umesh

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Solved Challenges

Isogenies Twisted CSIDH Isogenies 70
Isogenies Secret Exponents 60
Isogenies Prime Power Isogenies 50
Isogenies Special Isogenies 30
Isogenies SIDH Key Exchange 80
Isogenies CSIDH Key Exchange 90
Isogenies What's My Kernel 70
Isogenies Abelian SIDH 90
Isogenies Dual Masters 90
Isogenies Meet me in the Claw 120
Isogenies A True Genus 175
Isogenies Breaking SIDH 250
Lattices Find the Lattice 100
Lattices Noise Free 40
Lattices Noise Cheap 90
Lattices Bounded Noise 50
Lattices Nativity 60
Lattices Missing Modulus 80
Lattices Too Many Errors 100
Crypto on the Web RSA or HMAC? Part 2 100
Elliptic Curves Curves and Logs 40
Elliptic Curves Efficient Exchange 50
Elliptic Curves Smooth Criminal 60
Elliptic Curves Exceptional Curves 100
Elliptic Curves Micro Transmissions 120
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Moving Problems 150
Elliptic Curves A Twisted Mind 80
Elliptic Curves An Exceptional Twisted Mind 125
Elliptic Curves Checkpoint 150
Elliptic Curves An Evil Twisted Mind 175
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves Double and Broken 50
Elliptic Curves Digestive 60
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves No Random, No Bias 120
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 2 120
Diffie-Hellman Script Kiddie 70
Diffie-Hellman The Matrix 75
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman The Matrix Revolutions 125
Hash Functions Mixed Up 120
Hash Functions Invariant 250
Hash Functions Merkle Trees 25
Hash Functions WOTS Up 75
Hash Functions WOTS Up 2 90
RSA Modulus Inutilis 50
RSA Everything is Big 70
RSA Crossed Wires 100
RSA Everything is Still Big 100
RSA Endless Emails 150
RSA Null or Never 100
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers The Good, The Pad, The Ugly 100
Symmetric Ciphers Pad Thai 80
Symmetric Ciphers Oracular Spectacular 150
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Paper Plane 120
Elliptic Curves Real Curve Crypto 200
CTF Archive Hamiltonicity (CryptoHack) 0
Mathematics Prime and Prejudice 200
Mathematics Ellipse Curve Cryptography 125
Mathematics No Way Back Home 100
General Favourite byte 20
General XOR Properties 15
Mathematics Broken RSA 100
General XOR Starter 10
General Extended GCD 20
General Greatest Common Divisor 15
General Modular Inverting 25
General Modular Arithmetic 1 20
General Modular Arithmetic 2 20
Mathematics Modular Binomials 80
Mathematics Quadratic Residues 25
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Finding Flags 2
Introduction Great Snakes 3

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