/
sign.go
46 lines (36 loc) · 1.08 KB
/
sign.go
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package crypto
import (
"encoding/base64"
"github.com/stellar/go/keypair"
)
// SignerVerifierInterface is the interface that helps mocking SignerVerifier
type SignerVerifierInterface interface {
Sign(secretSeed string, message []byte) (string, error)
Verify(publicKey string, message, signature []byte) error
}
// SignerVerifier implements methods to Sign and Verify signatures
type SignerVerifier struct{}
// Sign signs message using secretSeed. Returns base64-encoded signature.
func (s *SignerVerifier) Sign(secretSeed string, message []byte) (string, error) {
kp, err := keypair.Parse(secretSeed)
if err != nil {
return "", err
}
signature, err := kp.Sign(message)
if err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString(signature), nil
}
// Verify verifies if signature is a valid signature of message signed by publicKey.
func (s *SignerVerifier) Verify(publicKey string, message, signature []byte) error {
kp, err := keypair.Parse(publicKey)
if err != nil {
return err
}
err = kp.Verify(message, signature)
if err != nil {
return err
}
return nil
}