RECORDING MEDIUM, CONTENTS REPRODUCING DEVICE AND CONTENTS REPRODUCING METHOD

To provide a recording medium on which whole piece of decryption information that is required to be highly secure is recorded while being kept secure even when it is larger in data size than the storage capacity of an area originally intended for recording it. It is a recording medium in which encrypted content that has been encrypted and decryption information for the decryption of the encrypted content are recorded in two areas of different security levels. Decryption information B which is a portion of the decryption information is recorded in an area L of a relatively higher security level. The encrypted content and decryption information C which is the remainder of the decryption information that has been encrypted are recorded in an area D of a relatively lower security level. The decryption information B recorded in the area L includes information indicating the location where the decryption information C is recorded and information for the decryption of the remainder.