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add es256k (secp256k1 curve) support #643
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| package key | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto" | ||
| "crypto/ecdsa" | ||
| "encoding/hex" | ||
| "flag" | ||
| "os" | ||
| "strings" | ||
| "testing" | ||
|
|
||
| "github.com/decred/dcrd/dcrec/secp256k1/v4" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/urfave/cli" | ||
| ) | ||
|
|
||
| func TestReadKey_PrivateKey(t *testing.T) { | ||
| arbitraryPrivateKey := "0x157c3200d896c0595a205109c5b5656e82621e8214a12a9561727870f5867962" | ||
| f, err := prepareFile(arbitraryPrivateKey) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| defer func() { | ||
| _ = os.Remove(f.Name()) | ||
| }() | ||
| flags := &flag.FlagSet{} | ||
| flags.String("alg", "secp256k1", "") | ||
| ctx := cli.NewContext(nil, flags, nil) | ||
|
|
||
| pk, err := readKey(f.Name(), false, ctx) | ||
| if err != nil { | ||
| t.Errorf("%v", err) | ||
| } | ||
|
|
||
| assert.IsType(t, &ecdsa.PrivateKey{}, pk) | ||
| } | ||
|
|
||
| func TestReadKey_PublicKey(t *testing.T) { | ||
| arbitraryPubKey := "02d1e996bf09686ca22e5303e7d3abda4ccbbcdee94f5eb3adf6cad7238f27f840" | ||
| f, err := prepareFile(arbitraryPubKey) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| defer func() { | ||
| _ = os.Remove(f.Name()) | ||
| }() | ||
| flags := &flag.FlagSet{} | ||
| flags.String("alg", "secp256k1", "") | ||
| ctx := cli.NewContext(nil, flags, nil) | ||
|
|
||
| pk, err := readKey(f.Name(), true, ctx) | ||
| if err != nil { | ||
| t.Errorf("%v", err) | ||
| } | ||
|
|
||
| assert.IsType(t, &ecdsa.PublicKey{}, pk) | ||
| } | ||
|
|
||
| func TestSign(t *testing.T) { | ||
| var capturedOutput bytes.Buffer | ||
| output = &capturedOutput | ||
| defer func() { | ||
| output = os.Stdout | ||
| }() | ||
| arbitraryKeyPair := struct { | ||
| priv string | ||
| pub string | ||
| }{ | ||
| priv: "0xb2cf8112327c38acc3b16b2cea56c684aa94580caae76e29dcb244f19bec88e2", | ||
| pub: "0224e7f25110dabeb26e1f94760dc9abe15fd35d5cd2f60ce99d5fe3f35b552fcc", | ||
| } | ||
| arbitraryData := "test data" | ||
| pkFile, err := prepareFile(arbitraryKeyPair.priv) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| defer func() { | ||
| _ = os.Remove(pkFile.Name()) | ||
| }() | ||
| dataFile, err := prepareFile(arbitraryData) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| defer func() { | ||
| _ = os.Remove(dataFile.Name()) | ||
| }() | ||
| flags := &flag.FlagSet{} | ||
| flags.String("alg", "secp256k1", "") | ||
| flags.String("key", pkFile.Name(), "") | ||
| flags.String("format", "hex", "") | ||
| _ = flags.Parse([]string{dataFile.Name()}) | ||
| ctx := cli.NewContext(nil, flags, nil) | ||
|
|
||
| assert.NoError(t, signAction(ctx)) | ||
|
|
||
| actual := strings.TrimSpace(capturedOutput.String()) | ||
| sig, err := hex.DecodeString(actual) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| // now verify it | ||
| pubKey, err := hex.DecodeString(arbitraryKeyPair.pub) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| secpPubKey, err := secp256k1.ParsePubKey(pubKey) | ||
| if err != nil { | ||
| t.Fatalf("%v", err) | ||
| } | ||
| assert.True(t, ecdsa.VerifyASN1(secpPubKey.ToECDSA(), hash(crypto.SHA256, []byte(arbitraryData)), sig)) | ||
| } | ||
|
|
||
| // remember to delete file after use | ||
| func prepareFile(s string) (*os.File, error) { | ||
| f, err := os.CreateTemp("", "test-") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if _, err := f.WriteString(s); err != nil { | ||
| return nil, err | ||
| } | ||
| defer func() { | ||
| _ = f.Close() | ||
| }() | ||
| return f, nil | ||
| } |
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Is there any reason to not use a PEM file for this?
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No, there's no reason. We can certainly use PEM here.
Maybe we can add support for hex-encoded key and wallet (JSON, imported format). The support can be done directly in related commands or in the
formatcommand.Blockchain client node implementations often import keys via those above methods.