RsaCtfTool/RsaCtfTool

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

7097 stars · 996 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A Python CLI tool that attacks weak RSA public keys to recover private keys and decrypt ciphertext, combining many factorization and lattice-based attacks. It is primarily aimed at CTF competitions and educational use.

Use cases

• recover a private key from a weak RSA public key
• decrypt a ciphertext file given only the public key
• run Wiener's attack on RSA with a small private exponent
• solve CTF challenges involving RSA encryption
• factor a semiprime modulus using multiple attack methods

When to choose

• you are solving a CTF challenge with a weak RSA key
• you want to try many known RSA attacks automatically from one tool
• you need to decrypt RSA-encrypted data when only the public key is available

When to avoid

• you need to break strong, properly generated RSA keys
• you need production-grade cryptographic libraries for encryption rather than attacks
• the modulus is a multiprime composite rather than a semiprime

Facets

cli-tool · maturity active

cryptography security cli security developer-tools python windows cli rsa ctf factorization private-key-recovery penetration-testing cryptography command-line linux macos docker

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markdown · JSON · MCP: product_card(name="RsaCtfTool/RsaCtfTool")