弃用文档部分的示例：

Question

任何人都知道如何在swift中重现PHP哈希方法哈希（'SHA512'，$ value，true）？我尝试使用此代码使用CommonCrypto C库：

extension String {
    func digest(length:Int32, gen:(data: UnsafePointer<Void>, len: CC_LONG, md: UnsafeMutablePointer<UInt8>) -> UnsafeMutablePointer<UInt8>) -> String {
        var cStr = [UInt8](self.utf8)
        var result = [UInt8](count:Int(length), repeatedValue:0)
        gen(data: &cStr, len: CC_LONG(cStr.count), md: &result)
        let output = NSMutableString(capacity:Int(length))
        for r in result {
            output.appendFormat("%02x", r)
        }
        return String(output)
    }
}

并像这样使用它：

var digest = salted.digest(CC_SHA512_DIGEST_LENGTH, gen: {(data, len, md) in CC_SHA512(data,len,md)})

但我没有得到正确的输出

编辑：

我有一些PHP代码：

echo base64_encode(hash('sha512', '8yOrBmkd', true)); // output: rlltLWeWaQCrfNTYMa0CcIs0mfLoHGAynrd+d8H65+rGAzHS/BSWsumwSmcxF9aAG9TIzXx+HOjArPyLL3herg==

我希望我的快速代码输出相同的内容。 Base64编码没问题：

let utf8str = input.dataUsingEncoding(NSUTF8StringEncoding)!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
                let base64Encoded = utf8str!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
                print("Encoded:  \(base64Encoded)")

但散列部分返回的输出与此PHP代码的值相同：

echo base64_encode(hash('sha512', '8yOrBmkd', false)); // output: YWU1OTZkMmQ2Nzk2NjkwMGFiN2NkNGQ4MzFhZDAyNzA4YjM0OTlmMmU4MWM2MDMyOWViNzdlNzdjMWZhZTdlYWM2MDMzMWQyZmMxNDk2YjJlOWIwNGE2NzMxMTdkNjgwMWJkNGM4Y2Q3YzdlMWNlOGMwYWNmYzhiMmY3ODVlYWU=

Answer 1

Swift 3在底部实施。

代码不需要那么复杂或扩展：

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

只需撤回字节数组：

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：

的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)
        }
    }

    // For hexadecimal output:
    return hashData.map { String(format: "%02hhx", $0) }.joined()
    // For Base64 output use this instead of the above:
    // return data.base64EncodedString()
}

弃用文档部分的示例：

HMAC与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String或Data输入进行散列。

name参数将散列函数名称指定为String 支持的功能有MD5，SHA1，SHA224，SHA256，SHA384和SHA512

此示例需要Common Crypto
项目必须有一个桥接标题：
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中。

这些函数采用哈希名称，要散列的消息，密钥并返回摘要：

hashName: name of a hash function as String  
message:  message as Data  
key:      key as Data  
returns:  digest as Data

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: name of a hash function as String
message:  message as String
key:      key as String
returns:  digest as Data

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: name of a hash function as String  
message:  message as String  
key:      key as Data  
returns:  digest as Data

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String或Data输入进行散列。

name参数将散列函数名称指定为String
支持的功能有MD2，MD4，MD5，SHA1，SHA224，SHA256，SHA384和SHA512 一个此示例需要Common Crypto
项目必须有一个桥接标题：
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中。

此函数接受哈希名称和要哈希的字符串并返回数据：

name: A name of a hash function as a String  
string: The String to be hashed  
returns: the hashed result as Data

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>

Answer 2

使用swift 4更新此内容

func sha512Hex( string: String) -> String {
    var digest = [UInt8](repeating: 0, count: Int(CC_SHA512_DIGEST_LENGTH))
    if let data = string.data(using: String.Encoding.utf8) {
        let value =  data as NSData
        CC_SHA512(value.bytes, CC_LONG(data.count), &digest)

    }
    var digestHex = ""
    for index in 0..<Int(CC_SHA512_DIGEST_LENGTH) {
        digestHex += String(format: "%02x", digest[index])
    }

    return digestHex
}


func sha512(string: String) -> [UInt8] {
    var digest = [UInt8](repeating: 0, count: Int(CC_SHA512_DIGEST_LENGTH))
    let data = string.data(using: String.Encoding.utf8 , allowLossyConversion: true)
    let value =  data! as NSData
    CC_SHA512(value.bytes, CC_LONG(value.length), &digest)

    return digest
}

func sha512Base64(string: String) -> String {
    let digest = NSMutableData(length: Int(CC_SHA512_DIGEST_LENGTH))!
    if let data = string.data(using: String.Encoding.utf8) {

        let value =  data as NSData
        let uint8Pointer = UnsafeMutablePointer<UInt8>.allocate(capacity: digest.length)
        CC_SHA512(value.bytes, CC_LONG(data.count), uint8Pointer)

    }
    return digest.base64EncodedString(options: NSData.Base64EncodingOptions([]))
}

测试

    let vad = sha512Hex(string: "8yOrBmkd")
    print(vad)

    let digestRaw = sha512(string:"8yOrBmkd")
    print("decimal array:\n\(digestRaw)")
    print("hexadecimal:\n\(NSData(bytes:digestRaw, length:digestRaw.count).description)")

    let digestBase64 = sha512Base64(string:"8yOrBmkd")
    print("Base64:\n\(digestBase64)")

Answer 3

在iOS13中添加了CryptoKit之后，我们现在有了本机Swift API：

import Foundation
import CryptoKit

// CryptoKit.Digest utils
extension Digest {
    var bytes: [UInt8] { Array(makeIterator()) }
    var data: Data { Data(bytes) }

    var hexStr: String {
        bytes.map { String(format: "%02X", $0) }.joined()
    }
}

func example() {
    guard let data = "hello world".data(using: .utf8) else { return }
    let digest = SHA512.hash(data: data)
    print(digest.data) // 64 bytes
    print(digest.hexStr) // 309ECC489C12D6EB4CC40F50C902F2B4D0ED77EE511A7C7A9BCD3CA86D4CD86F989DD35BC5FF499670DA34255B45B0CFD830E81F605DCF7DC5542E93AE9CD76F
}

在swift中使用SHA512哈希字符串

3 个答案:

弃用文档部分的示例：

}