I think that your code should look like the following (not tested) :
struct MyStruct
{
int iMyInt;
float fMyFloat;
char szMyString[5];
long lMyLong
}
int main ()
{
struct MyStruct sStruct;
unsigned char szEncrypted[...];
RSA Rsa;
int iResult;
/* Do some initializations here
...
*/
/* Encryption */
iResult = RSA_public_encrypt (sizeof (struct MyStruct), (unsigned char
*)&sStruct, szEncrypted, &Rsa, RSA_PKCS1_PADDING);
/* Decryption */
iResult = RSA_public_decrypt (sizeof (szEncrypted), szEncrypted, (unsigned
char *)&sStruct, &Rsa, RSA_PKCS1_PADDING);
}
I hope this helps.
Marc.
> -----Message d'origine-----
> De : Jayashree Kanchana [mailto:[EMAIL PROTECTED]
> Envoyé : mardi 3 août 2004 16:43
> À : [EMAIL PROTECTED]
> Objet : Re: RE : RSA encryption - to encrypt a c structure ??
>
>
>
> Hi Marc,
>
> I am sorry, I am not sure how I can type cast the structure
> to string, should I do (char *) ? Once I encrypt I am not
> sure if the encrypted string has the same structure as the
> original "structure".
>
> Can you please show me the synatx to type cast a structure to string.
>
> Thanks,
> Jayashree
>
>
>
> On Tue, 3 Aug 2004, Marc Gaudichet wrote:
>
> > Maybe you could cast the contents of your structure to a string,
> > encrypt this string and then cast the string back to your structure
> > type.
> >
> > Marc.
> >
> > > -----Message d'origine-----
> > > De : Jayashree Kanchana [mailto:[EMAIL PROTECTED]
> Envoyé : mardi
> > > 3 août 2004 16:00 À : [EMAIL PROTECTED]
> > > Objet : RSA encryption - to encrypt a c structure ??
> > >
> > >
> > > Hi,
> > >
> > > I am hoping that someone might have come across this problem and
> > > will be able to help me.
> > >
> > > I am trying to use openssl to encrypt a "c structure" instead of
> > > just a "string", is there any function in openssl that I
> could use?
> > >
> > > I have a RSA key structure that is already created and I
> am able to
> > > encrypt and decrypt just a "string" using
> RSA_public_encrypt command
> > > and this RSA key pair .
> > >
> > > Thanks in advance,
> > > Jayashree
> > >
> > >
> ______________________________________________________________________
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> http://www.openssl.org
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> >
> ______________________________________________________________________
> > OpenSSL Project
> http://www.openssl.org
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> >
>
> ______________________________________________________________________
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