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In cryptography, DEAL (Data Encryption Algorithm with Larger blocks) is a symmetric block cipher derived from the Data Encryption Standard (DES). The design was proposed in a report by Lars Knudsen in 1998, and was submitted to the AES contest by Richard Outerbridge (who notes that Knudsen had presented the design at the SAC conference in 1997).
DEAL is a Feistel network which uses DES as the round function. It has a 128-bit block size and a variable key size of either 128, 192, or 256 bits. For key sizes of 128 and 192 bits, the cipher uses 6 rounds, increasing to 8 for the 256-bits size. The scheme has a comparable performance to Triple DES, and was relatively slow compared to many other AES candidates.

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  1. R

    Green Deal or Out!

    There are many installations taking place up and down the country under the Eco funding Scheme. This is where the house hold who receives certain benefits is awarded a grant to have their non-efficient low grade boiler exchanged for an efficient one. The maze through getting to be a Green Deal...
  2. A

    Green Deal installs

    Hi , Does anybody know if you have to be a registered GDI to install gas boilers if you get work from a company that is PAS 2030 accredited. Thanks Alan
  3. B

    green deal

    I have been invited to a fully funded day to help me take part in the green deal it from qmsa anyone know anything about this
  4. S

    Green Deal Installers

    allright guys is anyone a green deal installer anyone gave it any thoughts, was thinking about it but not sure if it is worth it, Steven
  5. A

    green deal

    anybody on here gone for the green deal registration ? I have posted it in the oil section as im oftec only, so aimed at other oil engineers. has it proved successful ? has it brought in more work etc ? im looking to expand slightly and want to make sure whatever i invest in will be worth while .
  6. J

    How appliances deal with dirt in the water

    Hi folks, I'm led to believe that water in a normal gravity fed system can contain impurities or, basically, can be dirty. I'm just wondering how appliances deal with this. Reason being I want to try out using a solenoid valve to control the water flow in a certain situation but don't want to...
  7. R

    green deal

    im signing up to be a green deal installer ive paid NAPIT to come out to check one of our installs they also check to see if your set up right before they make you an accredited green deal installer, my name is down with plumb center for their 5 day course to be a green deal accessor. just...
  8. J

    The Green Deal

    Just reading a bit about it in the monthly mag, I have an old 1920s house that has an old myson Apollo and gravity hot water... no insulation, or double glazing with me being a landlord if I got an assessor out.... Would the works sThat got carried on, simply go onto the tenants fuel bill ...
  9. F

    Green Deal

    I've just managed to read the new edition of GS magazine (the wall papered in fire was ridicules) and am seriously confused. They have published 15 pages of info on the Green Deal and I am scratching my head. It is being dangled in front of us like a golden goose, but I can't find one positive...
  10. A

    green deal

    trying to read about these goverment ideas which our politicians seem to spend fortunes setting up and advertising, the latest 'Green Deal' which lets face it comes with a huge amount of waffle (as they all do, they talk and talk never getting to the point) as far as i can make out is only a...
  11. M

    Green Deal - Scotland

    Alright guys, The Green Deal is about to kick off in Scotland. I know it is a good thing for us, so for those of you sitting on the fence I am interested to hear, how you have went about being authorised/accredited. For me, im hovering over a couple of "providers". Anyone with some decent...
  12. G

    green deal

    has anyone gone for this yet? i know its been discussed a few months ago, but wanted to see the generall opinion on it. Ive decided to do it and am doing the become an approved installer thing this month ready for its launch on the 28th. im not under any illusion though i fully expect the vast...
  13. J

    Green deal

    I am interested in what you all think about the green deal, personally i am not prepared to invest £1500.00 plus five days in a classroom being taught how to suck eggs to comply with yet another government whim. Just look at the RHI debacle for instance, rant over.
  14. R

    Qualify as Green Deal Advisor & Domestic Energy Assessor - £795 plus VAT - 5 evenings

    Hi All Our sister company Certifi Training has now received accreditation to offer GDA and DEA courses. This combined GDA/DEA course is aimed at existing heating engineers - it is not suitable for unqualified entrants. I don't want to oversell this course - to be honest, we are not sure...
  15. A

    Green Deal

    Hi Just a quick question if any one as come across the green deal which starts next year replacing boilers will it affect our business as I hear different stories about the boilers being fitted for free Thanks A
  16. B

    got a right numpty to deal with tomorrow

    old man has just rang me one of the cp12 i am doing tomorrow guy sounds a right *****,he is a ex vokera rep i fitted a performa he in the house 3 years ago before his time old man rings him to set it up and he says its not the boiler i would have fitted,so the old man replies buy your own house...
  17. SimonG

    Green Deal - Oil

    Green Deal Registration opens soonThe Department of Energy and Climate Change (DECC) is due to launch the Green Deal scheme at the start of October and OFTEC Registration Services have been busy setting up a class of registration for existing registrants to extend their current scope of...
  18. A

    Green Deal installer

    Anyone getting accredited as an installer in the green deal? We're going to glasgow tomor to renewables roadshow to find out about it. From waht i read online and in magazines, if your on their accredited list of installers they give you jobs to price. Does anyone know any more on this? Sounds a...
  19. R

    Green Deal

    Had a meeting with the Worcester sales rep and he reckons that in order to compete with the big boys I'm gona need Green Deal accreditation. I've never heard of this before today. He says it costs £600 for the badge. Anyone know about it and who is going to run it.
  20. R

    green deal what do you think

    hi thinking about signing up for the green deal we've been to a seminar in birmingham which it all sound really good, also someboby came to see us from saint gobain because you can do the training with them, good to here any views on it good or bad thanks.
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