Hi,
In public key cryptography, a message encrypted with a private key can
be decrypted with a public key, and so I tried:
openssl rsautl -encrypt -inkey private-key -in message -out cryptogram
openssl rsautl -decrypt -inkey public-key -pubin -in cryptogram
The problem is that the second
On Wed, Dec 28, 2011, Ireneusz Szcze??niak wrote:
Hi,
In public key cryptography, a message encrypted with a private key
can be decrypted with a public key, and so I tried:
openssl rsautl -encrypt -inkey private-key -in message -out cryptogram
openssl rsautl -decrypt -inkey public-key
-decrypt -inkey public-key -pubin -in cryptogram
The problem is that the second command gives me:
A private key is needed for this operation
Why can't one decrypt with a public key?
I do realize that I can convince the recipient of the message that
the message is indeed mine by signing
I tried to do this with the openssl command.
The public key decrypt and private encrypt operations correspond to the
-verify and -sign options to rsautl which is why I suggested them.
The default padding is however different in accordance with the PKCS#1
standard. That can be changed
Szcześniak irek.szczesn...@gmail.com
To: openssl-users@openssl.org,
Date: 12/28/2011 01:45 PM
Subject: Re: decrypt with a public key
Sent by: owner-openssl-us...@openssl.org
Thank you, Steve, for your post. Let me explain what I'm trying to
do. In the public key cryptography:
message
On 28.12.2011 19:50, Dr. Stephen Henson wrote:
The public key decrypt and private encrypt operations correspond to the
-verify and -sign options to rsautl which is why I suggested them.
Now I understand. I mistakenly thought that -sign and -verify were
used to attach and examine
