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Whilst browsing though /dev_hdd0/game/BLUS30591/USRDIR in search of the dlc once again was reminded of this file.. dlc1.edat

(contains the DRM's for retail pkgs.)
Is there any known method of decrypting the file in order to change the pkg license or PSiD security checks?
Here in the encrypted .edat file:
NPD**UP0002-BLUS30591_00-CODBLACKOPSDLCZ1*K*ì»'fW0*ı*`y÷JE¶¯jp1MQø‘‡Z∆rqfiÖÆVù*Å¿“«ÚV*<@8≤Mπ«G{óÿ¯BŸE*Ù*`q“*'}LÊ £H€À∑*6ãÆèR1+*_-L*©H*®˜J&fleOÂLÍ∑y‡‹*{'ør¥§´›¯* ≥°ô*∞ˆŒ*Éæn|áÃsù NZ*U‹|«ª\⁄©¯*QjõéF∏~‚F*∑**∫íZÕfióC°√Hy

Ûͺ*—7*˘*Ü_xaßüì˚ãssSøè*ºû ∆dÛ
\è⁄`[π*F ˆ’*oXlgÁ%I›*»*™CºH3˙Ó蟌1aÑ¥ÿ`üÿª_î\ÖEDATA 3.3.0.W