Challenge 40
Misc No Leaks 100
Crypto on the Web Secure Protocols 5
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Misc Gotta Go Fast 40
Mathematics Chinese Remainder Theorem 40
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
RSA Factoring 15
Symmetric Ciphers Resisting Bruteforce 10
Mathematics What's a Lattice? 40
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
Mathematics Vectors 10
Mathematics Size and Basis 15
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Lemur XOR 40
Symmetric Ciphers Keyed Permutations 5
Mathematics Quadratic Residues 25
General Extended GCD 20
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Greatest Common Divisor 15
Introduction Network Attacks 5
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 Great Snakes 3
Introduction Finding Flags 2

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