Hi,
I have never used USB token for signing, but other stuff like virtual
keystores and smartcards. I got already a working Keystore
implementation to access the private key from the device.
So for signing you will need to have a java.security.KeyStore that
wraps the token and provide the certificate, private key and aliases
from it. Also you will need to implement a java.security.Provider that
can handle your keystore and the private key.
After all, you need to tell BouncyCastle that he might use your
provider for signing operations on the key.
Look at the code here
https://github.com/Rayman2200/pdfbox-crypto/blob/1.8/src/main/java/org/apache/pdfbox/crypto/bc/BC14x_SignatureInterface.java
In the line 78 you need to use your provider name as "keyCryptoProvider"
Don't forget to register your provider with Security.addProvider()
first or pass a Provider instance there.
If you does not meet this requirements with a already existing
keystore implementation, you would need to google how you write your
own provider [1]. This would be the harder part which is also out of
scope in this mailing list.
[1]
http://docs.oracle.com/javase/7/docs/technotes/guides/security/crypto/HowToImplAProvider.html
Best regards
Thomas
Zitat von GH Subhash <[email protected]>:
Hi!
Can anybody help me out by providing sample code for digitally
signing PDF file using USB token.
Thank You and regards
जी. एच. सुभाष / G. H. Subhash
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