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42 lines
1.0 KiB
42 lines
1.0 KiB
package sr25519
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import (
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"fmt"
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schnorrkel "github.com/ChainSafe/go-schnorrkel"
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"github.com/tendermint/tendermint/crypto"
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)
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var _ crypto.BatchVerifier = BatchVerifier{}
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// BatchVerifier implements batch verification for sr25519.
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// https://github.com/ChainSafe/go-schnorrkel is used for batch verification
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type BatchVerifier struct {
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*schnorrkel.BatchVerifier
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}
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func NewBatchVerifier() crypto.BatchVerifier {
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return BatchVerifier{schnorrkel.NewBatchVerifier()}
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}
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func (b BatchVerifier) Add(key crypto.PubKey, msg, sig []byte) error {
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var sig64 [SignatureSize]byte
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copy(sig64[:], sig)
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signature := new(schnorrkel.Signature)
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err := signature.Decode(sig64)
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if err != nil {
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return fmt.Errorf("unable to decode signature: %w", err)
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}
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signingContext := schnorrkel.NewSigningContext([]byte{}, msg)
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var pk [PubKeySize]byte
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copy(pk[:], key.Bytes())
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return b.BatchVerifier.Add(signingContext, signature, schnorrkel.NewPublicKey(pk))
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}
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func (b BatchVerifier) Verify() bool {
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return b.BatchVerifier.Verify()
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}
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