I don't understand most of these terms.

On 12/08/2010 12:22 PM, Wajid Hussain wrote:
Use symmetric key encryption and make your key extended by adding phone number 
of the mobile with the key like new_key = your_key +
customer_mobile_number

But you can't do this with asymmetric key(key pair).
But you can also implement this using a double encryption technique. Means 
encrypt using public key and then encrypt it with
your_key, and same as with decryption, means first decrypt with your_key and 
then decrypt with private key. But keep in mind that
hash and message digest can only performs before and after you your_key encrypt 
and decrypt.

Hope this will solve your problem.

Wajid


On Thu, Dec 9, 2010 at 1:08 AM, Tobiah <t...@tobiah.org 
<mailto:t...@tobiah.org>> wrote:

    Good news.  More info please?


    On 12/08/2010 12:05 PM, DanH wrote:

        Yep.

        On Dec 8, 12:19 pm, Tobiah<t...@tobiah.org <mailto:t...@tobiah.org>>  
wrote:

            Is it possible to encrypt data in such a way, that given a 
particular
            phone number, I could distribute a key that would decrypt the data,
            but only when mixed with that phone number?

            Thanks,

            Tobiah



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