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32 lines
1 KiB
Markdown
32 lines
1 KiB
Markdown
# RsaCtfTool
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> RSA attack tool for CTF challenges - recover private keys from weak public keys and/or decrypt data.
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> More information: <https://github.com/RsaCtfTool/RsaCtfTool>.
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- Recover a private key from a public key file:
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`RsaCtfTool.py --publickey {{path/to/key.pub}} --private`
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- Decrypt a file using a public key:
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`RsaCtfTool.py --publickey {{path/to/key.pub}} --decryptfile {{path/to/ciphered_file}}`
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- Decrypt a specific ciphertext string:
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`RsaCtfTool.py --publickey {{path/to/key.pub}} --decrypt "{{ciphertext}}"`
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- Dump RSA key components (e.g., modulus, exponent) from a key file:
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`RsaCtfTool.py --dumpkey --key {{path/to/key.pub}}`
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- Run a specific attack (e.g., Fermat factorization) to recover the private key:
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`RsaCtfTool.py --publickey {{path/to/key.pub}} --private --attack fermat`
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- Generate a public key from modulus (n) and exponent (e):
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`RsaCtfTool.py --createpub -n {{modulus}} -e {{exponent}}`
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- Attempt all available attacks to recover the private key:
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`RsaCtfTool.py --publickey {{path/to/key.pub}} --private --attack all`
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