See here for a brief example, you can sign a file in two ways really, all
in one file and as separate files. Feel free to play around though, there
are a few silly examples in this file which will get you started. So not
use it without ensuring its what you want and you understand every line
etc. as a start it will be fine.
https://github.com/maidsafe/MaidSafe-Common/blob/master/src/maidsafe/common/tools/signing_tool.cc#L168




On Mon, May 12, 2014 at 3:05 PM, Damias <[email protected]> wrote:

> Hi all, I'm working on a little project and it would be nice to have some
> help because it's my first time using crypto++.
>
> One of the parts of this project is to sign a file or a string (using
> RSASSA-PKCS1-v1.5), first let's asume it's a string. So I found this 
> page<http://www.cryptopp.com/wiki/RSA_Signature_Schemes>and downloaded the 
> code at the bottom. I need to separate this code in two:
> one code to sign the string and save the signature to a file and a second
> code to read this signature from the file and verify it. I've tried to
> write the SecByteBlock contaning the signature with ofstream but without
> success...
>
> Can someone help me to save the signature to a file and later read it on
> the other code?
>
> Thank you for all your assistance.
>
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-- 

David Irvine
twitter: @metaquestions
blog:  http://metaquestions.me

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