如何使用Swift将字符串隐藏到base64中的sha1?
我想隐私privateKey & publicKey shal base64与Swift,但输出不是我在PHP中看到的urlencode base64_encode,我在Codecademy中试过:“https://www.codecademy.com/courses/web-beginner-en-StaFQ/0/3?curriculum_id=5124ef4c78d510dd89003eb8”。如何使用Swift将字符串隐藏到base64中的sha1?
PLS看到夫特和Codecademy网站以下代码:
夫特:
//pls see func dataFromHexadecimalString() details here "http://*.com/questions/26501276/convert-string-to-hex-string-in-swift/26502285#26502285"
extension String {
func dataFromHexadecimalString() -> NSData? {
let trimmedString = self.stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: "<> ")).stringByReplacingOccurrencesOfString(" ", withString: "")
var error: NSError?
let regex = NSRegularExpression(pattern: "^[0-9a-f]*$", options: .CaseInsensitive, error: &error)
let found = regex?.firstMatchInString(trimmedString, options: nil, range: NSMakeRange(0, count(trimmedString)))
if found == nil || found?.range.location == NSNotFound || count(trimmedString) % 2 != 0 {
return nil
}
let data = NSMutableData(capacity: count(trimmedString)/2)
for var index = trimmedString.startIndex; index < trimmedString.endIndex; index = index.successor().successor() {
let byteString = trimmedString.substringWithRange(Range<String.Index>(start: index, end: index.successor().successor()))
let num = UInt8(byteString.withCString { strtoul($0, nil, 16) })
data?.appendBytes([num] as [UInt8], length: 1)
}
return data
}
}
func URLEcodekey() -> String {
let appid="a1b2c34d5e"
let privateKey="ef7d6s0d"
let areaid="101020900"
let time="201507191254"
let publicKey="http://open.weather.com.cn/data/?areaid=\(areaid)&type=forecast_v&date=\(time)&appid=\(appid)"
let cPrivateKey=privateKey.dataUsingEncoding(NSUTF8StringEncoding)!
let cPublicKey=publicKey.dataUsingEncoding(NSUTF8StringEncoding)!
var cHMAC = [CUnsignedChar](count: Int(CC_SHA1_DIGEST_LENGTH), repeatedValue: 0)
CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1), cPublicKey.bytes, Int(cPublicKey.length), cPrivateKey.bytes, Int(cPrivateKey.length), &cHMAC)
let hexKeyString=NSMutableString(capacity: Int(CC_SHA1_DIGEST_LENGTH))
for byte in cHMAC{
hexKeyString.appendFormat("%02hhx", byte)
}
println("hexKeyString:\(encryptedKey)")
let binaryData = hexKeyString.dataFromHexadecimalString()
let base64String = binaryData?.base64EncodedStringWithOptions(nil)
println("base64String:\(base64String)")
var urlEncodeKey=base64String!.stringByAddingPercentEncodingWithAllowedCharacters(.URLHostAllowedCharacterSet())!
println("urlEncodeKey:\(urlEncodeKey)")
return urlEncodeMessage
}
的输出是:
hexKeyString:d4433d42b1505c00a4aa80205171d0d04754d254
base64String:1EM9QrFQXACkqoAgUXHQ0EdU0lQ =
urlEncodeKey:1EM9QrFQXACkqoAgUXHQ0EdU0lQ =
PHP在Codecademy网站:
echo urlencode(base64_encode(hash_hmac('sha1', " http://open.weather.com.cn/data/?areaid=101020900&type=forecast_v&date=201507191254&appid=a1b2c34d5e", "ef7d6s0d", TRUE)));
输出为:
A5O59Y%2BFbGjhVwaI9JNB7DkcX%2F4%3D //输出非常类似于API中的 示例,我认为这可能是正确的。
所以,我怎么能接受正确urlEncodeKey我的专用密钥&公钥像PHP?
非常感谢您提前!
你应该阅读更多关于密码学和散列。在你的情况下,没有公钥,私钥...... SHA代表安全哈希算法和你想要得到的是基于哈希的验证码。查看*有关HMAC,SHA-1,Public key,...的文章,我强烈建议阅读更多关于它的信息,否则如果您误解了它,可能会造成更多的伤害。
回到你的问题。这是在一个字符:
- 斯威夫特码 -
let publicKey="http://open.weather.com.cn...
- PHP代码 -
hash_hmac('sha1', " http://open.weather.com.cn...
你看到问题出在哪里?在您的PHP代码中,在http
之前有一个空格字符。这个字符不在你的Swift代码中。
老实说,我没有检查你的整个代码,因为我不知道你为什么试图从十六进制字符串等转换它。只使用一些零件,并为您重新编写它。这里的工作示例:
func URLEncodedKey() -> String? {
let appid = "a1b2c34d5e"
let time = "201507191254"
let areaid = "101020900"
let key = "ef7d6s0d"
let string = " http://open.weather.com.cn/data/?areaid=\(areaid)&type=forecast_v&date=\(time)&appid=\(appid)"
// ^<- in your PHP example, there's space
guard let keyData = key.dataUsingEncoding(NSUTF8StringEncoding),
stringData = string.dataUsingEncoding(NSUTF8StringEncoding),
outputData = NSMutableData(length: Int(CC_SHA1_DIGEST_LENGTH)) else {
return nil
}
outputData.length = Int(CC_SHA1_DIGEST_LENGTH)
CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1),
keyData.bytes, keyData.length,
stringData.bytes, stringData.length,
outputData.mutableBytes)
return outputData
.base64EncodedStringWithOptions([])
.stringByAddingPercentEncodingWithAllowedCharacters(.URLQueryAllowedCharacterSet())
}
返回值是:
`Optional("A5O59Y+FbGjhVwaI9JNB7DkcX/4=")`
这是当你解码你的PHP输出你会得到什么。
只需更换URLQueryAllowedCharacterSet
与下列任何字符集:
class func URLUserAllowedCharacterSet() -> NSCharacterSet
class func URLPasswordAllowedCharacterSet() -> NSCharacterSet
class func URLHostAllowedCharacterSet() -> NSCharacterSet
class func URLPathAllowedCharacterSet() -> NSCharacterSet
class func URLQueryAllowedCharacterSet() -> NSCharacterSet
class func URLFragmentAllowedCharacterSet() -> NSCharacterSet
取决于你的使用情况。 IOW您想要使用的网址的哪一部分。
自从早上起,我一直在为同样的问题而战!感谢Steve的解决方案! :) –