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package crypto
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"encoding/pem"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func genECDSAPrivKey() (*ecdsa.PrivateKey, string) {
priv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
der, _ := x509.MarshalECPrivateKey(priv)
privBlock := &pem.Block{
Type: "EC PRIVATE KEY",
Bytes: der,
}
return priv, string(pem.EncodeToMemory(privBlock))
}
func deriveECPubkey(priv *ecdsa.PrivateKey) string {
b, _ := x509.MarshalPKIXPublicKey(&priv.PublicKey)
pubBlock := &pem.Block{
Type: "PUBLIC KEY",
Bytes: b,
}
testPubKey := string(pem.EncodeToMemory(pubBlock))
return testPubKey
}
func TestECDSAGenerateKey(t *testing.T) {
key, err := ECDSAGenerateKey(elliptic.P224())
require.NoError(t, err)
assert.True(t, strings.HasPrefix(string(key),
"-----BEGIN EC PRIVATE KEY-----"))
assert.True(t, strings.HasSuffix(string(key),
"-----END EC PRIVATE KEY-----\n"))
key, err = ECDSAGenerateKey(elliptic.P256())
require.NoError(t, err)
assert.True(t, strings.HasPrefix(string(key),
"-----BEGIN EC PRIVATE KEY-----"))
assert.True(t, strings.HasSuffix(string(key),
"-----END EC PRIVATE KEY-----\n"))
key, err = ECDSAGenerateKey(elliptic.P384())
require.NoError(t, err)
assert.True(t, strings.HasPrefix(string(key),
"-----BEGIN EC PRIVATE KEY-----"))
assert.True(t, strings.HasSuffix(string(key),
"-----END EC PRIVATE KEY-----\n"))
key, err = ECDSAGenerateKey(elliptic.P521())
require.NoError(t, err)
assert.True(t, strings.HasPrefix(string(key),
"-----BEGIN EC PRIVATE KEY-----"))
assert.True(t, strings.HasSuffix(string(key),
"-----END EC PRIVATE KEY-----\n"))
}
func TestECDSADerivePublicKey(t *testing.T) {
_, err := ECDSADerivePublicKey(nil)
require.Error(t, err)
_, err = ECDSADerivePublicKey([]byte(`-----BEGIN FOO-----
-----END FOO-----`))
require.Error(t, err)
priv, privKey := genECDSAPrivKey()
expected := deriveECPubkey(priv)
actual, err := ECDSADerivePublicKey([]byte(privKey))
require.NoError(t, err)
assert.Equal(t, expected, string(actual))
}
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