★HMAC, a popular authentication mechanism used for authenticating a message using cryptographic hash functions.
HMAC message authentication system
★HMAC, a popular authentication mechanism used for authenticating a message using cryptographic hash functions. We can use HMAC with any iterative cryptographic hash function family, in combination with a shared secret key. The strength of HMAC depends on the underlying properties of the cryptographic hash function. In today’s computing world HMAC providing a necessary way to check the integrity of the message transmitted either stored in an unreliable medium. The mechanism used by HMAC to perform an integrity check on a shared secret key between two parties called the Hash message authentication code (HMAC).
Design and Development:
★In this section, we use HMAC to design and develop a message-based system to encrypt and decrypt messages using an RSA algorithm. We implement and verify both the integrity and authenticity of messages between the two campuses and the required procedures such as designing, developing, testing various operations documented with cryptool open-source software.
Step 1: First, click on the left side navigation bar “NEW” icon in the Menu section as shown below in Fig1.
In Fig.1 To create a new project (workspace).
On the left side, CrypTool 2 (CT2) contains various classical and modern ciphers. We will use the search tool to fetch our ciphers.
Step 2: Open a “Text Input” file using the component “search” box. Find the “search” on the left side of the cryptool workspace. We will create two “Text Input” file as like shown in Fig.2.
In Fig.2 To create a text input and a Key input.
**Step 3: **Now, we need to add an “AES” encryption algorithm to the workspace. Use the component “search” box to find AES.
Note: 1. Set Action to “Encrypt”.
2. Set Key size to “256 bit”.
In Fig.3. To create an “AES” algorithm.
**Step 4: **Now, we will add an “SHA” algorithm file into the workspace and to establish a link between “Text Input”, “SHA”, and “AES” as like shown in Fig.22.
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