SSL handshake failure - TLS1.2 vs SSLV3 target

Google Cloud Apigee
1

Trying to connect to Target server via Self signed certs Mutual Auth. After setting up the trustore in apigee and install Apigee certs in Targer servers i am getting “Received fatal alert: handshake_failure”. one observation is target is legacy system and certs has SHA1 algorithm and apigee has SHA256 alogirthm. please advise is this a known issue and solution for it.

also the target server support SSLV3 and openssl command is failing with below error.

<<< TLS 1.2 Alert [length 0002], fatal handshake_failure

:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:s23_clnt.c:744:

no other errors are logged in trace other than below.

error

The Service is temporarily unavailable

type

ErrorPoint

state

TARGET_REQ_FLOW

error.class

com.apigee.transport.errors.HttpAdaptorException

error.cause

Received fatal alert: handshake_failure

Identifier

fault
2

You talking about the free trial? that has the below

Signature Algorithm

SHA1withRSA

3

no. this is from the on prem instance.

4

Can you explain more on apigee has SHA256 algorithm? you talking about the client cert?