New-Self​Signed​Certificate PS C:\tmp\Azure> New-SelfSignedCertificate -CertStoreLocation cert:\currentuser\my -Subject "CN=Local Code Signing" -KeyAlgorithm RSA -KeyLength 2048 -Provider "Microsoft Enhanced RSA and AES Cryptographic Provider" -KeyExportPolicy Exportable -KeyUsage DigitalSignature ` -Type CodeSigningCert PSParentPath: Microsoft.PowerShell.Security\Certificate::CurrentUser\my Thumbprint Subject ---------- ------- FBEA9166C4E1429775EB6BDEE47E54E49083811C CN=Local Code Signing $cert = @(Get-ChildItem cert:\CurrentUser\My -CodeSigning)[0] Set-AuthenticodeSignature .\your-script.ps1 $cert