OWASP A04: Cryptographic Failures (2) — Password Storage, Data Protection and Secret Management
How exactly does ASP.NET Core Identity's PasswordHasher store a password? We decode the hash header to see PBKDF2-HMAC-SHA512 with 100,000 iterations, move to OWASP's 220,000 with SuccessRehashNeeded, build a signed, time-limited share link with the Data Protection API, and keep secrets out of the code with user-secrets and environment variables.
6 Nov 2026
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9 min
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4
