Operation request: Sign/Verify with EdDSA

[cplussharp]

Summary

Similar to RSA, support "Sign with EdDSA" and "Verfiy with EdDSA"

Example Input

the needed key for the operation (sign=>private key | verify => public key) as PEM

for sign the message is the input for verify the signature is the input (and the message is provided as option)

Example Output

for sign: the signature for verify: the verification result