There are a lot of ugly things in your code, but that strlen(firma) has no
sense. I think you are confusing the size of the private key RSA struct with
the size of the buffer you want to sign. Also, you are using strlen with a
buffer (firma) with any content and probaly not ended with 0, so it will
crash your application.
I suggest you to look at the OpenSSL apps directory to see some
examples.(the "rsa" example will help you).
----- Original Message -----
From: "Angel Martinez Gonzalez" <[EMAIL PROTECTED]>
To: <openssl-users@openssl.org>
Sent: Wednesday, April 13, 2005 1:54 PM
Subject: Error to sign with OpenSSL
> Hello:
>
> I want sign with OpenSSL, and I use the RSA_sign fuction:
>
>
> void Firmar(char *mdigest, int longmdigest, RSA *claveRSA)
> {
> int error;
> char *firma;
>
> firma = malloc(RSA_size(claveRSA));
>
> error = RSA_sign(NID_sha1, mdigest, longmdigest, firma, strlen(firma),
> claveRSA);
>
> if (error == 1)
> printf ("Firma realizada con exito\n");
> else
> printf ("Error en el firmado\n");
>
> }
>
> And I call to this funcion "Firmar" with this code:
>
> Firmar(messagedigest, longitudMensajeDigest, parClaves);
>
> Where:
> unsigned char messagedigest[EVP_MAX_MD_SIZE];
> int longitudMensajeDigest;
> RSA *parClaves;
>
> and this variables have a valid value.
>
> But I have an error in execution time. What is wrong?.
>
> Thanks.
>
>
> ______________________________________________________________________
> OpenSSL Project http://www.openssl.org
> User Support Mailing List openssl-users@openssl.org
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