Hello.  I am working on a project that uses the
openssl implementations of 3DES-CBC
encryption/decryption.  

Is it valid for the input and output buffers to
overlap in calls to EVP_CipherUpdate() and
EVP_CipherFinal()?  Similarly, can these operations be
done in place (i.e. use the same buffer for input and
output)?

Thanks,
Craig

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