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https://issues.apache.org/jira/browse/NIFI-8251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17329386#comment-17329386
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ASF subversion and git services commented on NIFI-8251:
-------------------------------------------------------

Commit 92bdc23adbe867c93f6e43c6665e84108d743fb2 in nifi's branch 
refs/heads/main from David Handermann
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=92bdc23 ]

NIFI-8251 Added EncryptContentPGP and DecryptContentPGP Processors

- Added PGPPrivateKeyService and PGPPublicKeyService interfaces with standard 
implementations
- NIFI-7396 EncryptContentPGP writes encryption metadata attributes
- NIFI-6708 Controller Services support ElGamal Public and Private Keys
- NIFI-5346 Controller Services support Keyring Files and ASCII Key properties
- NIFI-5335 Controller Services support multiple public or private keys from 
keyrings
- NIFI-2983 DecryptContentPGP finds and decrypts Encrypted Data Packets 
regardless of signing
- NIFI-1694 Controller Services support individual key files or keyrings

NIFI-8251 Refactored Public Key ID Property to Public Key Search

NIFI-8251 Corrected handling of multiple Encrypted Data packets in 
DecryptContentPGP

- Added unit tests for encryption and decryption with both password-based and 
public key
- Added PGP NAR dependencies to nifi-assembly

Signed-off-by: Nathan Gough <thena...@gmail.com>

This closes #4842.


> 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
>            Priority: Major
>              Labels: encryption, gpg, pgp, security
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> 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-1694 Support keyring or individual key for encryption or decryption



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