Doesn't work in new regions that require AWS4-HMAC-SHA256 about amazons3requestmanager HOT 12 OPEN

@tbleckert We have to implement V4 signatures. For this to work the Authentication header must be adjusted. If you want to give it a shot AmazonS3SignatureHelpers.m would be the starting point. I think it's not too hard to do. Have a look at the implementation of the official iOS SDK: https://github.com/aws/aws-sdk-ios/blob/master/AWSCore/Authentication/AWSSignature.m

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Thanks for making me aware of this. I'll try looking into this sometime soon, but I'm probably not going to have time this week. If anyone wants to take a crack at it, I'd be happy to take a PR.

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I've started work on this, but it's quite a big project. This could take a while.

You can check out the AWS_signature_V4 branch if you want to contribute.

AWS documentation for the signature calculations are here:
http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html

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@AnthonyMDev Cool, thx. I'll have a look at it.

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@tbleckert Just an update for you. I have been working on this. I'm almost done getting the V4 Signature set up. I'll integrate it as soon as I have some more free time and we will be good to go!

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@AnthonyMDev Cool stuff! Thx mate.

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@AnthonyMDev Great work! Thanks!

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@tbleckert Okay, I've got a working beta of the V4 signature up and running. Can you try using the /feature/AWS_signature_v4 branch and see if that works for you please?

I'm fairly certain that this should work for GET requests just fine now. There is some wording in the AWS documentation that makes me think that we may have to sign the requests a completely different way for POST requests.

Can you please confirm that BOTH GET and POST requests work for you? If so, I'll release a new version with this included. Otherwise, I'll need some time to get the POST encoding done.

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Really stoked about this. I've been getting those 9999 codes as well.

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@WadeSellers Glad to hear that other people want this as well. I haven't had time to do ample testing of this to feel comfortable pushing it to master yet. As I said above, I'm not sure if POST requests are going to work yet specifically. If you are looking for this to be pushed to a new version and have some time, I'd really appreciate getting some outside sources to test and confirm that everything is working.

Thanks

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looks like the v4 signing dosent work for me when i try to upload an object..
any way to find out why?

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The POST requests may take a separate signature type. I'm not sure when I'll have time to look into this, but it's on my list. If someone else wants to make a PR before me, feel free.

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