在Swift 2中,我使用以下代码扩展了字符串变量,并能够制作sha1,sha256和md5。
移至Swift 3之后,该代码不再起作用!我尝试将其转换,但是遇到连续错误。
知道我该如何解决吗?
extension NSData {
func hexString() -> String {
var string = String()
for i in UnsafeBufferPointer<UInt8>(start: UnsafeMutablePointer<UInt8>(bytes), count: length) {
string += Int(i).hexString()
}
return string
}
func MD5() -> NSData {
let result = NSMutableData(length: Int(CC_MD5_DIGEST_LENGTH))!
CC_MD5(bytes, CC_LONG(length), UnsafeMutablePointer<UInt8>(result.mutableBytes))
return NSData(data: result)
}
func SHA1() -> NSData {
let result = NSMutableData(length: Int(CC_SHA1_DIGEST_LENGTH))!
CC_SHA1(bytes, CC_LONG(length), UnsafeMutablePointer<UInt8>(result.mutableBytes))
return NSData(data: result)
}
func SHA256() -> NSData {
let result = NSMutableData(length: Int(CC_SHA256_DIGEST_LENGTH))
CC_SHA256(bytes, CC_LONG(length), UnsafeMutablePointer(result!.mutableBytes))
return NSData(data: result!)
}
}
extension String {
func hexString() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.hexString()
}
func MD5() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.MD5().hexString()
}
func SHA1() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.SHA1().hexString()
}
func SHA256() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.SHA256().hexString()
}
}
您最好Data
在Swift 3中使用Swift 。
并且在使用时Data
,您需要分别在使用withUnsafeBytes(_:)
或的withUnsafeMutableBytes(_:)
地方使用bytes
或mutableBytes
。
extension Data {
func hexString() -> String {
let string = self.map{Int($0).hexString()}.joined()
return string
}
func MD5() -> Data {
var result = Data(count: Int(CC_MD5_DIGEST_LENGTH))
_ = result.withUnsafeMutableBytes {resultPtr in
self.withUnsafeBytes {(bytes: UnsafePointer<UInt8>) in
CC_MD5(bytes, CC_LONG(count), resultPtr)
}
}
return result
}
/*
... nearly the same for `SHA1` and `SHA256`.
*/
}
extension String {
func hexString() -> String {
return self.data(using: .utf8)!.hexString()
}
func MD5() -> String {
return self.data(using: .utf8)!.MD5().hexString()
}
/*
... nearly the same for `SHA1` and `SHA256`.
*/
}
与无参数方法相比(相对轻的任务),我更喜欢计算属性。您需要使用它们来修复所有零件,但是您可以编写如下内容:
extension Int {
var hexString: String {
return ...
}
}
extension Data {
var hexString: String {
let string = self.map{Int($0).hexString}.joined()
return string
}
var MD5: Data {
var result = Data(count: Int(CC_MD5_DIGEST_LENGTH))
_ = result.withUnsafeMutableBytes {resultPtr in
self.withUnsafeBytes {(bytes: UnsafePointer<UInt8>) in
CC_MD5(bytes, CC_LONG(count), resultPtr)
}
}
return result
}
/*
... nearly the same for `SHA1` and `SHA256`.
*/
}
extension String {
var hexString: String {
return self.data(using: .utf8)!.hexString
}
var MD5: String {
return self.data(using: .utf8)!.MD5.hexString
}
/*
... nearly the same for `SHA1` and `SHA256`.
*/
}
使用可能可以更快地修复代码NSData
,但是我建议您使用Data
Swift 3。
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句