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md4.ps1
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md4.ps1
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function Get-MD4{
PARAM(
[String]$String,
[Byte[]]$bArray,
[Switch]$UpperCase,
[Switch]$AsByteArray # Added by Nestori Syynimaa Aug 23th 2019
)
# Author: Larry.Song@outlook.com
# Reference: https://tools.ietf.org/html/rfc1320
# MD4('abc'):
# a448017aaf21d8525fc10ae87aa6729d UTF-8
# e0fba38268d0ec66ef1cb452d5885e53 Unicode
$Array = [byte[]]@()
if($String)
{
$Array = [System.Text.Encoding]::Unicode.GetBytes($String) # Edited by Nestori Syynimaa Nov 16th 2018
}
if($bArray)
{
$Array = $bArray
}
# padding 100000*** to length 448, last (64 bits / 8) 8 bytes fill with original length
# at least one (512 bits / 8) 64 bytes array
$M = New-Object Byte[] (([math]::Floor($Array.Count/64) + 1) * 64)
# copy original byte array, start from index 0
$Array.CopyTo($M, 0)
# padding bits 1000 0000
$M[$Array.Count] = 0x80
# padding bits 0000 0000 to fill length (448 bits /8) 56 bytes
# Default value is 0 when creating a new byte array, so, no action
# padding message length to the last 64 bits
@([BitConverter]::GetBytes($Array.Count * 8)).CopyTo($M, $M.Count - 8)
# message digest buffer (A,B,C,D)
$A = [Convert]::ToUInt32('0x67452301', 16)
$B = [Convert]::ToUInt32('0xefcdab89', 16)
$C = [Convert]::ToUInt32('0x98badcfe', 16)
$D = [Convert]::ToUInt32('0x10325476', 16)
# There is no unsigned number shift in C#, have to define one.
Add-Type -TypeDefinition @'
public class Shift
{
public static uint Left(uint a, int b)
{
return ((a << b) | (((a >> 1) & 0x7fffffff) >> (32 - b - 1)));
}
}
'@
# define 3 auxiliary functions
function FF([uint32]$X, [uint32]$Y, [uint32]$Z)
{
(($X -band $Y) -bor ((-bnot $X) -band $Z))
}
function GG([uint32]$X, [uint32]$Y, [uint32]$Z)
{
(($X -band $Y) -bor ($X -band $Z) -bor ($Y -band $Z))
}
function HH([uint32]$X, [uint32]$Y, [uint32]$Z){
($X -bxor $Y -bxor $Z)
}
# processing message in one-word blocks
for($i = 0; $i -lt $M.Count; $i += 64)
{
# Save a copy of A/B/C/D
$AA = $A
$BB = $B
$CC = $C
$DD = $D
# Round 1 start
$A = [Shift]::Left(($A + (FF -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 0)..($i + 3)], 0)) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (FF -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 4)..($i + 7)], 0)) -band [uint32]::MaxValue, 7)
$C = [Shift]::Left(($C + (FF -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 8)..($i + 11)], 0)) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (FF -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 12)..($i + 15)], 0)) -band [uint32]::MaxValue, 19)
$A = [Shift]::Left(($A + (FF -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 16)..($i + 19)], 0)) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (FF -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 20)..($i + 23)], 0)) -band [uint32]::MaxValue, 7)
$C = [Shift]::Left(($C + (FF -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 24)..($i + 27)], 0)) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (FF -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 28)..($i + 31)], 0)) -band [uint32]::MaxValue, 19)
$A = [Shift]::Left(($A + (FF -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 32)..($i + 35)], 0)) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (FF -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 36)..($i + 39)], 0)) -band [uint32]::MaxValue, 7)
$C = [Shift]::Left(($C + (FF -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 40)..($i + 43)], 0)) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (FF -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 44)..($i + 47)], 0)) -band [uint32]::MaxValue, 19)
$A = [Shift]::Left(($A + (FF -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 48)..($i + 51)], 0)) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (FF -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 52)..($i + 55)], 0)) -band [uint32]::MaxValue, 7)
$C = [Shift]::Left(($C + (FF -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 56)..($i + 59)], 0)) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (FF -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 60)..($i + 63)], 0)) -band [uint32]::MaxValue, 19)
# Round 1 end
# Round 2 start
$A = [Shift]::Left(($A + (GG -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 0)..($i + 3)], 0) + 0x5A827999) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (GG -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 16)..($i + 19)], 0) + 0x5A827999) -band [uint32]::MaxValue, 5)
$C = [Shift]::Left(($C + (GG -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 32)..($i + 35)], 0) + 0x5A827999) -band [uint32]::MaxValue, 9)
$B = [Shift]::Left(($B + (GG -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 48)..($i + 51)], 0) + 0x5A827999) -band [uint32]::MaxValue, 13)
$A = [Shift]::Left(($A + (GG -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 4)..($i + 7)], 0) + 0x5A827999) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (GG -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 20)..($i + 23)], 0) + 0x5A827999) -band [uint32]::MaxValue, 5)
$C = [Shift]::Left(($C + (GG -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 36)..($i + 39)], 0) + 0x5A827999) -band [uint32]::MaxValue, 9)
$B = [Shift]::Left(($B + (GG -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 52)..($i + 55)], 0) + 0x5A827999) -band [uint32]::MaxValue, 13)
$A = [Shift]::Left(($A + (GG -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 8)..($i + 11)], 0) + 0x5A827999) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (GG -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 24)..($i + 27)], 0) + 0x5A827999) -band [uint32]::MaxValue, 5)
$C = [Shift]::Left(($C + (GG -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 40)..($i + 43)], 0) + 0x5A827999) -band [uint32]::MaxValue, 9)
$B = [Shift]::Left(($B + (GG -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 56)..($i + 59)], 0) + 0x5A827999) -band [uint32]::MaxValue, 13)
$A = [Shift]::Left(($A + (GG -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 12)..($i + 15)], 0) + 0x5A827999) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (GG -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 28)..($i + 31)], 0) + 0x5A827999) -band [uint32]::MaxValue, 5)
$C = [Shift]::Left(($C + (GG -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 44)..($i + 47)], 0) + 0x5A827999) -band [uint32]::MaxValue, 9)
$B = [Shift]::Left(($B + (GG -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 60)..($i + 63)], 0) + 0x5A827999) -band [uint32]::MaxValue, 13)
# Round 2 end
# Round 3 start
$A = [Shift]::Left(($A + (HH -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 0)..($i + 3)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (HH -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 32)..($i + 35)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 9)
$C = [Shift]::Left(($C + (HH -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 16)..($i + 19)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (HH -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 48)..($i + 51)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 15)
$A = [Shift]::Left(($A + (HH -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 8)..($i + 11)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (HH -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 40)..($i + 43)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 9)
$C = [Shift]::Left(($C + (HH -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 24)..($i + 27)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (HH -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 56)..($i + 59)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 15)
$A = [Shift]::Left(($A + (HH -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 4)..($i + 7)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (HH -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 36)..($i + 39)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 9)
$C = [Shift]::Left(($C + (HH -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 20)..($i + 23)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (HH -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 52)..($i + 55)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 15)
$A = [Shift]::Left(($A + (HH -X $B -Y $C -Z $D) + [BitConverter]::ToUInt32($M[($i + 12)..($i + 15)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 3)
$D = [Shift]::Left(($D + (HH -X $A -Y $B -Z $C) + [BitConverter]::ToUInt32($M[($i + 44)..($i + 47)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 9)
$C = [Shift]::Left(($C + (HH -X $D -Y $A -Z $B) + [BitConverter]::ToUInt32($M[($i + 28)..($i + 31)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 11)
$B = [Shift]::Left(($B + (HH -X $C -Y $D -Z $A) + [BitConverter]::ToUInt32($M[($i + 60)..($i + 63)], 0) + 0x6ED9EBA1) -band [uint32]::MaxValue, 15)
# Round 3 end
# Increment start
$A = ($A + $AA) -band [uint32]::MaxValue
$B = ($B + $BB) -band [uint32]::MaxValue
$C = ($C + $CC) -band [uint32]::MaxValue
$D = ($D + $DD) -band [uint32]::MaxValue
# Increment end
}
# Output start
$A = ('{0:x8}' -f $A) -ireplace '^(\w{2})(\w{2})(\w{2})(\w{2})$', '$4$3$2$1'
$B = ('{0:x8}' -f $B) -ireplace '^(\w{2})(\w{2})(\w{2})(\w{2})$', '$4$3$2$1'
$C = ('{0:x8}' -f $C) -ireplace '^(\w{2})(\w{2})(\w{2})(\w{2})$', '$4$3$2$1'
$D = ('{0:x8}' -f $D) -ireplace '^(\w{2})(\w{2})(\w{2})(\w{2})$', '$4$3$2$1'
# Output end
if($AsByteArray)
{
return [byte[]]("$A$B$C$D" -replace '..', '0x$&,' -split ',' -ne '')
}
else
{
if($UpperCase)
{
return "$A$B$C$D".ToUpper()
}
else
{
return "$A$B$C$D"
}
}
}