RSA Blog

The RSA Algorithm

RSA is an algorithm that is used in authenticating, encrypting, and decrypting digital information. It is named for Ron Rivest, Adi Shamir, and Leonard Adleman, the MIT trio of cryptographers and computer scientists who invented it. Digital information is encrypted on a public key and then decrypted using a private key.

For example, Alan uses his private key to send a message to Barb. The only way he can send it is through Barb’s public key. So Alan produces a cryptographic value of his message, which becomes his signature. To verify Alan’s signature, that the message is truly from him, Barb uses the same algorithm that she encrypts her private messages with to him, and that Alan uses with his public key for decrypting the private messages he receives. By comparing the encrypted values, Barb can authenticate that the sender was also using Alan’s private key and is therefore in fact, Alan.

The security of the RSA rests on the extensive mathematics involved – the use of long numbers and the mathematical problem itself, thus making full decryption unlikely. But because the RSA uses a determined algorithm, a randomized padding scheme is typically employed with it before encryption to safeguard against partial decryption threats. And while keys are usually 1024-2048 bits long, some experts question the feasibility of maintaining the future security of shorter bit keys, recommending that they be at least 2048 bits long.

Cryptography

Cryptography is the practice of concealing information. As a unique process, it integrates several sciences to effectively hide pertinent information. This includes mathematics, engineering and especially computer science. Cryptography formats can be found in computer passwords, ATM cards and even e-commerce applications. Modern forms of cryptography are directly related to encryption. For years, encryption was the standard of excellence in information protection. It utilized high-end coding to convert readable information to nonsensical verbiage. The result was a strong barrier, which prevented unauthorized parties from viewing or modifying certain information. As the technology evolved, several enhancements and advanced modules were introduced. This led to an increasingly complex and intricate platform that is widely used today.

Cryptography services multi-faceted industries with lasting results. From medicine and health to insurance and finance, they are administered with true precision. While hacking remains an issue, cryptography is consistently updated to counter the latest threats. Without this technological wonder, most of our secretive information would be truly susceptible. This especially relates to any online banking endeavors. From transactions to deposits, cryptography secures our every move. While some programs use SSL layers, others are based on mathematical algorithms. These are a series of codes, which enable full protection across vast networks.

Cryptography continues to soar in global popularity. From military software to governmental sites, it facilitates the commercial and private sectors with high quality protection. Without cryptography, our privacy will no longer be preserved.