SSIS package fails to execute when scheduled as a job

Recently, I was creating an SSIS package and the package when executed in the BIDS environment was successfully run, but when scheduled through a job in SSMS gave me an error:
Code: 0xC0016016 Source: Description: Failed to decrypt protected XML node “DTS:Password” with error 0×8009000B “Key not valid for use in specified state.”. You may not be authorized to access this information. This error occurs when there is a cryptographic error. Verify that the correct key is available. End Error Error: 2008-09-15 16:34:32.57 Code: 0xC0202009 Source: TextFileImport Connection manager “DecipherDestination” Description: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0×80004005. An OLE DB record is available. Source: “Microsoft SQL Native Client” Hresult: 0×80004005 Description: “Login timeout expired”. An OLE DB record is available. Source: “Microsoft SQL Native Client” Hresult: 0×80004005 Descrip… The package execution fa… The step failed.

Meanwhile I came across a good post describing the same situation:

http://decipherinfosys.wordpress.com/2008/09/17/scheduling-ssis-packages-with-sql-server-agent/

Thanks to the original poster !!