MD5, SHA1, SHA256, SHA384, SHA512 or RIPEMD160… all are options with this function.
On the internet you can find lots of scripts that get the hashes, but none for both strings and files.
To that end, I’ve written the following function, to have one Get-Hash to be used in both cases.
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function Get-Hash { [cmdletbinding()] param ( [parameter(mandatory=$false,parametersetname="String")]$String, [parameter(mandatory=$false,parametersetname="File")]$File, [parameter(mandatory=$false,parametersetname="String")] [validateset("MD5","SHA1","SHA256","SHA384","SHA512","RIPEMD160")] [parameter(mandatory=$false,parametersetname="File")] [validateset("MD5","SHA1","SHA256","SHA384","SHA512","RIPEMD160")] [string]$HashType = "MD5" ) switch ($PsCmdlet.ParameterSetName) { "String" { $StringBuilder = New-Object System.Text.StringBuilder [System.Security.Cryptography.HashAlgorithm]::Create($HashType).ComputeHash([System.Text.Encoding]::UTF8.GetBytes($String))| ForEach-Object { [Void]$StringBuilder.Append($_.ToString("x2")) } $Object = New-Object -TypeName PSObject $Object | Add-Member -MemberType NoteProperty -Name 'String' -value $String $Object | Add-Member -MemberType NoteProperty -Name 'HashType' -Value $HashType $Object | Add-Member -MemberType NoteProperty -Name 'Hash' -Value $StringBuilder.ToString() $Object } "File" { $StringBuilder = New-Object System.Text.StringBuilder $InputStream = New-Object System.IO.FileStream($File,[System.IO.FileMode]::Open) switch ($HashType) { "MD5" { $Provider = New-Object System.Security.Cryptography.MD5CryptoServiceProvider } "SHA1" { $Provider = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider } "SHA256" { $Provider = New-Object System.Security.Cryptography.SHA256CryptoServiceProvider } "SHA384" { $Provider = New-Object System.Security.Cryptography.SHA384CryptoServiceProvider } "SHA512" { $Provider = New-Object System.Security.Cryptography.SHA512CryptoServiceProvider } "RIPEMD160" { $Provider = New-Object System.Security.Cryptography.CryptoServiceProvider } } $Provider.ComputeHash($InputStream) | Foreach-Object { [void]$StringBuilder.Append($_.ToString("X2")) } $InputStream.Close() $Object = New-Object -TypeName PSObject $Object | Add-Member -MemberType NoteProperty -Name 'File' -value $File $Object | Add-Member -MemberType NoteProperty -Name 'HashType' -Value $HashType $Object | Add-Member -MemberType NoteProperty -Name 'Hash' -Value $StringBuilder.ToString() $Object } } } |
Use this with my picture un-duplicator.
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