Weak encryption: Insufficient key size¶
ID: cs/insufficient-key-size
Kind: problem
Security severity: 7.5
Severity: warning
Precision: high
Tags:
- security
- external/cwe/cwe-326
Query suites:
- csharp-code-scanning.qls
- csharp-security-extended.qls
- csharp-security-and-quality.qls
Click to see the query in the CodeQL repository
This rule finds uses of encryption algorithms with too small a key size. Encryption algorithms are vulnerable to brute force attack when too small a key size is used.
Recommendation¶
The key should be at least 2048-bit long when using RSA encryption, and 128-bit long when using symmetric encryption.