Re: sign-file and detached PKCS#7 firmware signatures

[David Howells]

Luis R. Rodriguez <mcgrof@xxxxxxxx> wrote:

> > Something like:
> > 
> > 	openssl smime -verify \
> > 		-in $PKCS7_MESSAGE_FILE_IN_DER_FORM \
> > 		-inform DER \
> > 		-content $FIRMWARE_BLOB_NAME \
> > 		-inkey $PRIVATE_KEY_FILE_IN_PEM_FORM \
> > 		-signer $X509_CERT_FILE_IN_PEM_FORM
> > 
> > I would guess.
> 
> I tried a few things and no luck with that.

Try this:

	openssl smime -verify \
		-in $PKCS7_MESSAGE_FILE_IN_DER_FORM \
		-inform DER \
		-certfile $X509_CERT_FILE_IN_PEM_FORM \
 		-content $FIRMWARE_BLOB_NAME \
		-binary \
		-noverify \
		>/dev/null

Seems using -signer with -verify isn't a good idea as -signer refers to an
output file during verification just for the surprise factor.

David
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/