如何在swift 2&中使用通用加密和/或计算sha256 3 [英] How to use common crypto and/or calculate sha256 in swift 2 & 3
问题描述
我正在尝试根据sha256将哈希值设为密码值.我已经搜索过此文件，但没有有关swift 2的信息.此解决方案对我不起作用
I am trying to make hash a password value according to sha256. I already search this but there is no info about swift 2. This solution did not worked for me
func sha256(data:String) -> String {
let data = self.dataUsingEncoding(NSUTF8StringEncoding)!
var digest = [UInt8](count:Int(CC_SHA256_DIGEST_LENGTH), repeatedValue: 0)
CC_SHA256(data.bytes, CC_LONG(data.length), &digest)
let hexBytes = digest.map { String(format: "%02hhx", $0) }
return hexBytes.joinWithSeparator("")
}
出现错误:使用未解析的标识符CC_SHA256_DIGEST_LENGTH
It gives error: Use of unresolved identifier CC_SHA256_DIGEST_LENGTH
推荐答案
添加桥接标头并将导入内容添加到其中:
#import <CommonCrypto/CommonDigest.h>
Add a bridging header and add the import to it:
#import <CommonCrypto/CommonDigest.h>
迅速3:
func sha256(string: String) -> Data? {
guard let messageData = string.data(using:String.Encoding.utf8) else { return nil }
var digestData = Data(count: Int(CC_SHA256_DIGEST_LENGTH))
_ = digestData.withUnsafeMutableBytes {digestBytes in
messageData.withUnsafeBytes {messageBytes in
CC_SHA256(messageBytes, CC_LONG(messageData.count), digestBytes)
}
}
return digestData
}
//测试
let shaData = sha256(string:"Here is the test string")
let shaHex = shaData!.map { String(format: "%02hhx", $0) }.joined()
print("shaHex: \(shaHex)")
shaHex:6f5c446883a3049caf8368b4bad2d2ff045a39d467ee20a8d34d5698e649fe21
shaHex: 6f5c446883a3049caf8368b4bad2d2ff045a39d467ee20a8d34d5698e649fe21
迅速2:
func sha256(string string: String) -> NSData {
let digest = NSMutableData(length: Int(CC_SHA256_DIGEST_LENGTH))!
if let data :NSData = string.dataUsingEncoding(NSUTF8StringEncoding) {
CC_SHA256(data.bytes, CC_LONG(data.length),
UnsafeMutablePointer<UInt8>(digest.mutableBytes))
}
return digest
}
//测试:
let digest = sha256(string:"Here is the test string")
print("digest: \(digest)")
输出:
摘要:6f5c4468 83a3049c af8368b4 bad2d2ff 045a39d4 67ee20a8 d34d5698 e649fe21
digest: 6f5c4468 83a3049c af8368b4 bad2d2ff 045a39d4 67ee20a8 d34d5698 e649fe21
已淘汰的文档部分的示例:
具有MD5，SHA1，SHA224，SHA256，SHA384，SHA512(Swift 3+)的HMAC
这些函数将使用八种密码哈希算法之一来哈希String或Data输入.
These functions will hash either String or Data input with one of eight cryptographic hash algorithms.
name参数将哈希函数名称指定为String 支持的功能是MD5，SHA1，SHA224，SHA256，SHA384和SHA512
The name parameter specifies the hash function name as a String Supported functions are MD5, SHA1, SHA224, SHA256, SHA384 and SHA512
此示例需要通用加密货币
必须有一个项目的桥接头:
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中.
This example requires Common Crypto
It is necessary to have a bridging header to the project:
#import <CommonCrypto/CommonCrypto.h>
Add the Security.framework to the project.
这些函数采用哈希名称，要哈希的消息，密钥并返回摘要:
These functions takes a hash name, message to be hashed, a key and return a digest:
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
// Examples
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密码哈希算法之一对String或Data输入进行哈希.
These functions will hash either String or Data input with one of eight cryptographic hash algorithms.
name参数将哈希函数名称指定为String
支持的功能是MD2，MD4，MD5，SHA1，SHA224，SHA256，SHA384和SHA512
一种
此示例需要通用加密
必须有一个项目的桥接头:
#import <CommonCrypto/CommonCrypto.h>
将Security.framework添加到项目中.
The name parameter specifies the hash function name as a String
Supported functions are MD2, MD4, MD5, SHA1, SHA224, SHA256, SHA384 and SHA512
a
This example requires Common Crypto
It is necessary to have a bridging header to the project:
#import <CommonCrypto/CommonCrypto.h>
Add the Security.framework to the project.
此函数接受要哈希的哈希名称和String并返回一个数据:
This function takes a hash name and String to be hashed and returns a Data:
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>
这篇关于如何在swift 2&中使用通用加密和/或计算sha256 3的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
