Everyone,
I'm revisiting the ANSI TR-34-2019 document and in B.9.2.1 2 Pass Key Token I see a PEM formatted block. The manual then parses that PEM into DER version of the key block. \
Seems like I've had it in my head the wrong way this last year. For some reason I was thinking that the TR-31 header would be replicated with most of its form as a prefix to the TR-34 block. And to me that meant a character version of the keyblock. DER appears to be the only format for the TR-34 keyblock in the ANSI and ICSF manuals.
Sorry to bother everyone.
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Mark Vollmer
Developer, but does everything.
CV Systems, LLC
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Original Message:
Sent: Thu August 21, 2025 06:03 PM
From: Mark Vollmer
Subject: TR-34 keyblock output formats?
I've gotten through my first CSNDT34D API call with success. But I have a new surprise. For some reason, all the documentation that I've read about TR-34 shows ASCII representations of keyblock. And after the ICSF call, I have a DER formatted keyblock. My partner seems to expect the ASCII version.
Does IBM ICSF support creation of these keyblocks in ASCII (or even EBCDIC char) form? I can't find anything in the APG that suggests anything other than DER format.
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Mark Vollmer
Developer, but does everything.
CV Systems, LLC
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