An Ed448 signature is 114 bytes (binary). When serialized as CESR, there's a 4/3 increase in size, and a prefix. The correct size of this primitive in CESR is 156 bytes, which is what the spec claims, not 56 bytes as currently shown in the Matter class in keripy. (https://asecuritysite.com/signatures/x448_sig)
An Ed448 signature is 114 bytes (binary). When serialized as CESR, there's a 4/3 increase in size, and a prefix. The correct size of this primitive in CESR is 156 bytes, which is what the spec claims, not 56 bytes as currently shown in the Matter class in keripy. (https://asecuritysite.com/signatures/x448_sig)
Fix requested by @SmithSamuelM
Fixes #892