I would like to pass an md5 hashed password in the Connection string of npgsql. Is it possible?
if so, from which string do I need to generate the md5 hash?
thanks
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Is there a feature in SQL Server that makes the values we give for "passwords" encrypted/encoded? If not, what is the simplest way to encode my passwords and store them in a table?
There is a function called PWDENCRYPT that will help you do this
I study SQLInjection testing it on one site, that use Microsoft SQL Server 2008.
sqlmap-dev$ python sqlmap.py -u "https://site?id=239" --current-user --current-db -b --users --privileges --passwords
Receive users login and hashed password:
Like this: 0x01005847e7a1ffa21b9c6811420f0e502612c8dd976f685f63a6
The question is, how I can know it?
I understand that I cannot really reverse the hashed string.
I find this: https://stackoverflow.com/a/18154134/2264941
As I understand:
0x0100 - use SHA1
5847e7a1 - salt
ffa21b9c6811420f0e502612c8dd976f685f63a6 - hashed password with salt
Is this algoritm correct for MS SQL 2008 ?
Maybe there is some online instruments that can help me?
You cannot do this. That is literally the whole point in hashing and salting... You could try a password cracker but it will take A LONG TIME.
I want to decrypt password in SQL Server 2012 using DES to send that password in the mail using a SQL Server job.
Can anyone help me?
Thanks in advance.
You shouldn't really be de-encrypting passwords. And either not send passwords thru the emails!
And no, there's usually a random salt in the encryption, so you cannot decrypt it like that. Only Brute Force, because it's weak encryption method nowadays.
For Brute Force you can use for example pwdcompare - More at MSDN pwdcompare
I want to decrypt passwords stored in my database on Sql Server 2008 which were encrypted using Exec master.dbo.xp_sha1 #Password, #EncPassword output .Is it possible to decrypt?
encrypted passwords look like this : xxstgggettebbqyyayujjweee
Thanks
xp_sha1 is a not standard master stored procedure, it is not included in any sql server i've seen, but doing a quick google i came across: http://www.xpcrypt.com/xpho/xp_sha1.htm
As I stated in my answer/comments in your question Encrypt passwords on Sql Server 2008 using SHA1 encryption is not the same thing as hashing. SHA1 is a hash, not an encryption. Encryption can be undone, hashing cannot.
The links called out in the answer for the last question go through this in some detail, but here are several articles specifically around the differences between encryption and hashing:
Difference between Hashing a Password and Encrypting it
http://www.darkreading.com/safely-storing-user-passwords-hashing-vs-encrypting/a/d-id/1269374
Please Understand that there is a fundamental difference between encrypting and hashing.
If you encrypt "password" to "123809dsfajsfoiwj" as an example, knowing the key and encryption method, you can arrive back at "password" through an appropriate decrypt.
Using SHA1 and hashing "password" there is no way to ever reverse the hashed "jdsfioajd0f98uas" (example) back to the original "password". Hashes are created the same each time given the same input, so hashes are compared to hashes for "validating passwords". You never arrive back at the original.
I have a database on a cpanel server, which contains a user field called 'password'. When I look at the field through phpmyadmin, all the passwords appear as md5 encrypted.
So for example, a password thats '12345' would be encrypted and appearing in the database as "e10adc3949ba59abbe56e057f20f883e".
Now, on the original server, thats ok, because even if the password is encrypted in database, when I enter the password on the related website as '12345' it recognizes it and gives access.
The problem is when I export and import the database. After importing the same database into another server, naturally the password values are still encrypted in the database. But, when I try logging in into the related website, the decrypted password, tht is, '12345' does not work anymore. I have to enter the password as "e10adc3949ba59abbe56e057f20f883e" and only then I can login. So I'm guessing the problem is that the data in the password column is not getting decrypted after importing to another database, hence when I enter '12345' instead of the extended md5 value, it does not match and gives me a wrong password error.
So can anyone help me solve this issue? I am supposed to migrate this website on another server, and its a school system, and currently none of my users have access because of this issue.
Thanks.
md5 is not encryption, it's a one-way hash. You cannot find the original value from a hash.
On the second server, if the e10adc3949ba59abbe56e057f20f883e password works, the only reason I see, is that the application is not comparing the hash of the input value it received from the user, it's comparing the input value itself.