unknown message digest algorithm

Mody, Darshan Arvindkumar (Darshan) darshanmody at avaya.com
Thu Jun 20 17:29:41 UTC 2019


The openssl version is 1.0.2

Thanks and Regards

From: Mody, Darshan Arvindkumar (Darshan)
Sent: Wednesday, 19 June, 19:49
Subject: unknown message digest algorithm
To: 'openssl-users at openssl.org', openssl-dev at openssl.org
Cc: Mahajan, Hrishikesh Ulhas (Hrishikesh), Phadnis, Mohan Vinayak (Mohan)


We are facing issues with regards to SSL_Read operation.

We see the error “error:0D0C50A1:asn1 encoding routines:ASN1_item_verify: unknown message digest algorithm” during SSL read operation. Below are my queries

Is it possible to have such error during ‘read operation’ on OpensslWhere can this issue occur?

To my understanding this issue can occur when a far-end client tries to establish the connection with the server and has issue with his certificates (SHA-2 encryption on the certificates)

Thanks for your guidance.


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