Patent ID: 8413254

Claim:
A content reproducing apparatus comprising: an acquisition unit that acquires a first cipher key with an expiration from a server; a reproduction unit that reproduces a content, using the first cipher key; and a determination unit that determines whether or not a plurality of contents can be continuously reproduced, using the first cipher key, when the reproduction unit continuously reproduces the plurality of contents, wherein when it is determined that the plurality of contents cannot be continuously reproduced using the first cipher key because the first cipher key will expire during the continuous reproduction of the plurality of contents, the acquisition unit newly acquires a second cipher key from the server prior to the start of the continuous reproduction, even if the first cipher key is not yet expired, and then the reproduction unit continuously reproduces the plurality of contents, using the second cipher key, and when it is determined that the plurality of contents can be continuously reproduced using the first cipher key, the acquisition unit does not acquire the second cipher key from the server, and the reproduction unit continuously reproduces the plurality of contents using the first cipher key.