asn1 = SEQUENCE:attrs

[attrs]
#oid1 = OID:challengePassword
attr1 = SEQUENCE:extreq
oid2 = OID:sha256WithRSAEncryption

[extreq]
oid = OID:extensionRequest
vals = SET:extreqvals

[extreqvals]

oid1 = OID:macAddress
#oid2 = OID:imei
#oid3 = OID:meid
#oid4 = OID:DevId