#include <openssl/rsa.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
+#include "rsa_locl.h"
/* Size of an SSL signature: MD5+SHA1 */
#define SSL_SIG_LENGTH 36
return(ret);
}
-int int_rsa_verify(int dtype, const unsigned char *m, unsigned int m_len,
- unsigned char *rm, unsigned int *prm_len,
- const unsigned char *sigbuf, unsigned int siglen,
- RSA *rsa)
+int int_rsa_verify(int dtype, const unsigned char *m,
+ unsigned int m_len,
+ unsigned char *rm, unsigned int *prm_len,
+ const unsigned char *sigbuf, unsigned int siglen,
+ RSA *rsa)
{
int i,ret=0,sigtype;
unsigned char *s;
sig=d2i_X509_SIG(NULL,&p,(long)i);
if (sig == NULL) goto err;
+
+ /* Excess data can be used to create forgeries */
+ if(p != s+i)
+ {
+ RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+
+ /* Parameters to the signature algorithm can also be used to
+ create forgeries */
+ if(sig->algor->parameter
+ && ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL)
+ {
+ RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+
sigtype=OBJ_obj2nid(sig->algor->algorithm);