subject: A Comprehensive Understanding Of Pdf Encryption And Password Protection [print this page] Portable Document Format is an advanced computer application widely used by the people across the globe. This Word to Pdf file format arms a user with a feature to protect the contents of a document. A user can encrypt a PDF file and select various security settings to keep the contents of a document intact. On the Internet there is a wide spectrum of knowledge available for the computer users. You can provide extensive information on the Internet. However, users also feel the need to protect their information. If you are using a PDF format you can protect the information. For this purpose, a person should have clear understanding of the password protection and encryption of a PDF file.
How to encrypt the PDF files?
A user should ensure to deploy a password on a PDF application to encrypt the document. If you do not use a password then anyone can have access to your PDF document. It also means that a PDF file has not been encrypted. It is easy to exercise control over a PDF document by restricting a user from viewing or printing. You can also prevent a document from being edited or altered by any other user. A person can use a password to achieve this purpose. This password forms an encryption key that encrypts PDF files. The encryption scrambles the data while forming an encryption key. The scrambling of the encryption is done by using a complicated mathematical algorithm. The scrambling process is carried in such a way so that one can unscramble again. A vital point is that any two encryption keys will never scramble the data in a same manner. A PDF encryption is of two types, 40 bits and 128 bits encryption. The 40 bits encryption is less safe as one can use various methods to crack the encryption keys. The 128 bits encryption is more secure as in this case the bits multiply the quantity of possible combinations for the encryption key. In other words, the bits increase the number of possible combinations.
How to use Passwords?
There are two types of passwords that a user can apply to a PDF file. An owner password and user password are the two passwords that can protect your file. An owner password enables an authorized user to read, print, copy or select the documents. In case of user password an author can apply restrictions to control his document. One can set the security features as per the requirement.
