BCCSP Filebased Keystore flexible file names

Pem files are very useful to be used directly by users. Lets make
the file names more human-readable.

Change-Id: I14d41d2f2e0c163b5cb1a15ef5ba26f0bd779285
Signed-off-by: Volodymyr Paprotski <[email protected]>

bccsp/pkcs11/fileks.go

@@ -16,6 +16,7 @@ limitations under the License.
 package pkcs11
 
 import (
+	"bytes"
 	"crypto/rsa"
 	"encoding/hex"
 	"errors"
@@ -143,7 +144,7 @@ func (ks *FileBasedKeyStore) GetKey(ski []byte) (k bccsp.Key, err error) {
 			return nil, errors.New("Public key type not recognized")
 		}
 	default:
-		return nil, errors.New("Key type not recognized")
+		return ks.searchKeystoreForSKI(ski)
 	}
 }
 
@@ -189,6 +190,36 @@ func (ks *FileBasedKeyStore) StoreKey(k bccsp.Key) (err error) {
 	return
 }
 
+func (ks *FileBasedKeyStore) searchKeystoreForSKI(ski []byte) (k bccsp.Key, err error) {
+
+	files, _ := ioutil.ReadDir(ks.path)
+	for _, f := range files {
+		if f.IsDir() {
+			continue
+		}
+		raw, err := ioutil.ReadFile(filepath.Join(ks.path, f.Name()))
+
+		key, err := utils.PEMtoPrivateKey(raw, ks.pwd)
+		if err != nil {
+			continue
+		}
+
+		switch key.(type) {
+		case *rsa.PrivateKey:
+			k = &rsaPrivateKey{key.(*rsa.PrivateKey)}
+		default:
+			continue
+		}
+
+		if !bytes.Equal(k.SKI(), ski) {
+			continue
+		}
+
+		return k, nil
+	}
+	return nil, errors.New("Key type not recognized")
+}
+
 func (ks *FileBasedKeyStore) getSuffix(alias string) string {
 	files, _ := ioutil.ReadDir(ks.path)
 	for _, f := range files {

bccsp/sw/fileks.go

@@ -16,6 +16,7 @@ limitations under the License.
 package sw
 
 import (
+	"bytes"
 	"io/ioutil"
 	"os"
 	"sync"
@@ -159,7 +160,7 @@ func (ks *fileBasedKeyStore) GetKey(ski []byte) (k bccsp.Key, err error) {
 			return nil, errors.New("Public key type not recognized")
 		}
 	default:
-		return nil, errors.New("Key type not recognized")
+		return ks.searchKeystoreForSKI(ski)
 	}
 }
 
@@ -221,6 +222,38 @@ func (ks *fileBasedKeyStore) StoreKey(k bccsp.Key) (err error) {
 	return
 }
 
+func (ks *fileBasedKeyStore) searchKeystoreForSKI(ski []byte) (k bccsp.Key, err error) {
+
+	files, _ := ioutil.ReadDir(ks.path)
+	for _, f := range files {
+		if f.IsDir() {
+			continue
+		}
+		raw, err := ioutil.ReadFile(filepath.Join(ks.path, f.Name()))
+
+		key, err := utils.PEMtoPrivateKey(raw, ks.pwd)
+		if err != nil {
+			continue
+		}
+
+		switch key.(type) {
+		case *ecdsa.PrivateKey:
+			k = &ecdsaPrivateKey{key.(*ecdsa.PrivateKey)}
+		case *rsa.PrivateKey:
+			k = &rsaPrivateKey{key.(*rsa.PrivateKey)}
+		default:
+			continue
+		}
+
+		if !bytes.Equal(k.SKI(), ski) {
+			continue
+		}
+
+		return k, nil
+	}
+	return nil, errors.New("Key type not recognized")
+}
+
 func (ks *fileBasedKeyStore) getSuffix(alias string) string {
 	files, _ := ioutil.ReadDir(ks.path)
 	for _, f := range files {