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How to Use KF-Cipher PDF Encryption-Protection

1- Select Your PDF File With Maximum Size 20 Mega Byte

2- You Can Select Copy Protection or Print Protection or Both

3- Enter the Password if You Select Add Password Option and Then Press Encrypt

PDF Content Security

With the widespread use of PDF files, it has become important to protect the content of your PDF files, especially those that contain important business data or scientific content such as your important scientific lectures or research, as well as presentations of your products.

with KF-Cipher PDF File Encryption-Protection online Service. you have three PDF Protection Options .Protect Your PDF File with Password Protection, Protect Your PDF File Content by Prevent Copying any data from your file. and finally Protect your PDF file Content by Prevent Print any file Content.

KF-Cipher PDF File Encryption-Protection Service Use AES Encryption Algorithm with 128 Secret Key Length

Strong Password Containing Numbers,Upper Cases,LowerCase and Symbols with Minimum 12 Length

PDF files are widely used for sharing important documents over the internet. However, the sensitive information contained in these files can be vulnerable to unauthorized access and theft. This is why it is important to protect PDF files with encryption and cryptography algorithms.

Encryption is the process of converting plaintext into ciphertext, which can only be deciphered with a secret key. Cryptography algorithms are used to perform encryption and decryption of data. There are several cryptography algorithms available, each with its own unique features and level of security.

PDF files can be encrypted using various cryptography algorithms such as RSA, AES, and Blowfish. Let's take a closer look at each of these algorithms.

1-RSA (Rivest-Shamir-Adleman)

RSA is one of the most widely used cryptography algorithms for PDF file encryption. It is a public-key algorithm that uses two keys, a public key for encryption and a private key for decryption. The public key can be shared with anyone, while the private key should be kept secret. RSA is known for its strong security features, making it an ideal choice for encryption of sensitive data.

2-AES (Advanced Encryption Standard)

AES is a symmetric-key cryptography algorithm that uses the same key for both encryption and decryption. It is widely used for PDF file encryption due to its high level of security and efficiency. AES is available in different key lengths, and the longer the key, the more secure the encryption.


Blowfish is another symmetric-key cryptography algorithm that is widely used for PDF file encryption. It is known for its high security and fast encryption speed. Blowfish uses variable-length keys, making it difficult for unauthorized users to guess the key.

In addition to encryption, there are other methods to protect PDF files, such as password protection and digital signatures. Password protection involves setting a password for the PDF file, which must be entered to open and view the file. Digital signatures are used to verify the authenticity and integrity of the PDF file.

In conclusion, PDF file encryption and protection are crucial for ensuring the security and confidentiality of sensitive information. Cryptography algorithms such as RSA, AES, and Blowfish can be used to encrypt PDF files, and password protection and digital signatures can also be used for additional security. It is important to choose the appropriate encryption method based on the level of security required for the PDF file.

For More Information About AES,CBC,Hashing,PBE

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