alsgn1_
Joined:
Rank: #8
Level: 1
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Trophy Case
Solved Challenges
| CTF Archive | Maybe Someday (Maybe Someday CTF) | 0 | |
| CTF Archive | OffTopic (ECSC 2024 (Italy)) | 0 | |
| CTF Archive | SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) | 0 | |
| CTF Archive | Authenticator (Firebird Internal CTF) | 0 | |
| CTF Archive | RSA Permutation (WACON) | 0 | |
| CTF Archive | Hyper512 (HITCON CTF) | 0 | |
| CTF Archive | Unbalanced (ICC Athens) | 0 | |
| CTF Archive | One Round Crypto (ECSC 2024 (Italy)) | 0 | |
| CTF Archive | Sign In Please, Again (HKCERT CTF) | 0 | |
| CTF Archive | ECLCG (HITCON CTF) | 0 | |
| CTF Archive | Maybe Someday (GoogleCTF) | 0 | |
| CTF Archive | What a Curve! (Breizh CTF) | 0 | |
| CTF Archive | Unevaluated (TETCTF) | 0 | |
| RSA | Fast Primes | 75 | |
| CTF Archive | unrandom DSA (HackTM CTF) | 0 | |
| CTF Archive | Greatest Common Multiple (CODEGATE CTF) | 0 | |
| CTF Archive | Dark Arts (CODEGATE CTF) | 0 | |
| CTF Archive | GLP420 (HackTM CTF) | 0 | |
| CTF Archive | Key recovery (DCTF) | 0 | |
| CTF Archive | Sign in Please (HKCERT CTF) | 0 | |
| CTF Archive | FaILProof Revenge (SekaiCTF) | 0 | |
| Isogenies | Breaking SIDH | 250 | |
| Isogenies | Meet me in the Claw | 120 | |
| CTF Archive | Calm Down (HKCERT CTF) | 0 | |
| CTF Archive | Signature (TSJ CTF) | 0 | |
| CTF Archive | broken oracle (HackTM CTF) | 0 | |
| CTF Archive | Functional (ICC Athens) | 0 | |
| CTF Archive | import numpy as MT (Zh3r0 CTF V2) | 0 | |
| CTF Archive | FaILProof (SekaiCTF) | 0 | |
| CTF Archive | Substitution Cipher III (DownUnderCTF) | 0 | |
| CTF Archive | Smithing contest (ECSC 2024 (Italy)) | 0 | |
| CTF Archive | Blind (ECSC 2023 (Norway)) | 0 | |
| ZKPs | Ticket Maestro | 200 | |
| CTF Archive | Ticket Maestro (CryptoHack) | 0 | |
| Hash Functions | PriMeD5 | 100 | |
| Hash Functions | Twin Keys | 100 | |
| Misc | Toshi's Treasure | 150 | |
| Isogenies | A True Genus | 175 | |
| Misc | LFSR Destroyer | 250 | |
| Elliptic Curves | Checkpoint | 150 | |
| CTF Archive | Quo vadis? (ECSC 2024 (Italy)) | 0 | |
| Crypto on the Web | Megalomaniac 3 | 120 | |
| Crypto on the Web | Megalomaniac 2 | 120 | |
| Crypto on the Web | Megalomaniac 1 | 100 | |
| Hash Functions | Invariant | 250 | |
| Diffie-Hellman | The Matrix Revolutions | 125 | |
| Diffie-Hellman | The Matrix Reloaded | 100 | |
| CTF Archive | pekobot (AIS3 Pre-Exam) | 0 | |
| CTF Archive | Probability (SEETF) | 0 | |
| CTF Archive | Put a ring on it (ECSC 2023 (Norway)) | 0 | |
| Hash Functions | WOTS Up 2 | 90 | |
| Hash Functions | WOTS Up | 75 | |
| CTF Archive | RSATogether (ECSC 2024 (Italy)) | 0 | |
| Symmetric Ciphers | Oh SNAP | 120 | |
| CTF Archive | Key Backup Service 1 (HKCERT CTF) | 0 | |
| CTF Archive | Key Backup Service 2 (HKCERT CTF) | 0 | |
| CTF Archive | Twist and shout (ECSC 2023 (Norway)) | 0 | |
| RSA | RSA Backdoor Viability | 175 | |
| CTF Archive | Sratslla SEA (HKCERT CTF) | 0 | |
| RSA | Let's Decrypt Again | 175 | |
| RSA | Everything is Still Big | 100 | |
| Mathematics | Prime and Prejudice | 200 | |
| Misc | Bruce Schneier's Password: Part 2 | 250 | |
| Mathematics | Real Eisenstein | 150 | |
| Mathematics | Cofactor Cofantasy | 150 | |
| Symmetric Ciphers | Oracular Spectacular | 150 | |
| CTF Archive | RSA Secret Sharing (WACON) | 0 | |
| ZKPs | Mister Saplins The Prover | 125 | |
| ZKPs | Let's Prove It Again | 175 | |
| ZKPs | Let's Prove It | 120 | |
| CTF Archive | Hide and seek (ECSC 2023 (Norway)) | 0 | |
| CTF Archive | 1337crypt v2 (DownUnderCTF) | 0 | |
| CTF Archive | Verilicious (Cyber Apocalypse 2025) | 0 | |
| CTF Archive | C0ll1d3r (Firebird Internal CTF) | 0 | |
| CTF Archive | ed25519 magic (ICC Athens) | 0 | |
| CTF Archive | Share (HITCON CTF) | 0 | |
| CTF Archive | Real Mersenne (Zh3r0 CTF V2) | 0 | |
| CTF Archive | Do you have good eyes? (Breizh CTF) | 0 | |
| CTF Archive | kaitenzushi (HackTM CTF) | 0 | |
| CTF Archive | Twist and Shout (Zh3r0 CTF V2) | 0 | |
| CTF Archive | Oofbleck (Firebird Internal CTF) | 0 | |
| CTF Archive | Tenet: The Plagarism (HKCERT CTF) | 0 | |
| CTF Archive | Cipher Mode Picker (HKCERT CTF) | 0 | |
| CTF Archive | 2020 (TETCTF) | 0 | |
| Symmetric Ciphers | Paper Plane | 120 | |
| CTF Archive | Unimplemented (TETCTF) | 0 | |
| CTF Archive | Chaos (Zh3r0 CTF V2) | 0 | |
| CTF Archive | 1n_jection (Zh3r0 CTF V2) | 0 | |
| CTF Archive | diffecient (SekaiCTF) | 0 | |
| CTF Archive | Tough decisions (ECSC 2023 (Norway)) | 0 | |
| CTF Archive | Sus (ImaginaryCTF) | 0 | |
| CTF Archive | Irish flan (ECSC 2023 (Norway)) | 0 | |
| CTF Archive | d-phi-enc (HackTM CTF) | 0 | |
| Misc | Nothing Up My Sleeve | 150 | |
| Elliptic Curves | Moving Problems | 150 | |
| Elliptic Curves | Micro Transmissions | 120 | |
| Elliptic Curves | A Twisted Mind | 80 | |
| Elliptic Curves | An Evil Twisted Mind | 175 | |
| Elliptic Curves | An Exceptional Twisted Mind | 125 | |
| Elliptic Curves | Real Curve Crypto | 200 | |
| Symmetric Ciphers | Beatboxer | 150 | |
| Symmetric Ciphers | Dancing Queen | 120 | |
| CTF Archive | OR Proof (CryptoHack) | 0 | |
| CTF Archive | Hamiltonicity 2 (CryptoHack) | 0 | |
| CTF Archive | Hamiltonicity (CryptoHack) | 0 | |
| CTF Archive | Fischlin's Transformation (CryptoHack) | 0 | |
| CTF Archive | Additional problems (CSC Belgium) | 0 | |
| ZKPs | Fischlin Transform | 180 | |
| ZKPs | Hamiltonicity 2 | 175 | |
| ZKPs | Hamiltonicity 1 | 100 | |
| ZKPs | OR Proof | 75 | |
| Hash Functions | Mixed Up | 120 | |
| Hash Functions | MDFlag | 125 | |
| Symmetric Ciphers | Stream of Consciousness | 80 | |
| General | Transparency | 50 | |
| Isogenies | Better than Linear | 85 | |
| Isogenies | CSIDH Key Exchange | 90 | |
| Isogenies | Abelian SIDH | 90 | |
| Elliptic Curves | Edwards Goes Degenerate | 100 | |
| Elliptic Curves | No Random, No Bias | 120 | |
| Elliptic Curves | Curveball | 100 | |
| Elliptic Curves | Elliptic Nodes | 150 | |
| Mathematics | Ellipse Curve Cryptography | 125 | |
| Mathematics | Roll your Own | 125 | |
| Mathematics | Unencryptable | 125 | |
| Lattices | Noise Cheap | 90 | |
| Symmetric Ciphers | CTRIME | 70 | |
| CTF Archive | Authentification 2 (Breizh CTF) | 0 | |
| CTF Archive | Authentification 1 (Breizh CTF) | 0 | |
| CTF Archive | 1337crypt (DownUnderCTF) | 0 | |
| CTF Archive | RRSSAA (ECSC 2023 (Norway)) | 0 | |
| CTF Archive | U-turn (Breizh CTF) | 0 | |
| Misc | RSA vs RNG | 150 | |
| Lattices | Too Many Errors | 100 | |
| Lattices | Missing Modulus | 80 | |
| RSA | Endless Emails | 150 | |
| RSA | Vote for Pedro | 150 | |
| RSA | Blinding Light | 120 | |
| Symmetric Ciphers | Forbidden Fruit | 150 | |
| Diffie-Hellman | Static Client 2 | 120 | |
| RSA | Null or Never | 100 | |
| Symmetric Ciphers | The Good, The Pad, The Ugly | 100 | |
| Symmetric Ciphers | Pad Thai | 80 | |
| Misc | Lo-Hi Card Game | 120 | |
| Misc | Trust Games | 150 | |
| Misc | Jeff's LFSR | 150 | |
| Misc | L-Win | 120 | |
| Symmetric Ciphers | Logon Zero | 80 | |
| Misc | Bruce Schneier's Password | 100 | |
| Misc | Bit by Bit | 100 | |
| Misc | Armory | 100 | |
| ZKPs | Mister Saplin's Preview | 80 | |
| ZKPs | Couples | 100 | |
| Elliptic Curves | Exceptional Curves | 100 | |
| Diffie-Hellman | Export-grade | 100 | |
| Diffie-Hellman | The Matrix | 75 | |
| Diffie-Hellman | Static Client | 100 | |
| RSA | Let's Decrypt | 80 | |
| RSA | Bespoke Padding | 100 | |
| RSA | Ron was Wrong, Whit is Right | 90 | |
| RSA | Crossed Wires | 100 | |
| RSA | Manyprime | 40 | |
| RSA | Inferius Prime | 30 | |
| Mathematics | No Way Back Home | 100 | |
| 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 | |
| Lattices | From Private to Public Key LWE | 25 | |
| ZKPs | Pairing-Based Cryptography | 50 | |
| Isogenies | Dual Masters | 90 | |
| Hash Functions | Merkle Trees | 25 | |
| Elliptic Curves | ProSign 3 | 100 | |
| Elliptic Curves | Digestive | 60 | |
| Elliptic Curves | Montgomery's Ladder | 40 | |
| Isogenies | André Encoding | 80 | |
| Isogenies | What's My Kernel | 70 | |
| Isogenies | DLOG on the Surface | 40 | |
| Lattices | Backpack Cryptography | 120 | |
| Lattices | Find the Lattice | 100 | |
| Elliptic Curves | Double and Broken | 50 | |
| Mathematics | Broken RSA | 100 | |
| CTF Archive | Leet Universe (ImaginaryCTF (Daily)) | 0 | |
| Misc | No Leaks | 100 | |
| Isogenies | Twisted CSIDH Isogenies | 70 | |
| Isogenies | Secret Exponents | 60 | |
| Isogenies | SIDH Key Exchange | 80 | |
| Lattices | Nativity | 60 | |
| Lattices | Bounded Noise | 50 | |
| Crypto on the Web | RSA or HMAC? Part 2 | 100 | |
| Hash Functions | MD0 | 80 | |
| Hash Functions | No Difference | 175 | |
| Hash Functions | Hash Stuffing | 50 | |
| Hash Functions | Collider | 50 | |
| Elliptic Curves | Smooth Criminal | 60 | |
| Diffie-Hellman | Additive | 70 | |
| Diffie-Hellman | Parameter Injection | 60 | |
| RSA | Marin's Secrets | 50 | |
| Symmetric Ciphers | ECB Oracle | 60 | |
| Symmetric Ciphers | Passwords as Keys | 50 | |
| ZKPs | Too Honest | 50 | |
| Lattices | Noise Free | 40 | |
| Diffie-Hellman | Script Kiddie | 70 | |
| RSA | Signing Server | 60 | |
| RSA | Everything is Big | 70 | |
| RSA | Infinite Descent | 50 | |
| RSA | Factoring | 15 | |
| Isogenies | Prime Power Isogenies | 50 | |
| Isogenies | Special Isogenies | 30 | |
| Isogenies | Composite Isogenies | 60 | |
| Isogenies | Three Isogenies | 35 | |
| Isogenies | Two Isogenies | 30 | |
| Isogenies | Montgomery Curves | 30 | |
| Isogenies | Where's the Supersingular Curve | 25 | |
| CTF Archive | A Joke Cipher (HKCERT CTF) | 0 | |
| CTF Archive | Lack of Entropy (Firebird Internal CTF) | 0 | |
| Isogenies | Introduction to Isogenies | 10 | |
| Elliptic Curves | Background Reading | 5 | |
| ZKPs | ZKP Introduction | 5 | |
| Crypto on the Web | Secure Protocols | 5 | |
| Crypto on the Web | JWT Sessions | 10 | |
| 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 | |
| Symmetric Ciphers | Bean Counter | 60 | |
| Symmetric Ciphers | Triple DES | 60 | |
| Symmetric Ciphers | Symmetry | 50 | |
| Symmetric Ciphers | Lazy CBC | 60 | |
| Symmetric Ciphers | Flipping Cookie | 60 | |
| Symmetric Ciphers | ECB CBC WTF | 55 | |
| Symmetric Ciphers | Modes of Operation Starter | 15 | |
| Symmetric Ciphers | Resisting Bruteforce | 10 | |
| Symmetric Ciphers | Keyed Permutations | 5 | |
| Lattices | LWE Intro | 10 | |
| Lattices | LWE Background | 5 | |
| Crypto on the Web | Token Appreciation | 5 | |
| Hash Functions | Jack's Birthday Confusion | 30 | |
| Hash Functions | Jack's Birthday Hash | 20 | |
| Misc | Gotta Go Fast | 40 | |
| ZKPs | Non-Interactive | 35 | |
| ZKPs | Honest Verifier Zero Knowledge | 30 | |
| ZKPs | Special Soundness | 25 | |
| ZKPs | Proofs of Knowledge | 20 | |
| Mathematics | Modular Binomials | 80 | |
| Mathematics | Adrien's Signs | 80 | |
| Mathematics | Modular Square Root | 35 | |
| Mathematics | Legendre Symbol | 35 | |
| Elliptic Curves | Curves and Logs | 40 | |
| Lattices | LWE Low Bits Message | 20 | |
| Lattices | LWE High Bits Message | 15 | |
| Diffie-Hellman | Deriving Symmetric Keys | 40 | |
| Diffie-Hellman | Computing Shared Secrets | 30 | |
| Diffie-Hellman | Computing Public Values | 25 | |
| RSA | Modulus Inutilis | 50 | |
| RSA | Salty | 20 | |
| RSA | Square Eyes | 35 | |
| RSA | Monoprime | 30 | |
| 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 | |
| Elliptic Curves | Efficient Exchange | 50 | |
| Elliptic Curves | Scalar Multiplication | 35 | |
| Elliptic Curves | Point Addition | 30 | |
| Elliptic Curves | Point Negation | 10 | |
| Isogenies | Image Point Arithmetic | 30 | |
| Isogenies | The j-invariant | 20 | |
| Lattices | Gaussian Reduction | 50 | |
| Lattices | Gram Schmidt | 30 | |
| Lattices | What's a Lattice? | 40 | |
| Lattices | Size and Basis | 15 | |
| Lattices | Vectors | 10 | |
| Diffie-Hellman | Generators of Groups | 20 | |
| Diffie-Hellman | Working with Fields | 10 | |
| Mathematics | Successive Powers | 60 | |
| Mathematics | Chinese Remainder Theorem | 40 | |
| Mathematics | Quadratic Residues | 25 | |
| RSA | RSA Signatures | 25 | |
| RSA | RSA Decryption | 20 | |
| RSA | Private Keys | 20 | |
| RSA | Euler's Totient | 20 | |
| RSA | Public Keys | 15 | |
| RSA | Modular Exponentiation | 10 | |
| General | Lemur XOR | 40 | |
| General | SSH Keys | 35 | |
| General | CERTainly not | 30 | |
| General | Privacy-Enhanced Mail? | 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 | Favourite byte | 20 | |
| General | XOR Properties | 15 | |
| General | XOR Starter | 10 | |
| General | Encoding Challenge | 40 | |
| General | Bytes and Big Integers | 10 | |
| General | You either know, XOR you don't | 30 | |
| General | Base64 | 10 | |
| General | Hex | 5 | |
| General | ASCII | 5 | |
| Introduction | Network Attacks | 5 | |
| Introduction | Great Snakes | 3 | |
| Introduction | Finding Flags | 2 |
