您好我需要将 hash_hmac php方法实现为 swift 并尝试这样:
var hexString = ""
var result: [CUnsignedChar]
if let cKey = keyStr.cString(using: String.Encoding.utf8),
let cData = messageStr.cString(using: String.Encoding.utf8)
{
let algo = CCHmacAlgorithm(kCCHmacAlgSHA256)
result = Array(repeating: 0, count: Int(CC_SHA256_DIGEST_LENGTH))
CCHmac(algo, cKey, cKey.count, cData, cData.count, &result)
} else {
fatalError("ERROR...")
}
for byte in result {
hexString += String(format:"%2hhx", UInt8(byte))
}
print(hexString)
但这并不像 PHP 完全那样模拟。
我尝试了这段代码:
let secretData : Data = messageStr.data(using: .utf8)!
let signatureData : Data = keyStr.data(using: .utf8)!
let digest = UnsafeMutablePointer<UInt8>.allocate(capacity:Int(CC_SHA256_DIGEST_LENGTH))
var hmacContext = CCHmacContext()
CCHmacInit(&hmacContext, CCHmacAlgorithm(kCCHmacAlgSHA256), [UInt8](secretData), secretData.count)
CCHmacUpdate(&hmacContext, [UInt8](signatureData), [UInt8](signatureData).count)
CCHmacFinal(&hmacContext, digest)
let cryptData = Data(bytes: digest, count: Int(CC_SHA256_DIGEST_LENGTH))
macStr = cryptData.hexEncodedString()
但它不起作用......
编辑:
消息:a3FQZHJ1Z0hnOFhpZ2xkWg == 8v8Fs6LXKTJOha69tsvUew ==
键: u6KuXJLIUwEUl7noY8J8H1ffDRwLC / 5gjaWW1qTQ3hE =
快速输出: 37987524d1a379d67b2bae0a1618296d48b7a1f058a3b5816bf8070cb2fdf2ec
php输出: 30f39f78a24ae2e6037114708f97fae1f3fede8dabece012a12b6625f3329302
答案 0 :(得分:0)
Swift代码中有错误:
CCHmacInit(&hmacContext, CCHmacAlgorithm(kCCHmacAlgSHA256), [UInt8](secretData), secretData.count)
CCHmacUpdate(&hmacContext, [UInt8](signatureData), [UInt8](signatureData).count)
CCHmacInit
取得钥匙
CCHmacUpdate
获取数据
问题代码有倒退。
注意:
在这种情况下,有一个单击HMAC功能更容易使用,更难出错:
CCHmac(CCHmacAlgorithm algorithm, const void *key, size_t keyLength, const void *data, size_t dataLength, void *macOut);
答案 1 :(得分:0)
我已解决此问题: (Swift 3)
extension Data {
func hexEncodedString() -> String {
return map { String(format: "%02hhx", $0) }.joined()
}
}
func HMAC_CREATOR(MIX_STR mixStr:String,KEY_DATA_UINT8 keyDataUint8:Array<UInt8>) -> String {
let signatureData : Data = mixStr.data(using: .utf8)!
let digest = UnsafeMutablePointer<UInt8>.allocate(capacity:Int(CC_SHA256_DIGEST_LENGTH))
var hmacContext = CCHmacContext()
CCHmacInit(&hmacContext, CCHmacAlgorithm(kCCHmacAlgSHA256), (keyDataUint8), (keyDataUint8.count))
CCHmacUpdate(&hmacContext, [UInt8](signatureData), [UInt8](signatureData).count)
CCHmacFinal(&hmacContext, digest)
let macData = Data(bytes: digest, count: Int(CC_SHA256_DIGEST_LENGTH))
return macData.hexEncodedString()
}