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symmetric-cipher-attacks

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Symmetric cipher attack playbook. Use when exploiting block cipher mode weaknesses (CBC padding oracle, ECB cut-and-paste, bit flipping), stream cipher key reuse, or meet-in-the-middle attacks.

When to use

• CBC padding oracle
• ECB cut-and-paste
• bit flipping
• stream cipher key reuse
• meet-in-the-middle attacks
• LFSR/LCG state recovery
• RC4 biases

When not to use

• RSA key protection
• HMAC or hash-based authentication
• Lattice crypto attacks

Skill page

Source