Systems and techniques to enable secure and efficient recovery of encrypted content may include accessing a public key of a user and another user and encrypting data using the public keys. The another user may be the user's manager. Systems and techniques may include generating a session key, encrypting data using the session key, and encrypting the session key using the public keys of at least two users. A data structure such as a directory may be accessed to obtain information such as one or more public keys.

 
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> Information providing apparatus and method, information processing apparatus and method, and program storage medium

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