Definitions

1. Diffie-Hellman is a commonly used public-key algorithm for key exchange. (Web site)
2. Diffie-Hellman is a key agreement algorithm used by two parties to agree on a shared secret. (Web site)
3. Diffie-Hellman is a public-key cryptography protocol that allows two parties to establish a shared secret over an unsecured communications channel.
4. Diffie-Hellman is an encryption algorithm that employs the asymmetric key model. (Web site)
5. Diffie-Hellman is a component of Oakley key exchange. (Web site)

Ipsec Standard

1. If that VPN is operating on the IPSec standard, then Diffie-Hellman is certainly in use. (Web site)

Man-In-The-Middle Attack

1. Attacks against Diffie-Hellman include also the man-in-the-middle attack.

First Generation Public Key Systems

1. Elliptic curve cryptosystems also are more computationally efficient than the first generation public key systems, RSA and Diffie-Hellman. (Web site)

Diffie-Hellman Method

1. VPNs operating on the IPSec standard use the Diffie-Hellman method for key management.
2. The Diffie-Hellman Method For Key Agreement allows two hosts to create and share a secret key.

Ike Protocol

1. Diffie-Hellman is used by the IKE protocol.
2. The discrete log problem is the basis of several cryptographic systems, including the Diffie-Hellman key exchange used in the IKE protocol. (Web site)

Blum-Blum-Shub

1. RSA public key, AES secret key encryption, SHA-512 hash function, PRNG: Blum-Blum-Shub and RSA, Diffie-Hellman, file shredding, compression and more. (Web site)

Diffie-Hellman Key Exchange Protocol

1. IPSEC uses the Diffie-Hellman key exchange protocol to create keys. (Web site)

Perfect Forward Secrecy

1. See also Diffie-Hellman key exchange is a cryptographic protocol that provides perfect forward secrecy.
2. I also do not agree with your conclusion that perfect forward secrecy implies a requirement for Diffie-Hellman.

Diffie-Hellman Algorithm

1. For all practical purposes, the literature defines "perfect forward secrecy" by stating the Diffie-Hellman algorithm. (Web site)
2. The Diffie-Hellman algorithm is in use today for key exchange between computers.

Section

1. More detail about Diffie-Hellman can be found below in Section 5.2. (Web site)

Generation

1. The CryptoAPI algorithm identifier for the Diffie-Hellman key-exchange algorithm when used for the generation of ephemeral keys. (Web site)

Reason

1. Further, with Diffie-Hellman and RSA cryptosystem methods being available, which are much better then DSS, I see no reason for using DSS. (Web site)

Attack

1. If you use Diffie-Hellman to create a shared secret, be sure to hash it first (there's an attack if you use its shared value directly).
2. Techniques for preventing the attack for RSA and Diffie-Hellman are presented.

Value

1. Algorithm paramGenParams Values "Diffie-Hellman" int[] primeLen is the length of the prime in bits, paramGenParams = { which is a value from 256 to 2048.

Related

1. The key exchange protocol is not published, but is generally considered to be related to Diffie-Hellman (see Question 3.6.1).

Scheme

1. MQV (Menezes-Qu-Vanstone) is an authenticated protocol for key agreement based on the Diffie-Hellman scheme.
2. The scheme is provably secure in the random oracle model under the strong RSA and the decisional Diffie-Hellman assumption. (Web site)

Security

1. The security of our scheme depends on a new complexity assumption we call the Strong Diffie-Hellman assumption.
2. The security of our basic protocol against a passive adversary can he proved in the standard model, assuming the Decisional Diffie-Hellman Assumption.

Messages

1. Perfect forward secrecy: Messages are only encrypted with temporary per-message AES keys, negotiated using the Diffie-Hellman key exchange protocol. (Web site)
2. Note again that the Diffie-Hellman algorithm is used to generate secret keys, not to encrypt and decrypt messages. (Web site)

Users

1. Diffie-Hellman can also be used to allow key sharing amongst multiple users. (Web site)
2. In a Diffie-Hellman key exchange, two users (e.g., User A and User B) agree on a common G, g, and q. (Web site)

Variation

1. The OAKLEY Key Determination Protocol, described in RFC 2412, is a key determination and distribution protocol using a variation of Diffie-Hellman. (Web site)

Implementations

1. There is also a new timing attack that can be used to break many implementations of Diffie-Hellman. (Web site)

Publicly

1. Diffie-Hellman (DH) Public key crypto algorithm that generates a shared secret between two entities after they publicly share some randomly generated data.

Generator

1. As with Diffie-Hellman, Alice and Bob have a (publicly known) prime number p and a generator g.

Parties

1. An implementation of the Diffie-Hellman key agreement algorithm between two or more parties. (Web site)

Public

1. That is, the participants agree on public (e.g., Diffie-Hellman) parameters and exchange ephemeral public keys but do not sign the messages.
2. Martin Hellman, US, (public) co-inventor of the Diffie-Hellman key-exchange protocol.

Encryption Algorithm

1. The encryption algorithm is similar in nature to the Diffie-Hellman key agreement protocol. (Web site)
2. The encryption algorithm is similar in nature to the Diffie-Hellman key agreement protocol (see Question 3.6.1).

Elliptic Curves

1. In channel-constrained environments, elliptic curves offer a much better solution than first generation public key systems like Diffie-Hellman. (Web site)

Asymmetric Encryption

1. With Diffie-Hellman, asymmetric encryption is used to exchange session keys. (Web site)

Public Key Encryption

1. Diffie-Hellman provided the foundation for subsequent developments in public key encryption. (Web site)

Ephemeral

1. See also Diffie-Hellman (ephemeral) key-exchange algorithm. (Web site)

Cryptography

1. Safe primes are also important in cryptography because of their use in discrete logarithm -based techniques like Diffie-Hellman key exchange. (Web site)
2. The Diffie-Hellman problem (DHP) is the name of a specific problem in cryptography that was first proposed by Whitfield Diffie and Martin Hellman. (Web site)
3. With the advent of computer programs that implemented variants of the Diffie-Hellman scheme, the age-old boundaries on cryptography were suddenly vanquished. (Web site)

Cryptographic Algorithms

1. Cryptographic algorithms that rely on modular exponentiation such as RSA and Diffie-Hellman may be vulnerable to timing attacks.

Public-Key Cryptography

1. Here you will find information on such terms as "Diffie-Hellman", "public-key cryptography", "digital certificates", etc.

Key

1. The system consults its policy to see if it needs to generate a new Diffie-Hellman key, and generates a new key (with same Group ID) if needed. (Web site)
2. A Diffie-Hellman algorithm where the exchange key values are retained (in the CSP) after the key handle has been destroyed. (Web site)
3. Diffie-Hellman key exchange A key exchange protocol allowing the participants to agree on a key over an insecure channel.

Key Exchange Algorithm

1. Blum-Blum-Shub and RSA), Diffie-Hellman key exchange algorithm and huge integer number mathematical operations. (Web site)
2. The Diffie-Hellman key exchange algorithm to securely exchange session keys. (Web site)
3. Key Exchange Algorithm (KEA): A variation on Diffie-Hellman; proposed as the key exchange method for Capstone. (Web site)

Key Agreement

1. The ElGamal algorithm is an asymmetric key encryption algorithm for public key cryptography which is based on Diffie-Hellman key agreement.
2. EAP-TLS, which relies on Diffie-Hellman key agreement, is such a technique; AES-CCM as defined in IEEE Std 802.11i is used to protect the data exchanged. (Web site)
3. Diffie-Hellman (DH) key agreement involves the derivation of shared secret information based on compatible DH keys from the sender and recipient.

Session Key

1. The client and the server begin communicating using the session key generated by Diffie-Hellman. (Web site)
2. The Diffie-Hellman key exchange algorithm is widely used to permit two parties to agree on a session key.

Discrete Logarithms

1. Diffie-Hellman - the first public-key algorithm, using discrete logarithms in a finite field, invented in 1976.
2. The security of the Diffie-Hellman is based on the difficulty of calculating the discrete logarithms of very large numbers. (Web site)
3. It is based on a problem related to discrete logarithms, namely the Diffie-Hellman problem.

Exponentiation

1. As shown below, Diffie-Hellman uses the idea that finding logarithms is relatively harder than exponentiation. (Web site)
2. An optional Key Exchange payload can be exchanged to allow for an additional Diffie-Hellman exchange and exponentiation per Quick Mode. (Web site)

Elliptic Curve Cryptography

1. The bandwidth cost of the Diffie-Hellman based solution could be significantly decreased with Elliptic Curve Cryptography. (Web site)
2. The External Diffie-Hellman (XDH) assumption is a mathematic assumption used in elliptic curve cryptography.

Certificate

1. Any Diffie-Hellman certificate provided by the client must use the parameters (group and generator) described by the server. (Web site)
2. The server can request an RSA or DSS signature- capable certificate from the client for client authentication or it may request a Diffie-Hellman certificate. (Web site)

Parameters

1. In all cases, the client must have the same type of certificate, and must use the Diffie-Hellman parameters chosen by the server. (Web site)
2. Note: Diffie-Hellman parameters are specified by the server, and may be either ephemeral or contained within the server's certificate. (Web site)
3. This message is not used if the server certificate contains Diffie-Hellman [DH1] parameters. (Web site)

Exchange

1. If the two parties agree on a key by Diffie-Hellman exchange [D-H], then in principle only half of this randomness would have to be supplied by each party.
2. Key generation; the Diffie-Hellman key agreement algorithm is used to enable two computers to exchange a shared encryption key.

Encryption

1. For this reason, it is sometime called Diffie-Hellman encryption. (Web site)
2. ANSI X9.17 is gradually being supplemented by public-key techniques such as Diffie-Hellman encryption (see Question 3.6.1).
3. Contains a Diffie-Hellman key of between 1024 and 4096 bits for encryption and a 1024-bit DSS key for digital signatures. (Web site)

Oakley

1. Oakley key determination protocol (RFC 2412) Oakley creates keys using the Diffie-Hellman key agreement protocol. (Web site)
2. OAKLEY uses the Diffie-Hellman key exchange algorithm.

Elliptic Curve

1. It is relevant to at least RSA, Diffie-Hellman, and Elliptic Curve methods.

Categories

1. Key Exchange
2. Rsa
3. Signatures > Elgamal
4. Diffie
5. Public Key Cryptography

Related Keywords

* Algorithm * Diffie * Diffie-Hellman Key Exchange * Dsa * Ecc * Elgamal * Ike * Keys * Key Exchange * Protocol * Public Key Cryptography * Rsa

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