在线MD5散列发生器

I need to generate unique hash for objects to identify objects with the same exact attributes.

After reading a bit on the subject I decided its best to use MD5 hashing rather than java hashCode (I have a large number of objects, around 200,000-300,000).

I found many examples on how to do MD5 hashing on a string, but didn't find how to do it on an object, so that it will really be unique according to the object's attributes.

I first used this:

hashdeep -c sha256 -r -o f /var/www/html > ~/file_hashes

Then I tried this one to check using the existing File_hashes file:

hashdeep -c sha256 -k ~/file_hashes -s -X -v -r -o f /var/www/html

I added a new file and it shows the hash of the new file (and only that) in the console. However, the hash is not saved in the file_hashes file

I want a command that allows me to mantain updateed the file_hashes file so it appends new hashes as new files are added.

Of course, I don't want to recompute everything from scratch every day.

This is a follow-up to my recent question on calculating md5 hash in SAS and python. So, I'm using SAS v9.2 and there is an md5 hash function which takes in a string and returns a hash. What I'd really like though is a way to compute the hash for the file as a whole. Given that I have a hash for each record , is there any way to do this and have the file hash match up with the value obtained by using , say, python code. Taking the sashelp.shoes dataset as an example I exported this to a CSV file and manually removed double quotes and dollars and commas of the currency fields. I then computed the hash for the file as a whole using this python code:

filename = "f:/test/shoes.csv"md5_hash = hashlib.md5()with open(filename,"rb") as f:    # Read and update hash string value in blocks of 4K    for byte_block in iter(lambda: f.read(1024*1024),b''):        md5_hash.update(byte_block.replace(b'\r', b'').replace(b'\n', b''))    print(md5_hash.hexdigest())

And got this hash back as output:

f7f205b5b844bf57f5f51685969e0df0

If anyone can replicate this final hash value in SAS for that dataset that would be great.

PS I'm on SAS V9.2

I have a string which looks like this on a page response (saved as autoResponse):

... hexMD5('\262' + '****' + '\155\135\053\325\374\315\264\062\232\354\242\205\217\034\154\005'); ...

In order to capture this, I use:

var hex = autoResponse.split('hexMD5(')[1].split(')')[0];

This now gives me this string:

'\262' + '****' + '\155\135\053\325\374\315\264\062\232\354\242\205\217\034\154\005'

If I put this directly into the hexMD5() method, it thinks that the ', + symbols and white space are apart of the secret.

I tried to use replace() to remove them like so:

while(hex.split("'").length !== 1) hex = hex.replace("'", "");while(hex.split("+").length !== 1) hex = hex.replace("+", "");while(hex.split(" ").length !== 1) hex = hex.replace(" ", "");

However, when I then do hexMD5(hex) it gives me an incorrect hex. Is there anyway I can convert the hex to a string where it combines the strings together as if I was hardcoding it like

hexMD5('\262' + '****' + '\155\135\053\325\374\315\264\062\232\354\242\205\217\034\154\005');

any help would be appreciated.

I have two text file and in this txt files there is an MD5 checksums of some backup files. I am trying to compare these text files and if MD5 is same I am try to adding near "-2" if it is different adding "-1" but the problem is directories are different that is why when I compare results being always -1. How can I choose exactly MD5 place in the file? I think if I can change the [System.IO.File]::ReadAllText('C:\Users\trerulug\Documents\Inventory1\Inventory.txt') in the code it could work.

Output :

MD5       C1FA0C20EEFD90076AEFAAB199D854B9 C:\Users\william\Documents\Inventory\12348318433batch.xmlMD5       C1FA0C20EEFD90076AEFAAB199D854B9 C:\Users\william\Documents\Inventory2\12348318433batch.xml,-1MD5       86CA06D361850A9385CA475E133E4182 C:\Users\william\Documents\Inventory\12348318433batch.xml.xmlMD5       86CA06D361850A9385CA475E133E4182 C:\Users\william\Documents\Inventory2\12348318433batch.xml.xml,-1MD5       A75515C272B4716FB160DDA644BC9955 C:\Users\william\Documents\Inventory\12348318433batch.xmlMD5       A75515C272B4716FB160DDA644BC9955 C:\Users\william\Documents\Inventory2\12348318433batch.xml,-1

& {    $ErrorActionPreference = 'Stop'    $OFS = ','    try {        $To = [System.IO.File]::ReadAllText('C:\Users\Williams\Documents\Inventory1\Inventory.txt')        $From = & {            if (-not $To.EndsWith([System.Environment]::NewLine)) { '' }            Get-Content -Path C:\Users\william\Documents\Inventory2\Inventory.txt |                ForEach-Object { "$($_, @(-1, -2)[[int]$To.Contains($_)])" }        }        Add-Content -Path C:\Users\william\Documents\Inventory1\Inventory.txt -Value $From        Get-Content -Path C:\Users\trerulug\Documents\Inventory1\Inventory.txt    } catch {        $_ | Out-String | Write-Warning    }}

Expected output:

MD5       C1FA0C20EEFD90076AEFAAB199D854B9 C:\Users\william\Documents\Inventory\12348318433batch.xmlMD5       86CA06D361850A9385CA475E133E4182 C:\Users\william\Documents\Inventory2\12348318433batch.xml.xmlMD5       A75515C272B4716FB160DDA644BC9955 C:\Users\william\Documents\Inventory2\12348318433batch.xmlMD5       C1FA0C20EEFD90076AEFAAB199D854B9 C:\Users\william\Documents\Inventory2\12348318433batch.xml,-2MD5       86CA06D361850A9385CA475E133E4182 C:\Users\william\Documents\Inventory2\12348318433batch.xml.xml,-2MD5       A75515C272B4716FB160DDA644BC9955 C:\Users\william\Documents\Inventory2\12348318433batch.xml,-2