问题描述
安卓加密出来的是[B@42a6f4d8 我们iOS加密出来的是6132896cb90f07ff8f5313990324016816d54f6b还有baseStr = [[NSString alloc] initWithData:[QNUrlSafeBase64 decodeString:HIMAStr] encoding:NSUTF8StringEncoding]; [QNUrlSafeBase64 decodeString:HIMAStr]是有值的 但是返回出来却是nil这是为什么呀？这是我的代码 请大神们指点下！感激不尽！！！
问题解答
回答1：运气好，正好最近也用到七牛：
- (NSString *)genToken{ static NSUInteger expireTime = 0; static NSString *cachedSign = nil; NSUInteger now = (NSUInteger)[NSDate date].timeIntervalSince1970; if (now > expireTime) {expireTime = now + 3600 - 60;NSDictionary *policy = @{ @'scope': _bucket, @'deadline': @(expireTime + 60), @'returnBody': @'{'key':$(key),'name':$(fname),'size':$(fsize),'w':$(imageInfo.width),'h':$(imageInfo.height),'hash':$(etag)}' };NSString *encodedPolicy = [[NSJSONSerialization dataWithJSONObject:policy options:0 error:NULL] base64EncodedStringWithOptions:0];encodedPolicy = [encodedPolicy stringByReplacingOccurrencesOfString:@'+' withString:@'-'];encodedPolicy = [encodedPolicy stringByReplacingOccurrencesOfString:@'/' withString:@'_'];const char *text = [encodedPolicy cStringUsingEncoding:NSASCIIStringEncoding];const char *key = [_secretKey cStringUsingEncoding:NSASCIIStringEncoding];char cHMAC[CC_SHA1_DIGEST_LENGTH];CCHmac(kCCHmacAlgSHA1, key, strlen(key), text, strlen(text), cHMAC);NSString *sign = [[NSString alloc] initWithData:[NSData dataWithBytes:cHMAC length:sizeof(cHMAC)] encoding:NSASCIIStringEncoding];NSString *encodedSign = sign.toBase64String;encodedSign = [encodedSign stringByReplacingOccurrencesOfString:@'+' withString:@'-'];encodedSign = [encodedSign stringByReplacingOccurrencesOfString:@'/' withString:@'_'];cachedSign = [NSString stringWithFormat:@'%@:%@:%@', _accessKey, encodedSign, encodedPolicy]; } return cachedSign;}
