[英]SHA256 in Swift - Importing framework issue
I'm trying to use CC_SHA256_DIGEST_LENGTH in one of my functions in Swift and it throws an error because it cannot find that symbol. 我试图在Swift中的一个函数中使用CC_SHA256_DIGEST_LENGTH,它会抛出一个错误,因为它无法找到该符号。 I've tried everything, importing CommonCrypto in the bridge-header and trying that .map solution.. Nothing works.
我已经尝试了一切,在桥头中导入CommonCrypto并尝试使用.map解决方案。没有任何作用。
How can I use CC_SHA256_DIGEST_LENGTH in Swift? 如何在Swift中使用CC_SHA256_DIGEST_LENGTH? All the solutions seems to have stopped working.
所有解决方案似乎都停止了工作。 Thank you!
谢谢!
Add the following line to your bridging header: 将以下行添加到桥接标头:
#import <CommonCrypto/CommonHMAC.h>
Swift 2.x example: Swift 2.x示例:
func doSha256(#dataIn:NSData) -> NSData {
var shaOut: NSMutableData! = NSMutableData(length: Int(CC_SHA256_DIGEST_LENGTH));
CC_SHA256(dataIn.bytes, CC_LONG(dataIn.length), UnsafeMutablePointer<UInt8>(shaOut.mutableBytes));
return shaOut;
}
Swift 3.0 example: Swift 3.0示例:
func hashSHA256(data:Data) -> Data? {
var hashData = Data(count: Int(CC_SHA256_DIGEST_LENGTH))
_ = hashData.withUnsafeMutableBytes {digestBytes in
data.withUnsafeBytes {messageBytes in
CC_SHA256(messageBytes, CC_LONG(data.count), digestBytes)
}
}
return hashData
}
let clearData = "clearData0123456".data(using:String.Encoding.utf8)!
print("clearData: \(clearData.map { String(format: "%02hhx", $0) }.joined())")
let hash = hashSHA256(data:clearData)
print("hash: \(hash!.map { String(format: "%02hhx", $0) }.joined())")
Output: 输出:
clearData:
636c6561724461746130313233343536
clearData:
636c6561724461746130313233343536
hash:aabc766b6b357564e41f4f912d494bccbfa16924b574abbdba9e3e9da0c8920a
哈希:
aabc766b6b357564e41f4f912d494bccbfa16924b574abbdba9e3e9da0c8920a
I don't have any frameworks added in the target Build Phases. 我没有在目标Build Phases中添加任何框架。
Be are you sure that the bridging-header is set up correctly? 你确定桥接头设置正确吗? I added mine by adding a .m file and let the system automatically add the bridging-header and update any target settings.
我通过添加.m文件添加了我的内容,让系统自动添加桥接头并更新任何目标设置。
General hash method moved from the sunsetted documentation section:
从日落文档部分移动的常规哈希方法:
This function takes a hash name and Data to be hashed and returns a Data: 此函数采用哈希名称和数据进行哈希处理并返回数据:
name: A name of a hash function as a String data: The Data to be hashed returns: the hashed result as Data
func hash(name:String, data:Data) -> Data? {
let algos = ["MD2": (CC_MD2, CC_MD2_DIGEST_LENGTH),
"MD4": (CC_MD4, CC_MD4_DIGEST_LENGTH),
"MD5": (CC_MD5, CC_MD5_DIGEST_LENGTH),
"SHA1": (CC_SHA1, CC_SHA1_DIGEST_LENGTH),
"SHA224": (CC_SHA224, CC_SHA224_DIGEST_LENGTH),
"SHA256": (CC_SHA256, CC_SHA256_DIGEST_LENGTH),
"SHA384": (CC_SHA384, CC_SHA384_DIGEST_LENGTH),
"SHA512": (CC_SHA512, CC_SHA512_DIGEST_LENGTH)]
guard let (hashAlgorithm, length) = algos[name] else { return nil }
var hashData = Data(count: Int(length))
_ = hashData.withUnsafeMutableBytes {digestBytes in
data.withUnsafeBytes {messageBytes in
hashAlgorithm(messageBytes, CC_LONG(data.count), digestBytes)
}
}
return hashData
}
Note: MD2, MD4, MD5 and SHA1 should not be used in new work, they are no longer secure for message digest usage. 注意:MD2,MD4,MD5和SHA1不应在新工作中使用,它们对于消息摘要的使用不再安全。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.