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 15 205 solves
Mathematics Gaussian Reduction 50 126 solves
Mathematics Find the Lattice 60 54 solves
Mathematics Vectors 10 210 solves
Mathematics Backpack Cryptography 150 35 solves
Mathematics Gram Schmidt 30 131 solves
Mathematics What's a Lattice? 40 147 solves
Mathematics Unencryptable 100 52 solves
Misc Too Many Errors 100 35 solves
Block Ciphers Forbidden Fruit 150 32 solves
Misc Collider 50 81 solves
Misc MD0 80 48 solves
Block Ciphers Triple DES 60 58 solves
Mathematics Modular Square Root 35 318 solves
Mathematics Broken RSA 100 122 solves
Mathematics Real Eisenstein 150 47 solves
Block Ciphers Keyed Permutations 5 473 solves
Block Ciphers Structure of AES 15 341 solves
Block Ciphers Round Keys 20 318 solves
Block Ciphers Resisting Bruteforce 10 432 solves
Block Ciphers Confusion through Substitution 25 270 solves
Block Ciphers Bringing It All Together 50 215 solves
Block Ciphers Diffusion through Permutation 30 249 solves
RSA Bespoke Padding 100 74 solves
Misc Nothing Up My Sleeve 150 44 solves
Elliptic Curves Moving Problems 150 51 solves
Block Ciphers Paper Plane 120 75 solves
Mathematics Prime and Prejudice 200 69 solves
General XOR Properties 15 1203 solves
Misc Toshi's Treasure 150 69 solves
Mathematics Legendre Symbol 35 447 solves
Mathematics Quadratic Residues 25 675 solves
RSA Crossed Wires 100 205 solves
Elliptic Curves Elliptic Nodes 150 63 solves
Diffie-Hellman Static Client 2 150 83 solves
Misc Bit by Bit 120 82 solves
Misc Lo-Hi Card Game 120 86 solves
Elliptic Curves Micro Transmissions 120 71 solves
Elliptic Curves Curveball 100 82 solves
RSA Fast Primes 75 150 solves
Block Ciphers Block Cipher Mode Starter 15 632 solves
Mathematics Adrien's Signs 60 307 solves
Elliptic Curves Scalar Multiplication 35 215 solves
Elliptic Curves Curves and Logs 40 202 solves
Elliptic Curves Efficient Exchange 50 181 solves
Elliptic Curves Smooth Criminal 60 132 solves
Elliptic Curves Exceptional Curves 100 95 solves
Elliptic Curves ProSign 3 100 77 solves
Elliptic Curves Point Negation 10 237 solves
Elliptic Curves Point Addition 30 220 solves
 


Least Solved
CategoryChallengePointsSolves
Block Ciphers Forbidden Fruit 150 32 solves
Misc Too Many Errors 100 35 solves
Mathematics Backpack Cryptography 150 35 solves
Misc Nothing Up My Sleeve 150 44 solves
Mathematics Real Eisenstein 150 47 solves
Misc MD0 80 48 solves
Elliptic Curves Moving Problems 150 51 solves
Mathematics Unencryptable 100 52 solves
Mathematics Find the Lattice 60 54 solves
Block Ciphers Triple DES 60 58 solves
Elliptic Curves Elliptic Nodes 150 63 solves
Mathematics Prime and Prejudice 200 69 solves
Misc Toshi's Treasure 150 69 solves
Elliptic Curves Micro Transmissions 120 71 solves
RSA Bespoke Padding 100 74 solves
Block Ciphers Paper Plane 120 75 solves
Elliptic Curves ProSign 3 100 77 solves
Misc Collider 50 81 solves
Misc Bit by Bit 120 82 solves
Elliptic Curves Curveball 100 82 solves
Diffie-Hellman Static Client 2 150 83 solves
Misc Lo-Hi Card Game 120 86 solves
Elliptic Curves Exceptional Curves 100 95 solves
RSA Vote for Pedro 150 102 solves
Misc Armory 100 106 solves

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