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RC4 <Rivest's Cipher 4>
Reading: Earl sea four
Full spelling: Ron's Code 4
Field:
Security > code/hash > RC4 |
The secret key encryption which was developed by Ron Rivest. Encoding is done at 1 bit unit. Length of the key can be set is optionally. In addition, it is high speed by comparison with DES. The RSA Security corporation has kept detailed specification, it is not released at present. It is the encryption which is utilized well e.g., with SSL it is used in encoding the text. Furthermore, also the encryption, RC3 before RC4 was researched, but because efficient decipherment expedient is discovered before the completing, it has not reached to utility.
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RC5 <Rivest's Cipher 5>
Reading: Earl sea five
Full spelling: Ron's Code 5
Field:
Security > code/hash > RC5
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The secret key encryption which was developed by Ron Rivest. At the time of the succession of RC2,
Originally, because it is encryption for research, we have become very simple mounting, also detailed specification is open. Because of this, being possible to utilize even with the computer whose calculation ability is not high it is widely used very.
In addition, the distributed computing project, where the code-breaking contest is held by the RSA Security corporation, distributed.net half year or more making several tens of thousands of computers work, also the fact that it has become topic by the fact that finally it succeeds in decipherment is RC5.
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RC6 <Rivest's Cipher 6>
Reading: Earl sea six
Full spelling: Ron's Code 6
Field:
Security > code/hash > RC6
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The secret key encryption which was developed by Ron Rivest. The same person developed in the past the system which undertakes the succession With the system of designating commercial business utilization as prerequisite, the weak point which was pointed out with RC5 is reinforced. The next generation encoding standard which is selected the American Department of Commerce standard technical bureau (NIST) by (AES) it was one of last candidacy, but after all, adoption was not done. |
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RCA <Route certification bureau>
Alias:
Route CA, root certificate authority and root CA
Field:
Security > electronic signature > RCA |
The certification bureau which at one of types of certification bureau of digital certificate, does not receive the certification with superior certification bureau, prove your own justifiability personally. The certificate which certifies the self is called the route certificate.
RCA issues the digital certificate vis-a-vis other certification bureau, becomes the foundation of the reliance for certification bureau. Reliability of the route certificate, thing and the certification business operational regulation which receive harsh audit (CPS) thing and the operational result and the degree of distinction are released etc which, is shown with method other than the digital certificate. Certification bureau other than RCA is called from superior certification bureau by the fact that such as RCA it has issuing the digital certificate, proves the justifiability of the self. The fact that it is categorized to the apex of the chain of this reliance is RCA.
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RCA terminal <Composite terminal>
Alias:
composite connector
Field:
Multimedia > home appliance /AV equipment > RCA terminal |
| The input/output terminal of the pin type which most image acoustic equipment have. The luminance signal (Y) with synthesizing the color difference signal (C), it forwards, separates this on receiving end and in order to indicate, the signal changes with process of separation, picture quality is easy to deteriorate. Almost, but as for being able to connect with any equipment strength, if it can utilize the Switch terminal and the component terminal and the D terminal, the method which utilizes there is better. |
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