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crypto: Abstract pubkey / signature size when known to constants (#1808)

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* crypto: Abstract pubkey / signature size when known to constants

* Created PubKeyEd25519Size as 32
* Created PubkeySecp256k1Size as 33
* Created SignatureEd25519Size as 64

* Remove extraneous message from changelog
This commit is contained in:
Dev Ojha
2018-06-29 00:08:01 -07:00
committed by Anton Kaliaev
parent e26d6ed448
commit 41733b46b9
3 changed files with 16 additions and 7 deletions
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16
crypto/pub_key.go
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@@ -40,8 +40,10 @@ type PubKey interface {
var _ PubKey = PubKeyEd25519{}
const PubKeyEd25519Size = 32
// Implements PubKeyInner
type PubKeyEd25519 [32]byte
type PubKeyEd25519 [PubKeyEd25519Size]byte
// Address is the SHA256-20 of the raw pubkey bytes.
func (pubKey PubKeyEd25519) Address() Address {
@@ -62,15 +64,15 @@ func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool {
if !ok {
return false
}
pubKeyBytes := [32]byte(pubKey)
sigBytes := [64]byte(sig)
pubKeyBytes := [PubKeyEd25519Size]byte(pubKey)
sigBytes := [SignatureEd25519Size]byte(sig)
return ed25519.Verify(&pubKeyBytes, msg, &sigBytes)
}
// For use with golang/crypto/nacl/box
// If error, returns nil.
func (pubKey PubKeyEd25519) ToCurve25519() *[32]byte {
keyCurve25519, pubKeyBytes := new([32]byte), [32]byte(pubKey)
func (pubKey PubKeyEd25519) ToCurve25519() *[PubKeyEd25519Size]byte {
keyCurve25519, pubKeyBytes := new([PubKeyEd25519Size]byte), [PubKeyEd25519Size]byte(pubKey)
ok := extra25519.PublicKeyToCurve25519(keyCurve25519, &pubKeyBytes)
if !ok {
return nil
@@ -94,10 +96,12 @@ func (pubKey PubKeyEd25519) Equals(other PubKey) bool {
var _ PubKey = PubKeySecp256k1{}
const PubKeySecp256k1Size = 33
// Implements PubKey.
// Compressed pubkey (just the x-cord),
// prefixed with 0x02 or 0x03, depending on the y-cord.
type PubKeySecp256k1 [33]byte
type PubKeySecp256k1 [PubKeySecp256k1Size]byte
// Implements Bitcoin style addresses: RIPEMD160(SHA256(pubkey))
func (pubKey PubKeySecp256k1) Address() Address {