Integration Server 10.15 | MIME-S/MIME Developer’s Guide | Extracting Data from MIME and S/MIME Messages | Extracting the Payload from a Signed MIME Message | What Happens when the Signature is Processed?
 
What Happens when the Signature is Processed?
When processSignedData processes a signed message, it does the following:
*It verifies the digital signature using the signer’s public key.
*It compares the signer’s certificate chain to the certificates in Integration Server’s truststore to determine whether the credentials are authentic and trustworthy.
*It extracts the message from the S/MIME message stream, parses it, and puts it in the pipeline as a MIME object called mimeData.