Patent Document ID: 7870386
Application ID: 10835502

Base Claim:
1. A method for selective decryption within an encrypted document, said method comprising: detecting an encrypted portion of a document, said encrypted portion having been selected and marked for decryption, said encrypted portion being an encryption of a text portion of the document, said text portion comprising a known character string that had been added to the text portion prior to the text portion being encrypted; receiving a selection of a valid key configured to decrypt the encrypted portion; ascertaining that an attempt to convert the encrypted portion into a decrypted portion of the document by decrypting the encrypted portion using the valid key was successful, said ascertaining comprising determining that the decrypted portion includes the known character string; in response to said ascertaining, removing the known character string from the decrypted portion; and after said removing the known character string, displaying the encrypted portion.

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Claim 6:
6. The method of claim 1 , wherein said receiving the selection of a valid key comprises: presenting to a user an identification of a plurality of keys previously entered to open a corresponding plurality of documents; and receiving from the user the selection of the valid key from the plurality of keys.