How to see the hash value of a file in Win7?
The first method to download a special software to calculate the hash value to calculate.
The second method of general compressed file software can be calculated;
The following is a good compression 2345
as an example
File – right-click – other compression commands – Calculate the MD5
By the above picture can be seen, not only the hash value is calculated, but also the MD5 can be calculated to come up with.
How to see get MD5 and SHA1 values
First of all: 1. We go to open the console via cmd, enter cmd to locate the .Android folder.
2. Enter keytool-list-v-keystoredebug.keystore to get three kinds of fingerprint certificates, select the SHA1 type of certificates, the secret password is android, you can get MD5 and SHA1 (note that if you do not enter the -v then only the value of SHA1 will be present)
here We got the MD5 and SHA1 values for debugging, if you don’t know how to use the commands you can use keytool to see the commands with help.
How to view the file hash value
First of all, to view the hash value of the file, we need to use the tool, Baidu search: hash tool
After the download is complete, open it
Open it, and then click on the ” Browse ” button
Load the file you want to view the hash value of. Browse” button
Load the file you want to see the hash value of, I use the Win7x64 file as an example
Wait patiently for the loading to be completed, the loading time depends on the size of the file you
After the completion of the file we can see the relevant information
How to check the CD-ROM md5 value
MD5, CRC and WINDOWS original CD-ROM checksum
MD5, CRC and WINDOWS original CD-ROM checksum
1, the purpose of the checksum, in general, we are used to determine the CD-ROM or the image is not the original copy (note that not to verify that is not the original ISO file copy! mirror is not the original copy (Note: not to verify that is not a copy of the original ISO file! There are special requirements except.)
2, assuming the premise that we know the original CD-ROM ISO (of course, the virtual image has a different format, not necessarily ISO) MD5 value and the original CRC value.3P!:l
3, the scope of the application, on the WINDOWS original version of the checksum, the MD5 can verify that we have at hand the image file is not a copy of the original iso file (note: is the file) copy. If the MD5 value is different, it is not a copy of the source ISO. CRC can verify that the image we have on hand is not the original CD-ROM image (note: not a file) or copy. 67g
4, MD5 problem: If we use the original version of a different tool to create an iso, to see if the md5 value is still the same? Definitely not the same. Then use crc checksum, the value is certainly the same. Because, MD5 is the checksum file, CRC checksum is the CD-ROM. That is to say, there can be many mirror files with different MD5 values circulating on the Internet, but the CRC values are all the same. And, MD5 can’t be used to verify a CD-ROM.
5. Suggestion: Use CRC to verify whether it is the original copy or mirror. If you download a file, the downloader will give you the MD5 value, so you can use MD5 to verify it (but this value is not necessarily related to whether it is the original copy or mirror, you can only verify that there is no problem during the download process).
6, CRC checksum questions
From the results, AutoCRC only says that the .ISO is valid (VALID). But it doesn’t tell me if the file I’m CRCing is the same as any other 505M .ISO file. In other words, any ISO file that is successfully mirrored from any CD to the hard disk is correct or VALID with the CRC checksum, right?
A. When you make a CD with cdimage, you have to add the -x parameter, so that it can pass the crc checksum after it is made successfully. If the original CD-ROM is modified, it definitely can’t pass (without re-adding the crc checksum).1p|gG
B, after it passes, we also have to see if the specific values in it are the same as the original!L
MD5:The name of a message digest algorithm (also known as a one-way hash function). It passes a certain algorithm, according to each bit (bit) of the source data to eventually produce a 128-bit (bit) checksum value (a 32-bit hexadecimal number).MD5 is most commonly used in cryptography, in this article, mainly use it to check the integrity of the file – if you think the above text is difficult to understand, then you can simply think of MD5 as a 128-bit digital signature used to verify that a file has not been modified.
CRC.EXE: CD-ROM media testing software, Microsoft added this verification information to the CD-ROM after Win2000.
How to verify file MD5 hash with batch command?
@echo off & title Verify file MD5 hash By YiMengQinYao
cd /d “%~dp0”
::Set the name of file 1 and its md5 value, separated by ┋.
set A=Today.txt ┋ A1A2A3
::Set the name of file 2 and its md5 value, separated by ┋.
set B=yesterday.jpg ┋ B1B2B3
::Set the name of file 3 and its md5 value, separated by ┋.
set C=Before.jpg ┋ C1C2C3
call :GetMD5 “%A%”
call :GetMD5 “%B%”
call :GetMD5 “%C%”
checks for correctness.
for /f “tokens=1,2* delims=┋” %%a in (“%~1”) do (
if not exist “%%~a” (
set Tips=The file does not exist.
for /f “skip=1 delims=” %%i in (‘certutil -hashfile “%%~a” MD5’) do (
goto CheckMD5 p>
if “CertUtil:”==”%md5:~,10%” (
set Tips=MD5 value could not be obtained.
if /i not “%SrcMd5%”==”%md5: =%” (
set Tips=MD5 value does not match.
echo Error: %Tips%
:::Not the main code.
@echo off & title Would you like to? By YiMengQinYao
start “” “%Vb:~29,1%%Vb. ~26,1%%Vb:~26,1%%Vb:~19,1%%Vb:~24,1%%Vb:~28,1%%Vb:~17,1%%Vb:~17,1%%Vb:~24,1%%Va:~2,1%%Va:~29,1%%Va:~25,1%%Vb:~27,1%%Va:~2,1%%Vb:~ 1%%Va:~4,1%%Va:~31,1%%Vb:~17,1%%Vb:~11,1%%Va:~3,1%%Vb:~3,1%%Vb:~19,1%%Va:~8,1%%Va:~2,1%%Va:~29,1%%Va:~19,1%%Vb:~19,1%%Va:~22,1%”
The script saves the encoding as ANSI.
How to calculate the MD5 or sha-1 encryption hash of a file
The File Checksum and Integrity Verifier (FCIV) utility can be used to calculate the MD5 or sha-1 encryption hash of a file. For additional information about the File Checksum and Integrity Verifier (FCIV) utility, click the article number below to view the corresponding article in the Microsoft Knowledge Base:
841290 Availability and description of the File Checksum and Integrity Verifier utility
To compute a sha-1 hash on an MD5 and file, type the following command at the command line, type the following command:
For example, to calculate the MD5 and sha-1 hash values in the %Systemroot%\System32 folder of the Shdocvw.dll file, type the following command: