bjornmorten

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Solved Challenges

Crypto on the Web JSON in JSON 40
Elliptic Curves Moving Problems 150
Mathematics Cofactor Cofantasy 150
Hash Functions Jack's Birthday Confusion 30
Symmetric Ciphers Logon Zero 80
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
Mathematics Unencryptable 125
Mathematics Find the Lattice 100
General Transparency 50
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Paper Plane 120
RSA Bespoke Padding 100
RSA Vote for Pedro 150
Post-Quantum Too Many Errors 100
Misc Lo-Hi Card Game 120
Mathematics Gaussian Reduction 50
Misc Toshi's Treasure 150
Mathematics Broken RSA 100
Symmetric Ciphers Triple DES 60
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Diffie-Hellman Static Client 100
Diffie-Hellman Static Client 2 120
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Hash Functions MD0 80
Mathematics Size and Basis 15
Mathematics Vectors 10
Hash Functions Collider 50
RSA Endless Emails 150
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
Misc Bit by Bit 100
Diffie-Hellman Export-grade 100
Misc Armory 100
Mathematics Adrien's Signs 80
Diffie-Hellman Additive 70
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Bringing It All Together 50
RSA Blinding Light 120
RSA Everything is Still Big 100
RSA Crossed Wires 100
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Mathematics Modular Square Root 35
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Misc No Leaks 100
Elliptic Curves Efficient Exchange 50
Symmetric Ciphers CTRIME 70
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
RSA Signing Server 60
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers ECB CBC WTF 55
Mathematics Legendre Symbol 35
RSA Null or Never 100
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
Symmetric Ciphers Symmetry 50
RSA Everything is Big 70
RSA Manyprime 40
RSA Square Eyes 35
Symmetric Ciphers Flipping Cookie 60
Mathematics Modular Binomials 80
Mathematics Successive Powers 60
Diffie-Hellman Script Kiddie 70
Symmetric Ciphers ECB Oracle 60
Elliptic Curves Background Reading 5
Mathematics Quadratic Residues 25
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 CERTainly not 30
General Privacy-Enhanced Mail? 25
RSA Modulus Inutilis 50
RSA Salty 20
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Starter 6 25
General XOR Properties 15
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Misc Gotta Go Fast 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 Chinese Remainder Theorem 40
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General Lemur XOR 40
General You either know, XOR you don't 30
General Favourite byte 20
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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