底部给出了Swift 3的实现。
代码不需要那么复杂或者是一个扩展:
func sha512Hex(string string: String) -> String {
var digest = [UInt8](count: Int(CC_SHA512_DIGEST_LENGTH), repeatedValue: 0)
if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
CC_SHA512(data.bytes, CC_LONG(data.length), &digest)
}
var digestHex = ""
for index in 0..<Int(CC_SHA512_DIGEST_LENGTH) {
digestHex += String(format: "%02x", digest[index])
}
return digestHex
}
//测试:
let hexDigest = sha512Hex(string:"8yOrBmkd")
print("hexDigest:\n\(hexDigest)")
输出:
hexDigest:
ae596d2d67966900ab7cd4d831ad02708b3499f2e81c60329eb77e77c1fae7eac60331d2fc1496b2e9b04a673117d6801bd4c8cd7c7e1ce8c0acfc8b2f785eae
仅返回字节数组:
func sha512(string string: String) -> [UInt8] {
var digest = [UInt8](count: Int(CC_SHA512_DIGEST_LENGTH), repeatedValue: 0)
let data = string.dataUsingEncoding(NSUTF8StringEncoding)!
CC_SHA512(data.bytes, CC_LONG(data.length), &digest)
return digest
}
//测试:
let digestRaw = sha512(string:"8yOrBmkd")
print("decimal array:\n\(digestRaw)")
print("hexadecimal:\n\(NSData(bytes:digestRaw, length:digestRaw.count).description)")
输出:
十进制数组:
[174, 89, 109, 45, 103, 150, 105, 0, 171, 124, 212, 216, 49, 173, 2, 112, 139, 52, 153, 242, 232, 28, 96, 50, 158, 183, 126, 119, 193, 250, 231, 234, 198, 3, 49, 210, 252, 20, 150, 178, 233, 176, 74, 103, 49, 23, 214, 128, 27, 212, 200, 205, 124, 126, 28, 232, 192, 172, 252, 139, 47, 120, 94, 174]
十六进制:
ae596d2d67966900ab7cd4d831ad02708b3499f2e81c60329eb77e77c1fae7eac60331d2fc1496b2e9b04a673117d6801bd4c8cd7c7e1ce8c0acfc8b2f785eae
Base64 输出:
func sha512Base64(string string: String) -> String {
let digest = NSMutableData(length: Int(CC_SHA512_DIGEST_LENGTH))!
if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
CC_SHA512(data.bytes, CC_LONG(data.length), UnsafeMutablePointer<UInt8>(digest.mutableBytes))
}
return digest.base64EncodedStringWithOptions(NSDataBase64EncodingOptions([]))
}
//测试:
let digestBase64 = sha512Base64(string:"8yOrBmkd")
print("Base64:\n\(digestBase64)")
输出:
Base64:
rlltLWeWaQCrfNTYMa0CcIs0mfLoHGAynrd+d8H65+rGAzHS/BSWsumwSmcxF9aAG9TIzXx+HOjArPyLL3herg==
Swift 3
func hashSHA512(data:Data) -> String? {
var hashData = Data(count: Int(CC_SHA512_DIGEST_LENGTH))
_ = hashData.withUnsafeMutableBytes {digestBytes in
data.withUnsafeBytes {messageBytes in
CC_SHA512(messageBytes, CC_LONG(data.count), digestBytes)
}
}
return hashData.map { String(format: "%02hhx", $0) }.joined()
}
弃用文档部分的示例:
使用MD5、SHA1、SHA224、SHA256、SHA384和SHA512进行HMAC(Swift 3+)
这些函数将使用八种加密哈希算法之一哈希字符串或数据输入。
name参数指定哈希函数名称作为字符串
支持的函数有MD5,SHA1,SHA224,SHA256,SHA384和SHA512
此示例需要Common Crypto
必须向项目添加桥接标头:
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中。
这些函数需要一个哈希名称、要哈希的消息、一个密钥并返回一个摘要:
hashName: 哈希函数名称作为字符串
message: 数据形式的消息
key: 数据形式的密钥
returns: 数据形式的摘要
func hmac(hashName:String, message:Data, key:Data) -> Data? {
let algos = ["SHA1": (kCCHmacAlgSHA1, CC_SHA1_DIGEST_LENGTH),
"MD5": (kCCHmacAlgMD5, CC_MD5_DIGEST_LENGTH),
"SHA224": (kCCHmacAlgSHA224, CC_SHA224_DIGEST_LENGTH),
"SHA256": (kCCHmacAlgSHA256, CC_SHA256_DIGEST_LENGTH),
"SHA384": (kCCHmacAlgSHA384, CC_SHA384_DIGEST_LENGTH),
"SHA512": (kCCHmacAlgSHA512, CC_SHA512_DIGEST_LENGTH)]
guard let (hashAlgorithm, length) = algos[hashName] else { return nil }
var macData = Data(count: Int(length))
macData.withUnsafeMutableBytes {macBytes in
message.withUnsafeBytes {messageBytes in
key.withUnsafeBytes {keyBytes in
CCHmac(CCHmacAlgorithm(hashAlgorithm),
keyBytes, key.count,
messageBytes, message.count,
macBytes)
}
}
}
return macData
}
hashName:哈希函数的名称,类型为字符串
message:消息,类型为字符串
key:密钥,类型为字符串
返回值:摘要,类型为数据
func hmac(hashName:String, message:String, key:String) -> Data? {
let messageData = message.data(using:.utf8)!
let keyData = key.data(using:.utf8)!
return hmac(hashName:hashName, message:messageData, key:keyData)
}
hashName:哈希函数的名称,以字符串形式表示
message:消息,以字符串形式表示
key:键,以数据形式表示
返回值:摘要,以数据形式表示
func hmac(hashName:String, message:String, key:Data) -> Data? {
let messageData = message.data(using:.utf8)!
return hmac(hashName:hashName, message:messageData, key:key)
}
// 示例
let clearString = "clearData0123456"
let keyString = "keyData8901234562"
let clearData = clearString.data(using:.utf8)!
let keyData = keyString.data(using:.utf8)!
print("clearString: \(clearString)")
print("keyString: \(keyString)")
print("clearData: \(clearData as NSData)")
print("keyData: \(keyData as NSData)")
let hmacData1 = hmac(hashName:"SHA1", message:clearData, key:keyData)
print("hmacData1: \(hmacData1! as NSData)")
let hmacData2 = hmac(hashName:"SHA1", message:clearString, key:keyString)
print("hmacData2: \(hmacData2! as NSData)")
let hmacData3 = hmac(hashName:"SHA1", message:clearString, key:keyData)
print("hmacData3: \(hmacData3! as NSData)")
输出:
clearString: clearData0123456
keyString: keyData8901234562
clearData: <636c6561 72446174 61303132 33343536>
keyData: <6b657944 61746138 39303132 33343536 32>
hmacData1: <bb358f41 79b68c08 8e93191a da7dabbc 138f2ae6>
hmacData2: <bb358f41 79b68c08 8e93191a da7dabbc 138f2ae6>
hmacData3: <bb358f41 79b68c08 8e93191a da7dabbc 138f2ae6>
MD2、MD4、MD5、SHA1、SHA224、SHA256、SHA384、SHA512(Swift 3+)
这些函数将使用八种加密哈希算法之一对字符串或数据进行哈希。
name参数指定哈希函数名称为字符串
支持的函数包括MD2、MD4、MD5、SHA1、SHA224、SHA256、SHA384和SHA512。
此示例需要Common Crypto
必须向项目添加桥接头文件:
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中。
此函数接受哈希名称和要进行哈希操作的字符串,并返回哈希结果作为数据:
名称:哈希函数名称,类型为字符串
字符串:要进行哈希的字符串
返回值:哈希结果,类型为数据
func hash(name:String, string:String) -> Data? {
let data = string.data(using:.utf8)!
return hash(name:name, data:data)
}
示例:
let clearString = "clearData0123456"
let clearData = clearString.data(using:.utf8)!
print("clearString: \(clearString)")
print("clearData: \(clearData as NSData)")
let hashSHA256 = hash(name:"SHA256", string:clearString)
print("hashSHA256: \(hashSHA256! as NSData)")
let hashMD5 = hash(name:"MD5", data:clearData)
print("hashMD5: \(hashMD5! as NSData)")
输出:
clearString: clearData0123456
clearData: <636c6561 72446174 61303132 33343536>
hashSHA256: <aabc766b 6b357564 e41f4f91 2d494bcc bfa16924 b574abbd ba9e3e9d a0c8920a>
hashMD5: <4df665f7 b94aea69 695b0e7b baf9e9d6>