mirror of
https://github.com/tendermint/tendermint.git
synced 2026-02-07 04:20:44 +00:00
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package crypto
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import (
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"bytes"
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"crypto/sha512"
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"fmt"
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"github.com/tendermint/ed25519"
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"github.com/tendermint/ed25519/extra25519"
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"golang.org/x/crypto/ripemd160"
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)
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var _ PubKey = PubKeyLedgerEd25519{}
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// Implements PubKeyInner
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type PubKeyLedgerEd25519 [32]byte
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func (pubKey PubKeyLedgerEd25519) Address() Address {
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// append type byte
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hasher := ripemd160.New()
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hasher.Write(pubKey.Bytes()) // does not error
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return Address(hasher.Sum(nil))
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}
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func (pubKey PubKeyLedgerEd25519) Bytes() []byte {
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bz, err := cdc.MarshalBinaryBare(pubKey)
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if err != nil {
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panic(err)
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}
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return bz
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}
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func (pubKey PubKeyLedgerEd25519) VerifyBytes(msg []byte, sig_ Signature) bool {
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// must verify sha512 hash of msg, no padding, for Ledger compatibility
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sig, ok := sig_.(SignatureEd25519)
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if !ok {
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return false
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}
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pubKeyBytes := [32]byte(pubKey)
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sigBytes := [64]byte(sig)
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h := sha512.New()
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h.Write(msg)
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digest := h.Sum(nil)
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return ed25519.Verify(&pubKeyBytes, digest, &sigBytes)
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}
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// For use with golang/crypto/nacl/box
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// If error, returns nil.
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func (pubKey PubKeyLedgerEd25519) ToCurve25519() *[32]byte {
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keyCurve25519, pubKeyBytes := new([32]byte), [32]byte(pubKey)
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ok := extra25519.PublicKeyToCurve25519(keyCurve25519, &pubKeyBytes)
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if !ok {
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return nil
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}
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return keyCurve25519
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}
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func (pubKey PubKeyLedgerEd25519) String() string {
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return fmt.Sprintf("PubKeyLedgerEd25519{%X}", pubKey[:])
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}
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func (pubKey PubKeyLedgerEd25519) Equals(other PubKey) bool {
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if otherEd, ok := other.(PubKeyLedgerEd25519); ok {
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return bytes.Equal(pubKey[:], otherEd[:])
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} else {
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return false
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}
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}
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