Claus Ibsen created CAMEL-26201:
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             Summary: camel-crypto - with stream caching off, signing reads and 
closes a stream body: the next step gets an empty body
                 Key: CAMEL-26201
                 URL: https://issues.apache.org/jira/browse/CAMEL-26201
             Project: Camel
          Issue Type: Bug
          Components:  camel-crypto
            Reporter: Claus Ibsen
             Fix For: 4.24.0


Found while adding the catalog body types of crypto (CAMEL-24961, PR #28416).

h4. 1. A stream body is consumed by sign and verify

{{DigitalSignatureProcessor.calculateSignature}} (main 2a465aa4814c, line 41 to 
53), used by sign and verify, reads the body as an InputStream and closes it. 
With stream caching off, the body is a plain stream that cannot be read again, 
so the next step of the route gets an empty body. Checked on 4.24.0-SNAPSHOT 
with in-memory key pairs and stream caching turned off.

Proposed: cache the stream (or reset it when it is a StreamCache) and put it 
back as the body after reading.

_Claude Code on behalf of davsclaus_



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