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Windows 7: minor issue--CRC-SHA ?

1 Week Ago   #1
RoWin7

Win 7 Ultimate 64-bit
 
 
minor issue--CRC-SHA ?

Some of my context menus are already huge. What's CRC-SHA, why has it recently appeared in my context menus, and how do I get rid of it?


My System SpecsSystem Spec
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1 Week Ago   #2
F22 Simpilot

Windows 7 Ultimate x64
 
 

Well, retrace your steps. Do you remember what software you have added recently that could have stuck it there?

What it does is compute a hash for a file for file verification. Have you ever been to a website that has a download and it offers say a MD5 hash long string of numbers and letters, or a SHA hash of a long string of letters and numbers? Your right click context menu more than likely generates that number based on the file or folder you right click and select the CRC for. That number is unique to that file/folder and only that file/folder. That way if there is a change to that file/folder in even the smallest of changes the hash number will be vastly different. Thus the hash string is used to make sure your download matches the hash of what the website gives you to make sure that download hasn't been corrupted or tampered with in anyway.

For me I use a program called HashCalc. When I download something especially if it's very important like my FTP client, I check its hash then compare that value to the website's.

Look here. Downloading WinSCP-5.13.5-Setup.exe :: WinSCP

He offers three different hash checks. MD5, SHA-1 and SHA-256. Idelaly you'd used SHA-256 since it's not so prone to collisions in mathematical speak. But it doesn't matter what hash you use to verify the download. MD5 would be good enough. So if you download WinSCP and right click that file and select your CRC right click context menu, you should get a hash. It might be CRC32 though. [s]Not MD5, SHA-1 or SHA-256, etc.[/s] I see your context menu does offer SHA. Not sure which one.
My System SpecsSystem Spec
1 Week Ago   #3
RoWin7

Win 7 Ultimate 64-bit
 
 

"Well, retrace your steps. Do you remember what software you have added recently that could have stuck it there? Have you ever been to a website that has a download and it offers say a MD5 hash long string of numbers and letters, or a SHA hash of a long string of letters and numbers?"

No, it's all too technical for me, and I won't be using it, but thanks for trying. Last programs I installed were new versions of Opera and Flash, and CDBurnerXP. I always uncheck the box if there's any bundled software. I'm glad it was nothing evil.
My System SpecsSystem Spec
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1 Week Ago   #4
wither 2

Windows 7 Pro SP1 64 bit
 
 

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1 Week Ago   #5
RoWin7

Win 7 Ultimate 64-bit
 
 

Yes, many thanks.
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1 Week Ago   #6
wither 2

Windows 7 Pro SP1 64 bit
 
 

Great!
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 minor issue--CRC-SHA ?




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