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A mirror of the official Linux kernel repository just in case
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The ARM bit sliced AES core code uses the IV buffer to pass the final keystream block back to the glue code if the input is not a multiple of the block size, so that the asm code does not have to deal with anything except 16 byte blocks. This is done under the assumption that the outgoing IV is meaningless anyway in this case, given that chaining is no longer possible under these circumstances. However, as it turns out, the CCM driver does expect the IV to retain a value that is equal to the original IV except for the counter value, and even interprets byte zero as a length indicator, which may result in memory corruption if the IV is overwritten with something else. So use a separate buffer to return the final keystream block. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.