David Handermann created NIFI-11437:
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Summary: Improve EncryptContentPGP Content Type Detection
Key: NIFI-11437
URL: https://issues.apache.org/jira/browse/NIFI-11437
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions, Security
Reporter: David Handermann
Assignee: David Handermann
Fix For: 1.latest, 2.latest
The {{EncryptContentPGP}} Processor reads the initial bytes of incoming files
to determine whether a file is an OpenPGP message. This initial read is
necessary to support flows with {{SignContentPGP}} creating signed OpenPGP
messages prior to encryption.
The current implementation uses an InputStreamCallback with
ProcessSession.read() to run content type detection. Instead a separate read
callback, the StreamCallback for ProcessSession.write() can be modified to use
a buffer with {{{}PushbackInputStream{}}}. This will avoid reading the initial
bytes multiple times.
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