File:Public key making.svg

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Summary

DescriptionPublic key making.svg	Public-key cryptography / asymmetric cryptography, creating a key pair. A big random number is used to create a key pair. When the keys have been made the big random number is thrown away. Without knowledge of the random number it should be "impossible" to create the private key from the public key. (In many algorithms it is also "impossible" to create the public key from the private key once the random number has been thrown away.) The public key can be freely published to the world. Note that most key making functions internally need more than one random number. To handle this the "big random number" usually is fed as a seed to a cryptographically secure random number generator that then produces many pseudo random numbers for the key making function. Original illustration by David Göthberg, Sweden. Released by David as public domain.
Date	7 August 2006
Source	Own work
Author	Davidgothberg
Other versions	This image is part in a series of images showing the four basic public-key cryptography operations: Creating a key pair, encrypting, signing, and creating a shared secret. Note that no single cryptosystem can do all three operations: For instance RSA can do encryption and signing, while Diffie–Hellman can create shared secrets. Public key making.svg Public key encryption.svg Public key signing.svg Public key shared secret.svg Public key making-ar.svg Arabic See Category:Cryptography diagrams for several related diagrams.
SVG development InfoField	The source code of this SVG is invalid due to 9 errors. This W3C-invalid diagram was created with Inkscape. This diagram uses embedded text that can be easily translated using a text editor.

Licensing

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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File history

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	Date/Time	Dimensions	User	Comment
current	02:26, 19 May 2007	426 × 384 (14 KB)	Davidgothberg	One more try, now using "Arial, Bold, 24" instead of "Arial Black, 22".
	02:22, 19 May 2007	426 × 384 (13 KB)	Davidgothberg	Trying with new font like Geni suggested. Now with the new terminology too.
	01:44, 19 May 2007	409 × 384 (15 KB)	Geni	again
	01:41, 19 May 2007	409 × 384 (14 KB)	Geni	attempt to fix 2 all this still PD
	01:36, 19 May 2007	409 × 384 (13 KB)	Geni	trying to fix
	01:08, 19 May 2007	409 × 384 (13 KB)	Davidgothberg	Reverted to earlier revision
	01:06, 19 May 2007	426 × 384 (10 KB)	Davidgothberg	Argh! Previous image did not render right on Wikipedia. Trying new version saved in slightly different way...
	01:02, 19 May 2007	426 × 384 (13 KB)	Davidgothberg	Slight change of terminology. User Birkett pointed it out and the Google test confirms it. "Key making function" -> "Key generation function"
	18:43, 21 August 2006	409 × 384 (13 KB)	Davidgothberg	Slightly improved image. (Damn, this non-wysiwyg!)
	18:39, 21 August 2006	409 × 384 (13 KB)	Davidgothberg	Slightly improved image.