Recording medium having encrypted sound data recorded therein and information processor
View Patent ↗Digital sound data is encrypted and recorded in a recording medium 200 . Information 212 required for decoding the encrypted digital sound data 220 is recorded in a program 211 for controlling the reproduction of sound data separately from the digital sound data 220 . This can prevent PCM sound data recorded in the recording medium as a part of a content, from being reproduced separately from the content.
1. A recording medium readable by an information processor, having at least digital sound data and a program for controlling the reproduction of the digital sound data separately recorded therein, wherein:
the digital sound data is encrypted; and
a decrypting method and key information for decrypting the encrypted digital sound data are recorded in the program for controlling the reproduction of the digital sound data.
2. A recording medium readable by an information processor, comprising:
an area where encrypted digital sound data is recorded; and
an area where a program for controlling operation of the information processor is recorded; wherein
a decrypting method and key information for decrypting the encrypted digital sound data are recorded in the program for controlling the reproduction of the digital sound data.
3. A recording medium readable by an information processor, comprising:
an area where encrypted digital sound data is recorded; and
an area where a program for controlling operation of the information processor is recorded;
wherein a decrypting method and key information for decrypting the encrypted digital sound data are recorded in the program for controlling the reproduction of the digital sound data; and
wherein the area where encrypted digital sound data are recorded records a plurality of digital sound data encrypted by a plurality of encrypting methods, and a plurality of decrypting methods and key information are recorded for the plurality of recorded digital sound data.
4. A recording medium readable by an information processor, comprising:
an area where encrypted digital sound data is recorded; and
an area where a program for controlling operation of the information processor is recorded;
wherein a decrypting method and key information for decrypting the encrypted digital sound data are recorded in the program for controlling the reproduction of the digital sound data; and
wherein the encrypted digital sound data are recorded by a plurality of digital sound data encrypted by a plurality of encrypting methods, and a plurality of decrypting methods and the key information are recorded for the plurality of recorded digital sound data.