Hermes1320

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Solved Challenges

CTF Archive Sign in Please (HKCERT CTF) 0
CTF Archive Calm Down (HKCERT CTF) 0
CTF Archive pekobot (AIS3 Pre-Exam) 0
CTF Archive Signature (TSJ CTF) 0
CTF Archive Substitution Cipher III (DownUnderCTF) 0
CTF Archive 1337crypt v2 (DownUnderCTF) 0
CTF Archive 1337crypt (DownUnderCTF) 0
CTF Archive RSA Permutation (WACON) 0
CTF Archive RSA Secret Sharing (WACON) 0
CTF Archive Dark Arts (CODEGATE CTF) 0
CTF Archive Key recovery (DCTF) 0
CTF Archive Probability (SEETF) 0
CTF Archive Functional (ICC Athens) 0
CTF Archive Unbalanced (ICC Athens) 0
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) 0
CTF Archive ed25519 magic (ICC Athens) 0
CTF Archive 2020 (TETCTF) 0
CTF Archive Unimplemented (TETCTF) 0
CTF Archive Unevaluated (TETCTF) 0
Elliptic Curves Real Curve Crypto 200
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Hash Functions MDFlag 125
Symmetric Ciphers Beatboxer 150
Mathematics No Way Back Home 100
Misc LFSR Destroyer 250
Misc Bruce Schneier's Password: Part 2 250
Diffie-Hellman The Matrix Revolutions 125
Crypto on the Web RSA or HMAC? Part 2 100
Symmetric Ciphers Forbidden Fruit 150
Hash Functions Twin Keys 100
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Dancing Queen 120
Elliptic Curves Double and Broken 50
Elliptic Curves Montgomery's Ladder 40
Diffie-Hellman The Matrix Reloaded 100
Hash Functions Hash Stuffing 50
General SSH Keys 35
Diffie-Hellman The Matrix 75
Mathematics Roll your Own 125
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Misc Bruce Schneier's Password 100
Lattices Too Many Errors 100
Misc Toshi's Treasure 150
Misc Armory 100
Misc Bit by Bit 100
Misc Jeff's LFSR 150
Misc L-Win 120
Hash Functions Invariant 250
Hash Functions No Difference 175
Hash Functions Mixed Up 120
Hash Functions PriMeD5 100
Hash Functions MD0 80
Hash Functions Collider 50
Misc Trust Games 150
Misc Nothing Up My Sleeve 150
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JSON in JSON 40
Elliptic Curves ProSign 3 100
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves No Random, No Bias 120
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Static Client 2 120
Diffie-Hellman Additive 70
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Computing Shared Secrets 30
Misc Lo-Hi Card Game 120
RSA Blinding Light 120
Misc No Leaks 100
Misc Gotta Go Fast 40
Elliptic Curves Curveball 100
Mathematics Prime and Prejudice 200
RSA Let's Decrypt Again 175
RSA Let's Decrypt 80
RSA RSA Backdoor Viability 175
Elliptic Curves Moving Problems 150
Elliptic Curves Exceptional Curves 100
General Encoding Challenge 40
General Transparency 50
RSA Bespoke Padding 100
RSA Signing Server 60
RSA Vote for Pedro 150
Mathematics Cofactor Cofantasy 150
Introduction Network Attacks 5
Lattices Backpack Cryptography 120
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
Elliptic Curves Smooth Criminal 60
Mathematics Ellipse Curve Cryptography 125
RSA Endless Emails 150
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
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Paper Plane 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
General CERTainly not 30
Lattices Gram Schmidt 30
Lattices Find the Lattice 100
RSA Null or Never 100
Lattices Gaussian Reduction 50
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
RSA RSA Signatures 25
Mathematics Real Eisenstein 150
Elliptic Curves Background Reading 5
Mathematics Unencryptable 125
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Mathematics Broken RSA 100
Diffie-Hellman Working with Fields 10
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Lattices What's a Lattice? 40
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
General Privacy-Enhanced Mail? 25
General Extended GCD 20
General Greatest Common Divisor 15
Mathematics Chinese Remainder Theorem 40
Mathematics Quadratic Residues 25
General Modular Arithmetic 1 20
General Modular Arithmetic 2 20
General Modular Inverting 25
General You either know, XOR you don't 30
General Lemur XOR 40
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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