$\begingroup$ @user3407319 The point of my answer was that whether or not RSA is used for key exchange or for used for data directly depends on the use case. In the case of TLS, if RSA is used, it is as part of the key exchange, and not for the bulk of the data. DH and RSA do not use the same mathematical equation. Starting in Junos OS Release 18.3R1, SRX Series devices support ECDSA cipher suites for SSL proxy. ECDSA is a version of the Digital Signature Algorithm (DSA) and is based on Elli The Wikipedia description of ECDH Key Exchange is: "Elliptic-curve Diffie-Hellman (ECDH) is an anonymous key agreement protocol that allows two parties, each having an elliptic-curve public-private key pair, to establish a shared secret over an insecure channel." ECC keys are better than RSA & DSA keys in that the algorithm is harder to break. So not only are ECC keys more future proof, you can also use smaller length keys (for instance a 256-bit ECC key is as secure as a 3248-bit RSA key). As with DSA it requires a good source of random numbers. Jul 24, 2019 · ECC can be used either to agree keys for symmetric encryption through Elliptic Curve Diffie-Hellman key exchange, or for digital signatures. ECC works using an elliptic curve over finite field - which is not a smooth line but a set of dicrete points in 2D space. Mar 19, 2019 · This video covers different formations of elliptic curve cryptography and how elliptic curve cryptography is applied to diffie helman key exchange. elliptic curve cryptography encryption and ... Jun 11, 2020 · Symmetric key methods need both sites to use the same key. To do this one site must at some stage originate the key then send a copy of it to the other. This SYMMETRIC key, is not sent to the far end openly but is kept safe by first encrypting it using PUBLIC key methods. The public key of the destination site is used for this. Elliptic-curve cryptography (ECC) is type of public-key cryptography based on the algebraic structure of elliptic curves over finite fields. ECC requires smaller keys than to non-EC cryptography (i.e. RSA) to provide equivalent security, and is therefore preferred when higher efficiency or stronger security (via larger keys) is required. Once it is established that asymmetric encryption is needed, it is time to choose the best-fitting tool. The statistics look great for ECC. NIST-recommended key-size tables depict the shorter key advantage ECC has. For an equivalent symmetric key size of 80 bits, RSA requires 1,024 bits, while ECC requires 160 bits (a 3:1 ratio). RFC 8734 Elliptic Curve Cryptography (ECC) Brainpool Curves for Transport Layer Security (TLS) Version 1.3 Abstract. Elliptic Curve Cryptography (ECC) Brainpool curves were an option for authentication and key exchange in the Transport Layer Security (TLS) protocol version 1.2 but were deprecated by the IETF for use with TLS version 1.3 because they had little usage. On the Private Key tab, expand Cryptographic Service Provider and then under Select cryptographic service provider (CSP), do the following: Uncheck RSA, Microsoft Software Key Storage Provider. Check ECDSA_P256, Microsoft Software Key Storage Provider. Recommended ECC key size is 256-bit. From Wikipedia, the free encyclopedia Elliptic-curve Diffie–Hellman (ECDH) is a key agreement protocol that allows two parties, each having an elliptic-curve public–private key pair, to establish a shared secret over an insecure channel. This shared secret may be directly used as a key, or to derive another key. ECDH Key Exchange The ECDH (Elliptic Curve Diffie–Hellman Key Exchange) is anonymous key agreement scheme, which allows two parties, each having an elliptic-curve public–private key pair, to establish a shared secret over an insecure channel. ECC is more resistant to vulnerabilities and offers the same level of security as the commonly used RSA, only with much smaller key sizes. For example, a 256-bit ECC key provides the level of security equivalent to 3072-bit RSA key. Elliptic-curve algorithms are also more friendly for devices with less computational power. Elliptic curve cryptography (ECC) provides a secure means of exchanging keys among communicating hosts using the Diffie–Hellman (DH) key exchange algorithm. This work presents an implementation of ECC encryption making use of the DH key exchange algorithm. Encryption and decryption of text messages have also been attempted. RFC 7383: Internet Key Exchange Protocol Version 2 (IKEv2) Message Fragmentation; RFC 7296: Internet Key Exchange Protocol Version 2 (IKEv2) RFC 7027: Elliptic Curve Cryptography (ECC) Brainpool Curves for Transport Layer Security (TLS) RFC 6989: Additional Diffie-Hellman Tests for the Internet Key Exchange Protocol Version 2 (IKEv2)