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Example/SellyCloudSDK/VideoCall/TokenGenerator.m

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+//
+//  TokenGenerator.m
+//  SellyCloudSDK_Example
+//
+//  Created by Caleb on 20/11/25.
+//  Copyright © 2025 Caleb. All rights reserved.
+//
+
+#import "TokenGenerator.h"
+
+#define KSecret @"CHANGE_ME"
+#define CALL_APP_ID @"demo-app"
+
+@implementation TokenGenerator
+
++ (NSString *)generateRTCCallTokenWithUserId:(NSString *)userId
+                              callId:(NSString *)callId
+{
+    // 当前时间戳（秒）
+    long signTime = (long)[[NSDate date] timeIntervalSince1970];
+    long exprTime = signTime + 60;   // 10 分钟后过期
+
+    // payload 拼接
+    NSString *payload = [NSString stringWithFormat:@"%@%@%@%ld%ld",
+                         CALL_APP_ID, userId, callId, signTime, exprTime];
+
+    // HMAC-SHA256 计算
+    const char *cKey  = [KSecret cStringUsingEncoding:NSUTF8StringEncoding];
+    const char *cData = [payload cStringUsingEncoding:NSUTF8StringEncoding];
+
+    unsigned char cHMAC[CC_SHA256_DIGEST_LENGTH];
+    CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
+
+    // 转 hex 字符串
+    NSMutableString *sign = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH * 2];
+    for (int i = 0; i < CC_SHA256_DIGEST_LENGTH; i++) {
+        [sign appendFormat:@"%02x", cHMAC[i]];
+    }
+
+    // 拼接最终 Token
+    NSString *token = [NSString stringWithFormat:
+                       @"appid=%@&userid=%@&callid=%@&signtime=%ld&exprtime=%ld&sign=%@",
+                       CALL_APP_ID, userId, callId, signTime, exprTime, sign];
+
+    return token;
+}
+
++ (NSString *)generateStreamSignatureWithVhost:(NSString *)vhost
+                                         appId:(NSString *)appId
+                                     channelId:(NSString *)channelId
+                                          type:(NSString *)type
+                                           key:(NSString *)key
+{
+    // 当前时间戳（秒）
+    long signTm = (long)[[NSDate date] timeIntervalSince1970];
+    long expireTm = signTm + 600;  // 10 分钟后过期
+    
+    // 拼接签名字符串: vhost|app_id|channel_id|sign_tm|expire_tm|type
+    NSString *payload = [NSString stringWithFormat:@"%@|%@|%@|%ld|%ld|%@",
+                         vhost, appId, channelId, signTm, expireTm, type];
+    
+    // 使用 key 生成签名
+    NSString *sign = [self generateSign:payload withKey:key];
+    
+    // 拼接完整 payload: vhost|app_id|channel_id|sign_tm|expire_tm|type|sign
+    NSString *fullPayload = [NSString stringWithFormat:@"%@|%@", payload, sign];
+    NSLog(@"###fullPayload == %@",fullPayload);
+    
+    // Base64 编码
+    NSData *data = [fullPayload dataUsingEncoding:NSUTF8StringEncoding];
+    NSString *base64String = [data base64EncodedStringWithOptions:0];
+    
+    return base64String;
+}
+
++ (NSString *)generateSign:(NSString *)payload withKey:(NSString *)key {
+    // HMAC-SHA256 计算
+    const char *cKey  = [key cStringUsingEncoding:NSUTF8StringEncoding];
+    const char *cData = [payload cStringUsingEncoding:NSUTF8StringEncoding];
+    
+    unsigned char cHMAC[CC_SHA256_DIGEST_LENGTH];
+    CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
+    
+    // 转 hex 字符串
+    NSMutableString *sign = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH * 2];
+    for (int i = 0; i < CC_SHA256_DIGEST_LENGTH; i++) {
+        [sign appendFormat:@"%02x", cHMAC[i]];
+    }
+    
+    return sign;
+}
+
+@end