I'm looking for a way to compute CRC checksums cross platform.
cksum works on Linux, AIX, HP-UX Itanium, Solaris, but is there an equivalent command available in Windows too?
%cksum run.sh
1491301976 652 run.sh
Note: I'm not interested in third party tools.
In Windows (command prompt) you can use CertUtil, here is the syntax:
CertUtil [Options] -hashfile InFile [HashAlgorithm]
for syntax explanation type in cmd:
CertUtil -hashfile -?
example:
CertUtil -hashfile C:\myFile.txt MD5
default is SHA1 it supports: MD2, MD4, MD5, SHA1, SHA256, SHA384, SHA512. Unfortunately no CRC32 as Unix shell does.
Here is a link if you want to find out more:
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/cc732443(v=ws.11)
It looks as if there is an unsupported tool for checksums from MS. It's light on features but appears to do what you're asking for. It was published in August of 2012. It's called "Microsoft File Checksum Integrity Verifier".
http://www.microsoft.com/en-us/download/details.aspx?id=11533
To avoid annoying non-checksum lines:
CertUtil -v -hashfile "your_file" SHA1 | FIND /V "CertUtil"
This will display only line(s) NOT containing CertUtil
Open Windows PowerShell, and use the below command:
Get-FileHash C:\Users\Deepak\Downloads\ubuntu-20.10-desktop-amd64.iso
Here is a C# implementation of the *nix cksum command line utility for windows https://cksum.codeplex.com/
In the year 2019, Microsoft offers the following solution for Windows 10. This solution works for SHA256 checksum.
Press the Windows key. Type PowerShell. Select Windows Powershell. Press Enter key. Paste the command
Get-FileHash C:\Users\Donald\Downloads\File-to-be-checked-by-sha256.exe | Format-List
Replace File-to-be-checked-by-sha256.exe by the name of your file to be checked.
Replace the path to your path where the file is. Press Enter key. Powershell then shows the following
Algorithm : SHA256
Hash : 123456789ABCDEFGH1234567890...
Path : C:\Users\Donald\Downloads\File-to-be-checked-by-sha256.exe
Algorithm the cksum command in linux https://www.opennet.ru/man.shtml?topic=cksum&category=1&russian=5
Powershell implementation:
function UNSIGNED($u) {
return $u -band 0xffffffff
}
function memcrc32($b){
$crctab = [uint32]"0x00000000", [uint32]"0x04c11db7", [uint32]"0x09823b6e", [uint32]"0x0d4326d9", [uint32]"0x130476dc",
[uint32]"0x17c56b6b", [uint32]"0x1a864db2", [uint32]"0x1e475005", [uint32]"0x2608edb8", [uint32]"0x22c9f00f",
[uint32]"0x2f8ad6d6", [uint32]"0x2b4bcb61", [uint32]"0x350c9b64", [uint32]"0x31cd86d3", [uint32]"0x3c8ea00a",
[uint32]"0x384fbdbd", [uint32]"0x4c11db70", [uint32]"0x48d0c6c7", [uint32]"0x4593e01e", [uint32]"0x4152fda9",
[uint32]"0x5f15adac", [uint32]"0x5bd4b01b", [uint32]"0x569796c2", [uint32]"0x52568b75", [uint32]"0x6a1936c8",
[uint32]"0x6ed82b7f", [uint32]"0x639b0da6", [uint32]"0x675a1011", [uint32]"0x791d4014", [uint32]"0x7ddc5da3",
[uint32]"0x709f7b7a", [uint32]"0x745e66cd", [uint32]"0x9823b6e0", [uint32]"0x9ce2ab57", [uint32]"0x91a18d8e",
[uint32]"0x95609039", [uint32]"0x8b27c03c", [uint32]"0x8fe6dd8b", [uint32]"0x82a5fb52", [uint32]"0x8664e6e5",
[uint32]"0xbe2b5b58", [uint32]"0xbaea46ef", [uint32]"0xb7a96036", [uint32]"0xb3687d81", [uint32]"0xad2f2d84",
[uint32]"0xa9ee3033", [uint32]"0xa4ad16ea", [uint32]"0xa06c0b5d", [uint32]"0xd4326d90", [uint32]"0xd0f37027",
[uint32]"0xddb056fe", [uint32]"0xd9714b49", [uint32]"0xc7361b4c", [uint32]"0xc3f706fb", [uint32]"0xceb42022",
[uint32]"0xca753d95", [uint32]"0xf23a8028", [uint32]"0xf6fb9d9f", [uint32]"0xfbb8bb46", [uint32]"0xff79a6f1",
[uint32]"0xe13ef6f4", [uint32]"0xe5ffeb43", [uint32]"0xe8bccd9a", [uint32]"0xec7dd02d", [uint32]"0x34867077",
[uint32]"0x30476dc0", [uint32]"0x3d044b19", [uint32]"0x39c556ae", [uint32]"0x278206ab", [uint32]"0x23431b1c",
[uint32]"0x2e003dc5", [uint32]"0x2ac12072", [uint32]"0x128e9dcf", [uint32]"0x164f8078", [uint32]"0x1b0ca6a1",
[uint32]"0x1fcdbb16", [uint32]"0x018aeb13", [uint32]"0x054bf6a4", [uint32]"0x0808d07d", [uint32]"0x0cc9cdca",
[uint32]"0x7897ab07", [uint32]"0x7c56b6b0", [uint32]"0x71159069", [uint32]"0x75d48dde", [uint32]"0x6b93dddb",
[uint32]"0x6f52c06c", [uint32]"0x6211e6b5", [uint32]"0x66d0fb02", [uint32]"0x5e9f46bf", [uint32]"0x5a5e5b08",
[uint32]"0x571d7dd1", [uint32]"0x53dc6066", [uint32]"0x4d9b3063", [uint32]"0x495a2dd4", [uint32]"0x44190b0d",
[uint32]"0x40d816ba", [uint32]"0xaca5c697", [uint32]"0xa864db20", [uint32]"0xa527fdf9", [uint32]"0xa1e6e04e",
[uint32]"0xbfa1b04b", [uint32]"0xbb60adfc", [uint32]"0xb6238b25", [uint32]"0xb2e29692", [uint32]"0x8aad2b2f",
[uint32]"0x8e6c3698", [uint32]"0x832f1041", [uint32]"0x87ee0df6", [uint32]"0x99a95df3", [uint32]"0x9d684044",
[uint32]"0x902b669d", [uint32]"0x94ea7b2a", [uint32]"0xe0b41de7", [uint32]"0xe4750050", [uint32]"0xe9362689",
[uint32]"0xedf73b3e", [uint32]"0xf3b06b3b", [uint32]"0xf771768c", [uint32]"0xfa325055", [uint32]"0xfef34de2",
[uint32]"0xc6bcf05f", [uint32]"0xc27dede8", [uint32]"0xcf3ecb31", [uint32]"0xcbffd686", [uint32]"0xd5b88683",
[uint32]"0xd1799b34", [uint32]"0xdc3abded", [uint32]"0xd8fba05a", [uint32]"0x690ce0ee", [uint32]"0x6dcdfd59",
[uint32]"0x608edb80", [uint32]"0x644fc637", [uint32]"0x7a089632", [uint32]"0x7ec98b85", [uint32]"0x738aad5c",
[uint32]"0x774bb0eb", [uint32]"0x4f040d56", [uint32]"0x4bc510e1", [uint32]"0x46863638", [uint32]"0x42472b8f",
[uint32]"0x5c007b8a", [uint32]"0x58c1663d", [uint32]"0x558240e4", [uint32]"0x51435d53", [uint32]"0x251d3b9e",
[uint32]"0x21dc2629", [uint32]"0x2c9f00f0", [uint32]"0x285e1d47", [uint32]"0x36194d42", [uint32]"0x32d850f5",
[uint32]"0x3f9b762c", [uint32]"0x3b5a6b9b", [uint32]"0x0315d626", [uint32]"0x07d4cb91", [uint32]"0x0a97ed48",
[uint32]"0x0e56f0ff", [uint32]"0x1011a0fa", [uint32]"0x14d0bd4d", [uint32]"0x19939b94", [uint32]"0x1d528623",
[uint32]"0xf12f560e", [uint32]"0xf5ee4bb9", [uint32]"0xf8ad6d60", [uint32]"0xfc6c70d7", [uint32]"0xe22b20d2",
[uint32]"0xe6ea3d65", [uint32]"0xeba91bbc", [uint32]"0xef68060b", [uint32]"0xd727bbb6", [uint32]"0xd3e6a601",
[uint32]"0xdea580d8", [uint32]"0xda649d6f", [uint32]"0xc423cd6a", [uint32]"0xc0e2d0dd", [uint32]"0xcda1f604",
[uint32]"0xc960ebb3", [uint32]"0xbd3e8d7e", [uint32]"0xb9ff90c9", [uint32]"0xb4bcb610", [uint32]"0xb07daba7",
[uint32]"0xae3afba2", [uint32]"0xaafbe615", [uint32]"0xa7b8c0cc", [uint32]"0xa379dd7b", [uint32]"0x9b3660c6",
[uint32]"0x9ff77d71", [uint32]"0x92b45ba8", [uint32]"0x9675461f", [uint32]"0x8832161a", [uint32]"0x8cf30bad",
[uint32]"0x81b02d74", [uint32]"0x857130c3", [uint32]"0x5d8a9099", [uint32]"0x594b8d2e", [uint32]"0x5408abf7",
[uint32]"0x50c9b640", [uint32]"0x4e8ee645", [uint32]"0x4a4ffbf2", [uint32]"0x470cdd2b", [uint32]"0x43cdc09c",
[uint32]"0x7b827d21", [uint32]"0x7f436096", [uint32]"0x7200464f", [uint32]"0x76c15bf8", [uint32]"0x68860bfd",
[uint32]"0x6c47164a", [uint32]"0x61043093", [uint32]"0x65c52d24", [uint32]"0x119b4be9", [uint32]"0x155a565e",
[uint32]"0x18197087", [uint32]"0x1cd86d30", [uint32]"0x029f3d35", [uint32]"0x065e2082", [uint32]"0x0b1d065b",
[uint32]"0x0fdc1bec", [uint32]"0x3793a651", [uint32]"0x3352bbe6", [uint32]"0x3e119d3f", [uint32]"0x3ad08088",
[uint32]"0x2497d08d", [uint32]"0x2056cd3a", [uint32]"0x2d15ebe3", [uint32]"0x29d4f654", [uint32]"0xc5a92679",
[uint32]"0xc1683bce", [uint32]"0xcc2b1d17", [uint32]"0xc8ea00a0", [uint32]"0xd6ad50a5", [uint32]"0xd26c4d12",
[uint32]"0xdf2f6bcb", [uint32]"0xdbee767c", [uint32]"0xe3a1cbc1", [uint32]"0xe760d676", [uint32]"0xea23f0af",
[uint32]"0xeee2ed18", [uint32]"0xf0a5bd1d", [uint32]"0xf464a0aa", [uint32]"0xf9278673", [uint32]"0xfde69bc4",
[uint32]"0x89b8fd09", [uint32]"0x8d79e0be", [uint32]"0x803ac667", [uint32]"0x84fbdbd0", [uint32]"0x9abc8bd5",
[uint32]"0x9e7d9662", [uint32]"0x933eb0bb", [uint32]"0x97ffad0c", [uint32]"0xafb010b1", [uint32]"0xab710d06",
[uint32]"0xa6322bdf", [uint32]"0xa2f33668", [uint32]"0xbcb4666d", [uint32]"0xb8757bda", [uint32]"0xb5365d03",
[uint32]"0xb1f740b4"
$n = $b.length
$i = $c = $s = 0
foreach ($c in $b){
$tabidx = (($s -shr 24) -bxor $c)
$s = ((UNSIGNED($s -shl 8)) -bxor $crctab[$tabidx])
}
while($n -ne 0){
$c = ($n -band 0xff)
$n = ($n -shr 8)
$s = (($s -shl 8) -bxor ($crctab[($s -shr 24) -bxor $c]))
}
return (-bnot $s)
}
function cksum($fname) {
$buffer=[System.IO.File]::ReadAllBytes($fname)
$CRC = memcrc32($buffer)
Write-Host $CRC $buffer.length "$fname"
}
cksum("PATH_TO_FILE")
More fustly implementation, with C# code. Works with powershell2.0
$Source = @"
using System;
public class memcrc
{
public uint check(byte[] b)
{
uint[] crctab = {
0x00000000,
0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6,
0x2b4bcb61, 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, 0x5f15adac,
0x5bd4b01b, 0x569796c2, 0x52568b75, 0x6a1936c8, 0x6ed82b7f,
0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, 0x709f7b7a,
0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58,
0xbaea46ef, 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033,
0xa4ad16ea, 0xa06c0b5d, 0xd4326d90, 0xd0f37027, 0xddb056fe,
0xd9714b49, 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, 0xe13ef6f4,
0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5,
0x2ac12072, 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, 0x7897ab07,
0x7c56b6b0, 0x71159069, 0x75d48dde, 0x6b93dddb, 0x6f52c06c,
0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1,
0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b,
0xbb60adfc, 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698,
0x832f1041, 0x87ee0df6, 0x99a95df3, 0x9d684044, 0x902b669d,
0x94ea7b2a, 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, 0xc6bcf05f,
0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80,
0x644fc637, 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, 0x5c007b8a,
0x58c1663d, 0x558240e4, 0x51435d53, 0x251d3b9e, 0x21dc2629,
0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, 0x3f9b762c,
0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e,
0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65,
0xeba91bbc, 0xef68060b, 0xd727bbb6, 0xd3e6a601, 0xdea580d8,
0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, 0xae3afba2,
0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74,
0x857130c3, 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, 0x7b827d21,
0x7f436096, 0x7200464f, 0x76c15bf8, 0x68860bfd, 0x6c47164a,
0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, 0x18197087,
0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d,
0x2056cd3a, 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce,
0xcc2b1d17, 0xc8ea00a0, 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb,
0xdbee767c, 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, 0x89b8fd09,
0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf,
0xa2f33668, 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
};
uint i=0, tabidx=0;
uint c = 0, s = 0;
uint n = (uint) b.Length;
for (i = 0; i < n; i++) {
c = b[i];
tabidx = (s >> 24) ^ c;
s = (s << 8) ^ crctab[tabidx];
}
while (n != 0) {
c = n & 0xff;
n >>= 8;
s = (s << 8) ^ crctab[(s >> 24) ^ c];
}
return ~s;
}
}
"@
Add-Type -TypeDefinition $Source
$memcrc32 = New-Object memcrc
function cksum($fname) {
$buffer=[System.IO.File]::ReadAllBytes($fname)
$CRC = $memcrc32.check($buffer)
return $CRC
}
cksum C:\File.txt
In combination of answers of @Cassian and @Hllitec and from https://stackoverflow.com/a/42706309/1001717 here my solution, where I put (only!) the checksum value into a variable for further processing:
for /f "delims=" %i in ('certutil -v -hashfile myPackage.nupkg SHA256 ^| find /i /v "sha256" ^| find /i /v "certutil"') do set myVar=%i
To test the output you can add a piped echo command with the var:
for /f "delims=" %i in ('certutil -v -hashfile myPackage.nupkg SHA256 ^| find /i /v "sha256" ^| find /i /v "certutil"') do set myVar=%i | echo %myVar%
A bit off-topic, but FYI: I used this before uploading my NuGet package to Artifactory. BTW. as alternative you can use JFrog CLI, where checksum is calculated automatically.
