Javascript 跨语言HMAC/SHA256/Base64的问题

我正在使用node.js脚本为azure documentDB创建签名-简化版本为（结果在底部）：-

这行得通，而且做了我需要的。我正试图用Swift和CommonCrypto做同样的事情

let keyString = "ABCDE"
let body = "FGHIJ"

let utf8data = keyString.dataUsingEncoding(NSUTF8StringEncoding)
let key = utf8data!.base64EncodedDataWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

let str = body.cStringUsingEncoding(NSUTF8StringEncoding)
let strLen = body.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)
let digestLen = Int(CC_SHA256_DIGEST_LENGTH)
let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)

CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), key.bytes, key.length, str!, strLen, result);

var hmacData = NSData(bytes: result, length: digestLen)
var hmacBase64 = hmacData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

result.dealloc(digestLen)

let signature = String(hmacBase64)

let test = "RNkID54/1h1H9p3NWPeRA0mOW2L0c0HUJGTTY2GPbDo="
XCTAssert(test == signature, "Pass")

想法

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更多信息-此：-

let keyString = "ABCDE"
let body = "FGHIJ"

let keyData = keyString.dataUsingEncoding(NSUTF8StringEncoding)! // .base64EncodedDataWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
let bodyData = body.dataUsingEncoding(NSUTF8StringEncoding)!

let digestLen = Int(CC_SHA256_DIGEST_LENGTH)
let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)

CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), keyData.bytes, keyData.length, bodyData.bytes, bodyData.length, result);

var hmacData = NSData(bytes: result, length: digestLen)
var hmacBase64 = hmacData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

result.dealloc(digestLen)

let signature = String(hmacBase64)

let test = "FA372zbobgpTLI5cQWh5YFiFwkNhMI8womX4Cvw68YE=" // "RNkID54/1h1H9p3NWPeRA0mOW2L0c0HUJGTTY2GPbDo="
XCTAssert(test == signature, "Pass")

---

您可以在此处找到有效的解决方案：

var key = new Buffer(masterKey, "base64");

let keyString = "ABCDE"
let body = "FGHIJ"

let keyData = keyString.dataUsingEncoding(NSUTF8StringEncoding)! // .base64EncodedDataWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
let bodyData = body.dataUsingEncoding(NSUTF8StringEncoding)!

let digestLen = Int(CC_SHA256_DIGEST_LENGTH)
let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)

CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), keyData.bytes, keyData.length, bodyData.bytes, bodyData.length, result);

var hmacData = NSData(bytes: result, length: digestLen)
var hmacBase64 = hmacData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

result.dealloc(digestLen)

let signature = String(hmacBase64)

let test = "FA372zbobgpTLI5cQWh5YFiFwkNhMI8womX4Cvw68YE=" // "RNkID54/1h1H9p3NWPeRA0mOW2L0c0HUJGTTY2GPbDo="
XCTAssert(test == signature, "Pass")

var crypto = require("crypto");

var masterKey = "ABCDE"
var signature = crypto.createHmac("sha256", masterKey).update("FGHIJ").digest("base64");

console.log("\n\n"+signature)

// FA372zbobgpTLI5cQWh5YFiFwkNhMI8womX4Cvw68YE=