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/**  需在桥接文件导入头文件 ，因为C语言的库 #import 
   
     #import 
    
      #import 
     
        字符串常用加密：MD5，sha1，base64 使用：  let str = "welcome to hangge.com" let key = "67FG" //  HMAC let hmacStr = str.hmac(algorithm: .SHA1, key: key) print("原始字符串：\(str)") print("key：\(key)") print("HMAC运算结果：\(hmacStr)") //  SHA224 let SHA224 = str.hmac(algorithm: .SHA224, key: key) print("原始字符串：\(str)") print("key：\(key)") print("SHA224运算结果：\(SHA224)") //  md5 let str1 = "欢迎来到zhuhai" let key2 = "你好" let md5 = str1.hmac(algorithm: .MD5, key: key2) print("原始字符串：\(str1)") print("key：\(key2)") print("md5运算结果：\(md5)") //  普通md5 let md55 = str1.md5 print("md55 = \(md55)") //  普通md5测试 print("md测试 = \("lacar我是牛人才怪lacar".md5)") print("md用户测试 = \("用户名".md5)") print("md我们测试 = \("我们".md5)") print("md123测试 = \("123".md5)") print("mdming测试 = \("ming".md5)") print("md你好测试 = \("你好".md5)") print("mdlacar测试 = \("lacar".md5)")  base64的使用： let base64Str = "让天方夜谭天" let encodeStr = base64Str.encodeToBase64() let decodeStr = encodeStr.decodeBase64()  */import UIKitimport Foundationenum CryptoAlgorithm {    case MD5, SHA1, SHA224, SHA256, SHA384, SHA512        var HMACAlgorithm: CCHmacAlgorithm {        var result: Int = 0        switch self {        case .MD5:      result = kCCHmacAlgMD5        case .SHA1:     result = kCCHmacAlgSHA1        case .SHA224:   result = kCCHmacAlgSHA224        case .SHA256:   result = kCCHmacAlgSHA256        case .SHA384:   result = kCCHmacAlgSHA384        case .SHA512:   result = kCCHmacAlgSHA512        }        return CCHmacAlgorithm(result)    }    var digestLength: Int {        var result: Int32 = 0        switch self {        case .MD5:      result = CC_MD5_DIGEST_LENGTH        case .SHA1:     result = CC_SHA1_DIGEST_LENGTH        case .SHA224:   result = CC_SHA224_DIGEST_LENGTH        case .SHA256:   result = CC_SHA256_DIGEST_LENGTH        case .SHA384:   result = CC_SHA384_DIGEST_LENGTH        case .SHA512:   result = CC_SHA512_DIGEST_LENGTH        }        return Int(result)    }}class LYBJiamiExtention: NSObject {    }extension String  {        var md5: String! {        let str = self.cString(using: String.Encoding.utf8)        let strLen = CC_LONG(self.lengthOfBytes(using: String.Encoding.utf8))        let digestLen = Int(CC_MD5_DIGEST_LENGTH)        let result = UnsafeMutablePointer
      
       .allocate(capacity: digestLen)        CC_MD5(str!, strLen, result)        return stringFromBytes(bytes: result, length: digestLen)    }        var sha1: String! {        let str = self.cString(using: String.Encoding.utf8)        let strLen = CC_LONG(self.lengthOfBytes(using: String.Encoding.utf8))        let digestLen = Int(CC_SHA1_DIGEST_LENGTH)        let result = UnsafeMutablePointer
       
        .allocate(capacity: digestLen)        CC_SHA1(str!, strLen, result)        return stringFromBytes(bytes: result, length: digestLen)    }        var sha256String: String! {        let str = self.cString(using: String.Encoding.utf8)        let strLen = CC_LONG(self.lengthOfBytes(using: String.Encoding.utf8))        let digestLen = Int(CC_SHA256_DIGEST_LENGTH)        let result = UnsafeMutablePointer
        
         .allocate(capacity: digestLen) CC_SHA256(str!, strLen, result) return stringFromBytes(bytes: result, length: digestLen) } var sha512String: String! { let str = self.cString(using: String.Encoding.utf8) let strLen = CC_LONG(self.lengthOfBytes(using: String.Encoding.utf8)) let digestLen = Int(CC_SHA512_DIGEST_LENGTH) let result = UnsafeMutablePointer
         
          .allocate(capacity: digestLen) CC_SHA512(str!, strLen, result) return stringFromBytes(bytes: result, length: digestLen) } func stringFromBytes(bytes: UnsafeMutablePointer
          
           , length: Int) -> String{ let hash = NSMutableString() for i in 0..
           
             String { let str = self.cString(using: String.Encoding.utf8) let strLen = Int(self.lengthOfBytes(using: String.Encoding.utf8)) let digestLen = algorithm.digestLength let result = UnsafeMutablePointer
            
             .allocate(capacity: digestLen) let keyStr = key.cString(using: String.Encoding.utf8) let keyLen = Int(key.lengthOfBytes(using: String.Encoding.utf8)) CCHmac(algorithm.HMACAlgorithm, keyStr!, keyLen, str!, strLen, result) let digest = stringFromResult(result: result, length: digestLen) result.deallocate() return digest } private func stringFromResult(result: UnsafeMutablePointer
             
              , length: Int) -> String { let hash = NSMutableString() for i in 0..
              
                String { guard let data = self.data(using: String.Encoding.utf8) else { print("加密失败"); return "" } return data.base64EncodedString(options: Data.Base64EncodingOptions(rawValue: 0)) //系统提供的方法，iOS7之后可用 } /** * Base64 解密 * return 解密字符串 */ func decodeBase64() -> String { guard let data = Data(base64Encoded: self, options: Data.Base64DecodingOptions(rawValue: 0)) else { print("解密失败"); return "" } return String(data: data, encoding: String.Encoding.utf8)! } }
              
             
            
           
          
         
        
       
      
     
    
   

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