How to send a digital signature across sockets ?

i have wriiten java code for client server communication - the client sends a digital signature and the server verifies it using the public key .I have sent the signature as a string from the client to server.although the verification comes as true most of the times , some times it comes as "false" .i dont know why it comes that way .
so my question is ::: is there any problem in sending the digital signature as a string. if so , then how can i send it across sockets ?
i have used the necessary specs [ X509EncodedKeySpec , PKCS8EncodedKeySpec ] to write and read the private , public keys.so i dont think its a problem with the keys .
thank you :)
Edited by: itcoll on Dec 1, 2008 2:43 AM
Edited by: itcoll on Dec 1, 2008 2:54 AM

so my question is ::: is there any problem in sending the digital signature as a string.Depends how you constructed the string, how you sent it, and how you received it. Not knowing any of those things it is impossible to comment further.

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