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A 4 years 4 months ago #14818

AABBDD Topic Author Offline New Member Posts: 11 Thank you received: 0	H
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AES Encryption 4 years 4 months ago #14819

radaee
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Moderator
Posts: 1123
Thank you received: 73

Dear user:
PDFAESStream can only open the file that encrypted by PDFAESStream itself. it encrypt each 4096 as block, so support fast random access.

PDFAESStream to create AES encrypted file:

PDFAESStream stream = new PDFAESStream;
stream.Open("file path", key);
stream.Write(pdf_data_from_not_encrypted_whole_file);
stream.Close();

PDFAESStream to open PDF file:

PDFAESStream stream = new PDFAESStream;
stream.Open("file path", key);
Document doc = new Document;
doc.OpenStream(stream);
//do something...
doc.Close();
stream.Close();

PDFAESStream is not standard encrypt method for PDF file.
PDFAESStream just process PDF file as binary data.

the standard encrypt for PDF file is to invoke Document.EncryptAs();
Document.EncryptAs can generate password protected PDF file.

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Last edit: by radaee.

A 4 years 4 months ago #14821

AABBDD Topic Author Offline New Member Posts: 11 Thank you received: 0	s
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AES Encryption 4 years 4 months ago #14822

radaee Offline Moderator Posts: 1123 Thank you received: 73	EncryptAs shall not change page content. can you attach both origin PDF file and encrypted PDF file? The following user(s) said Thank You: AABBDD
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AES Encryption 4 years 4 months ago #14823

radaee Offline Moderator Posts: 1123 Thank you received: 73	one more thing: do not forgot to update to last version, which we fixed AES decryption few days ago. you shall only need replace nativer libraries, java code no effect on your issue. The following user(s) said Thank You: AABBDD
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A 4 years 4 months ago #14824

AABBDD Topic Author Offline New Member Posts: 11 Thank you received: 0	j
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