drdoctor

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Solved Challenges

CTF Archive 1337crypt 0
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Smooth Criminal 60
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
Diffie-Hellman The Matrix 75
Hash Functions Hash Stuffing 50
Diffie-Hellman Static Client 2 120
Diffie-Hellman Export-grade 100
RSA Let's Decrypt Again 175
Crypto on the Web RSA or HMAC? Part 2 100
Crypto on the Web JSON in JSON 40
Crypto on the Web RSA or HMAC? 35
Mathematics Roll your Own 125
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Stream of Consciousness 80
Mathematics Gaussian Reduction 50
Mathematics Ellipse Curve Cryptography 125
RSA Ron was Wrong, Whit is Right 90
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Misc Bruce Schneier's Password 100
Crypto on the Web JWT Secrets 25
RSA Vote for Pedro 150
RSA Endless Emails 150
RSA Bespoke Padding 100
Misc Armory 100
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Mathematics Cofactor Cofantasy 150
Misc No Leaks 100
Misc Gotta Go Fast 40
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
RSA Blinding Light 120
RSA Null or Never 100
Hash Functions Collider 50
RSA RSA Backdoor Viability 175
RSA Let's Decrypt 80
RSA Signing Server 60
General SSH Keys 35
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
Mathematics Broken RSA 100
Mathematics No Way Back Home 100
Mathematics Unencryptable 125
Mathematics Modular Binomials 80
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
General Transparency 50
General You either know, XOR you don't 30
General Lemur XOR 40
Mathematics Adrien's Signs 80
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Mathematics Successive Powers 60
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Symmetric Ciphers Modes of Operation Starter 15
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
RSA Everything is Still Big 100
RSA Crossed Wires 100
General CERTainly not 30
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA RSA Starter 6 25
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
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
General Privacy-Enhanced Mail? 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 Encoding Challenge 40
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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