voydstack

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Solved Challenges

Block Ciphers Lazy CBC 60
Block Ciphers Flipping Cookie 60
Block Ciphers Confusion through Substitution 25
Block Ciphers Round Keys 20
Block Ciphers ECB CBC WTF 55
Block Ciphers ECB Oracle 60
Block Ciphers Passwords as Keys 50
Block Ciphers Structure of AES 15
Block Ciphers Resisting Bruteforce 10
Block Ciphers Keyed Permutations 5
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA RSA Starter 6 25
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JSON in JSON 40
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
General Transparency 50
Diffie-Hellman Diffie-Hellman Starter 1 10
RSA Factoring 15
Block Ciphers Block Cipher Mode Starter 15
General CERTainly not 30
General Privacy-Enhanced Mail? 25
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 XOR Properties 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
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
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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