Key Establishment Sample Clauses
The Key Establishment clause defines the procedures and requirements for generating, exchanging, and managing cryptographic keys between parties in a secure communication or data protection context. Typically, this clause outlines the approved methods for key generation, the protocols for securely exchanging keys (such as using public key infrastructure or secure key exchange algorithms), and the responsibilities of each party in maintaining key confidentiality. Its core practical function is to ensure that all cryptographic operations are based on securely established keys, thereby protecting sensitive information from unauthorized access and mitigating the risk of data breaches.
Key Establishment. ▇▇▇▇▇ computes zi,j ← KE(gp, pBi, sAj) for every pair 1 ≤ i, j ≤ k, then computes
Key Establishment. For each 1 ≤ i, j ≤ k, ▇▇▇▇▇ computes zi,j = j(EBj/⟨Uj + [αi]Vj⟩), and then she calculates the hash h = H(z1,1, . . . , z1,k, z2,1, . . . , z2,k, . . . , ▇▇,▇, . . . , ▇▇,▇). Similarly, for each 1 ≤ i, j ≤ k, ▇▇▇ computes zi′,j = j(EAi/⟨Ri + [βj]Si⟩), and calculates the hash h′ = H(z1′ ,1, . . . , z1′ ,k, z2′ ,1, . . . , z2′ ,k, . . . , zk′ ,1, . . . , zk′ ,k).
Key Establishment. ▇▇▇▇▇ computes KE(gp, pB, sA) and Bob computes KE(gp, pA, sB).
Key Establishment. Key establishment may be broadly divided into key transport and key agreement. A key transport protocol or mechanism is a key establishment technique where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s). A key agreement protocol or mechanism is a key establishment technique in which a shared secret is derived by two (or more) parties as a function of information contributed by, or associated with, each of these, (ideally) such that no party can predetermine the resulting value. Thus in scenarios, where there is no central authority and the task of key generation cannot be assigned to a single (or few) participant(s)(as is most often the case in ad hoc networks), key agreement is a good alternative to key transport. But more often in a key agreement protocol, it is required that a participating member be assured that no other party aside from a specially identified party (or parties) may gain access to a particular secret key. Such a protocol is known as an authenticated key agreement protocol. It is worth noting here that the term authentication, in this context, means to have the knowledge of the identity of parties who may gain access to the key. To corroborate the fact that the same identities actually participated in the protocol, one has to rely on other mechanisms like entity authentication. Key agreement protocols can be designed using symmetric or asymmetric techniques. To further illustrate the above concepts present the two- party ▇▇▇▇▇▇-▇▇▇▇▇▇▇ key agreement protocol.
2.2.4.1 The ▇▇▇▇▇▇-▇▇▇▇▇▇▇ Key Agreement Developed by ▇▇▇▇▇▇ and ▇▇▇▇▇▇▇, this algorithm allows the establishment of a cryptographic secret key between two entities by means of data exchange through an insecure communication channel. The algorithm executed between two entities A and B is defined as follows:
1) A and B agree on two randomly chosen numbers p and g, so that p is a large prime number and g < p;
2) A chooses a secret random number SA and B chooses a secret random number SB;
3) A computes a public value TA = gSA mod p and B computes a public value TB = gSB mod p;
4) A sends TA to B and B sends TB to A;
5) A computes TBSA mod p = (gSB)SA mod p and B computes TASB mod p = (gSA)SB mod p. Since (gSA)SB mod p = (gSB)SA mod p = K, these two entities share a secret cryptographic key K. In other works, two entities are able to exchange information through a channel that anyone can listen to and at the end of the process the two e...
Key Establishment. At this stage, the participants 4 Security Analysis