<@cipher> doesn't work for you? On 11/24/09 11:48 AM, "Roland Dumas" <[email protected]> wrote in whole or in part:
> thank you. I'm ignorant about these things and need more explicit steps: > > how does one "hash" a string? There's no <@hash> tag in witango > > What if you really want the unhashed string back out? Say, a credit card > number? > > > > > On Nov 24, 2009, at 8:17 AM, Beverly Voth wrote: > >> On 11/24/09 11:08 AM, "Roland Dumas" <[email protected]> wrote in whole or in >> part: >> >>> >>> How does one insert a field into a database - mysql - so that it ends up >>> encrypted? >>> Needless to say, the field must be unencryptable in order to compare it to >>> submissions, as in a password, or unencryptable for export, as in a cc >>> number. >>> >>> How does this work? >> >> Typically, the data is hashed before INSERT. Then the data to "compare" is >> also hashed and the two are compared. You don't need to "un-hash" the stored >> information before comparison. >> >> <http://en.wikipedia.org/wiki/Cryptographic_hash_function> >> >> Beverly Voth ________________________________________________________________________ TO UNSUBSCRIBE: Go to http://www.witango.com/developer/maillist.taf
