Connect-AzAccount with Saved Encryped Credential in Powershell

# First Create Credential File

$CredentailFileName = "AzCredential.txt";

$Credential = Get-Credential

$UserName =[Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes($Credential.UserName))
$Password = ConvertFrom-SecureString -SecureString $Credential.Password -Key (1..16)

($UserName,$Password) | Set-Content -Path $CredentailFileName

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# Read Credential File and Connect-AzAccount

$CredentailFileName = "AzCredential.txt";

[string[]]$CredentialRead = Get-Content -Path $CredentailFileName

$UserName = [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($CredentialRead[0]))
$Password = $CredentialRead[1] | ConvertTo-SecureString -Key (1..16)

$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $UserName, $Password

Connect-AzAccount -Credential $Credential