Showing posts with label Signed. Show all posts
Showing posts with label Signed. Show all posts

Friday, December 15, 2017

Pades A Way to Ensure the Long Term Validation on Signed PDF Documents

Pades A Way to Ensure the Long Term Validation on Signed PDF Documents

PDF signatures are basically used for signing all PDF documents but to make their working better, long term and easy the new term “PadES” has been introduced which is the abbreviation of “PDF Advanced Electronic Signatures” and it is developed a European institute named as European Telecommunications Standards Institute”.

The basic idea behind the PDF advanced electronic signature is to provide signer the opportunity to enjoy the long term validation and long term archiving of his or her electronic documents.

Long Term Validation (LTV) is a term to make sure that the digitally signed PDF document will not be rejected and authenticity of electronic signatures will be lasts for a very long time period. To solve this problem new extended term of PDF signature has been defined so than everyone will be able to make their online PDF signed documents verifiable and achievable for a long time period. This is done by embedding both the revocation information of the digital certificate used to create the digital signature and timestamp information.

Specifications of these PadES signatures are somehow similar to the simple PDF signature in term of providing Integrity, Authenticity and Non-Denial. It also helps to ensure the time stamping of certain PDF document so than the other receiving party can never claim any changes or amendments in the transferred document because the exact time, date of document signing and signer’s identity and attributes will be saved in a cryptographic form in the computer.

As PDF signatures have many other types such as visible, invisible, Certified and Approval PDF signatures, same as PadES are also able to be in a form of visible signatures or invisible signatures. Although we could even say that PDF Advanced Electronic Signatures could fall under the types of PDF signatures.

PDF Advanced Electronic Signatures have different parts to understand it named as Part1, Part2, Part3, Part4, Part5 and Part6 and all parts are the recommendation of ISO-32000 and ISO-32000-1 which is an International Organization for Standardizations. In the first part we can find the basic details about it and about its features, in second part we have the specifications of these signatures, in the third part the explicit policy regarding the electronic signature is defined, than in forth part the way of long term verifying and archiving of document is defined, in the fifth part the way is defined about how one can be able to sign some selected parts of a whole document and how these signatures are able to work for xml contents, at last in the sixth part all the procedure and working of electronic signature is defined in the form of visuals. To understand the working, ability, efficiency PadES and also to know about how we can apply these signatures to sign PDF online documents of one have to read and understand all the six parts of it.

Anna Stacy has in-depth knowledge and experience of PDF signatures. Her basic forte lies within process optimization and process re-engineering, and has a long-term obsession with Pades. She is a leading source of what's hot and what's not in the online digital signature space.

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Sunday, October 22, 2017

Collecting Signed Memorabilia

Collecting Signed Memorabilia
To share an interesting collection of autographed memorabilia with family and friends can be an entertaining and fun experience. Collecting signed memorabilia can appeal to all ages and collections can range include people from all throughout history up to present day celebrities. However, if you have not yet started your collection, but are perhaps deciding your first steps, then one of the first things you must consider is which autographs capture your interest?

Extensive research is not necessary; just an idea of your personal choices is enough. Remember that in most cases, you will only be able to enjoy it as a hobby if you are genuinely interested in it. There is a large and generally very involved autograph collecting community and they will always be prepared to help you and give you some valuable tips, especially if you are a keen beginner. Some research on the Internet will put you in touch with the various collector clubs and societies.

Online communications with fellow collectors can provide you with much information and may help prevent you making some costly errors. It could also save you a lot of time and effort. By example, they would advise you that Tiger Wood does not sign golf balls; so already you know it is not worth looking for one of those! Another aspect to this is that if you intend buying one for your collection, it will be well worth looking at the source very closely.

Talking to other collectors, will also provide you knowledge about which items are currently at the top of most collectors wish lists and an insight into which items are likely to be most sort-after in the future. Communicating with fellow collectors can also help you get to grips with the relative cost of articles. Unfortunately, many people in this large market try to take advantage of unwary newbie collectors. Knowledge about collecting signed memorabilia could be your greatest weapon against fraud in this competitive industry.

Signed memorabilia can come in a number of different forms. Most things can be considered memorabilia from menus to footballs and anything else that is possible to autograph. Popular sources of autographs are correspondence and it is a bonus to find items that are signed and contain historical information. Other commonly signed collectors' items include, cheques, contracts, any form of book or magazine, manuscripts and photographs. The list can be almost endless.

Should you intend buying signed memorabilia solely for your personal use, collectible resale values will not be of too much concern to you. However, you should not allow a seller to take advantage of you by inflating the price of an item. However, you should also be wary not to offer a price that is in excess of the generally accepted value. Do not allow any emotional attachment to an item cloud your business judgment.

The collection of signed memorabilia, should as a rule, come directly from recognised and established sources. If you purchase an article that has not been authenticated, then it is to all intents and purposes, worthless. As you gain experience and increase your knowledge, you will become more aware of how things work and establish yourself as a part of the collectors' world.

For a great collection of genuine signed memorabilia to add to your collection why not check out Genuine Memorabilia.

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