David Handermann created NIFI-8251:
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             Summary: Add Encrypt and Decrypt PGP Processors and Services
                 Key: NIFI-8251
                 URL: https://issues.apache.org/jira/browse/NIFI-8251
             Project: Apache NiFi
          Issue Type: New Feature
          Components: Extensions
    Affects Versions: 1.13.0
            Reporter: David Handermann
            Assignee: David Handermann


The purpose of this issue is to create new Processors and Controller Services 
to perform encrypt and decrypt functions according to the OpenPGP specification 
defined in [RFC 4880|https://tools.ietf.org/html/rfc4880]. This functionality 
is implemented in the `EncryptContent` Processor, but the current approach is 
difficult to configure and troubleshoot in some cases.

The new Controller Services should encapsulate management of keys and keyrings 
to improve performance and provide better error handling. New Controller 
Services would also support building additional Processors for signing and 
verifying PGP messages as requested in NIFI-7322. Separating encrypt and 
decrypt content functions into distinct Processors will provide a clearer 
distinction between the properties necessary for configuration.

The implementation of these Processors and Controller Services should address 
the issues described in the following issues:
 - NIFI-7396 Add encryption metadata attributes
 - NIFI-6708 Support DSA and ElGamal keys
 - NIFI-5346 Specify PGP key as property
 - NIFI-5335 Support multiple keys in a PGP keyring
 - NIFI-2983 Support decryption of signed messages
 - NIFI-1964 Support keyring or individual key for encryption or decryption



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