Generate server-sm2-cert.der

[gojimmypi]

Description

This PR is an extension of #6825 which should be merged first. This change is separate in order to not complicate the other PR.

The conversion of server-sm2-cert.pem to DER format is corrected with a server-sm2-cert.der output name,

This is particularly important as the DER files have only one cert. (specifically server-sm2.der)

The naming convention is a bit misleading, as server-sm2.pem actually contains TWO certs:

cat   server-sm2-cert.pem    ca-sm2.pem    >    server-sm2.pem

Adding the separate server-sm2-cert.der file in this PR allows embedded targets to load both the leaf and CA separately:

    ret = wolfSSL_CTX_load_verify_buffer(ctx,
                                         server_sm2_cert_der,
                                         sizeof_server_sm2_cert_der,
                                         WOLFSSL_FILETYPE_ASN1);

    ret = wolfSSL_CTX_load_verify_buffer(ctx,
                                        ca_sm2_der, sizeof_ca_sm2_der,
                                        WOLFSSL_FILETYPE_ASN1);

Fixes zd#

Testing

How did you test?

Tested manually on embedded targets only.

Checklist

• added tests
• updated/added doxygen
• updated appropriate READMEs
• Updated manual and documentation

[gojimmypi]

Jenkins retest this please

For: Cannot contact wolf-linux-cloud-node-[n]: java.lang.InterruptedException
java.io.StreamCorruptedException: invalid stream header: 636F7272

[SparkiDev]

retest this please