如何打开密码保护了或加了密Adobe PDF文件

为安全原因,用户喜欢加密特别是他们的PDF文件机要数据。 他们将设置允许要求或增加密码制约用户’活动例如禁止打印等等。 然而,有时由于某些原因或特殊的情形,我们法律上被授权崩裂密码被保护的或被加密的PDF文件。 例如,您的上司要求您打印有些文件,但本文受留下组织的一个前同事的保护。 在这个情况之下,您没有选择,但发现解答打开或崩裂被加密的PDF文件。

在多数PDF加密工具或应用,用户通常允许运用密码的二个类型: 所有者密码和用户密码。 以所有者密码,用户将有全部存取对PDF文件,不用任何制约。 如果给了他们一个用户密码,用户将是受控或限于在某些行动例如只观看,但没有打印。

要打开密码保护了PDF文件,您可能使用密码解密工具试验一种更加商业的解答。 有您能实际上尝试的二种应用: -

先进的PDF密码补救

从ElcomSoft的先进的PDF密码补救是节目对有“所有者密码”或用户密码的解密密码被保护的和被制约的Adobe Acrobat PDF文件。 这软件使用方法象强力、帆柱、关键字检索和字典攻击猜测密码和取消保护。 它将设法所有可能的字符组合解码文件。 然而,过程也许长和耗时。 如果您想要有一感觉关于怎样这软件运作,您能通过链接实际上下载试验版本 这里. 当然,许多作用在试验版本失去了能力。

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PDF密码去膜剂

您能尝试的另一软件是PDF密码去膜剂由VeryPDF。 这软件可以用于解码被保护的Adobe Acrobat PDF文件,有“被设置的所有者”密码,防止文件编辑(改变),打印,选择文本和图表(和复制他们入剪贴板),或者增加或者改变的注释和形式领域。 解密立即完成。 被解码的文件在所有PDF观察者可以被打开(即。 Adobe Acrobat Reader)没有任何制约-即。 与编辑或复制或者打印使能的作用。 (包括7.x,以128位加密为特色)支持Adobe Acrobat的所有版本。 然而,有一个局限在这软件。 它不与有“用户密码”的文件一起使用。 You can also download the trial version of PDF Password Remover for testing.

IMPORTANT: This is a machine translated page which is provided "as is" without warranty. Machine translation may be difficult to understand. Please refer to original English article whenever possible.

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3 Responses to “How to Open Password Protected or Encrypted Adobe PDF Files”

  1. Free PDF Password Recovery for Windows
    December 30th, 2007 03:11
    1

    [...] Tags: adobe pdf, pdf, pdf password, windows software 29Dec I was inspired by the post at Digital Inspiration which was entitled How to Open Password Protected or Encrypted Adobe PDF [...]

  2. smto
    December 30th, 2007 06:28
    2

    And the pdf files with DRM protection? The protected files were opened in a pc that now I don’t have access, exists some possibility? I tried with xpdf in linux however dind’t work. I think that the xpdf only open the files until version 1.5 and these files are 1.6.

  3. Recover PDF Password with PDFCrack Free Recovery Crack Tool » My Digital Life
    January 7th, 2008 18:03
    3

    [...] PDF files, if you lost or forget the password required to open the document. There are plenty of commercial PDF password recovery software available which must be purchased with cold hard cash to unlock or crack a password locked PDF document. You [...]

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