使用签名方法 v3 的公共参数Authorization生成的测试用例。

Change-Id: Ie32a0fe94d6a07ba8a90e89ed96254ab01d02c7b

Author: SundoggyNew

sdk/video-link-android/src/test/java/com/tencent/iot/explorer/video/SignForV3Test.kt

@@ -0,0 +1,169 @@
+package com.tencent.iot.explorer.video
+
+import android.util.Log
+import com.alibaba.fastjson.JSON
+import junit.framework.TestCase
+import org.junit.Test
+import java.lang.Long
+import java.nio.charset.Charset
+import java.security.InvalidKeyException
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+import java.text.SimpleDateFormat
+import java.util.*
+import javax.crypto.Mac
+import javax.crypto.spec.SecretKeySpec
+import kotlin.experimental.and
+
+class SignForV3Test {
+
+    private var secretId = "YourSecretId"
+    private var secretKey = "YourSecretKey"
+    private var VIDEO_SERVICE = "iotvideo" // video
+
+    companion object {
+        val UTF8: Charset = Charset.forName("UTF-8")
+
+        val REST_HOST_URL = ".tencentcloudapi.com"
+    }
+
+    @Test
+    fun testSign() {
+        try {
+            var headerParams = commonHeaderParams("DescribeCloudStorageDate", "2020-12-15")
+            val param = TreeMap<String, Any>()
+            param["ProductId"] = "productId"
+            param["DeviceName"] = "devName"
+            val authorization = generateAuthorization(VIDEO_SERVICE, headerParams, param)
+            println(authorization)
+            TestCase.assertTrue(true)
+        } catch (e: java.lang.Exception) {
+            e.printStackTrace()
+            TestCase.fail()
+        }
+    }
+
+    fun commonHeaderParams(action: String, version: String): HashMap<String, String> {
+        val param = HashMap<String, String>()
+        param["X-TC-Action"] = action
+        param["X-TC-Version"] = version
+        param["X-TC-Region"] = "ap-guangzhou"
+        param["X-TC-Timestamp"] = (System.currentTimeMillis() / 1000).toString()
+        return param
+    }
+
+    open fun generateAuthorization(
+            service: String,
+            headers: Map<String, String>,
+            param: TreeMap<String, Any>
+    ): String? {
+        val algorithm = "TC3-HMAC-SHA256"
+        val timestamp: String = headers?.get("X-TC-Timestamp") as String
+        val sdf = SimpleDateFormat("yyyy-MM-dd")
+        // 注意时区，否则容易出错
+        sdf.timeZone = TimeZone.getTimeZone("UTC")
+        val date =
+                sdf.format(Date(Long.valueOf(timestamp + "000")))
+
+        // ************* 步骤 1：拼接规范请求串 *************
+        val httpRequestMethod = "POST"
+        val canonicalUri = "/"
+        val canonicalQueryString = ""
+        val canonicalHeadersBuilder = "content-type:application/json; charset=utf-8\nhost:${service}${REST_HOST_URL}\n"
+        val signedHeadersBuilder = "content-type;host"
+        val canonicalHeaders = canonicalHeadersBuilder
+        val signedHeaders = signedHeadersBuilder.toLowerCase()
+
+        // 将Extra参数加到待签名字符串中，否则会签名失败
+        var payload: String? = toJson(param)
+        val hashedRequestPayload: String? = payload?.let { sha256Hex(it) }
+        val canonicalRequest = "${httpRequestMethod}\n${canonicalUri}\n${canonicalQueryString}\n${canonicalHeaders}\n${signedHeaders}\n${hashedRequestPayload}"
+        println(canonicalRequest)
+
+        // ************* 步骤 2：拼接待签名字符串 *************
+        val credentialScope = "$date/$service/tc3_request"
+        val hashedCanonicalRequest: String? = sha256Hex(canonicalRequest)
+        val stringToSign =
+                """
+            $algorithm
+            $timestamp
+            $credentialScope
+            $hashedCanonicalRequest
+            """.trimIndent()
+        println(stringToSign)
+
+        // ************* 步骤 3：计算签名 *************  SecretKey
+        val secretDate: ByteArray = hmac256(
+                ("TC3" + secretKey).toByteArray(UTF8),
+                date
+        )
+        val secretService: ByteArray = hmac256(secretDate, service)
+        val secretSigning: ByteArray = hmac256(
+                secretService,
+                "tc3_request"
+        )
+        val byteArray: ByteArray = hmac256(secretSigning, stringToSign)
+        val signature: String? = encodeHexString(byteArray)
+
+        // ************* 步骤 4：拼接 Authorization ************* SecretId
+        return algorithm + " " + "Credential=" + secretId + "/" + credentialScope + ", " + "SignedHeaders=" + signedHeaders + ", " + "Signature=" + signature
+    }
+
+    /**
+     * 功能描述：把指定的java对象转为json数据
+     */
+    fun toJson(clazz: Any?): String? {
+        return try {
+            JSON.toJSONString(clazz)
+        } catch (e: Exception) {
+            Log.e("ToJsonEntity", "fastjson转换错误：${e.message} \n原因是：${e.cause}")
+            null
+        }
+    }
+
+    open fun sha256Hex(s: String): String? {
+        var md: MessageDigest? = null
+        var d: ByteArray? = null
+        try {
+            md = MessageDigest.getInstance("SHA-256")
+            d = md.digest(s.toByteArray(UTF8))
+        } catch (e: NoSuchAlgorithmException) {
+            e.printStackTrace()
+        }
+        return d?.let { encodeHexString(it)?.toLowerCase() }
+    }
+
+    open fun encodeHexString(byteArray: ByteArray): String? {
+        val hexStringBuffer = StringBuffer()
+        for (i in byteArray.indices) {
+            hexStringBuffer.append(
+                    byteToHex(
+                            byteArray[i]
+                    )
+            )
+        }
+        return hexStringBuffer.toString()
+    }
+
+    open fun byteToHex(num: Byte): String? {
+        val hexDigits = CharArray(2)
+        hexDigits[0] = Character.forDigit((num.toInt() shr 4) and 0xF, 16)
+        hexDigits[1] = Character.forDigit((num and 0xF).toInt(), 16)
+        return String(hexDigits)
+    }
+
+    open fun hmac256(key: ByteArray, msg: String): ByteArray {
+        var mac: Mac? = null
+        try {
+            mac = Mac.getInstance("HmacSHA256")
+            val secretKeySpec =
+                    SecretKeySpec(key, mac.algorithm)
+            mac.init(secretKeySpec)
+        } catch (e: NoSuchAlgorithmException) {
+            e.printStackTrace()
+        } catch (e: InvalidKeyException) {
+            e.printStackTrace()
+        }
+        return mac!!.doFinal(msg.toByteArray(UTF8))
+    }
+}