Hi,
I am working on a project that uses CryptoPP, and we wish to use the OAEP
class to provide protection against chosen cleartext attacks in our
protocol. I would greatly appreciate your insight on a detail of OAEP_Base.
Question: The OAEP_Base method signatures do not appear as one would expect
for an OAEP padding scheme. These signatures suggest the encoding is
bytewise. But looking at the implementation, it appears the encoding is
bitwise. Can you please describe what the lengths passed into the message
are (are they bits, bytes, etc)? Also, can you provide two lines of code
which call these two functions?
void Pad(RandomNumberGenerator &rng, const byte *raw, size_t
inputLength, byte *padded, size_t paddedLength, const NameValuePairs
¶meters) const;
DecodingResult Unpad(const byte *padded, size_t paddedLength, byte
*raw, const NameValuePairs ¶meters) const;
Thank you in advance!!
-sherman
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