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Question on MD5 hash and Digital Signatures

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markwilest

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Hi,

Please help me with this question. After the message digest is formed by concatenating A, B, C and D, how would I go about digitally signing the last bye of both B and D. I'm not sure how to get M from the hexadecimal format of B and D, where M is from the equation C=M^e mod(n).

Any help will be greatly appreciated.

Regards,

Mark
 

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