R4GN4R

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Submitted Solutions

Adrien's Signs 7
Endless Emails -1
No Leaks 1
Gotta Go Fast 0
Modulus Inutilis 6
Curveball 1
Size and Basis 0
Efficient Exchange 1
Curves and Logs 0
Scalar Multiplication 0
Point Addition 0
Transparency 12
Quadratic Residues 1
Square Eyes 16
Round Keys 1
Symmetry 4
Lazy CBC 0
Flipping Cookie -2
Everything is Big 0
CERTainly not 3
Salty 8
Manyprime 2
XOR Properties 0
Monoprime 6
Inferius Prime 7
Privacy-Enhanced Mail? 42
Factoring 24
RSA Decryption 6
Private Keys 27
Euler's Totient 11
Passwords as Keys 10
Chinese Remainder Theorem 10
Modular Inverting 2
Modular Arithmetic 2 0
Extended GCD 1
Greatest Common Divisor 1
Encoding Challenge 5
Lemur XOR 4

Solved Challenges

RSA Bespoke Padding 100
Lattices LWE Background 5
Elliptic Curves Moving Problems 150
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Mathematics No Way Back Home 100
RSA Let's Decrypt 80
Elliptic Curves Micro Transmissions 120
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Mathematics Broken RSA 100
Elliptic Curves ProSign 3 100
Elliptic Curves Montgomery's Ladder 40
Mathematics Cofactor Cofantasy 150
Crypto on the Web RSA or HMAC? Part 2 100
Misc Armory 100
Hash Functions MD0 80
RSA Blinding Light 120
Hash Functions Hash Stuffing 50
RSA Vote for Pedro 150
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Symmetric Ciphers Stream of Consciousness 80
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
General SSH Keys 35
Symmetric Ciphers Triple DES 60
Diffie-Hellman Static Client 2 120
RSA Ron was Wrong, Whit is Right 90
Diffie-Hellman Additive 70
Diffie-Hellman Script Kiddie 70
Crypto on the Web JSON in JSON 40
Crypto on the Web RSA or HMAC? 35
Hash Functions Collider 50
RSA Signing Server 60
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Bean Counter 60
Mathematics Adrien's Signs 80
Mathematics Modular Binomials 80
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Mathematics Successive Powers 60
Mathematics Unencryptable 125
RSA Crossed Wires 100
RSA RSA Backdoor Viability 175
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
Misc No Leaks 100
Misc Gotta Go Fast 40
RSA Modulus Inutilis 50
Elliptic Curves Curveball 100
Lattices Size and Basis 15
Lattices Vectors 10
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
Elliptic Curves Exceptional Curves 100
Mathematics Legendre Symbol 35
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Bringing It All Together 50
Mathematics Modular Square Root 35
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Symmetric Ciphers Keyed Permutations 5
Symmetric Ciphers Resisting Bruteforce 10
Elliptic Curves Scalar Multiplication 35
General Transparency 50
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Mathematics Quadratic Residues 25
Diffie-Hellman Parameter Injection 60
RSA RSA Signatures 25
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
RSA Square Eyes 35
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
RSA Everything is Big 70
General You either know, XOR you don't 30
Symmetric Ciphers ECB Oracle 60
RSA Public Keys 15
General CERTainly not 30
RSA Salty 20
RSA Manyprime 40
General XOR Properties 15
RSA Monoprime 30
RSA Inferius Prime 30
General Privacy-Enhanced Mail? 25
RSA Factoring 15
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
RSA Modular Exponentiation 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 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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