`EXHIBIT 2317
`CBM2013-00023 (APPLE INC. v. SIGHTSOUND TECHS., LLC)
`PAGE 000001
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`Operating System Security Enhancements
`SlE':‘l-lTSOUND.COM sells music (digital audio files) via the Internet in download fashion. Currently. s “cm key fits all" security architecture does not exist for
`lntemet users. Encryptionldecryption currently takes place at the application level (i.e. Win32 Appfization). and once the music is decrypted, an
`unencrypted audio signal is sent by the application (i.e. the audio player) to the OS for playback through the sound card.
`if a consumer of encrypted
`audio files experiences a hard disk failure and must reinstall their audio player software, requiring a new encryption key. the new audio player will not
`be able to decrypt and playback their old library of purchased audio files which were encrypted with the lost key, even if they have backed up those
`audio files.
`
`Microsoft has announced plans to include a Shared Public Key infrastructure (Shared PK!) in the upcoming Windows NT 5.0 and penn it application
`developers to take advantage of these new encryption features. SlGl-t'iBOUNEl.C.DM believes that it wou.d be to the benefit of both Microsoft and its
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`customers ifMicrosoft provided a downloadable update forWindows CE, Win 95, Win 98, and Wir NT4.0 (ifpossible) to provide the same Shared
`PK! functionality, and that they be compatible with the Mac OS. SiGl-lTSUUND.C'.DiVi also believes that it would be to the benefit of both Apple and its
`customers if Apple provided compatible Shared PKI functionality in their operating systems as weli
`siei-irsouNo.coivi believes that this "Shared Public
`Key" (Shared PK) will increase ease of use for the customer and increase on-line security for the atidiolvideo files.
`Additionally, Microsoft has announced plans to include a Encrypting File System (EFS) in the upcoming Windows NT5.0, which supports transparent
`encryption and decryption of files stored on a disk.
`sicHTsouivi:i.coM believes that it would be to the benefit of both Microsoft and its customers if
`Microsoft adds "merchant" functionality to the EFS and updates the Microsoft Commerce Server to provide an encrypted download link between a
`consumer's PC operated by Windows NT 5.0 and the merchant's Microsoft Commerce Server. An; file (i.e. WAV, AVI, MP4, EXE) could be sold and
`transmitted by the merchant's Microsoft Commerce Server, encrypted for lntemet transmission (i.e. 'iLS or SSL) using the customers Shared PK.
`decrypted by the customers NT 5.0 using the Shared PK. re-encrypted by the custom er‘s NT 5.0 using the updated EFS and using the custom er’s
`Shared PK, and saved to the custom er‘s NTFS disk in encrypted format. Playback or opening of any file sold in this manner is only possible if the OS
`detenriines that its Shared PK matches the Shared PK used to initially encrypt the file. Additionally, siei-nsouNo.co.-vi believes that it would be to the
`benefit of both Microsoft and its customers if Microsoft adds "transport" functionality to the EFS to enable the customer to pass along the EFS
`encrypted file without creating unauthorized duplicates. SlGH'l'SEll.lND.CCiM believes that it would be to the benefit of both Microsoft and its customers if
`Microsoft provided a downloadable update for Windows CE, Win 95, Win 98, and Win NT 4.0 (if possible) to provide the same EFS functionality, and
`that they be compatible with the Mac OS. Sil3i-l'|'5ClUND.CD\ii also believes that it would be to the beneit of both Apple and its customers if Apple provided
`compatible EFS functionality in their operating systems as weil. This would permit portability of EFS encrypted audioivideo files from one PC or Mac to
`another. including pcrtables running Windows CE.
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`PAGE 000002