我正在尝试在Swift中创建字符串的HMAC SHA-1哈希,但是由于它似乎没有导入CommonCrypto框架,因此无法弄清楚如何与API进行交互。我尝试了各种不同形式的“ import CommonCrypto”并创建了一个桥接头文件,但没有一个起作用。
奇怪的是,如果我创建一个Objective-C类,那么我就可以与API交互而不会出现任何问题,因此这似乎是Swift特有的。
另外,如果有人可以告诉我uint8_t digest[CC_SHA1_DIGEST_LENGTH]Swift中的等效内容,我将不胜感激
uint8_t digest[CC_SHA1_DIGEST_LENGTH]
您可以在Swift中完成。只要确保您添加#import <CommonCrypto/CommonHMAC.h>到桥接Objective-C桥接头即可。
#import <CommonCrypto/CommonHMAC.h>
更新: 对于Swift 4,请在此处使用Swift Package Manager查看更好的解决方案:https : //github.com/jernejstrasner/SwiftCrypto
enum CryptoAlgorithm { case MD5, SHA1, SHA224, SHA256, SHA384, SHA512 var HMACAlgorithm: CCHmacAlgorithm { var result: Int = 0 switch self { case .MD5: result = kCCHmacAlgMD5 case .SHA1: result = kCCHmacAlgSHA1 case .SHA224: result = kCCHmacAlgSHA224 case .SHA256: result = kCCHmacAlgSHA256 case .SHA384: result = kCCHmacAlgSHA384 case .SHA512: result = kCCHmacAlgSHA512 } return CCHmacAlgorithm(result) } var digestLength: Int { var result: Int32 = 0 switch self { case .MD5: result = CC_MD5_DIGEST_LENGTH case .SHA1: result = CC_SHA1_DIGEST_LENGTH case .SHA224: result = CC_SHA224_DIGEST_LENGTH case .SHA256: result = CC_SHA256_DIGEST_LENGTH case .SHA384: result = CC_SHA384_DIGEST_LENGTH case .SHA512: result = CC_SHA512_DIGEST_LENGTH } return Int(result) } } extension String { func hmac(algorithm: CryptoAlgorithm, key: String) -> String { let str = self.cStringUsingEncoding(NSUTF8StringEncoding) let strLen = Int(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)) let digestLen = algorithm.digestLength let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen) let keyStr = key.cStringUsingEncoding(NSUTF8StringEncoding) let keyLen = Int(key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)) CCHmac(algorithm.HMACAlgorithm, keyStr!, keyLen, str!, strLen, result) let digest = stringFromResult(result, length: digestLen) result.dealloc(digestLen) return digest } private func stringFromResult(result: UnsafeMutablePointer<CUnsignedChar>, length: Int) -> String { var hash = NSMutableString() for i in 0..<length { hash.appendFormat("%02x", result[i]) } return String(hash) } }