[openssl-users] Unable to decrypt CMS object encrypted with EC prime256v1 certificate

Stephan Mühlstrasser stm at pdflib.com
Thu Jul 7 07:46:25 UTC 2016

Am 06.07.16 um 23:35 schrieb Dr. Stephen Henson:
> ...
>> Yes, the other version cannot decrypt the CMS object generated by
>> OpenSSL. I did some tests with Bouncy Castle, and it also cannot
>> decrypt the CMS object.
>> What might be interesting is that on the other hand Windows
>> CryptoAPI is able to decrypt the CMS object (tested on Windows 10).
> Just to clarify: you're saying that neither this third party version nor
> BouncyCastler can decrypt the OpenSSL generated CMS objects?

No, I didn't want to say that. BouncyCastle is unable to decrypt the 
third-party CMS object that I sent as an attachment in the initial email 
of this thread.

OpenSSL and BouncyCastle interoperate just fine, I can encrypt and 
decrypt CMS messages in both directions without problems.


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