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signature.go
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signature.go
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package bliss
import (
"crypto/rand"
"github.com/hybridnetwork/bliss"
"github.com/hybridnetwork/bliss/sampler"
hxcrypto "github.com/hybridnetwork/hxd/crypto"
)
type Signature struct {
hxcrypto.SignatureAdapter
bliss.Signature
}
func (s Signature) GetType() int {
return pqcTypeBliss
}
func (s Signature) Serialize() []byte {
return s.Signature.Serialize()
}
func SignCompact(key hxcrypto.PrivateKey, hash []byte) ([]byte, error) {
seed := make([]byte, sampler.SHA_512_DIGEST_LENGTH)
rand.Read(seed)
entropy, err := sampler.NewEntropy(seed)
if err != nil {
return nil, err
}
var sig *bliss.Signature
switch pv := key.(type) {
case PrivateKey:
sig, err = pv.Sign(hash, entropy)
case *PrivateKey:
sig, err = pv.Sign(hash, entropy)
}
if err != nil {
return nil, err
}
result := sig.Serialize()
return result, err
}
func VerifyCompact(key hxcrypto.PublicKey, messageHash, sign []byte) (bool, error) {
sig, _ := bliss.DeserializeBlissSignature(sign)
result, err := key.(*PublicKey).Verify(messageHash, sig)
return result, err
}