Publish Pre-release #1

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OCram85 merged 38 commits from dev into master 2017-09-21 13:32:16 +02:00
3 changed files with 163 additions and 0 deletions
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function Get-ChallengeFile {
<#
.SYNOPSIS
Reads the challenge file as binary content.
.DESCRIPTION
Use this function to tread a challenge file. Returns a [Byte[]] Array.
.PARAMETER Path
Specify a file to read.
.INPUTS
[None]
.OUTPUTS
[Byte[]]
.EXAMPLE
.\Get-RandomKey -Path "C:\TMP\Challenge.bin"
.NOTES
File Name : Get-ChallengeFile.ps1
Author : Marco Blessing - marco.blessing@googlemail.com
Requires :
.LINK
https://github.com/OCram85/PSCredentialStore
#>
[CmdletBinding()]
param(
[Parameter(Mandatory = $false)]
[string]$Path = "{0}\PSCredentialStore\Challenge.bin" -f $env:ProgramData
)
if (Test-Path $Path) {
try {
[io.file]::ReadAllBytes($Path)
}
catch {
Write-Error ("Could not read file {0}." -f $Path) -ErrorAction Stop
}
}
}

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Function Set-ChallengeFile() {
<#
.SYNOPSIS
Writes the given key into the challenge file
.DESCRIPTION
You can use the file content for ConvertTo-SecureString operations.
.PARAMETER Path
The file you wish to create.
.PARAMETER KeySize
Specify the key size for the encryption key.
.PARAMETER Force
Use this switch to override an older file version.
.INPUTS
[None]
.OUTPUTS
[None]
.EXAMPLE
.\Set-ChallengeFile -Path "C:\TMP\myfile.json" -Force
.NOTES
File Name : Set-ChallengeFile.ps1
Author : Marco Blessing - marco.blessing@googlemail.com
Requires :
.LINK
https://github.com/OCram85/PSCredentialStore
#>
[CmdletBinding()]
param(
[Parameter(Mandatory = $false)]
[string]$Path = "{0}\PSCredentialStore\Challenge.bin" -f $env:ProgramData,
[Parameter(Mandatory = $false)]
[ValidateSet(16, 24, 32)]
[string]$KeySize = "24",
[switch]$Force
)
if ((Test-Path -Path $Path)) {
if ($Force -eq $true) {
Remove-Item -Path $Path -Confirm:$false -Force
}
else {
Write-Error "The given file already exists!. Use the -Force switch to override it." -ErrorAction Stop
}
}
$PSCredentialStoreDataDir = Split-Path -Path $Path -Parent
if (-not (Test-Path $PSCredentialStoreDataDir)) {
try {
New-Item -ItemType Directory -Path $PSCredentialStoreDataDir
}
catch {
Write-Error ("Could not create the parent data dir {0}" -f $PSCredentialDataDir) -ErrorAction Stop
}
}
try {
$Keys = Get-RandomKey -Size $KeySize
[io.file]::WriteAllBytes($Path, $Keys)
}
catch {
$_.Exception | Format-List -Force | Out-String | Write-ErrorErrorAction Stop
}
}

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function Get-RandomKey {
<#
.SYNOPSIS
Returns a random key
.DESCRIPTION
You can use the key for further use with SecureStrings.
.PARAMETER Size
Define the key size. You can choose between 16, 24 and 32
.INPUTS
[None]
.OUTPUTS
Returns a Random key as [Byte[]] array.
.EXAMPLE
.\Get-RandomKey -Size 24
.NOTES
File Name : Get-RandomKey.ps1
Author : Marco Blessing - marco.blessing@googlemail.com
Requires :
.LINK
https://github.com/OCram85/PSCredentialStore
#>
[CmdletBinding()]
param(
[Parameter(Mandatory = $true)]
[ValidateSet(16, 24, 32)]
[string]$size
)
# Init the vars
[Byte[]]$Key = @()
$i = 0
while ($i -ne $size) {
$element = Get-Random -Minimum 0 -Maximum 255
Write-Debug ("The current element is {0}." -f $element)
$Key += $element
$i++
}
$Key
}