Just curious:
Putting speed aside, what is the security risk by encrypting
a large file chunk by chunk using RSA public key? (e.g.
using chain mode like what is done in symmetric block cipher)
On 12/14/05, Amir (sent by Nabble.com) [EMAIL PROTECTED] wrote:
Thank you for your reply,
I do
On Tue, Dec 20, 2005 at 10:48:57AM -0500, [EMAIL PROTECTED] wrote:
Just curious:
Putting speed aside, what is the security risk by encrypting
a large file chunk by chunk using RSA public key? (e.g.
using chain mode like what is done in symmetric block cipher)
RSA is not intended for
Thank you for your reply,
I do not undrestand the last paragraph very well. I know how to encrypte a file using a symmetric algorithm. But i dont know what do you mean by then encrypting with the RSA key
Encrypting by by a symmetric al will give me a file with the same size.
I all want to do
I could be wrong, but I believe what is being said is this:
- It is difficult to encrypt a large file with an asymmetric algorithm
like RSA
- It is easy to encrypt a large file with a symmetric algorithm like AES,
but both sides must have the same key, and that key exchange is difficult
- The
On 12/14/05, Amir (sent by Nabble.com) [EMAIL PROTECTED] wrote:
Thank you for your reply,
I do not undrestand the last paragraph very well. I know how to
encrypte a file using a symmetric algorithm. But i dont know what do
you mean by then encrypting with the RSA key
Encrypting by by a
With RSA, the data to be encrypted is first mapped on to
an integer. For RSA to work, this integer must be smaller than the RSA
modulus used. In order to get things to work the way you want, if you
are using a (say) 1,024-bit RSA modulus, you must split your input data
in chunks 1,024 bits long,
Hi all,
How can I encrypt a large file (like 100mb) with a public key so that no one other than who has the private key be able to decrypt it?
I can make RSA public and private keys but when it comes to encrypting a large file using this command:
openssl rsautl -encrypt -pubin -inkey
How can I encrypt a large file (like 100mb) with a public key so
that no one other than who has the private key be able to decrypt it?
Encrypt it using a strong symmetric key (such as AES) and use RSA to
encrypt *that* key.
This is the way everyone does it.
/r$
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