cerc-io/lotus
16
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 27 Wiki Activity

Fix CheckBlockSignature, add docks

Browse Source 
Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>
This commit is contained in:
Jakub Sztandera 2020-02-04 07:24:25 +01:00
parent cb05001e5a
commit 5bc1cb2aa3
No known key found for this signature in database
GPG Key ID: 9A9AF56F8B3879BA
2 changed files with 33 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/sigs/doc.go Normal file
View File

@ -0,0 +1,9 @@
// Sigs package allows for signing, verifying signatures and key generation
// using key types selected by package user.
//
// For support of secp256k1 import:
// _ "github.com/filecoin-project/lotus/lib/sigs/secp"
//
// For support of Filecoin BLS import:
// _ "github.com/filecoin-project/lotus/lib/sigs/bls"
package sigs

43
lib/sigs/verify.go → lib/sigs/sigs.go
View File

@ -10,23 +10,8 @@ import (
"golang.org/x/xerrors" "golang.org/x/xerrors"
) )
type SigShim interface { // Sign takes in signature type, private key and message. Returns a signature for that message.
GenPrivate() ([]byte, error) // Valid sigTypes are: "secp256k1" and "bls"
ToPublic(pk []byte) ([]byte, error)
Sign(pk []byte, msg []byte) ([]byte, error)
Verify(sig []byte, a address.Address, msg []byte) error
}
var sigs map[string]SigShim
// RegisterSig should be only used during init
func RegisterSignature(name string, vs SigShim) {
if sigs == nil {
sigs = make(map[string]SigShim)
}
sigs[name] = vs
}
func Sign(sigType string, privkey []byte, msg []byte) (*types.Signature, error) { func Sign(sigType string, privkey []byte, msg []byte) (*types.Signature, error) {
sv, ok := sigs[sigType] sv, ok := sigs[sigType]
if !ok { if !ok {
@ -43,6 +28,7 @@ func Sign(sigType string, privkey []byte, msg []byte) (*types.Signature, error)
}, nil }, nil
} }
// Verify verifies signatures
func Verify(sig *types.Signature, addr address.Address, msg []byte) error { func Verify(sig *types.Signature, addr address.Address, msg []byte) error {
if sig == nil { if sig == nil {
return xerrors.Errorf("signature is nil") return xerrors.Errorf("signature is nil")
@ -60,6 +46,7 @@ func Verify(sig *types.Signature, addr address.Address, msg []byte) error {
return sv.Verify(sig.Data, addr, msg) return sv.Verify(sig.Data, addr, msg)
} }
// Generate generates private key of given type
func Generate(sigType string) ([]byte, error) { func Generate(sigType string) ([]byte, error) {
sv, ok := sigs[sigType] sv, ok := sigs[sigType]
if !ok { if !ok {
@ -69,6 +56,7 @@ func Generate(sigType string) ([]byte, error) {
return sv.GenPrivate() return sv.GenPrivate()
} }
// ToPublic converts private key to public key
func ToPublic(sigType string, pk []byte) ([]byte, error) { func ToPublic(sigType string, pk []byte) ([]byte, error) {
sv, ok := sigs[sigType] sv, ok := sigs[sigType]
if !ok { if !ok {
@ -92,6 +80,23 @@ func CheckBlockSignature(blk *types.BlockHeader, ctx context.Context, worker add
} }
_ = sigb _ = sigb
//return blk.BlockSig.Verify(worker, sigb) return Verify(blk.BlockSig, worker, sigb)
return nil }
// SigShim is used for introducing signature functions
type SigShim interface {
GenPrivate() ([]byte, error)
ToPublic(pk []byte) ([]byte, error)
Sign(pk []byte, msg []byte) ([]byte, error)
Verify(sig []byte, a address.Address, msg []byte) error
}
var sigs map[string]SigShim
// RegisterSig should be only used during init
func RegisterSignature(name string, vs SigShim) {
if sigs == nil {
sigs = make(map[string]SigShim)
}
sigs[name] = vs
} }