RE: FLASH: MD5 hash in F5 action script

[Damien Morton]

at 400 characters per second, this MD5 should really only be used on short

passwords, rather than as a way of fingerprinting documents.


> -----Original Message-----

>

From: .redstar. [redstarclix [dot] pt (mailto:redstarclix [dot] pt)]

> Sent: Tuesday, August 29, 2000 8:05 PM

>

To: flasherchinwag [dot] com

> Subject: RE: FLASH: MD5 hash in F5 action script

> 

> 

> John,

> 

> "what is md5? sorry for the ignorant q."

> 

> And why should a seeker of knowledge be assumed to be ignorant ?

> In very simple terms, and without attempting formal 

> correctness, MD5 is a

> way to transform a sequence of strings (text) into a fix length

> representation that uniquely identifies the original text. 

> This can, among

> other uses, be useful when you want to send passwords or 

> other sensitive

> data (card numbers for example) but do not want to transmit 

> the clear text

> version of the data so as to avoid interception.

> As MD5 is 'a one way function' you 'cant't' retrieve the 

> original data from

> the MD5 hash of the data so interception and recovery of the 

> original data

> is 'very hard'.

> The basic usage would be to have an entry field for the data 

> and then do

> calcMD5(data) and send this over the wire. When you receive 

> it you do the

> same on your side with your known local copy of what you expect (the

> password for example and compare results for a match.

> 

> Hope this helps.

> 

> .redstar.

> 

> 

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