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fixed crypto

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This commit is contained in:
Jae Kwon 2014-05-26 04:11:47 -07:00
parent e9e130b4ad
commit 55a9031e91
2 changed files with 44 additions and 9 deletions
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12
crypto/ed25519.go
View File

@ -13,11 +13,11 @@ import "unsafe"
type Verify struct { type Verify struct {
Message []byte Message []byte
PubKey []byte PubKey []byte
Sig []byte Signature []byte
Valid bool Valid bool
} }
func makeKeypair(privKey []byte) []byte { func MakePubKey(privKey []byte) []byte {
pubKey := [32]byte{} pubKey := [32]byte{}
C.ed25519_publickey( C.ed25519_publickey(
(*C.uchar)(unsafe.Pointer(&privKey[0])), (*C.uchar)(unsafe.Pointer(&privKey[0])),
@ -26,7 +26,7 @@ func makeKeypair(privKey []byte) []byte {
return pubKey[:] return pubKey[:]
} }
func signMessage(message []byte, privKey []byte, pubKey []byte) []byte { func SignMessage(message []byte, privKey []byte, pubKey []byte) []byte {
sig := [64]byte{} sig := [64]byte{}
C.ed25519_sign( C.ed25519_sign(
(*C.uchar)(unsafe.Pointer(&message[0])), (C.size_t)(len(message)), (*C.uchar)(unsafe.Pointer(&message[0])), (C.size_t)(len(message)),
@ -37,7 +37,7 @@ func signMessage(message []byte, privKey []byte, pubKey []byte) []byte {
return sig[:] return sig[:]
} }
func verifyBatch(verifys []Verify) bool { func VerifyBatch(verifys []*Verify) bool {
count := len(verifys) count := len(verifys)
@ -51,14 +51,14 @@ func verifyBatch(verifys []Verify) bool {
msgs[i] = (*byte)(unsafe.Pointer(&v.Message[0])) msgs[i] = (*byte)(unsafe.Pointer(&v.Message[0]))
lens[i] = (C.size_t)(len(v.Message)) lens[i] = (C.size_t)(len(v.Message))
pubs[i] = (*byte)(&v.PubKey[0]) pubs[i] = (*byte)(&v.PubKey[0])
sigs[i] = (*byte)(&v.Sig[0]) sigs[i] = (*byte)(&v.Signature[0])
} }
count_ := (C.size_t)(count) count_ := (C.size_t)(count)
msgs_ := (**C.uchar)(unsafe.Pointer(&msgs[0])) msgs_ := (**C.uchar)(unsafe.Pointer(&msgs[0]))
lens_ := (*C.size_t)(unsafe.Pointer(&lens[0])) lens_ := (*C.size_t)(unsafe.Pointer(&lens[0]))
pubs_ := (**C.uchar)(unsafe.Pointer(&pubs[0])) pubs_ := (**C.uchar)(unsafe.Pointer(&pubs[0]))
sigs_ := (**C.uchar)(unsafe.Pointer(&pubs[0])) sigs_ := (**C.uchar)(unsafe.Pointer(&sigs[0]))
res := C.ed25519_sign_open_batch(msgs_, lens_, pubs_, sigs_, count_, &valids[0]) res := C.ed25519_sign_open_batch(msgs_, lens_, pubs_, sigs_, count_, &valids[0])

35
crypto/ed25519_test.go Normal file
View File

@ -0,0 +1,35 @@
package crypto
import (
"testing"
"crypto/rand"
)
func TestSign(t *testing.T) {
privKey := make([]byte, 32)
_, err := rand.Read(privKey)
if err != nil { t.Fatal(err) }
pubKey := MakePubKey(privKey)
signature := SignMessage([]byte("hello"), privKey, pubKey)
v1 := &Verify{
Message: []byte("hello"),
PubKey: pubKey,
Signature: signature,
}
ok := VerifyBatch([]*Verify{v1, v1, v1, v1})
if ok != true { t.Fatal("Expected ok == true") }
if v1.Valid != true { t.Fatal("Expected v1.Valid to be true") }
v2 := &Verify{
Message: []byte{0x73},
PubKey: pubKey,
Signature: signature,
}
ok = VerifyBatch([]*Verify{v1, v1, v1, v2})
if ok != false { t.Fatal("Expected ok == false") }
if v1.Valid != true { t.Fatal("Expected v1.Valid to be true") }
if v2.Valid != false { t.Fatal("Expected v2.Valid to be true") }
}