Sometimes it can make sense to convert a SecureString back to a regular string, for example because you have used the shielded input provided by Read-Host:
$secret = Read-Host -Prompt 'Enter Keypass' -AsSecureString
This prompts the user to enter secret and now the input is a SecureString:
PS> $secret System.Security.SecureString
To make it plain text again, use the SecureString to create a PSCredential object, which comes with a method to decrypt the password:
$secret = Read-Host -Prompt 'Enter Keypass' -AsSecureString [System.Management.Automation.PSCredential]::new('hehe',$secret).GetNetworkCredential().Password
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