# How is D RSA calculated?

**d**, use the Extended Euclidean Algorithm to

**calculate d**=e−1modϕ, also written

**d**=(1/e)modϕ. This is known as modular inversion . Note that this is not integer division. The modular inverse

**d**is defined as the integer value such that e

**d**=1modϕ.

Thereof, where is RSA used?

**RSA** is still seen in a range of web browsers, email, VPNs, chat and other communication channels. **RSA** is also often **used** to make secure connections between VPN clients and VPN servers. Under protocols like OpenVPN, TLS handshakes can use the **RSA** algorithm to exchange keys and establish a secure channel.

Subsequently, question is, what does RSA stand for? A public-key encryption technology developed by **RSA** Data Security, Inc. The acronym **stands** for Rivest, Shamir, and Adelman, the inventors of the technique. The **RSA** algorithm is based on the fact that there is no efficient way to factor very large numbers.

Considering this, what is RSA algorithm with example?

**RSA algorithm** is asymmetric cryptography **algorithm**. As the name describes that the Public Key is given to everyone and Private key is kept private. An **example** of asymmetric cryptography : A client (for **example** browser) sends its public key to the server and requests for some data.

What is RSA key?

**RSA key** is a private **key** based on **RSA** algorithm. It is a part of the public **key** infrastructure that is generally used in case of SSL certificates. A public **key** infrastructure assumes asymmetric encryption where two types of **keys** are used: Private **Key** and Public **Key** (it is included in an SSL certificate).