Oujda

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Solved Challenges

Misc Bruce Schneier's Password 100
Misc Gotta Go Fast 40
Crypto on the Web Megalomaniac 1 100
Diffie-Hellman Static Client 2 120
Crypto on the Web Megalomaniac 3 120
Crypto on the Web Megalomaniac 2 120
Post-Quantum Too Many Errors 100
Post-Quantum Noise Cheap 90
Post-Quantum Missing Modulus 80
Elliptic Curves Micro Transmissions 120
RSA Let's Decrypt 80
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Elliptic Curves Montgomery's Ladder 40
RSA Null or Never 100
RSA Bespoke Padding 100
Crypto on the Web Authenticated Handshake 40
Elliptic Curves Curveball 100
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
RSA Signing Server 60
RSA Fast Primes 75
Mathematics Unencryptable 125
Mathematics No Way Back Home 100
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Mathematics Backpack Cryptography 120
Mathematics Prime and Prejudice 200
Mathematics Find the Lattice 100
General CERTainly not 30
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
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
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
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
General Lemur XOR 40
General Encoding Challenge 40
RSA Marin's Secrets 50
RSA Infinite Descent 50
General Privacy-Enhanced Mail? 25
Introduction Network Attacks 5
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
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
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
Elliptic Curves Background Reading 5
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
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
CTF Archive d-phi-enc (HackTM CTF) 0
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
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
Post-Quantum Nativity 60
Post-Quantum Noise Free 40
Post-Quantum From Private to Public Key LWE 25
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 Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Broken RSA 100
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Mathematics Successive Powers 60
Introduction Great Snakes 3
Introduction Finding Flags 2
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10

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