0001    //
0002    //  SHA256Hasher.swift
0003    //  Vapor
0004    //
0005    //  Created by Tanner Nelson on 2/23/16.
0006    //  Copyright © 2016 Tanner Nelson. All rights reserved.
0007    //
0008    
0009    import Foundation
0010    
0011    public class SHA256Hasher
Hash.swift:26
    public static var driver: HashDriver = SHA256Hasher(): HashDriver {
0012        
0013        public func hash(message: String, key: String) -> String {
0014            
0015            var msgBuff = [UInt8]()
0016            msgBuff += message.utf8
0017            
0018            var keyBuff = [UInt8]()
0019            keyBuff += key.utf8
0020            
0021            if let hmac = HMAC.authenticate(key: keyBuff, message: msgBuff) {
0022                return NSData.withBytes(hmac).toHexString()
0023            } else {
0024                Log.error("Unable to create hash, returning hash for empty string.")
0025                return "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
0026            }
0027            
0028        }
0029        
0030    }