Created
September 1, 2024 19:36
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Hex Conversions (from/to Hex)
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| # Convert to/from Hex | |
| ### From Byte array to Hex String | |
| $bytes = [byte[]](10,20,30,40) | |
| # a) via .ToString() method | |
| $bytes.ForEach({$_.ToString('x2')}) -join '' | |
| # b) via the string format operator | |
| $bytes.ForEach({'{0:x2}' -f $_}) -join '' | |
| # c) via BitConverter class | |
| [System.BitConverter]::ToString($bytes).Replace('-',$null) | |
| # d) via the Convert class | |
| [System.Convert]::ToHexString($bytes) | |
| # NOTE: this is not available on PS v5 | |
| # this is only available on PS v7+ | |
| # e) via Format-Hex | |
| (Format-Hex -InputObject $bytes).HexBytes.Replace(' ',$null) | |
| ### From Hex to Int | |
| $Hex = '1e' | |
| # a) via .Parse() method from Int type | |
| [int]::Parse($Hex,'AllowHexSpecifier') | |
| # NOTE: the "AllowHexSpecifier", is from the enum [System.Globalization.NumberStyles] | |
| # b) interactively on the console | |
| 0x1e | |
| # c) via Invoke-Expression | |
| Invoke-Expression -Command "0x$Hex" | |
| ### From Hex String to Byte Array | |
| $Hex = '0A141E28' | |
| # a) via Convert class | |
| [System.Convert]::FromHexString($Hex) | |
| # NOTE: this is not available on PS v5 | |
| # this is only available on PS v7+ | |
| # b) via .Parse() method from Int type | |
| [regex]::Matches($Hex,'.{2}').Value | foreach {[int]::Parse($_,'AllowHexSpecifier') -as [byte]} | |
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