Can I encrypt an indexed field?Why?

Hi，everybody!
Can I encrypt an indexed fields ?Why?
lgs
Edited by: user495600 on 2010-8-11 上午7:18

Dear user495600,
Please read the following articles;
http://it.toolbox.com/wiki/index.php/How_to_encrypt_indexed_columns_in_Oracle
http://www.oracle.com/technology/deploy/security/database-security/transparent-data-encryption/tde_faq.html#A12007
From the Oracle documentation;
Transparent Data Encryption
   1. Will encrypted data be decrypted for all users who have been authorized to see it?
   2. What is the overhead associated with TDE?
   3. What are the encryption algorithms that can be used with TDE?
   4. Is it possible to use 3rd party encryptions algorithms in place of the ones provided by TDE?
   5. Can I use TDE column encryption on columns used in foreign key constraints?
   6. Can columns that are used for joins be encrypted?
   7. Can indexed columns be encrypted?
   8. What data types and data lengths does TDE column encryption support?
   9. Does the data stay encrypted on the network?
  10. Does the database memory (SGA) contain clear-text or encrypted data?
  11. How do I know which data to encrypt?
  12. Where is the data that needs to be encrypted?
  13. With Oracle Database 11gR1, shall I use TDE column encryption or TDE tablespace encryption?
  14. How is TDE different from the encryption toolkit Oracle already provides?
  15. How is TDE licensed?
Number 7:
# Can indexed columns be encrypted?
TDE tablespace encryption supports all indexes transparently.
For TDE column encryption, the index needs to be a normal B-tree index, used for equality searches. In case of a composite, function-based index, the encrypted column cannot be the one that was used for the function. When encrypting a column with an existing index, it is recommended to first extract the index definition with dbms_metadata.get_ddl, then drop the index, encrypt the column with the 'no salt' option, and re-build the index.http://www.oracle.com/technology/obe/11gr1_db/security/tde/tde.htm
Hope That Helps.
Ogan

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    Well, this works fine if I call the getBean method from any class in the web app. But that's not what I need. I need to get a bean from outside the web app. From the "Java batch process".
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    So, the question I need you to please answer me, the question I didn't find in Google:
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    Thank you very much!

    zibilico wrote:
    But maybe, if the web service stuff gets to complicated or it doesn't fulfill my needs, I'll set up a separate Spring context, that gets loaded everytime I run the "Java batch process". It'll have it's own Spring configuration files (these will be a fragment of the web app's config files), where I'll define only the beans I need to use, say the service and the 2 DAOs, and also the DB connection. Additionally, I'll set the classpath to use the beans classes of the web app. Thus, if the service and DAOs were modified in the app server, the process would load the modified classes in the following execution.You'll almost certainly have to do that even if you do use RMI, Web services etc. to connect.
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  • EasySign: Can I or can't I modify filled fields?!

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    I've spent 40 years in the graphic arts; half of them I've wrestled with Acrobat, on some pretty complex work products having features of debatable benefit when shoehorned into PDF format. When it comes to the simple single-page monochrome Letter/A4 form -- the most abundant portable document on Earth -- we are now in Acrobat v10 and all I want to do is easily fill out a form and sign it and e-mail it back and I still can't.
    Why is life so much harder now than when I could run this through a typewriter, Adobe? What are you really doing about it for the billions? How much more of our lives' valuable moments are you going to squander?
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    You do it unconsciously; we are all forced into these mentalities by our circumstances. But all three of you experts were wrong about who listens, at least when you pray as loudly as I do:
    On Sat, Sep 1, 2012 at 2:18 PM, Kevin M Lynch <[email protected]> wrote:
    Hi Peter,
    This is Kevin M. Lynch and I run the Acrobat & Document Services business at Adobe (coincidentally our CTO is also named Kevin Lynch, but I’m not him - I run the document business). 
    I saw your forum post (http://forums.adobe.com/thread/1058887) and want to apologize for the difficulties you’re having filling out and signing a form.
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    Frustrating to me, but mainly because it is no doubt frustrating for (literally) billions of others less sophisticated than me. That is my main concern, and the ball I keep my eyes on. I feel terribly sorry for them.From what I can gather, you had no problem knowing where to go and click the “Sign” panel on the right and then clicking the add text button (and let me know if otherwise).
    Well, that's a separate issue. I intuited that it was what I might need to fill out a basic form. But most people won't get even that.
    But then there were two issues that prevented filling out and signing the form from being drop-dead easy:
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    I don't know about the width of the selection range; it seemed to me that there was *no* selection tolerance. I was rolling all over the text looking for it to catch and it wouldn't, hence 75 null textareas. (Possibly the cursor just was refusing to change from I-beam to arrow, I reasoned, and clicked, but did not get into an edit mode.) My sense is that it was not going to give me an arrow no matter where I went. My workaround (which few of your millions will be patient enough to discover) was forcibly exit the I-beam mode by going to the "Place Signature" mode and then re-enter the "Add Text" mode, which then readily showed me an arrow whenever I rolled near/over a textarea, and then let me click into the textarea and modify it.
    I'm not on the subject machine. I'm on a brand-new laptop now and just upgraded its Reader from the factory 10.0.0 to 10.1.4 to get EchoSign and see if I can reproduce it here. On the same document, I appear now to be able to roll over created textareas and click the I-beam over them and get in. So it's not a global issue. The exhibiting machine is, I think, a Lenovo with Windows XP, but I will have to check this. If you need specific installation information to help isolate, please tell me what you need.
    But I'm seeing some wrong behaviors even now:
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    This is inconsistent with what I experience when I escape "Add Text" mode. (I find I can escape "Add Text" either by entering "Insert Signature," as I note above, or in another way, by manually closing the editing palette by clicking its close box.) When I move out, I appear to be in a free-cursor mode; it now prompts me with a change to an arrowhead cursor whenever I roll over a textarea, and then it puts me into something unexpected called "Typewriter" mode (the only surface indication of the difference is that a lozenge in the editing palette now says "Typewriter" instead of "Add Text".
    It is altogether unclear the functional difference between "Typewriter" mode and "Add Text" mode, or the purpose of having two different identities for two modes that seem to share some functions. Their behavior, however, is different enough to cause confusion. This could be streamlined quite a bit.
    Editing text (new or modifying) in either of these two text modes appears to be operating one pixel below the finished text after repainting.
    2)      You couldn’t add a TIFF image as signature.   I’ll have to have my team look into this as I can add one without any problems on my system.  However, like you, I don’t understand why we don’t have both TIF & TIFF in the filter so I’ll have to follow up with my team to see if there is any reason for that.
    This may also be local to that machine I was on Friday. When I return to Chicago I can check this, if it's important to you and if you are confident that doing so will bear fruit.
    Am I correct in that those were the two issues or were there others?  Once you went off the beaten path into comments you could see that we use the commenting capability, but our intent is to have it easy enough that you would never go there.  If it helps to clean up your document, you can select each blank comment  in the right side panel and hit the delete key to get rid of them.
    See above, which gives you some more information. As you can glean from between all of my acerbic comments, I felt that the user experience was in many places carelessly thought through. You provide another case in point above, speaking of "Comments" mode. The three modes -- "Add Text," "Typewriter," and "Comments" -- obviously are genetically related. Their respective purposes become indistinct and confusing to the casual user. The basic shift from mode to mode is confusing; tool depth level and state are uncertain; use metaphor for each tool is nonstandard, inconsistent, and counterintuitive; visual feedback is lacking or inconsistent; and I think in some generals and some specifics each tool's entry point and interface needs to be reworked. I realize that you're constrained by the Reader API UI, so you don't have infinite flexibility, but there are still some basic things you can do.
    Even with a working installation as I have here, it is confusing. On my View menu, I have two "Sign" and two "Tools" items. Why? I can't seem to find how to get back into "Typewriter" mode. What is it? Where is its entry point? Is it part of Sign or is it part of something else?
    Form filling could use some user workshopping to figure out how to make it intuitive. Starting from the top, ideally, Acrobat Forms, if implemented in a document, should be user-seamless with EchoSign. Whether a document is forms-enabled or not, ideally the tools should have the same look and feel. I am skeptical about that being easy. But George Johnson raised the point that you now have two distinct products serving (from the user's perspective) identical purposes. If Reader is going to be user-centric, that proposition needs to be taken into account right away. Starting with that, a universal text editing palette for both Forms and EchoSign (whatever the underlying difference) might be in order. Distinguishing among text "in stone" (the immutable background PDF); malleable superimposed text fields and images (e.g., signature); and comments needs to be treated.
    If I were god, just off the top of my head, tomorrow I would open all Acrobat documents by default in a basic "Add Text [e.g., fields and comments] or Image [e.g.,signature]" mode with a universal text-cum-graphics palette, similar to what you have but switchable within between text and image (consider PageMaker's old universal palette, dumbed down). If forms-enabled, the text palette would be activated and the cursor inside Field 1 ready to type. If not, you have an I-beam as the default. You could switch to Image mode within the palette and the palette would provide a signature subfunctionality (including EchoSign's capability of retaining as default signatureStamp), or other image type. Maybe outside that mode is panning and zooming, maybe panning and zooming are hierarchically equal to those two modes. I at least believe that the key to this is that text / comments // signatureStamp / images should now be as basic to Reader as pan/zoom. How to make those two modes intuitively switchable by the grandparents is probably not so tricky, but I would have to think about that a bit more.
    I appreciate the time you’ve already taken to struggle through this and provide feedback.  I personally want to eliminate the need to print out, sign, and fax back these stupid forms!
    You and a few billion others. Thanks for the prompt response.
    Regards,
    Kevin

  • I paid for exportpdf and everytime i try to use tool on pdf, it asks me to subscribe. i have to log into website EVERY time. not acceptable.  how can i export only form fields that were filled in?

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    Hi kstine,
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