Hi all,
I am kinda puzzled. When and Why do we use md5sum? I've read man pages for mp5sum, but didn't get anything out of it. Please, can someone explain this to me in couple of words.
Thank you all. (1 Reply)
i downloaded a Linux distribution from a FTP site today, and i found there is a file named MD5SUM in the same directory, with the following contents:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
c9a4d963a49e384e10dec9c2bd49ad73 valhalla-SRPMS-disc1.iso
41b03d068e84d2a17147aa27e704f79b ... (1 Reply)
Is it possible to call the unix command md5sum from within a C program. I am trying to write a C program that scans a directory and computes the MD5Sum of all the files in the directory. Whenever I use md5sum 'filename' I get the error 'md5sum undeclared'. Is there a header file or some library... (3 Replies)
hi All:
i write a adduser script in perl , but I don't know how to deal with the password , for it stored as md5. and i don't use the shell
command passwd. give me some advice...thanks (1 Reply)
Hello,
I need to download multiple files from an FTP server but occasionally they arrive in error so I need to perform an integrity check. I've been attempting to write a bash script that does the following:
Downloads all files including those in sub directories
Perform md5sum using... (4 Replies)
Hi,
I am trying to get the hash values of md5 of a string. I am on Redhat Linux. using the 25-27 field in the file I need to generate the md5 and append it at the end of the record as a new field.
I have tried the below code but its painfully slow. can you please suggest any alternatives or... (21 Replies)
Hi all,
I have to verify the integrity of a ISO image that is downloaded periodically on my PC. In order to do that, I've written a bash script that use the command md5sum with the aim to match the generated code with the default one created with the SIO image. The problem is that, if I start... (1 Reply)
Hello,
First of all I want to apologize because i'm not a admin or coder and maybe all my efforts to write only this small script in my life would need one week full time reading man pages and forums but...
I don't have the money to offer me to get this time and the script I want to do seems... (5 Replies)
I am getting No such file or directory if my variable contains white spaces... Is there a way to fix this?
This works
x="1.md5"
md5sum -c "$x"
This, does not
x="23\ 5\ 6\ 7\ 8\ 9\ 10.md5"
md5sum -c "$x"
md5sum: '23\ 5\ 6\ 7\ 8\ 9\ 10.md5': No such file or directory
How do I fix... (1 Reply)
Discussion started by: soichiro
1 Replies
LEARN ABOUT OPENSOLARIS
md2
dgst(1openssl) OpenSSL dgst(1openssl)NAME
dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests
SYNOPSIS
openssl dgst [-md5|-md4|-md2|-sha1|-sha|-mdc2|-ripemd160|-dss1] [-c] [-d] [-hex] [-binary] [-out filename] [-sign filename] [-passin arg]
[-verify filename] [-prverify filename] [-signature filename] [file...]
[md5|md4|md2|sha1|sha|mdc2|ripemd160] [-c] [-d] [file...]
DESCRIPTION
The digest functions output the message digest of a supplied file or files in hexadecimal form. They can also be used for digital signing
and verification.
OPTIONS -c print out the digest in two digit groups separated by colons, only relevant if hex format output is used.
-d print out BIO debugging information.
-hex
digest is to be output as a hex dump. This is the default case for a "normal" digest as opposed to a digital signature.
-binary
output the digest or signature in binary form.
-out filename
filename to output to, or standard output by default.
-sign filename
digitally sign the digest using the private key in "filename".
-passin arg
the private key password source. For more information about the format of arg see the PASS PHRASE ARGUMENTS section in openssl(1).
-verify filename
verify the signature using the the public key in "filename". The output is either "Verification OK" or "Verification Failure".
-prverify filename
verify the signature using the the private key in "filename".
-signature filename
the actual signature to verify.
-rand file(s)
a file or files containing random data used to seed the random number generator, or an EGD socket (see RAND_egd(3)). Multiple files
can be specified separated by a OS-dependent character. The separator is ; for MS-Windows, , for OpenVMS, and : for all others.
file...
file or files to digest. If no files are specified then standard input is used.
NOTES
The digest of choice for all new applications is SHA1. Other digests are however still widely used.
If you wish to sign or verify data using the DSA algorithm then the dss1 digest must be used.
A source of random numbers is required for certain signing algorithms, in particular DSA.
The signing and verify options should only be used if a single file is being signed or verified.
OpenSSL-0.9.8 Oct 11 2005 dgst(1openssl)