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求腾讯云直播UserSign签名的.NET代码

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[待解决问题]

官方只有java的,求转换成.net可用的代码。代码我贴2楼。

问题补充:
import java.io.File;
import java.io.FileInputStream;
import java.nio.charset.Charset;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Arrays;
import java.util.Base64;
import java.util.zip.Deflater;

public class WebRTCSigApi {
private int mSdkAppid = 0;
private PrivateKey mPrivateKey = null;
private PublicKey mPublicKey = null;
 
/**
* 设置sdkappid
* @param sdkappid
*/
public void setSdkAppid(int sdkappid) {
this.mSdkAppid = sdkappid;
}
 
/**
* 设置私钥 如果要生成userSig和privateMapKey则需要私钥
* @param privateKey 私钥文件内容
*/
public void setPrivateKey(String privateKey) {
String privateKeyPEM = privateKey.replace("-----BEGIN PRIVATE KEY-----", "")
.replace("-----END PRIVATE KEY-----", "")
.replace("\n", "");
byte[] encodedKey = Base64.getDecoder().decode(privateKeyPEM.getBytes());
 
try {
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey);
KeyFactory keyFactory = KeyFactory.getInstance("EC");
this.mPrivateKey = keyFactory.generatePrivate(keySpec);
} catch (Exception e) {
e.printStackTrace();
}
}
 
/**
* 设置公钥 如果要验证userSig和privateMapKey则需要公钥
* @param publicKey 公钥文件内容
*/
public void setPublicKey(String publicKey) {
String publicKeyPEM = publicKey.replace("-----BEGIN PUBLIC KEY-----", "")
.replace("-----END PUBLIC KEY-----", "")
.replace("\n", "");
byte[] encodedKey = Base64.getDecoder().decode(publicKeyPEM.getBytes());
 
try {
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey);
KeyFactory keyFactory = KeyFactory.getInstance("EC");
this.mPublicKey = keyFactory.generatePublic(keySpec);
} catch (Exception e) {
e.printStackTrace();
}
}
 
/**
* ECDSA-SHA256签名
* @param data 需要签名的数据
* @return 签名
*/
public byte[] sign(byte[] data) {
try {
Signature signer = Signature.getInstance("SHA256withECDSA");
signer.initSign(this.mPrivateKey);
signer.update(data);
return signer.sign();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
 
/**
* 验证ECDSA-SHA256签名
* @param data 需要验证的数据原文
* @param sig 需要验证的签名
* @return true:验证成功 false:验证失败
*/
public boolean verify(byte[] data, byte[] sig) {
try {
Signature signer = Signature.getInstance("SHA256withECDSA");
signer.initVerify(this.mPublicKey);
signer.update(data);
return signer.verify(sig);
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
 
/**
* 用于url的base64encode
* '+' => '*', '/' => '-', '=' => '_'
* @param data 需要编码的数据
* @return 编码后的base64数据
*/
private byte[] base64UrlEncode(byte[] data) {
byte[] encode = Base64.getEncoder().encode(data);
for (int i = 0; i < encode.length; i++) {
if (encode[i] == '+') {
encode[i] = '*';
} else if (encode[i] == '/') {
encode[i] = '-';
} else if (encode[i] == '=') {
encode[i] = '_';
}
}
return encode;
}
 
/**
* 用于url的base64decode
* '*' => '+', '-' => '/', '_' => '='
* @param data 需要解码的数据
* @return 解码后的数据
*/
private byte[] base64UrlDecode(byte[] data) {
byte[] encode = Arrays.copyOf(data, data.length);
for (int i = 0; i < encode.length; i++) {
if (encode[i] == '*') {
encode[i] = '+';
} else if (encode[i] == '-') {
encode[i] = '/';
} else if (encode[i] == '_') {
encode[i] = '=';
}
}
return encode;
}
 
/**
* 生成userSig
* @param userid 用户名
* @param expire userSig有效期,出于安全考虑建议为300秒,您可以根据您的业务场景设置其他值。
* @return 生成的userSig
*/
public String genUserSig(String userid, int expire) {
String time = String.valueOf(System.currentTimeMillis()/1000);
String serialString =
"TLS.appid_at_3rd:" + 0 + "\n" +
"TLS.account_type:" + 0 + "\n" +
"TLS.identifier:" + userid + "\n" +
"TLS.sdk_appid:" + this.mSdkAppid + "\n" +
"TLS.time:" + time + "\n" +
"TLS.expire_after:" + expire +"\n";
 
byte[] signBytes = sign(serialString.getBytes(Charset.forName("UTF-8")));
String sig = Base64.getEncoder().encodeToString(signBytes);
 
String jsonString = "{"
+ "\"TLS.account_type\":\"" + 0 +"\","
+"\"TLS.identifier\":\"" + userid +"\","
+"\"TLS.appid_at_3rd\":\"" + 0 +"\","
+"\"TLS.sdk_appid\":\"" + this.mSdkAppid +"\","
+"\"TLS.expire_after\":\"" + expire +"\","
+"\"TLS.sig\":\"" + sig +"\","
+"\"TLS.time\":\"" + time +"\","
+"\"TLS.version\": \"201512300000\""
+"}";
 
//compression
Deflater compresser = new Deflater();
compresser.setInput(jsonString.getBytes(Charset.forName("UTF-8")));
 
compresser.finish();
byte [] compressBytes = new byte [512];
int compressBytesLength = compresser.deflate(compressBytes);
compresser.end();
String userSig = new String(base64UrlEncode(Arrays.copyOfRange(compressBytes, 0, compressBytesLength)));
 
return userSig;
}
 
/**
* 生成privateMapKey
* @param userid 用户名
* @param roomid 房间号
* @param expire privateMapKey有效期,出于安全考虑建议为300秒,您可以根据您的业务场景设置其他值。
* @return 生成的privateMapKey
*/
public String genPrivateMapKey(String userid, int roomid, int expire) {
String time = String.valueOf(System.currentTimeMillis()/1000);
 
//视频校验位需要用到的字段
/*
cVer unsigned char/1 版本号,填0
wAccountLen unsigned short /2 第三方自己的帐号长度
buffAccount wAccountLen 第三方自己的帐号字符
dwSdkAppid unsigned int/4 sdkappid
dwRoomId unsigned int/4 群组号码
dwExpTime unsigned int/4 过期时间 (当前时间 + 有效期(单位:秒,建议300秒))
dwPrivilegeMap unsigned int/4 权限位
dwAccountType unsigned int/4 第三方帐号类型
*/
int accountLength = userid.length();
int offset = 0;
byte[] bytes = new byte[1+2+accountLength+4+4+4+4+4];

//cVer
bytes[offset++] = 0;

//wAccountLen
bytes[offset++] = (byte)((accountLength & 0xFF00) >> 8);
bytes[offset++] = (byte)(accountLength & 0x00FF);
 
//buffAccount
for (; offset < 3 + accountLength; ++offset) {
bytes[offset] = (byte)userid.charAt(offset - 3);
}

//dwSdkAppid
bytes[offset++] = (byte)((this.mSdkAppid & 0xFF000000) >> 24);
bytes[offset++] = (byte)((this.mSdkAppid & 0x00FF0000) >> 16);
bytes[offset++] = (byte)((this.mSdkAppid & 0x0000FF00) >> 8);
bytes[offset++] = (byte)(this.mSdkAppid & 0x000000FF);
 
//dwAuthId
long nRoomId = Long.valueOf(roomid);
bytes[offset++] = (byte)((nRoomId & 0xFF000000) >> 24);
bytes[offset++] = (byte)((nRoomId & 0x00FF0000) >> 16);
bytes[offset++] = (byte)((nRoomId & 0x0000FF00) >> 8);
bytes[offset++] = (byte)(nRoomId & 0x000000FF);
 
//dwExpTime
long expiredTime = Long.valueOf(time) + expire;
bytes[offset++] = (byte)((expiredTime & 0xFF000000) >> 24);
bytes[offset++] = (byte)((expiredTime & 0x00FF0000) >> 16);
bytes[offset++] = (byte)((expiredTime & 0x0000FF00) >> 8);
bytes[offset++] = (byte)(expiredTime & 0x000000FF);

//dwPrivilegeMap
bytes[offset++] = (byte)((255 & 0xFF000000) >> 24);
bytes[offset++] = (byte)((255 & 0x00FF0000) >> 16);
bytes[offset++] = (byte)((255 & 0x0000FF00) >> 8);
bytes[offset++] = (byte)(255 & 0x000000FF);
 
//dwAccountType
bytes[offset++] = (byte)((0 & 0xFF000000) >> 24);
bytes[offset++] = (byte)((0 & 0x00FF0000) >> 16);
bytes[offset++] = (byte)((0 & 0x0000FF00) >> 8);
bytes[offset++] = (byte)(0 & 0x000000FF);
 
String userbuf = Base64.getEncoder().encodeToString(bytes);
 
String serialString =
"TLS.appid_at_3rd:" + 0 + "\n" +
"TLS.account_type:" + 0 + "\n" +
"TLS.identifier:" + userid + "\n" +
"TLS.sdk_appid:" + this.mSdkAppid + "\n" +
"TLS.time:" + time + "\n" +
"TLS.expire_after:" + expire +"\n" +
"TLS.userbuf:" + userbuf + "\n";
 
byte[] signBytes = sign(serialString.getBytes(Charset.forName("UTF-8")));
String sig = Base64.getEncoder().encodeToString(signBytes);
 
String jsonString = "{"
+"\"TLS.appid_at_3rd\":\"" + 0 +"\","
+"\"TLS.account_type\":\"" + 0 +"\","
+"\"TLS.identifier\":\"" + userid +"\","
+"\"TLS.sdk_appid\":\"" + this.mSdkAppid +"\","
+"\"TLS.expire_after\":\"" + expire +"\","
+"\"TLS.sig\":\"" + sig +"\","
+"\"TLS.time\":\"" + time +"\","
+"\"TLS.userbuf\":\"" + userbuf +"\","
+"\"TLS.version\": \"201512300000\""
+"}";
 
//compression
Deflater compresser = new Deflater();
compresser.setInput(jsonString.getBytes(Charset.forName("UTF-8")));
 
compresser.finish();
byte [] compressBytes = new byte [512];
int compressBytesLength = compresser.deflate(compressBytes);
compresser.end();
String privateMapKey = new String(base64UrlEncode(Arrays.copyOfRange(compressBytes, 0, compressBytesLength)));
 
return privateMapKey;
}
 
 
public static void main(String[] args) {
int sdkappid = 1400037025; //腾讯云云通信sdkappid
int roomid = 1234; //音视频房间号roomid
String userid = "webrtc98"; //用户名userid
 
File privateKeyFile = new File("private_key");
byte[] privateKey = new byte[(int)privateKeyFile.length()];
 
File publicKeyFile = new File("public_key");
byte[] publicKey = new byte[(int)publicKeyFile.length()];
 
try {
//读取私钥的内容
//PS:不要把私钥文件暴露到外网直接下载了哦
FileInputStream in1 = new FileInputStream(privateKeyFile);
in1.read(privateKey);
in1.close();
 
//读取公钥的内容
FileInputStream in2 = new FileInputStream(publicKeyFile);
in2.read(publicKey);
in2.close();
 
} catch (Exception e ) {
e.printStackTrace();
}
 
WebRTCSigApi api = new WebRTCSigApi();
api.setSdkAppid(sdkappid);
api.setPrivateKey(new String(privateKey));
api.setPublicKey(new String(publicKey));
 
//生成userSig
String userSig = api.genUserSig(userid, 300);
 
//生成privateMapKey
String privateMapKey = api.genPrivateMapKey(userid, roomid, 300);
 
System.out.println("userSig:\n" + userSig);
System.out.println("privateMapKey:\n" + privateMapKey);
}
 
}


一二三二一的主页 一二三二一 | 菜鸟二级 | 园豆:202
提问于:2018-08-18 18:09

建议给代码加上高亮

dudu 2年前
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yanusosu | 园豆:202 (菜鸟二级) | 2019-01-24 14:25
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