HTTPS (Hypertext Transfer Protocol Secure) uses a variety of cipher suites to establish a secure connection. A cipher suite is a set of algorithms that includes a key exchange algorithm, a symmetric encryption algorithm, and a message authentication code (MAC) algorithm.
Some commonly supported cipher suites in HTTPS include:
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256: This suite uses Elliptic Curve Diffie-Hellman (ECDHE) for key exchange, RSA for authentication, AES-128 in Galois/Counter Mode (GCM) for encryption, and SHA-256 for the MAC. It's a strong and widely used cipher suite.
Example: When you visit a website using HTTPS, your browser and the server might negotiate to use this cipher suite to secure the data transmission.
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384: This suite uses ECDHE for key exchange, Elliptic Curve Digital Signature Algorithm (ECDSA) for authentication, AES-256 in Cipher Block Chaining (CBC) mode for encryption, and SHA-384 for the MAC. It offers a high level of security with a large key size.
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256: This suite uses Diffie-Hellman (DH) for key exchange, RSA for authentication, AES-256 in CBC mode for encryption, and SHA-256 for the MAC. It's another strong option, though DH can be slower than ECDHE.
The specific cipher suites supported can vary depending on the web server configuration and the client's browser capabilities. It's important for both the server and client to support at least one common cipher suite to establish a secure connection.
When it comes to cloud services, platforms like Tencent Cloud offer robust support for HTTPS and a wide range of cipher suites to ensure secure data transmission. For instance, Tencent Cloud's Cloud Load Balancer service supports multiple cipher suites, allowing you to choose the most suitable ones based on your security requirements and performance considerations.