Unknown Digest Type

[Antonio Andrés Espallardo]

Hi. Could anyone help me? I'm obtaining an error when I try to sign an ASN1 message with PKCS7_sign:   /***********************************************************************************/ /*This is the ASN1 message I need to sign*/ ASN1NegotiationRequest *prueba=nr->toASN1Object();    Util *util = new Util();  X509 *certificadoX509 = NULL;   /*This read a client certificate and store it in the variable certificadoX509 */  int salida = util->leerCertificadoX509("d:\\RafaCerJava.der", &certificadoX509);    if (salida != 1 )   printf("Error al leer el certificado %d\n", salida);  else   printf("Certificado leido con exito\n");    //Obtenemos la clave privada   EVP_PKEY *evpPKey = EVP_PKEY_new();   /*This obtain the private key from a der file, and store it in the variable evpPKey*/  salida = util->readPrivateKey("d:\\RafaKeyJava.der",&evpPKey);    if (salida != 1)   printf("Error al obtener la clave privada %d\n", salida);  else   printf("%d\n", *evpPKey);    //Certificados adicionales   STACK_OF(X509) *certs;  certs = sk_X509_new_null ();    //Datos a firmar   BIO *data = ""> int long_ = i2d_ASN1NegotiationRequest(prueba, NULL);    int leidos = BIO_write(data, prueba, long_);    BIO_flush(data);    if (leidos <= 0)   printf("Error al obtener el objeto BIO\n");  else   printf("Leidos : %d bytes %d\n",leidos, long_);    //Entrando a firmar  PKCS7 *signedData = PKCS7_sign(certificadoX509, evpPKey, certs, data, 0); /***********************************************************************************/   Well, I obtain a NULL result from PKCS7_sign, and the reason I get with ERR_error_string is : "error:2106906D:PKCS7 routines:PKCS7_dataInit:unknown digest type". Does anyone knows what is happening please?. Thanks a lot