EEs use this service to refresh its locally cached RA certificate.
|HTTP Request Body||ASN.1 serialized SecuredRACertRequest PDU Message.|
|HTTP Response Body||Serialized IEEE 1609.2 certificate|
- The 1609 certificate is returned to the device.
See "RA-EE Errors" in Overview of Used Error Codes
Quality of Service
Estimated values are per logical unit, meaning multiple individual nodes can contribute to achieve the desired level of service. The number of vehicles likely to download the RA certificate is a function of the number of years in service:
Assuming half of all new cars plus all existing vehicles need to refresh their copy of the RA certificate in one week.
8,500,000 new vehicles / 604,800 seconds/week
= 14 requests / second
(8,500,000 new vehicles + 34,000,000 existing vehicles) / 604,800 seconds/week
= 70 requests / second
(8,500,000 new vehicles + 68,000,000 existing vehicles) / 604,800 seconds/week
= 126 requests / second
(8,500,000 new vehicles + 153,000,000 existing vehicles) / 604,800 seconds/week
= 267 requests / second
Quality of Protection
- RA protects access with HTTPS (TLS V1.2)
- Supports at a minimum OpenSSL cipher suite ECDHE-ECDSA-AES128-SHA256