1. A method for digital rights management (DRM) of encrypted digital content, the method comprising: in an electronic device: generating a first seed value from encrypted information in a vault file based on biometric information provided by a user, wherein said vault file corresponds to said user; computing an alpha-numeric array based on said generated first seed value and a rule, wherein based on said rule, re-generation of said first seed value is impossible from said computed alpha-numeric array; generating a set of intermediate values based on said computed alpha-numeric array; and determining a content key based on said generated set of intermediate values.