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" <radu...@mac.com> 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 > ________________________________________________________________________ TO UNSUBSCRIBE: Go to http://www.witango.com/developer/maillist.taf
