Acrobat Acrobat「デジタル署名」と「証明」の違い
Acrobatで「証明書を使用」の時、「デジタル署名」、「証明（可視署名）」、「証明（不可視署名）」が選択できる。「デジタル署名」は無料版のAcrobat Readerでも可能だが、「証明（可視署名）」、「証明（不可視署名）」は有料版のAc...
Acrobat
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Acrobat 
Acrobat Adobe Acrobat Reader にタイムスタンプを付与する方法
How to add a timestamp to Adobe Acrobat Reader.
Acrobat Adobe Acrobat Readerで電子署名
Digital signatures in Adobe Acrobat Reader.
Acrobat Adobe Acrobat Readerで手書き署名
Handwritten signature in Adobe Acrobat Reader.
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