ECC is ECC is a way to achieve . ECC can also be interpreted as The problems fall into three categories based on elliptic curve cryptography elliptic curve cryptography source of status of other ECC ECC Emergency Cardiovascular Care Emergency Cardiovascular Care (emergency cardiac care, ECC) 20 century and 90 years, recovery experts are aware of the scope of ECC and CPR guidelines need to continue to expand, as the AHA, the International Federation of resuscitation (ILCOR) has admitted that the pulse can not reach cardiac arrest patients, the treatment of conditions not conducive to the timely save lives too. Ambulance personnel in public places and clinicians facing imminent cardiac arrest patients, to take measures to correctly handle, so that it can stabilize the disease, or even avoid the occurrence of cardiac arrest. Collecting Medical Education Network parity with the main function of memory ECC technology to understand, without mentioning Parity (parity). Before the advent of the ECC technology, the most widely used memory is another technology that Parity (parity). We know that in digital circuits, the smallest unit of data is called data high, low-level signals. In the digital circuits of 8 consecutive bits is a byte (byte), in memory without the would make one change in the corresponding data stored in a result of the application error. And with the For example, a byte of a stored value (1,
Chi dazzle flat iron,0,1,0,1,0,1,1), put together for each phase (1 +0 +1 +0 +1 +0 +1 +1 = 5). If the result is odd, for even parity, the parity bit is defined as 1 or 0 otherwise; for odd parity, and vice versa. When the CPU reads the stored data back, it will once again before adding the data stored in 8 bits, the results are consistent with the verification phase. When the CPU is not the same time that the two will try to correct these errors. But the lack of Parity is this: When a data bit memory errors found when they are not necessarily able to determine a position in which, it may not be able to correct problems, so the parity with the main function of memory is just ECC came into being through the above analysis we know that by Parity memory is based on the original data bit to add a data bit to check the correctness of the current 8-bit data, but with the increase of data bits Parity bits are used to test the data multiplied, that is when the data bits to 16 bits when it is necessary to increase 2 to check, when the data bit is 32 bit you need to increase the four, and so on. Especially when very large amounts of data, the data the greater the chance of error, for only a simple error correction method of parity becomes powerless, is based on a situation, a new memory technology to be shipped and students, this is the ECC (error checking and correction), this technology is also on the original data bits plus parity bit to achieve. The difference is not the same between the two methods increases, which also leads to the main function of the two are not the same. Parity is it different if the data bits is 8 bits, you need to increase the five to be ECC error checking and correction, data bits for each doubling, ECC only one additional parity bit, which means that when the data bits to 16 bits 6 when the ECC bits,
chi pink dazzle hair straightener, 32 bits ECC bits to 7 bits, data bits to 64 bits for the 8-bit ECC bits, and so on, each doubling of the data bits, ECC bits increase of only one. In short,
chi pink dazzle, to allow the ECC memory errors, and errors can be corrected, allowing the system to continue normal operations, will not be interrupted due to an error, and the ECC with Parity more advanced than the automatic identification, the ability to correct, you can not check Parity and found out the error-bit error correction. ECC (Elliptic Curve Cryptosystems) ECC problem according to three categories based on their 2002, the U.S. company to develop SUN elliptical encryption technology donated to open source projects based on public key cryptosystem based on the problems they are generally divided into three categories: large integer factoring problem class, class of discrete logarithm problem, elliptic curve class. Sometimes classified as the class of the elliptic curve discrete logarithm class. Elliptic curve cryptography elliptic curve cryptography source from the study of elliptic curves, elliptic curve refers to the so-called by the Weierstrass (Weierstrass) equation: y2 + a1xy + a3y = x3 + a2x2 + a4x + a6 (1 ) identified the plane curve. Where the coefficients ai (I = 1,2, ..., 6) defined in a domain can be a rational number field, real number field, complex field, but also can be a finite field GF (pr), elliptic curve cryptography used in the elliptic curves are defined in a limited domain. All points on the elliptic curve is called the infinity plus a special point of the set of operations with the addition of a definition of Abel form a group. In the equation mP = P + P + ... + P = Q (2), the known points P m and Q relatively easy to find points, whereas the known point Q and point P m is quite difficult to find, this problem is called point groups on elliptic curve discrete logarithm problem. Elliptic Curve Cryptography is the use of the design came to this difficult problem. Applied to elliptic curve cryptography by Neal Koblitz on the first and Victor Miller independently proposed in 1985's. ECC is currently known public key system in each of the highest bit encryption strength provided by a system. Solution of elliptic curve discrete logarithm problem on the best algorithm Pollard rho method, the time complexity is entirely index-order. Where n is the equation (2) m-digit binary representation. When n = 234, about 2117, need to 1.6x1023 MIPS years. And we know the use of RSA is the difficulty of factoring large integers, at present under normal circumstances for the best factoring algorithm time complexity is sub-index of order, when n = 2048, the need to 2x1020MIPS years. That is, when using 2048-bit RSA key when, ECC key obtained using the 234 has much higher security strength. They are the difference between the key length up to 9 times greater when the ECC key would be greater when the gap between them. More ECC key advantage of the short is very obvious, with the encryption strength increase, little change in the key length. Germany, Japan, France, the United States, Canada and other countries, many cryptographic research group and some companies implement elliptic curve cryptography, password and scholars in China also has some work to do in this area. Many standardization organizations have or are developing standards on the elliptic curve, while there are many manufacturers have or are developing products based on elliptic curves. For elliptic curve cryptography research is in the ascendant, opened from the ASIACRYPTO'98 ECC on the part specifically evident. Status of elliptic curve cryptography elliptic curve cryptography in the standardization, IEEE, ANSI, ISO, IETF, ATM and so a lot of work, they developed a standard document elliptic curves: IEEE P1363 P1363a, ANSI X9.62 X9.63,
cheap chi straighteners, ISO/IEC14888 and so on. May 12, 2003 China issued national standards for wireless local area network GB15629.11, contains a new WAPI (WLAN Authentication and Privacy Infrastructure) security mechanism for the user's WLAN system provides comprehensive security protection. This security mechanism consists of two parts WAI and WPI, respectively, to achieve the identity of the user identification and the transmission of data encryption. WAI using public key cryptography, the use of certificates to the users on the WLAN system and the AP for authentication. Certificate which contains the certificate issuer (ASU) and the signature and public key certificate holder's public key and signature,
CHI Pink Dazzle Flat Iron, the signature here is the elliptic curve using ECC algorithm. Canada Certicom Company is the world's most famous ECC cryptography company, has authorized more than 300 enterprises use the ECC cryptography, including Cisco Systems, Inc., Motorola, Palm and other enterprises. Certicom's VPN Microsoft will embed Microsoft Windows Mobile 2003 system. Other ECC: engine control center motor control centers, mainly used in civil aviation ECC: ERP Central Componet, a core component of enterprise resource planning (SAP reference resources tutorial) ECC: Embedded Control Channel Embedded Control Channel ECC SDH network is the transfer operation, management and maintenance (OAMP) logical channel information. It SDH data communications channel (DCC) as its physical path. SDH ECC OSI reference model protocol stack is based on the agreement with the current design of object-oriented management system is consistent. ECC protocol stack application layer contains the Common Management Information Service Unit (CMISE), also includes support for remote operation of the service modules CMICE (ROSE) and the association control service element (ACSE). Presentation layer, session layer and transport layer ROSE and ACSE supports connection-oriented service required. Which transport layer protocol also includes additional modules, making no connection by the network layer protocol (CLNP) operation to provide connection mode service. Data link layer using Q.920 and Q.921 provided in the link access procedure D channel (LAPD), the physical channel using SDH DCC. Atlas Atlas entry for more extended reading: 1
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