1)   Encrypt PDF (Secure PDF) 2.3
Encrypt PDF software allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs.
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 2)   PDF Encrypt COM/SDK 2.3
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs, set permissions, add user and owner password.
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 3)   Encrypt & Decrypt PDF 1.00
Encrypt & Decrypt PDF allows you to Encrypt and Decrypt protected Adobe Acrobat PDF files in batch mode. With this software, you may freely secure your PDF files from being printed, changed, copied, extracted, signed of your PDF files.
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 4)   PDF Password Recovery and PDF Password Remover COM SDK 2.2
The PDF Password Remover COM can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password set.
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 5)   PDF Encrypt COM/SDK Unlimited License 2.3
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs, set permissions, add user and owner password.
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 6)   Lizard Safeguard PDF Security 2.6
PDF document security software with DRM controls. Control who can view PDF documents & how they are used. Prevent copying, sharing, modifying, screen grabbing. Control the number of views and prints & when documents expire. No useless passwords.
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 7)   Encrypt PDF Command Line 2.3
Encrypt PDF software allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs.
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 8)   ap PDF Encrypt 2.3
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs, set permissions, add user and owner password.
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 9)   PDF Password Cracker Ent 3.0
PDF Password Cracker can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password and "user" password set. It has Key search attack, which guarantees the decryption of PDF files that use 40-bit encryption.
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 10)   Encrypt PDF SDK-COM Component 2.1
Encrypt PDF SDK-COM allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs.
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