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Markus Fleschutz
2022-08-25 08:36:55 +02:00
parent 0e0dd641e3
commit 140c958b3d
3 changed files with 18 additions and 80 deletions
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43
Scripts/decrypt-file.ps1
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@ -1,8 +1,8 @@
<#
.SYNOPSIS
Decrypts the given file
Decrypts a file
.DESCRIPTION
This PowerShell script decrypts the given file.
This PowerShell script decrypts a file using the given password and AES encryption.
.PARAMETER Path
Specifies the path to the file to decrypt
.PARAMETER Password
@ -12,44 +12,13 @@
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz / License: CC0
Author: Markus Fleschutz | License: CC0
#>
param([string]$Path = "", [string]$Password = "")
function DecryptFile {
<#
.SYNOPSIS
Decrypts a file encrypted with Protect-File.
.DESCRIPTION
Decrypts a file using a provided cryptography key.
.PARAMETER FileName
File(s) to be decrypted.
.PARAMETER Key
Cryptography key as a SecureString be used for decryption.
.PARAMETER KeyAsPlainText
Cryptography key as a String to be used for decryption.
.PARAMETER CipherMode
Specifies the block cipher mode that was used for encryption.
.PARAMETER PaddingMode
Specifies the type of padding that was applied when the message data block was shorter than the full number of bytes needed for a cryptographic operation.
.PARAMETER Suffix
Suffix of the encrypted file to be removed.
.PARAMETER RemoveSource
Removes the source (encrypted) file after decrypting.
.OUTPUTS
System.IO.FileInfo. Unprotect-File will return FileInfo with the SourceFile as an added NoteProperty
#>
[CmdletBinding(DefaultParameterSetName='SecureString')]
[OutputType([System.IO.FileInfo[]])]
Param(
@ -163,11 +132,13 @@ Param(
try {
if ($Path -eq "" ) { $Path = read-host "Enter path to file" }
if ($Password -eq "" ) { $Password = read-host "Enter password" }
$StopWatch = [system.diagnostics.stopwatch]::startNew()
$PasswordBase64 = [System.Convert]::ToBase64String($Password)
DecryptFile "$Path" -algorithm AES -keyAsPlainText $PasswordBase64 -removeSource
DecryptFile "$Path" -Algorithm AES -KeyAsPlainText $PasswordBase64 -RemoveSource
"✔️ Done."
[int]$Elapsed = $StopWatch.Elapsed.TotalSeconds
"✔️ file decrypted in $Elapsed sec"
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"