On 11/1/2013 8:51 AM, Bapuji Nakka wrote:
> Can I do the certificate encryption of a document after signing it?
Of course not, that would break the signature.
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Android is increasing in popularity, but the open developme
Hi,
Can I do the certificate encryption of a document after signing it?
below, I tried to do both but signature has been applied but it opening
the document anywhere whithout certificate installation.
*
Signature code:-
*ExternalSignature es = new PrivateKeySignature(pk, "SHA-256", "BC");
Op 21/10/2013 13:50, Bapuji Nakka schreef:
> How the user decrypt with his private key? without having any utility
> to do this job?
His private key will have to be known by his PDF Viewer. For instance:
on Windows, one can register his private key on the OS level and Adobe
Reader can use that
Hi,
I will encrypt with user's public key. I share the document to the user.
How the user decrypt with his private key? without having any utility to
do this job?
presently what iam doing is
*Encryption*
stamper.setEncryption(USER_PASSWORD.getBytes(), OWNER_PASSWORD.getBytes(),
~(PdfWriter.A
Op 21/10/2013 13:09, Bapuji Nakka schreef:
> Hi,
>
> How world can see the document. what was the problem in the code?
> Please correct me if I am understanding it wrongly.
Please show me in which line you ENCRYPT the document. Maybe I'm
overlooking it.
I see that you SIGN the document, this
Hi,
How world can see the document. what was the problem in the code?
Please correct me if I am understanding it wrongly.
If i encrypt the document with certificate(private key) then how user
decrypt it?
If i share public key, how user will decrypt it? Do i need to provide the
utility/web
Is it possible you're confusing encryption with signing?
Your initial question was about encryption, which means you want to
secure a document so that it's protected against people who may not know
the content of the document.
Your code shows that you're signing a document, which means that you
Hi,
Thanks for your help. Iam using
Security.addProvider(new BouncyCastleProvider());
KeyStore ks = KeyStore.getInstance("pkcs12", "BC");
ks.load(new FileInputStream(cert), certpass);
String alias = (String)ks.aliases().nextElement();
PrivateKey pk = (Pr
On 10/21/2013 8:03 AM, Bapuji Nakka wrote:
> I am using AES 256 bit encryption. Is this secure from bruit force attack?
>Because i read in articles, above encryption can be cracked easlily
> in the adobe 9.
This question is wrong.
It should read: "Is password encryption secure?" The answer is
Hi,
I am using AES 256 bit encryption. Is this secure from bruit force
attack?
Because i read in articles, above encryption can be cracked easlily in
the adobe 9.
http://blogs.adobe.com/security/2008/12/acrobat_9_and_password_encrypt.html
--
Regards,
Bapuji.Nakka | Scientific Officer
NIC
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