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Difference between DES and DES3 procedures in Obfuscation toolkit [message #300003] Thu, 14 February 2008 00:16 Go to next message
vivpol
Messages: 6
Registered: January 2008
Location: India
Junior Member
Hi,
I want to know that- is DESEncrypt procedure in Oracle_Obfuscation_Toolkit uses 2-key implementation as DES3 uses 2key or 3-key implementation?

or else what is the difference between the above two (DES and DES3)?

Thanks in advance.
Re: Difference between DES and DES3 procedures in Obfuscation toolkit [message #300020 is a reply to message #300003] Thu, 14 February 2008 00:55 Go to previous messageGo to next message
Michel Cadot
Messages: 64102
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_obtool.htm#i1002228

Regards
Michel
Re: Difference between DES and DES3 procedures in Obfuscation toolkit [message #300035 is a reply to message #300020] Thu, 14 February 2008 01:13 Go to previous messageGo to next message
vivpol
Messages: 6
Registered: January 2008
Location: India
Junior Member
Hi,
thanks for the reply.. But i could not find out
the answer to my query - whether 2-key implementation in DES functions and procedures?
The said document is silent on this issue.
Please help me out in understanding the logic
behind 2-key or 3-key implementation
Thanks
Re: Difference between DES and DES3 procedures in Obfuscation toolkit [message #300038 is a reply to message #300035] Thu, 14 February 2008 01:20 Go to previous message
Michel Cadot
Messages: 64102
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
DES
The DES algorithm encrypts data in 64-bit blocks using a 56-bit key.

3DES
If you are using Oracle's 3DES interface with a 2-key implementation, you must supply a single key of 128 bits as an argument to the DES3ENCRYPT procedure. With a 3-key implementation, you must supply a single key of 192 bits. Oracle then breaks the supplied key into two 64-bit keys.

Regards
Michel
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