Values and constants

hash signature mechanism

For HashSignatureMechanism the following values values are supported:

• SHA256withRSA
• SHA384withRSA
• SHA512withRSA
• SHA256withECDSA
• SHA384withECDSA
• SHA512withECDSA

ECDSA signature format

The signature created by the A-Trust server is an ECDSA signature in the following format:

$$\begin{aligned} ~signature &= Base64(~R + ~S ) \\ \text{where}~R &= \text{first coordinate of ECDSA point} \\ ~S &= \text{second coordinate of ECDSA point} \end{aligned}$$

Errorcodes

The following error messages are returned by the A-Trust service

HTTP statuscode	description
200	OK & success
400	bad request & error parsing the request
404	not found & no seal for the given serial number or authentication certificate found
422	unprocessable entity & given and do not match
500	internal server error & internal error