[NIFI-7122] Refactor existing KDF implementations to use SecureHasher interface

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.11.1
• Fix Version/s: 1.12.0
• Component/s: Core Framework, Security
• Labels: hashing kdf refactor security
• Epic Link: Improve secure hasher architecture
• Assignee: Margot Tien
• Reporter: Andy LoPresto
• Created: 10/Feb/20 23:19
• Updated: 08/Apr/21 13:06
• Resolved: 24/Jul/20 20:05

Description

The existing KDF implementations (bcrypt, scrypt, and PBKDF2) in the *CipherProvider classes should be refactored to provide algorithm-specific *SecureHasher implementations and then have the hashing logic delegated from the respective cipher provider objects to the hasher.

Issue Links

• depends upon: NIFI-7125 Extend SecureHasher interface to provide implementation-specific "full hash output" string representation
• fixes: NIFI-1467 Provide Bcrypt salt generation code
• is depended upon by: NIFI-7397 Detect encryption metadata attributes on incoming flowfile and use for decryption
• is required by: NIFI-7324 Introduce controller service for KDFs
• links to: GitHub Pull Request #4228
• links to: GitHub Pull Request #4421

Sub-Tasks

• Change library implementation of Bcrypt: Resolved
• Introduce Argon2 Cipher Provider: Resolved
• Introduce controller service for KDFs: Resolved
• Refactor EncryptContent to allow KDFs for raw algorithms: Resolved