1package c2patypes
2
3import (
4 "crypto"
5 "crypto/rand"
6 "crypto/sha256"
7)
8
9type CallbackSigner struct {
10 signer crypto.Signer
11}
12
13func (c *CallbackSigner) Sign(data []byte) ([]byte, error) {
14 digest := sha256.New().Sum(data)
15
16 return c.signer.Sign(rand.Reader, digest, nil)
17}