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Submitted Solutions

Marin's Secrets 0
Infinite Descent 0
Crossed Wires 0
Everything is Big 0
Modulus Inutilis 0
Salty 0
Manyprime 0
Square Eyes 0
Monoprime 0
Inferius Prime 0
Factoring 0
RSA Starter 6 0
RSA Starter 5 0
RSA Starter 4 0
RSA Starter 3 0
RSA Starter 2 0
Bean Counter 0
Symmetry 0
Flipping Cookie 0
ECB Oracle 0
ECB CBC WTF 0
Modes of Operation Starter 0
Forbidden Fruit 0
Digestive 0
Passwords as Keys 0
Signing Server 0
MD0 0
Lazy CBC 0
CTRIME 0
Triple DES -1
Logon Zero 0

Solved Challenges

CTF Archive WOTS Up 2 (ECSC 2023 (Norway)) 0
CTF Archive WOTS Up (ECSC 2023 (Norway)) 0
CTF Archive Twist and shout (ECSC 2023 (Norway)) 0
CTF Archive Tough decisions (ECSC 2023 (Norway)) 0
CTF Archive RRSSAA (ECSC 2023 (Norway)) 0
CTF Archive Put a ring on it (ECSC 2023 (Norway)) 0
CTF Archive Irish flan (ECSC 2023 (Norway)) 0
CTF Archive Hide and seek (ECSC 2023 (Norway)) 0
CTF Archive Blind (ECSC 2023 (Norway)) 0
CTF Archive GLP420 (HackTM CTF) 0
CTF Archive What a Curve! (Breizh CTF) 0
CTF Archive broken oracle (HackTM CTF) 0
CTF Archive d-phi-enc (HackTM CTF) 0
CTF Archive kaitenzushi (HackTM CTF) 0
CTF Archive unrandom DSA (HackTM CTF) 0
CTF Archive Authenticator (Firebird Internal CTF) 0
CTF Archive C0ll1d3r (Firebird Internal CTF) 0
CTF Archive Dark Arts (CODEGATE CTF) 0
CTF Archive FaILProof Revenge (SekaiCTF) 0
CTF Archive FaILProof (SekaiCTF) 0
CTF Archive Key recovery (DCTF) 0
CTF Archive Lack of Entropy (Firebird Internal CTF) 0
CTF Archive Maybe Someday (Maybe Someday CTF) 0
CTF Archive Probability (SEETF) 0
CTF Archive RSA Permutation (WACON) 0
CTF Archive RSA Secret Sharing (WACON) 0
CTF Archive Signature (TSJ CTF) 0
CTF Archive Functional (ICC Athens) 0
CTF Archive Unbalanced (ICC Athens) 0
CTF Archive 1337crypt v2 (DownUnderCTF) 0
CTF Archive 1n_jection (Zh3r0 CTF V2) 0
CTF Archive Oofbleck (Firebird Internal CTF) 0
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) 0
CTF Archive Substitution Cipher III (DownUnderCTF) 0
CTF Archive 2020 (TETCTF) 0
CTF Archive pekobot (AIS3 Pre-Exam) 0
CTF Archive ed25519 magic (ICC Athens) 0
CTF Archive Chaos (Zh3r0 CTF V2) 0
CTF Archive Real Mersenne (Zh3r0 CTF V2) 0
CTF Archive diffecient (SekaiCTF) 0
CTF Archive A Joke Cipher (HKCERT CTF) 0
CTF Archive Cipher Mode Picker (HKCERT CTF) 0
CTF Archive Key Backup Service 1 (HKCERT CTF) 0
CTF Archive Key Backup Service 2 (HKCERT CTF) 0
CTF Archive Sign In Please, Again (HKCERT CTF) 0
CTF Archive Sratslla SEA (HKCERT CTF) 0
CTF Archive Tenet: The Plagarism (HKCERT CTF) 0
CTF Archive Twist and Shout (Zh3r0 CTF V2) 0
CTF Archive Unevaluated (TETCTF) 0
CTF Archive Unimplemented (TETCTF) 0
CTF Archive import numpy as MT (Zh3r0 CTF V2) 0
CTF Archive 1337crypt (DownUnderCTF) 0
CTF Archive Calm Down (HKCERT CTF) 0
CTF Archive Sign in Please (HKCERT CTF) 0
Misc L-Win 120
Misc Jeff's LFSR 150
Post-Quantum Missing Modulus 80
Post-Quantum From Private to Public Key LWE 25
Symmetric Ciphers Forbidden Fruit 150
Hash Functions Jack's Birthday Confusion 30
Mathematics Gram Schmidt 30
Mathematics What's a Lattice? 40
Mathematics Gaussian Reduction 50
Mathematics Cofactor Cofantasy 150
Mathematics Real Eisenstein 150
Mathematics Find the Lattice 100
Mathematics Backpack Cryptography 120
Mathematics Roll your Own 125
Post-Quantum Nativity 60
Post-Quantum Noise Free 40
Post-Quantum Too Many Errors 100
Mathematics Prime and Prejudice 200
Mathematics Unencryptable 125
Mathematics Ellipse Curve Cryptography 125
Mathematics No Way Back Home 100
Post-Quantum LWE Low Bits Message 20
Post-Quantum LWE High Bits Message 15
Misc Armory 100
Misc Toshi's Treasure 150
Misc Trust Games 150
Misc Bit by Bit 100
Misc RSA vs RNG 150
Misc Nothing Up My Sleeve 150
Hash Functions Mixed Up 120
Symmetric Ciphers Oh SNAP 120
Hash Functions MDFlag 125
Hash Functions No Difference 175
Hash Functions Twin Keys 100
Misc Lo-Hi Card Game 120
Hash Functions PriMeD5 100
Misc No Leaks 100
Mathematics Vectors 10
Mathematics Size and Basis 15
Diffie-Hellman The Matrix Reloaded 100
Elliptic Curves No Random, No Bias 120
Elliptic Curves Digestive 60
Diffie-Hellman The Matrix 75
Diffie-Hellman Script Kiddie 70
Elliptic Curves Elliptic Nodes 150
Diffie-Hellman Static Client 100
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 2 120
RSA Vote for Pedro 150
RSA Let's Decrypt Again 175
RSA Null or Never 100
RSA Bespoke Padding 100
RSA Endless Emails 150
RSA Crossed Wires 100
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Blinding Light 120
RSA Let's Decrypt 80
Hash Functions Hash Stuffing 50
Mathematics Successive Powers 60
Mathematics Broken RSA 100
Crypto on the Web RSA or HMAC? Part 2 100
RSA Signing Server 60
RSA RSA Backdoor Viability 175
RSA Everything is Still Big 100
RSA Everything is Big 70
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Square Eyes 35
RSA Inferius Prime 30
Post-Quantum LWE Intro 10
Post-Quantum LWE Background 5
Misc Bruce Schneier's Password 100
Hash Functions MD0 80
Misc Gotta Go Fast 40
Crypto on the Web Authenticated Handshake 40
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
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
Crypto on the Web JSON in JSON 40
Crypto on the Web RSA or HMAC? 35
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 Paper Plane 120
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
Hash Functions Collider 50
Hash Functions Jack's Birthday Hash 20
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Lemur XOR 40
General Encoding Challenge 40
Introduction Network Attacks 5
Elliptic Curves Montgomery's Ladder 40
Elliptic Curves Double and Broken 50
Elliptic Curves Moving Problems 150
Elliptic Curves ProSign 3 100
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves Curveball 100
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Monoprime 30
RSA Factoring 15
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 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
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General You either know, XOR you don't 30
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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