mysql - Full table search and data encryption -

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i had developing client software in vb6 , mysql. table

create table if not exists `main_table` (     `f_id` int(11) not null default '0',     `id` mediumint(15) not null auto_increment,     `text_to_encrypt` mediumtext     primary key (`id`),     key `f_id` (`f_id`) );

the client wants data encrypt column of text_to_encrypt. easy encrypt data real problem text searchable keywords provided user , show data after decrypting encrypted data. column has 900,000 , going increase, want solution windows os. do?

if client 1 determines how should behave, client has know cannot search encrypted data keywords without decrypting it.

that means taking entire contents of table, decrypting , searching.


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