修改sign。

键盘里ai回复的bug

Shared/KBSignUtils.m

@@ -10,6 +10,32 @@
 
 @implementation KBSignUtils
 
+static NSString *const KBSignAppId = @"loveKeyboard";
+static NSString *const KBSignSecret = @"kZJM39HYvhxwbJkG1fmquQRVkQiLAh2H";
+
+static NSString *KBSignStringFromObject(id obj) {
+    if (!obj || obj == (id)kCFNull) {
+        return nil;
+    }
+    if ([obj isKindOfClass:[NSString class]]) {
+        return (NSString *)obj;
+    }
+    if ([obj isKindOfClass:[NSNumber class]]) {
+        return [(NSNumber *)obj stringValue];
+    }
+    if ([obj isKindOfClass:[NSArray class]] || [obj isKindOfClass:[NSDictionary class]]) {
+        NSJSONWritingOptions options = 0;
+        if (@available(iOS 11.0, *)) {
+            options = NSJSONWritingSortedKeys;
+        }
+        NSData *data = [NSJSONSerialization dataWithJSONObject:obj options:options error:nil];
+        if (data.length > 0) {
+            return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+        }
+    }
+    return [obj description];
+}
+
 + (NSString *)urlEncode:(NSString *)value {
     if (!value) return @"";
     // 按 application/x-www-form-urlencoded 规则编码（更贴近后端常见实现）
@@ -96,4 +122,50 @@
     return [uuid substringToIndex:length];
 }
 
++ (NSDictionary<NSString *, NSString *> *)signHeadersWithBodyParams:(NSDictionary *)bodyParams {
+    NSString *timestamp = [self currentTimestamp];
+    NSString *nonce = [self generateNonceWithLength:16];
+
+    NSMutableDictionary<NSString *, NSString *> *signParams = [NSMutableDictionary dictionary];
+    if (KBSignAppId.length > 0) {
+        signParams[@"appId"] = KBSignAppId;
+    }
+    if (timestamp.length > 0) {
+        signParams[@"timestamp"] = timestamp;
+    }
+    if (nonce.length > 0) {
+        signParams[@"nonce"] = nonce;
+    }
+
+    if ([bodyParams isKindOfClass:[NSDictionary class]] && bodyParams.count > 0) {
+        [bodyParams enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+            if (![key isKindOfClass:[NSString class]]) {
+                return;
+            }
+            NSString *value = KBSignStringFromObject(obj);
+            if (value.length == 0) {
+                return;
+            }
+            signParams[(NSString *)key] = value;
+        }];
+    }
+
+    NSString *sign = [self signWithParams:signParams secret:KBSignSecret ?: @""];
+
+    NSMutableDictionary<NSString *, NSString *> *headers = [NSMutableDictionary dictionary];
+    if (sign.length > 0) {
+        headers[@"X-Sign"] = sign;
+    }
+    if (KBSignAppId.length > 0) {
+        headers[@"X-App-Id"] = KBSignAppId;
+    }
+    if (timestamp.length > 0) {
+        headers[@"X-Timestamp"] = timestamp;
+    }
+    if (nonce.length > 0) {
+        headers[@"X-Nonce"] = nonce;
+    }
+    return [headers copy];
+}
+
 @end