New Challenges

This page contains lists of recent and most difficult challenges. To play the challenges, please go to the challenges section.
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Recently Released
CategoryChallengePointsSolves
Mathematics Size and Basis 15 305 solves
Mathematics Gaussian Reduction 50 182 solves
Mathematics Find the Lattice 60 92 solves
Mathematics Vectors 10 318 solves
Mathematics Backpack Cryptography 150 58 solves
Mathematics Gram Schmidt 30 199 solves
Mathematics What's a Lattice? 40 217 solves
Mathematics Unencryptable 100 69 solves
Misc Too Many Errors 100 53 solves
Block Ciphers Forbidden Fruit 150 51 solves
Misc Collider 50 115 solves
Misc MD0 80 69 solves
Block Ciphers Triple DES 60 85 solves
Mathematics Modular Square Root 35 408 solves
Mathematics Broken RSA 100 156 solves
Mathematics Real Eisenstein 150 56 solves
Block Ciphers Keyed Permutations 5 580 solves
Block Ciphers Structure of AES 15 413 solves
Block Ciphers Round Keys 20 385 solves
Block Ciphers Resisting Bruteforce 10 529 solves
Block Ciphers Confusion through Substitution 25 330 solves
Block Ciphers Bringing It All Together 50 254 solves
Block Ciphers Diffusion through Permutation 30 300 solves
RSA Bespoke Padding 100 96 solves
Misc Nothing Up My Sleeve 150 54 solves
Elliptic Curves Moving Problems 150 70 solves
Block Ciphers Paper Plane 120 96 solves
Mathematics Prime and Prejudice 200 81 solves
General XOR Properties 15 1418 solves
Misc Toshi's Treasure 150 88 solves
Mathematics Legendre Symbol 35 544 solves
Mathematics Quadratic Residues 25 816 solves
RSA Crossed Wires 100 251 solves
Elliptic Curves Elliptic Nodes 150 80 solves
Diffie-Hellman Static Client 2 150 98 solves
Misc Bit by Bit 120 98 solves
Misc Lo-Hi Card Game 120 104 solves
Elliptic Curves Micro Transmissions 120 85 solves
Elliptic Curves Curveball 100 98 solves
RSA Fast Primes 75 179 solves
Block Ciphers Block Cipher Mode Starter 15 686 solves
Mathematics Adrien's Signs 60 344 solves
Elliptic Curves Scalar Multiplication 35 256 solves
Elliptic Curves Curves and Logs 40 241 solves
Elliptic Curves Efficient Exchange 50 219 solves
Elliptic Curves Smooth Criminal 60 167 solves
Elliptic Curves Exceptional Curves 100 117 solves
Elliptic Curves ProSign 3 100 92 solves
Elliptic Curves Point Negation 10 286 solves
Elliptic Curves Point Addition 30 262 solves
 


Least Solved
CategoryChallengePointsSolves
Block Ciphers Forbidden Fruit 150 51 solves
Misc Too Many Errors 100 53 solves
Misc Nothing Up My Sleeve 150 54 solves
Mathematics Real Eisenstein 150 56 solves
Mathematics Backpack Cryptography 150 58 solves
Mathematics Unencryptable 100 69 solves
Misc MD0 80 69 solves
Elliptic Curves Moving Problems 150 70 solves
Elliptic Curves Elliptic Nodes 150 80 solves
Mathematics Prime and Prejudice 200 81 solves
Elliptic Curves Micro Transmissions 120 85 solves
Block Ciphers Triple DES 60 85 solves
Misc Toshi's Treasure 150 88 solves
Mathematics Find the Lattice 60 92 solves
Elliptic Curves ProSign 3 100 92 solves
Block Ciphers Paper Plane 120 96 solves
RSA Bespoke Padding 100 96 solves
Misc Bit by Bit 120 98 solves
Elliptic Curves Curveball 100 98 solves
Diffie-Hellman Static Client 2 150 98 solves
Misc Lo-Hi Card Game 120 104 solves
Misc Collider 50 115 solves
Elliptic Curves Exceptional Curves 100 117 solves
RSA Vote for Pedro 150 123 solves
Misc Armory 100 128 solves

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