1. A method for producing a fluorosilicone composition comprising the steps of:
(a) reacting a perfluoro alpha olefin with a substituted hydrogen di-halo-silane to produce a first reaction product;
(b) reacting said first reaction product with a primary or secondary amine to produce a second reaction product;
(c) reacting said second reaction product with a fluorine containing silanol terminated siloxane to produce a fluorosilicone composition said fluorosilicone composition comprising M, D and D\u2032 units having the formula:
MaDbD\u2032c
with:
M=R1R2R3SiO12,
where R1 and R2 are each independently selected from the group of C1 to C40 monovalent hydrocarbon radicals and R3 is selected from the group consisting of C1 to C40 monovalent hydrocarbon radicals, C2 to C40 monovalent alkenyl hydrocarbon radicals, hydrogen, hydroxyl, C3 to C16 fluorine substituted monovalent hydrocarbon radicals and R11R12N where R11 is selected from the group C1 to C10 monovalent hydrocarbon radicals and R12 is selected from the group C1 to C10 monovalent hydrocarbon radicals and hydrogen;
D=R4R5SiO22,
where R4 is selected from the group consisting of C1 to C40 monovalent hydrocarbon radicals, C2 to C40 monovalent alkenyl hydrocarbon radicals and C3 to C7 fluorine substituted monovalent hydrocarbon radicals and R5 is selected from the group of C3 to C7 fluorine substituted monovalent hydrocarbon radicals; and
D\u2032=R6R7SiO22,
where R6 is selected from the group consisting of C1 to C40 monovalent hydrocarbon radicals and C6 to C16 fluorine substituted monovalent hydrocarbon radicals and R7 is selected from the group of C6 to C16 fluorine substituted monovalent hydrocarbon radicals, where the subscripts a, b and c are non-zero and positive, a is at least 2 and c is at least 2.
2. The method of claim 1 wherein said fluorosilicone has a weight percent fluorine content in excess of about 37.5 weight percent.
3. The method of claim 1 wherein said fluorosilicone has a weight percent fluorine content in excess of about 45.0 weight percent.
4. The method of claim 1 wherein said fluorosilicone has a weight percent fluorine content in excess of about 50.0 weight percent.
5. The method of claim 1 where R4 is methyl.
6. The method of claim 1 where R5 is trifluoropropyl.
7. The method of claim 1 where R6 is methyl.
8. The method of claim 1 where R7 is (CnF2n+1)CH2CH2) with n ranging from 4 to 14.
9. The method of claim 8 where n is 8.
10. The method of claim 9 where R4 is methyl.
11. The method of claim 10 where R5 is trifluoropropyl.
12. The method of claim 11 where R6 is methyl.
13. The method of claim 12 wherein said fluorosilicone has a weight percent fluorine content in excess of about 37.5 weight percent.
14. The method of claim 12 wherein said fluorosilicone has a weight percent fluorine content in excess of about 45.0 weight percent.
15. The method of claim 12 wherein said fluorosilicone has a weight percent fluorine content in excess of about 50.0 weight percent.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An information playback device for playing back information recorded on a recording medium, said information playback device comprising:
cryptosystem means for executing decryption processing on data read from said recording medium; and
secret-information decoding means for reading secret information stored on said recording medium by executing a data-reading process, which is different from a process of reading content data stored on said recording medium, for generating one or more M-series signals and decoding the secret information using the M-series signals;
wherein said cryptosystem means generates a content-decryption key by using a hash function and, as a key-generating data, the secret information which is decoded after being read from said recording medium in accordance with either an analyzing data-recording key mode or a non-analyzing data-recording key mode, and executes, based on the generated content-decryption key, the decryption processing on the read data; and
wherein said cryptosystem means uses the read secret information to generate the content-decryption key, and the read secret information is allowed to be used only in the generation of the content-decryption key which is executed in said cryptosystem means, without being stored in a storage means which is readable from the outside of said information playback device.
2. An information playback device according to claim 1, wherein:
the secret information includes a type of data among a stamper ID which is stored on said recording medium when said recording medium is produced and which is common to a plurality of recording media, a disk ID which is unique to each of the recording media, a content ID which is differently set for each content, and a cryptosystem key; and
said secret-information decoding means executes a decoding process on the read data.
3. An information playback device according to claim 1, wherein:
said information playback device possesses node keys which are unique to nodes constituting a hierarchical tree structure having a plurality of different information playback devices as leaves;
said cryptosystem means generates the content-decryption key based on the read secret information and decryption-key-generating data which is stored in said information playback device; and
the decryption-key-generating data can be updated by using an enabling key block generated such that a node key is encrypted by using a key including at least one of a node key and a leaf key which are positioned at a lower level.
4. An information playback device according to claim 3, wherein the decryption-key-generating data is one of a master key common to a plurality of information playback devices and a media key unique to a specified recording medium.
5. An information playback device according to claim 3, wherein:
the decryption-key-generating data corresponds to a generation number as updating information; and
when storing encrypted data on said recording medium, said cryptosystem means stores on said recording medium the generation number of the decryption-key-generating data as a recording-mode generation number.
6. An information playback device according to claim 3, further comprising transport-stream processing means for adding an arrival time stamp to each of transport packets constituting a transport stream;
said cryptosystem means generates a block key as a decryption key for block data composed of at least one transport packet to which the arrival time stamp is added; and
in decryption of the data stored on said recording medium, said cryptosystem means generates a block key as a decryption key based on data including the secret information, the decryption-key-generating data, and a block seed as additional information which includes the arrival time stamp and which is unique to the block data.
7. An information playback device according to claim 1, wherein:
said secret-information decoding means is structured to execute decoding processing on data which is stored on said recording medium by using a binary sequence to disturb a string of bits constituting the secret information; and
said secret-information decoding means executes decoding processing of the secret information by generating the binary sequence and executing arithmetic processing using the generated binary sequence and a playback signal from said recording medium.
8. An information playback device according to claim 1, wherein said secret-information decoding means reads, from said recording medium, data which is recorded in a form converted in a predetermined manner from the secret information in units of a plurality of bits constituting the secret information, and executes decoding processing on the secret information by converting the read data again.
9. An information playback method for playing back information from a recording medium, said information playback method comprising:
a secret-information decoding step which reads secret information stored on said recording medium by executing a data-reading process, which is different from a process of reading content data stored on said recording medium, for generating one or more M-series signals and decoding the secret information using the M-series signals; and
a decryption step which generates a content-decryption key by using a hash function and, as a key-generating data, the secret information which is decoded after being read from said recording medium in said secret-information decoding step in accordance with either an analyzing data-recording key mode or a non-analyzing data-recording key mode, and executes, based on the generated content-decryption key, the decryption processing on the read data;
wherein said decryption step includes a step which uses the read secret information to generate the content-decryption key, and the read secret information is allowed to be used only in the generation of the content-decryption key which is executed in said cryptosystem means, without being stored in a storage means which is readable from the outside of said information playback device.
10. An information playback method according to claim 9, wherein:
the secret information includes a type of data among a stamper ID which is stored on said recording medium when said recording medium is produced and which is common to a plurality of recording media, a disk ID which is unique to each of the recording media, a content ID which is differently set for each content, and a cryptosystem key; and
said secret-information decoding step executes a decoding process on the read data.
11. An information playback method according to claim 9, wherein:
said decryption step includes a step which generates the content-decryption key based on the read secret information and decryption-key-generating data which is stored in said information playback device; and
the decryption-key-generating data can be updated by an enabling key block generated such that in a hierarchical tree structure having a plurality of different information playback devices as leaves, branches as nodes, and unique keys set for said leaves and said nodes, a node key is encrypted by using a key including at least one of a node key and a leaf key which are positioned at a lower level.
12. An information playback method according to claim 11, wherein the decryption-key-generating data is one of a master key common to a plurality of information playback devices and a media key unique to a specified recording medium.
13. An information playback method according to claim 11, wherein:
the decryption-key-generating data corresponds to a generation number as updating information; and
when storing encrypted data on said recording medium, said decryption step stores on said recording medium the generation number of the decryption-key-generating data as a recording-mode generation number.
14. An information playback method according to claim 11, further comprising a transport-stream processing step for adding an arrival time stamp to each of transport packets constituting a transport stream;
said decryption step includes a step which generates a block key as an decryption key for block data composed of at least one transport packet to which the arrival time stamp is added; and
in playback of the data stored on said recording medium, said decryption step generates a block key as a decryption key based on data including the secret information, the decryption-key-generating data, and a block seed as additional information which includes the arrival time stamp and which is unique to the block data.
15. An information playback method according to claim 9, wherein:
said secret-information decoding step includes a step which executes decoding processing on data which is stored on said recording medium by using a binary sequence to disturb a string of bits constituting the secret information; and
said secret-information decoding step executes decoding processing of the secret information by generating the binary sequence and executing arithmetic processing using the generated binary sequence and a playback signal from said recording medium.
16. An information playback method according to claim 9, wherein said secret-information decoding step reads, from said recording medium, data which is recorded in a form converted in a predetermined manner from the secret information in units of a plurality of bits constituting the secret information, and executes decoding processing on the secret information by converting the read data again.