iOS 生成七牛token方法

最新推荐文章于 2022-07-12 14:59:11 发布

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最新推荐文章于 2022-07-12 14:59:11 发布

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分类专栏： iOS 文章标签：七牛token iOS

本文链接：https://blog.youkuaiyun.com/u011173536/article/details/81003733

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本文介绍了一种使用Objective-C实现的七牛云存储Token生成方法。通过一系列步骤包括生成签名、构造请求参数等，详细展示了如何利用七牛提供的API和服务来安全地生成访问其云存储系统的认证令牌。

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pragma mark - 获取token方法

导入

#import "QiniuSDK.h"
#import <CommonCrypto/CommonDigest.h>
#include <CommonCrypto/CommonHMAC.h>
#import "QNUrlSafeBase64.h"
#import "QN_GTM_Base64.h"

生成方法

+ (NSString *)token{
    // 在控制台可以看到自己的accessKey 和 secretKey
    return [PXRQiNiuUtility makeToken:@"accessKey" secretKey:secretKey];
}


+ (NSString*)dictionryToJSONString:(NSMutableDictionary *)dictionary
{
    NSError *parseError = nil;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionary options:NSJSONWritingPrettyPrinted error:&parseError];

    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}


+ (NSString *) hmacSha1Key:(NSString*)key textData:(NSString*)text
{
    const char *cData  = [text cStringUsingEncoding:NSUTF8StringEncoding];
    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];
    uint8_t cHMAC[CC_SHA1_DIGEST_LENGTH];
    CCHmac(kCCHmacAlgSHA1, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
    NSData *HMAC = [[NSData alloc] initWithBytes:cHMAC length:CC_SHA1_DIGEST_LENGTH];
    NSString *hash = [QNUrlSafeBase64 encodeData:HMAC];
    return hash;
}

+ (NSString *)makeToken:(NSString *)accessKey secretKey:(NSString *)secretKey
{
    //名字
    NSString *baseName = [self marshal];
    baseName = [baseName stringByReplacingOccurrencesOfString:@" " withString:@""];
    baseName = [baseName stringByReplacingOccurrencesOfString:@"\n" withString:@""];

    NSData   *baseNameData = [baseName dataUsingEncoding:NSUTF8StringEncoding];
    NSString *baseNameBase64 = [QNUrlSafeBase64 encodeData:baseNameData];
    NSString *secretKeyBase64 =  [PXRQiNiuUtility hmacSha1Key:secretKey textData:baseNameBase64];
    NSString *token = [NSString stringWithFormat:@"%@:%@:%@",  accessKey, secretKeyBase64, baseNameBase64];

    return token;
}

+ (NSString *)marshal
{
    time_t deadline;
    time(&deadline);
    //"ceshi" 是我们七牛账号下创建的储存空间名字“可以自定义”
    NSMutableDictionary *dic = [NSMutableDictionary dictionary];
    [dic setObject:@"ios-upload-file" forKey:@"scope"];
    //3464706673 是token有效期
    NSNumber *escapeNumber = [NSNumber numberWithLongLong:3464706673];
    [dic setObject:escapeNumber forKey:@"deadline"];
    NSString *json = [PXRQiNiuUtility dictionryToJSONString:dic];
    return json;
}