Problems porting Openssl 1.1.1d to zos.

Matthias St. Pierre Matthias.St.Pierre at
Mon Nov 11 16:13:12 UTC 2019

On 11.11.19 16:42, Wendell Nichols via openssl-users wrote:
> Is there anyone on this group with experience with ebcdic platforms, specifically zOS?  I have built 1.1.1d on zOS and connections to my server work for firefox 60 but not newer versions.  I don't know exactly where the cut off is or what they changed but current versions get an HMAC error.  I strongly suspect that it is keying the hmac with some combination of inputs that include an improperly translated text string, but I don't know for sure.  Its quite hard to track down when you don't have a debugger.
> The error message:
>> An error occurred during a connection to SSL received a record with an incorrect Message Authentication Code. Error code: SSL_ERROR_BAD_MAC_READ
> If anyone can suggest an approach to figuring this out I'd be grateful.
> Wendell Nichols

Incidentally, I just merged a pull request that fixed a misspelled EBCDIC string to master and 1.1.1.

But I have no idea whether it is related to your problem. Nevertheless, you might want to retry with the current tip of the OpenSSL_1_1_1-stable branch.


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