> I have a text file, let us call it test.tx, which I need to send it > through a secure mechanism to a remote site. > I have already created a pair of public and private rsa key using > openssl. > I want to use openssl to generate a sha256 hash digest of the text file, > i.e. test.tx --> test.hash. > And encrypt the hash file with my private key i.e. test.hash --> > test.sign. > I believe this process is called signing the image (I am very new in > this area). > > Any help greatly appreciated, > > --B
You are asking a really confusing question. You're like the guy who needs a ride to the airport who asks if there's some kind of motorized conveyance, open to the public, that operates a scheduled route towards a local air transport facility. Just say "is there a bus to airport" or google "airport bus". If you just want to sign a file, use one of the tools designed to do exactly that. http://www.gnupg.org/ If you have any specific requirements, tell us what they are. I still have no idea what you think an "image" is or why you think you want to "encrypt" something to sign it. Perhaps you are hung up on an unusual detail of RSA that signing and ecrypting are mathematically the same operation? Crediting and debiting an account are mathematically the same operation, but if you said you wanted to "credit your account" for the amount of a check you wrote, you would just be confusing everyone. Or do you mean "executable" by image? Signing executables varies by operating system. For Windows, there's a signing tool specifically for images. I hope this doesn't come across as angry or snarky. I know mood is a hard thing to convey in an email. DS ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
