如何在iOS的咸SHA512使用WSSE超过1次迭代 [英] How to use WSSE in iOS with salted sha512 with more than 1 iteration

问题描述

我需要一些帮助，在iOS的WSSE头几代人。它使用它写在Symfony2中的应用的 SHA512 算法 5000次迭代和连接code_as_bas​​e64 为真。对于移动应用程序，我发现这个问题编码的密码： SHA512盐适用于iOS 虽然这只是一次迭代。用一个简单的循环，其中包括最后一个就足够了吗？

I need some help with WSSE Header generations in iOS. The application it's written in Symfony2 which uses sha512 algorithm with 5000 iterations and encode_as_base64 as true. For the mobile app, I found this question for encoding the password: SHA512 with salt for iOS although it's only one iteration. Using a simple loop which includes the last one would suffice it?

我们发现了Android一代WSSE头的code：的 http://obtao.com/blog/2013/09/how-to-use-wsse-in-android-app/ 这是可以做到同样的事情在iOS或我们应该找到认证另一种方式，像的OAuth2？

We found the code for the Android generation of the WSSE Headers: http://obtao.com/blog/2013/09/how-to-use-wsse-in-android-app/ It is possible to do the same thing in iOS or should we find another way for authentication, like OAuth2?

推荐答案

如果您想重现相同的加密作为Symfony2中的5000次迭代，你可以使用下面的code：

If you want to reproduce the same encryption as Symfony2 with the 5000 iterations, you can use the following code:

- (NSString *)hashPassword:(NSString *)password ansSalt:(NSString *)salt {

    NSString *passwordSalted = [NSString stringWithFormat:@"%@{%@}",password,salt];

    NSData *passwordData = [passwordSalted dataUsingEncoding:NSUTF8StringEncoding];

    uint8_t hash[CC_SHA512_DIGEST_LENGTH];
    CC_SHA512([passwordData bytes], [passwordData length], hash);

    NSMutableData *allData = [[NSMutableData alloc] init];
    [allData appendBytes:hash length:CC_SHA512_DIGEST_LENGTH];

    for (NSInteger i = 1; i < 5000; i++) {

        [allData appendBytes:[passwordData bytes] length:[passwordData length]];
        uint8_t hashLoop[CC_SHA512_DIGEST_LENGTH];
        CC_SHA512([allData bytes], [allData length], hashLoop);
        [allData setLength:0];
        [allData appendBytes:hashLoop length:CC_SHA512_DIGEST_LENGTH];

    }

    NSData *imageData = [NSData dataWithBytes:[allData bytes] length:[allData length]];

    return [imageData base64EncodedStringWithOptions:0];

}

不要忘了导入CommonDigest.h：

Don't forgot to import CommonDigest.h:

#import <CommonCrypto/CommonDigest.h>

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