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// Copyright 2016, 2017 Thales e-Security, Inc
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package crypto11
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
_ "crypto/sha1"
_ "crypto/sha256"
_ "crypto/sha512"
"testing"
"github.com/miekg/pkcs11"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var curves = []elliptic.Curve{
elliptic.P224(),
elliptic.P256(),
elliptic.P384(),
elliptic.P521(),
// plus something with explicit parameters
}
func TestNativeECDSA(t *testing.T) {
var err error
var key *ecdsa.PrivateKey
for _, curve := range curves {
if key, err = ecdsa.GenerateKey(curve, rand.Reader); err != nil {
t.Errorf("crypto.ecdsa.GenerateKey: %v", err)
return
}
testEcdsaSigning(t, key, crypto.SHA1, curve.Params().Name, "SHA-1")
testEcdsaSigning(t, key, crypto.SHA224, curve.Params().Name, "SHA-224")
testEcdsaSigning(t, key, crypto.SHA256, curve.Params().Name, "SHA-256")
testEcdsaSigning(t, key, crypto.SHA384, curve.Params().Name, "SHA-384")
testEcdsaSigning(t, key, crypto.SHA512, curve.Params().Name, "SHA-512")
}
}
func TestHardECDSA(t *testing.T) {
ctx, err := ConfigureFromFile("config")
require.NoError(t, err)
defer func() {
err = ctx.Close()
require.NoError(t, err)
}()
for _, curve := range curves {
id := randomBytes()
label := randomBytes()
key, err := ctx.GenerateECDSAKeyPairWithLabel(id, label, curve)
require.NoError(t, err)
require.NotNil(t, key)
defer func(k Signer) { _ = k.Delete() }(key)
testEcdsaSigning(t, key, crypto.SHA1, curve.Params().Name, "SHA-1")
testEcdsaSigning(t, key, crypto.SHA224, curve.Params().Name, "SHA-224")
testEcdsaSigning(t, key, crypto.SHA256, curve.Params().Name, "SHA-256")
testEcdsaSigning(t, key, crypto.SHA384, curve.Params().Name, "SHA-384")
testEcdsaSigning(t, key, crypto.SHA512, curve.Params().Name, "SHA-512")
key2, err := ctx.FindKeyPair(id, nil)
require.NoError(t, err)
testEcdsaSigning(t, key2.(*pkcs11PrivateKeyECDSA), crypto.SHA256, curve.Params().Name, "SHA-256")
key3, err := ctx.FindKeyPair(nil, label)
require.NoError(t, err)
testEcdsaSigning(t, key3.(crypto.Signer), crypto.SHA384, curve.Params().Name, "SHA-384")
}
}
func testEcdsaSigning(t *testing.T, key crypto.Signer, hashFunction crypto.Hash, curveName, hashName string) {
plaintext := []byte("sign me with ECDSA")
h := hashFunction.New()
_, err := h.Write(plaintext)
require.NoError(t, err)
plaintextHash := h.Sum(nil)
sigDER, err := key.Sign(rand.Reader, plaintextHash, nil)
p11Err, ok := err.(pkcs11.Error)
if ok && p11Err == pkcs11.CKR_KEY_SIZE_RANGE {
// Returned by CloudHSM (at least), for key sizes it doesn't support.
t.Logf("Skipping unsupported curve %s and hash %s", curveName, hashName)
return
}
assert.NoErrorf(t, err, "Sign failed for curve %s and hash %s", curveName, hashName)
if err != nil {
// We assert and return, so that errors are more informative over a range of curves
// and hashes.
return
}
var sig dsaSignature
err = sig.unmarshalDER(sigDER)
require.NoError(t, err)
ecdsaPubkey := key.Public().(crypto.PublicKey).(*ecdsa.PublicKey)
if !ecdsa.Verify(ecdsaPubkey, plaintextHash, sig.R, sig.S) {
t.Errorf("ECDSA Verify (hash %v): %v", hashFunction, err)
}
}
func TestEcdsaRequiredArgs(t *testing.T) {
ctx, err := ConfigureFromFile("config")
require.NoError(t, err)
defer func() {
require.NoError(t, ctx.Close())
}()
_, err = ctx.GenerateECDSAKeyPair(nil, elliptic.P224())
require.Error(t, err)
val := randomBytes()
_, err = ctx.GenerateECDSAKeyPairWithLabel(nil, val, elliptic.P224())
require.Error(t, err)
_, err = ctx.GenerateECDSAKeyPairWithLabel(val, nil, elliptic.P224())
require.Error(t, err)
}
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