For some unknown reason, the signature gets a length of 257 bytes instead of 256 bytes, and the length of the hex value is 514 bytes instead of 512 bytes.
This works around it, until a proper fix is implemented. The bug seems to be caused by https://github.com/node-ebics/node-ebics-client/blob/master/lib/crypto/Crypto.js#L71 somehow.
Signed-off-by: Herman van Hazendonk <github.com@herrie.org>