Powershell crypto queries #322
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MathiasVP
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Jan 30, 2026
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MathiasVP
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This looks excellent, @chanel-y! 🚀
A few comments. I think the only one I'd really like to see fixed is the comment on CryptoAlgorithmObjectCreation. The others are mostly just stylistic suggestions which you can ignore if you feel like it.
powershell/ql/src/queries/security/cwe-327/ApprovedCipherMode.ql
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powershell/ql/lib/semmle/code/powershell/security/cryptography/CryptographyModule.qll
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powershell/ql/lib/semmle/code/powershell/security/cryptography/CryptographyModule.qll
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powershell/ql/src/queries/security/cwe-327/ApprovedCipherMode.ql
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...shell/ql/test/query-tests/security/cwe-327/WeakSymmetricAlgorithm/WeakSymmetricAlgorithm.ps1
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powershell/ql/src/queries/security/cwe-327/ApprovedCipherMode.qhelp
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Co-authored-by: Mathias Vorreiter Pedersen <[email protected]>
Co-authored-by: Mathias Vorreiter Pedersen <[email protected]>
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Powershell analogs to existing Microsoft Crypto csharp queries
WeakHashes: looking for usages of weak hashing algorithms like SHA1
SymmetricAlgorithm: looking for usages of weak symmetric algorithms like DES
ObsoleteKDFAlgorithm: looking for usages of the obsolete functions Rfc2898DeriveBytes.CryptDeriveKey and PasswordDeriveBytes.CryptDeriveKey
ApprovedCipherMode: looking for usages of weak block modes like ECB