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AES encrypt options #20

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hustwcw opened this issue May 27, 2013 · 2 comments
Open

AES encrypt options #20

hustwcw opened this issue May 27, 2013 · 2 comments

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@hustwcw
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hustwcw commented May 27, 2013

In the AES256EncryptedDataUsingKey method, I can't decryt the data using java when the options is set to kCCOptionPKCS7Padding. But when I modify the options to "kCCOptionPKCS7Padding | kCCOptionECBMode", I can decrypt correctly.
I haven't used the decryptedAES256DataUsingKey method in the iOS client, but I think the options in this method should alos be modified to "kCCOptionPKCS7Padding | kCCOptionECBMode".
@mschleeweiss
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ECB is pretty unsecure.

@AlanQuatermain
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Even CBC is heading that way. The recommendation is going towards Galois/Counter Mode instead, although there aren't yet many implementations of that. Hopefully Apple will add it to CommonCrypto in the next revision.

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@AlanQuatermain @hustwcw @mschleeweiss