July 26, 2016 at 6:57 am
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:
Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
thanks.
July 26, 2016 at 7:14 am
BLOB_EATER (7/26/2016)
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
thanks.
A couple things. First this should be it's own thread because we try to keep technical discussions away from the water cooler. Second, there is no content to this post. Did you forget an attachment maybe?
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Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/
July 26, 2016 at 7:36 am
Sean Lange (7/26/2016)
BLOB_EATER (7/26/2016)
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
thanks.
A couple things. First this should be it's own thread because we try to keep technical discussions away from the water cooler. Second, there is no content to this post. Did you forget an attachment maybe?
Ok fair point I will create a thread in the proper section. (No attachments I was trying to engage someone on the concept). thanks
July 26, 2016 at 7:45 am
Phil Parkin (7/26/2016)
ChrisM@Work (7/26/2016)
BrainDonor (7/26/2016)
Somewhere deep within the bowels of Microsoft there's a team of developers who believe that there's nothing at all wrong with the way SSIS ascertains the metadata for the columns within an Excel spreadsheet.One day I would like to meet these people, but only if I have full immunity from prosecution.
Very well put, Steve.
If you like I'll hold 'em down whilst you perform the surgery.
This is one team I'd like to be a part of.
If we could also get hold of the related Excel team who believe it's OK to open a text/CSV file and, without warning, alter the data it contains – "because Excel knows best" – I'd pay handsomely.
I would really like to have a discussion with the genius tool bag who thought scientific notation was the appropriate format for large strings of numbers :angry:
I wonder how many hours are wasted each year forcing excel to open documents like that properly and explaining to less technical people that excel just mangled their data with no warning.
July 26, 2016 at 7:55 am
BLOB_EATER (7/26/2016)
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
Yes.
July 26, 2016 at 7:58 am
BLOB_EATER (7/26/2016)
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
Yup. TDE = encrypted at rest, encrypted on disk, so hex editor sees garbage.
DBCC Page would see the decrypted value, because decrypted in memory.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
July 26, 2016 at 8:27 am
thanks Gail and Hugo. I'm off to do the write up now.
July 26, 2016 at 8:35 am
ZZartin (7/26/2016)
Phil Parkin (7/26/2016)
ChrisM@Work (7/26/2016)
BrainDonor (7/26/2016)
Somewhere deep within the bowels of Microsoft there's a team of developers who believe that there's nothing at all wrong with the way SSIS ascertains the metadata for the columns within an Excel spreadsheet.One day I would like to meet these people, but only if I have full immunity from prosecution.
Very well put, Steve.
If you like I'll hold 'em down whilst you perform the surgery.
This is one team I'd like to be a part of.
If we could also get hold of the related Excel team who believe it's OK to open a text/CSV file and, without warning, alter the data it contains – "because Excel knows best" – I'd pay handsomely.
I would really like to have a discussion with the
geniustool bag who thought scientific notation was the appropriate format for large strings of numbers :angry:I wonder how many hours are wasted each year forcing excel to open documents like that properly and explaining to less technical people that excel just mangled their data with no warning.
Hey, who needs leading zeros, and who needs a 16 digit number with the 16th digit anyway? Even with the CSV file has double quotes around the number.
I spend way too much time trying to convince people that sending data as an Excel spreadsheet is a bad idea.
July 26, 2016 at 10:00 am
BLOB_EATER (7/26/2016)
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
thanks.
I use XVI32 to examine mdf files. I create a table and insert "aaaaaaa" in a table. Then search for that in the hex editor. Then enable TDE and do the same thing.
July 26, 2016 at 12:05 pm
Apparently the person I'm going to be interviewing shortly has access to and knows how to use DBCC TimeWarp since they started their current position in December 2016. Anyone else ever interview someone from the future before?
Jack Corbett
Consultant - Straight Path Solutions
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July 26, 2016 at 12:20 pm
Jack Corbett (7/26/2016)
Apparently the person I'm going to be interviewing shortly has access to and knows how to use DBCC TimeWarp since they started their current position in December 2016. Anyone else ever interview someone from the future before?
I haven't yet but it was a long time ago.
_______________________________________________________________
Need help? Help us help you.
Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.
Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.
Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/
July 26, 2016 at 12:24 pm
Haven't seen the UK Kitchen spam in a while.
July 26, 2016 at 12:42 pm
Lynn Pettis (7/26/2016)
Haven't seen the UK Kitchen spam in a while.
You're welcome.
Thomas Rushton
blog: https://thelonedba.wordpress.com
July 26, 2016 at 1:09 pm
Sean Lange (7/26/2016)
Jack Corbett (7/26/2016)
Apparently the person I'm going to be interviewing shortly has access to and knows how to use DBCC TimeWarp since they started their current position in December 2016. Anyone else ever interview someone from the future before?I haven't yet but it was a long time ago.
My favourite one was "6 years of experience in SQL Server 2008", submitted in 2009. Guess he must have been a master of DBBC TimeWarp.
😎
BTW, he didn't know T-SQL from HTML 😀
July 26, 2016 at 1:43 pm
BLOB_EATER (7/26/2016)
Hey guys I was wondering if someone could confirm if the experiment that I am doing below is what one would expect from enabling TDE:Before enabling TDE I would find the PageID of interest then calculate the offset and use a hex-editor to navigate to it within the MDF - here you can see the ASCII representation of the data.
Then I would enable TDE and do the same as above but this time showing all sort of random characters - Im guessing this is the encryption taking effect? Is that right?
thanks.
yes
Jason...AKA CirqueDeSQLeil
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