Combine whatever key value you want with the phone number or whatever, putting them into one contiguous byte array. Feed that into a cryptographic hash to obtain the fixed-length encryption/decryption key.
http://en.wikipedia.org/wiki/Cryptographic_hash_function On Dec 8, 2:08 pm, Tobiah <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> 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 -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
