Update project structure and build process

libwallet/scrypt.go

@@ -0,0 +1,27 @@
+package libwallet
+
+import (
+	"golang.org/x/crypto/scrypt"
+)
+
+const (
+	iterations            = 512
+	blockSize             = 8
+	parallelizationFactor = 1
+	outputLength          = 32
+)
+
+func Scrypt256(data, salt []byte) []byte {
+	return scrypt256(data, salt, iterations, blockSize, parallelizationFactor)
+}
+
+func scrypt256(data, salt []byte, iterations, blockSize, parallelizationFactor int) []byte {
+
+	key, err := scrypt.Key(data, salt, iterations, blockSize, parallelizationFactor, outputLength)
+
+	if err != nil {
+		panic("scrypt parameters are bad")
+	}
+
+	return key
+}