RSA Algorithm Vs. DSA: Explore the Difference Between RSA Algorithm and DSA
Both of these are types of encryption algorithms that vary in terms of their functionalities. We use both of these algorithms for cybersecurity, and they have a similar type of use. In this article, we will dive into the difference between RSA algorithm and DSA algorithm in a tabular form. But let us first know a bit more about each of these in detail.
What is the RSA Algorithm?
The term RSA is an acronym for Rivest-Shamir-Adleman. RSA is basically a type of cryptosystem that one can use to secure the transmission of data. In the case of the RSA algorithm, the encryption key stays public, and the decryption key stays private. This algorithm works on the basis of the mathematical fact that it is not easy to factor the product of two prime numbers (large). Leonard Adleman, Adi Shamir, and Ron Rivest developed the RSA algorithm in 1977.
What is the DSA Algorithm?
The term DSA is an acronym for Digital Signature Algorithm. We can basically use it in case of digital signatures and for verifying it. The DSA algorithm works on the basis of the mathematical concept of discrete logarithms and modular exponentiation. The NIST (National Institute of Standards and Technology) developed this algorithm back in the year 1991.
The DSA involves four major operations:
- Generation of Keys
- Distribution of Keys
- Signing
- Verification of Signing
Difference Between RSA algorithm and DSA
| Parameters | RSA Algorithm | DSA Algorithm |
| Type of Algorithm | RSA is a type of cryptosystem algorithm. | DSA is a type of digital signature algorithm. |
| Use | One can use the RSA algorithm for securing the transmission of data. | One can use the DSA algorithm for the digital signatures and their verification. |
| Developers | Leonard Adleman, Adi Shamir, and Ron Rivest developed the RSA algorithm. | The NIST (National Institute of Standards and Technology) developed the DSA algorithm. |
| Year of Development | The RSA algorithm came into existence in 1977. | The DSA algorithm came into existence back in the year 1991. |
| Mathematical Concept | This algorithm works on the basis of the mathematical fact that it is not easy to factor the product of two prime numbers (large). | The DSA algorithm works on the basis of the mathematical concept of discrete logarithms and modular exponentiation. |
| Key Generation | The process of key generation is slower in RSA. | The process of key generation is slower in DSA. |
| Speed of Encryption | As compared to DSA, the RSA algorithm is slower in encryption. | As compared to RSA, the DSA algorithm is faster in decryption. |
| Suitable Use | RSA works best in the cases of encryption and verification. | DSA works best in the cases of signing (digital) and decryption. |
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