Understanding the Key Differences between SSL and TLS

TLDRThis video provides a high-level overview of the key differences between SSL and TLS, explaining the similarities, differences in hashing functions, algorithms used for key exchange, data encryption, and message authentication code. TLS is the more updated and secure version of SSL, and it is important to use TLS 1.2 or higher for public-facing web applications.

Key insights

🔒SSL and TLS follow the same process, but there are some subtle differences in hashing functions, algorithms used for key exchange, data encryption, and message authentication code.

🔑SSL can use older hashing functions like MD5 or SHA-1, while TLS uses SHA-256, which is collision-resistant and more secure.

🔒SSL can use DES or RC4 for data encryption, while TLS uses AES, which is the more advanced and secure encryption standard.

🔐SSL uses a message authentication code (MAC), while TLS uses a hashed message authentication code (HMAC) that provides more security by using a secret key in the hashing function.

💡When referring to SSL certificates or TLS certificates, they essentially mean the same thing and are often used interchangeably in the industry.

Q&A

What is the difference between SSL and TLS?

SSL and TLS are similar in process but have differences in hashing functions, algorithms used for key exchange, data encryption, and message authentication code. TLS is the more updated and secure version of SSL.

Which versions of SSL and TLS are considered secure?

SSL 3.0 and earlier versions are considered vulnerable, while TLS 1.2 and 1.3 are the most recent versions and considered secure.

What hashing functions does SSL use?

SSL can use older hashing functions like MD5 or SHA-1, which are considered deprecated due to collision vulnerabilities.

What hashing function does TLS use?

TLS uses SHA-256, which is collision-resistant and more secure compared to older hashing functions used by SSL.

What encryption standard does SSL use?

SSL can use DES or RC4 for data encryption, but these are considered less secure. TLS uses AES, the more advanced and secure encryption standard.

Timestamped Summary

00:00This video provides a high-level overview of the key differences between SSL and TLS, explaining the similarities, differences in hashing functions, algorithms used for key exchange, data encryption, and message authentication code.

01:23SSL and TLS follow a similar process, including a client and server handshake, key exchange, and encryption of data sent between client and server.

02:03SSL can use older hashing functions like MD5 or SHA-1, while TLS uses the more secure SHA-256, which is collision-resistant.

02:47SSL can use DES or RC4 for data encryption, while TLS uses the more advanced and secure AES encryption standard.

03:30SSL uses a message authentication code (MAC), while TLS uses a hashed message authentication code (HMAC) that provides more security.