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keys_test.go
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keys_test.go
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package schnorrkel
import (
"encoding/hex"
"fmt"
"testing"
"github.com/stretchr/testify/require"
)
func ExampleGenerateKeypair() {
priv, pub, err := GenerateKeypair()
if err != nil {
panic(err)
}
fmt.Printf("0x%x\n", priv.Encode())
fmt.Printf("0x%x\n", pub.Encode())
}
func ExampleMiniSecretKey() {
// To create a private-public keypair from a subkey keypair, use `NewMiniSecretKeyFromRaw`
// This example uses the substrate built-in key Alice:
// $ subkey inspect //Alice
priv, err := NewMiniSecretKeyFromHex("0xe5be9a5092b81bca64be81d212e7f2f9eba183bb7a90954f7b76361f6edb5c0a")
if err != nil {
panic(err)
}
pub := priv.Public()
fmt.Printf("0x%x", pub.Encode())
// Output: 0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d
}
func ExampleMiniSecretKey_ExpandEd25519() {
msg := []byte("hello")
signingCtx := []byte("example")
signingTranscript := NewSigningContext(signingCtx, msg)
msk, err := NewMiniSecretKeyFromHex("0xe5be9a5092b81bca64be81d212e7f2f9eba183bb7a90954f7b76361f6edb5c0a")
if err != nil {
panic(err)
}
sk := msk.ExpandEd25519()
sig, err := sk.Sign(signingTranscript)
if err != nil {
panic(err)
}
fmt.Printf("0x%x", sig.Encode())
}
func TestGenerateKeypair(t *testing.T) {
priv, pub, err := GenerateKeypair()
require.NoError(t, err)
require.NotNil(t, priv)
require.NotNil(t, pub)
pub2, err := priv.Public()
require.NoError(t, err)
require.Equal(t, pub.key.Encode([]byte{}), pub2.key.Encode([]byte{}))
}
func TestGenerateKeypairFromSecretKey(t *testing.T) {
priv, pub, err := GenerateKeypair()
require.NoError(t, err)
require.NotNil(t, priv)
require.NotNil(t, pub)
kp, err := priv.Keypair()
require.NoError(t, err)
require.Equal(t, pub.key.Encode([]byte{}), kp.publicKey.key.Encode([]byte{}))
}
// test cases from: https://github.com/Warchant/sr25519-crust/blob/master/test/keypair_from_seed.cpp
func TestMiniSecretKey_ExpandEd25519(t *testing.T) {
msc, err := NewMiniSecretKeyFromRaw([32]byte{})
require.NoError(t, err)
sc := msc.ExpandEd25519()
expected, err := hex.DecodeString("caa835781b15c7706f65b71f7a58c807ab360faed6440fb23e0f4c52e930de0a0a6a85eaa642dac835424b5d7c8d637c00408c7a73da672b7f498521420b6dd3def12e42f3e487e9b14095aa8d5cc16a33491f1b50dadcf8811d1480f3fa8627")
require.NoError(t, err)
require.Equal(t, expected[:32], sc.key[:])
require.Equal(t, expected[32:64], sc.nonce[:])
pub := msc.Public().Encode()
require.Equal(t, expected[64:], pub[:])
}
func TestMiniSecretKey_Public(t *testing.T) {
// test vectors from https://github.com/noot/schnorrkel/blob/master/src/keys.rs#L996
raw := [32]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2}
msc, err := NewMiniSecretKeyFromRaw(raw)
require.NoError(t, err)
sc := msc.ExpandEd25519()
expectedKey := []byte{11, 241, 180, 83, 213, 181, 31, 180, 138, 45, 144, 84, 2, 78, 47, 81, 225, 208, 202, 53, 128, 52, 89, 144, 36, 92, 197, 51, 166, 28, 152, 10}
expectedNonce := []byte{69, 121, 245, 84, 53, 88, 241, 101, 252, 126, 198, 17, 237, 114, 215, 135, 224, 58, 4, 75, 134, 169, 226, 109, 76, 133, 25, 135, 115, 81, 176, 46}
expectedPubkey := []byte{140, 122, 228, 195, 50, 29, 229, 250, 94, 159, 183, 123, 208, 116, 7, 78, 229, 29, 247, 64, 172, 187, 92, 144, 121, 56, 242, 3, 116, 99, 100, 32}
require.Equal(t, expectedKey, sc.key[:])
require.Equal(t, expectedNonce, sc.nonce[:])
pub := msc.Public().Encode()
require.Equal(t, expectedPubkey, pub[:])
}
func TestPublicKey_Decode(t *testing.T) {
// test vectors from https://github.com/Warchant/sr25519-crust/blob/master/test/ds.cpp#L48
pubhex, err := hex.DecodeString("46ebddef8cd9bb167dc30878d7113b7e168e6f0646beffd77d69d39bad76b47a")
require.NoError(t, err)
in := [32]byte{}
copy(in[:], pubhex)
pub := &PublicKey{}
err = pub.Decode(in)
require.NoError(t, err)
privhex, err := hex.DecodeString("05d65584630d16cd4af6d0bec10f34bb504a5dcb62dba2122d49f5a663763d0a")
require.NoError(t, err)
copy(in[:], privhex)
priv := &SecretKey{}
err = priv.Decode(in)
require.NoError(t, err)
expected, err := priv.Public()
require.NoError(t, err)
pubcmp := pub.Encode()
expcmp := expected.Encode()
require.Equal(t, expcmp[:], pubcmp[:])
}
func TestNewPublicKey(t *testing.T) {
pub := [32]byte{140, 122, 228, 195, 50, 29, 229, 250, 94, 159, 183, 123, 208, 116, 7, 78, 229, 29, 247, 64, 172, 187, 92, 144, 121, 56, 242, 3, 116, 99, 100, 32}
pk, err := NewPublicKey(pub)
require.NoError(t, err)
enc := pk.Encode()
require.Equal(t, pub[:], enc[:])
}
func TestNewSecretKeyFromEd25519Bytes(t *testing.T) {
// test vectors from https://github.com/w3f/schnorrkel/blob/ab3e3d609cd8b9eefbe0333066f698c40fd09582/src/keys.rs#L504-L507
b := [64]byte{}
byteshex, err := hex.DecodeString("28b0ae221c6bb06856b287f60d7ea0d98552ea5a16db16956849aa371db3eb51fd190cce74df356432b410bd64682309d6dedb27c76845daf388557cbac3ca34")
require.NoError(t, err)
copy(b[:], byteshex)
pub := [32]byte{}
pubhex, err := hex.DecodeString("46ebddef8cd9bb167dc30878d7113b7e168e6f0646beffd77d69d39bad76b47a")
require.NoError(t, err)
copy(pub[:], pubhex)
sc := NewSecretKeyFromEd25519Bytes(b)
pk, err := sc.Public()
require.NoError(t, err)
require.Equal(t, pub, pk.Encode())
}