Here I am.
The company I work for is currently spinning down into a ‘Hibernate’ mode (after I have helped it move from Sybase Databases to MySQL databases hosted in the ‘cloud’). I’ve more or less worked myself out of a Sybase Job.
So if you know of a DB opportunity or just want to talk Databases, let me know.
Thanks.
I was recently presented with The Code Book and while leafing through the pages during a moment of boredom I managed to create a simple crypto using the Julius Caesar character substitution method using Sybase T-SQL. And though I’m sure that the resulting encrypted text could be broken with brute force, it would not be easy, nor very worthwhile for most messaging.
In this world of spying and privacy invasion from all directions, a little personal crypto might be in order, particularly if one is inclined to be suspicious of commercial algorithms. and while this stored procedure is simple, it can be enhanced, feel free to use it for your own needs.
UPDATE: This is stronger than used Here: BA jihadist relied on Jesus-era encryption
CREATE PROCEDURE dbo.simple_crypto
(
@key_word varchar(25),
@message varchar(255),
@direction varchar(8)
)
as
set nocount on
declare
@key_input varchar(20),
@key varchar(27),
@key2 char(27),
@olumn int, @olumnk int,
@input varchar(255),
@olumnb int,
@output varchar(255),
@out char(1), @a_char char(1),
@undone varchar(255),
@count int
select @count = 97, @olumnk = 1
select @key_input = lower(@key_word) –‘branedy’
select @input = lower(@message)
create table #alpha (a_char char(1))
while @count <= 122
begin
insert into #alpha
values (char(@count))
select @count = @count + 1
end
select @key = char(32)
while @olumnk <= datalength(@key_input)
begin
select @out = substring(@key_input, @olumnk, 1)
delete from #alpha where a_char = @out
if @@rowcount = 1
begin
select @key = @key + @out
end
select @olumnk = @olumnk+1
end
select @key = @key + a_char from #alpha
drop table #alpha
select
@olumn = 1,
@olumnb = 1,
@key2 = ‘abcdefghijklmnopqrstuvwxyz{‘
—————–encrypt
if @direction = ‘Cipher’
begin
while @olumnb <= datalength(@input)
begin
select @output = @output + char(charindex(substring(@input, @olumnb,1), @key) + 96)
select @olumnb = @olumnb+1
end
select @input + ‘ = ‘ + @output as ‘Encrypted’
end
——————————————-decrypt
if @direction = ‘Decipher’
begin
select @output =@message
while @olumn <= datalength(@output)
begin
select
@undone = @undone+ char(ascii(substring(@key, charindex(substring(@output, @olumn,1), @key2),1))) –,
select @olumn = @olumn+1
end
select @output + ‘ = ‘ + @undone as ‘Decrypted’
end
——————————–
select ‘From the key ‘ + @key
return
GO
RW_Jordan@Cork.Ireland 