How to specify a password on the command line of an SSIS package run

I am having an issue where I need to be able to specify the password when I run my packages.

This article http://support.microsoft.com/kb/918760 says:

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Method 3: Set the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword

Change the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword. This setting uses a password for encryption. You can then modify the SQL Server Agent job step command line to include this password.

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That all sounds well and good. But where and how to you specify the password?

Here is an example of my curren开发者_如何学Ct command line:

/FILE "C:\Program Files\Microsoft SQL Server\100\DTS\Packages
       \MainSSISPackage.dtsx"  /CONFIGFILE "C:\Program Files
       \Microsoft SQL Server\100\DTS\Packages\DataConfig.dtsConfig"
        /CHECKPOINTING OFF /REPORTING E

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What about this?

/De[crypt] password 

https://learn.microsoft.com/en-us/sql/integration-services/packages/dtexec-utility?view=sql-server-ver16

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/FILE "\"E:\SSIS\New folder\test\test\Package.dtsx\"" /DECRYPT  password /CHECKPOINTING OFF  /REPORTING E

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Try dtexec option

/P[assword]password