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Solved Challenges

RSA RSA Backdoor Viability 175
RSA Vote for Pedro 150
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Diffie-Hellman Static Client 2 120
RSA Null or Never 100
RSA Bespoke Padding 100
Misc Lo-Hi Card Game 120
RSA Blinding Light 120
RSA Let's Decrypt 80
Post-Quantum From Private to Public Key LWE 25
Post-Quantum LWE Low Bits Message 20
Post-Quantum LWE High Bits Message 15
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
Diffie-Hellman Export-grade 100
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers CTRIME 70
Mathematics Cofactor Cofantasy 150
Misc No Leaks 100
Misc Gotta Go Fast 40
Crypto on the Web Sharks on the Wire 10
RSA Signing Server 60
General Encoding Challenge 40
Symmetric Ciphers Bringing It All Together 50
Post-Quantum LWE Intro 10
Post-Quantum LWE Background 5
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Crypto on the Web Secure Protocols 5
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
Hash Functions MD0 80
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Mathematics Unencryptable 125
Mathematics Roll your Own 125
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Parameter Injection 60
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Manyprime 40
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Passwords as Keys 50
Introduction Network Attacks 5
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Diffie-Hellman Starter 5 40
Mathematics No Way Back Home 100
RSA Marin's Secrets 50
RSA Infinite Descent 50
Elliptic Curves Background Reading 5
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA Modulus Inutilis 50
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
RSA RSA Starter 6 25
Mathematics Broken RSA 100
General Lemur XOR 40
General You either know, XOR you don't 30
Mathematics Successive Powers 60
Hash Functions Jack's Birthday Confusion 30
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
RSA Salty 20
Hash Functions Jack's Birthday Hash 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Mathematics Size and Basis 15
Mathematics Vectors 10
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 Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
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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