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https://issues.apache.org/jira/browse/NIFI-5335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17329382#comment-17329382
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ASF subversion and git services commented on NIFI-5335:
-------------------------------------------------------

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 <[email protected]>

This closes #4842.


> PGP processor cannot handle multiple passworded keys in a pgp keyring.
> ----------------------------------------------------------------------
>
>                 Key: NIFI-5335
>                 URL: https://issues.apache.org/jira/browse/NIFI-5335
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Configuration Management
>    Affects Versions: 1.5.0
>         Environment: RHEL 
>            Reporter: Bill SAndman
>            Assignee: David Handermann
>            Priority: Major
>              Labels: encryption, pgp, security
>         Attachments: EncryptContent.JPG
>
>
> The Encrypt Content processor can handle only one passworded PGP Secret key 
> on a given keyring.
> To decrypt files from multiple data sources with different passworded PGP 
> Secret Keys, we are forced to create a separate key ring for each data 
> source, containing a single passworded PGP Secret Key.
> It would be optimal to be able to point the decryption processor at a single 
> NIFI user keyring that had multiple data source Secret Keys, each passworded. 
> We would then be able to pass either the SEC ID (eg; 1024D/671D6CAF or the 
> UID (eg. dunnhumby - SMG - Prod) and the password for the given Secret Key.
> Ideally the attached image would also include a Private Key Identifier to 
> distinguish which jey on the ring to use, that would match the Private 
> Keyring Passphrase.
>  



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