Web.config Encryption and Decryption

For aspnet_regiis
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C:\Windows\Microsoft.NET\Framework\v4.0.30319
~\Microsoft.NET\Framework\v4.0.30319

Encryption
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aspnet_regiis -pef "appSettings" "D:\Anyfolder\project.Web" -prov "DataProtectionConfigurationProvider"

Decryption
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aspnet_regiis -pdf "appSettings" "D:\Anyfolder\project.Web"