How to implement the file (PDF, etc.) of word and execl, encryption and decryption, I use the DELPHI6,

CodePudding user response:

How to quote wcrypt2 for encryption and decryption operation?
Encrypt_File (ed_sourcefile. Text, ed_destfile. Text, ss);//encrypted file
Don't Encrypt_File function reference,

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A unit of AES encryption algorithm, file stream encryption to decrypt

CodePudding user response:

Three of the following:
It is through third-party encryption controls, the file is encrypted,
The second is from the characters in the file, from already have a algorithm, this shows the character, is a sealed book,
Third, encryption software, add a shell to file,

CodePudding user response:

There is also a big data also can't break your code method:
Additional password ZIP

Advantages, save a space, by the way, the data security
Shortcomings, will generate temporary files, the need for file deletion and file compression and decompression operations,

Tip: many encryption algorithm for Chinese often out garbled,

CodePudding user response:

Can use Office to provide encryption, more insurance, encryption, good idea, is the document flow, to carry on the encryption and decryption,

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Common practice is to decrypt the encrypted file flow, this kind of method, many on the net