"RC" značenje u engleski leksikon

Abbreviation for Red Cross; Roman Catholic.
1 Red Cross
2 resistance-capacitance
3 Roman Catholic

Množina: RC2s

A block cipher developed by Ron Rivest.
RC2 is a block cipher with variable key length that can
be used as a replacement for Data Encryption Standard
(DES) for encryption and decryption of information. It
is used particularly in software exported internationally
since RC2 is not subject to the same restrictions as DES
is for export control. RC2 employs a block size of 64
bits and adds a random “salt” to encryption keys to
reduce the possibility of certain types of cryptanalytic
attack. RC2 is several times faster than DES on comparable hardware and can be made more secure than DES by choosing a suitably long key.

Množina: RC4s

A stream cipher developed by Ron Rivest.
RC4 is a stream cipher with variable key length that uses an algorithm based on random permutations. RC4 performs encryption by generating a one-time pad and XORing it bitwise with the stream of plaintext to create a corresponding stream of ciphertext. The RC4 algorithm
was originally proprietary and belonged to RSA Security but was “outed” in 1994, which has allowed it to be extensively analyzed by the cryptanalytic community.
As a result, the cipher has been found to be secure as long as the initial portion of the one-time pad is discarded.
RC4 can also be used as a pseudorandom number
generator (PRNG) and is used for encrypting Hypertext Transfer Protocol (HTTP) traffic in Secure Sockets Layer (SSL) communications on the Internet.

Množina: RC5s

A fast block cipher developed by Ron Rivest.
RC5 is a block cipher that is parameterized to support the following:
. A variable key length from 0 to 2048 bits
. A variable block size from 32 to 128 bits
. A variable number of rounds from 0 to 255
RC5 uses key expansion to generate a key table that is then used for encrypting plaintext and decrypting the corresponding ciphertext. RC5 encryption employs a scheme of bitwise XOR, integer addition, and data-dependent rotation operations as part of its encryption process. The security of RC5 is somewhat weakened since a 64-bit RC5 key was cracked in 2002 using idle central-processing unit (CPU) cycles on 331,000 computers across the Internet, though 128-bit RC5 keys are currently viewed as impermeable to brute-force cracking.

Množina: RC6s

A fast block cipher developed by Ron Rivest with Ray Sidney and Yiqun Yin.
RC6 is a modified version of RC5 that includes the additional operations of integer multiplication and 32-bit working registers. RC6 was proposed as a candidate
for the Advanced Encryption Standard (AES), but Rijndael was the winning finalist for the competition.
RC6 is patented and owned by RSA Security.

Množina: RCA connectors

A connector used for attaching audio and video devices, such as stereo equipment or a composite video monitor, to a computer’s video adapter. See the illustration. See also composite video display. Compare phono connector.

Množina: RCA Mark II synthesizers

Pioneer digitally programmable analog synthesizer developed 1959 by Harry Olsen and Herbert Belar. It was installed in the joint Columbia-Princeton electronic studio under the direction of US composers Otto Luening and Milton Babbitt, its best-known advocate. It was the first integrated device for preprogrammed synthesis and mixing of electronic and concrete sound materials, employing a punched card control system.

Royal Canadian Air Force

Royal Canadian Mounted Police

Royal Canadian Navy