In SSL, the server key is used only to transmit a random 256-bit key (that one does not have mathematical structure, it is just a bunch of bits); roughly speaking, the client generates a random 256-bit key, encrypts it with the server's RSA public key (the one which is in the server's certificate and is a "2048-bit key"), and sends the result
Supported Protocols and Ciphers - Amazon CloudFront Supported SSL/TLS Protocols and Ciphers for Communication Between CloudFront and Your Origin If you choose to require HTTPS between CloudFront and your origin, you can decide which SSL/TLS protocol to allow for the secure connection, and then pick any supported cipher for CloudFront (see the following tables) to establish an HTTPS connection to your origin. 128 vs 256-bit SSL Encryption - What are Differences? Jun 22, 2020 What Level of SSL or TLS is Required for HIPAA - LuxSci Jan 02, 2020 Configuring secure cipher suites in Windows Server 2019
Ashok + @EJP: you don't need Bouncy, and anyway there is no JCA/provider interface for individual SSL/TLS suites, only the whole protocol. Java7 JSSE supports that suite out of the box.
Jun 08, 2019 ssl - How can I disable TLS_ECDHE_RSA_WITH_AES_256_CBC The cipher suite you are trying to remove is called ECDHE-RSA-AES256-SHA384 by openssl.. Whenever in your list of ciphers appears AES256 not followed by GCM, it means the server will use AES in Cipher Block Chaining mode. This cipher is by no means broken or weak (especially when used with a good hash function like the SHA-2 variants you have in your list). Java AES 256 Encryption Decryption Example - HowToDoInJava
Well, yes it can be decrypted by using computational power beyond our limits, but there is something interesting. Now I can say that yup they can be decrypted easily using quantum computing. If you don't know about quantum computing just consider
Supported SSL/TLS Protocols and Ciphers for Communication Between CloudFront and Your Origin If you choose to require HTTPS between CloudFront and your origin, you can decide which SSL/TLS protocol to allow for the secure connection, and then pick any supported cipher for CloudFront (see the following tables) to establish an HTTPS connection to your origin. 128 vs 256-bit SSL Encryption - What are Differences? Jun 22, 2020 What Level of SSL or TLS is Required for HIPAA - LuxSci Jan 02, 2020 Configuring secure cipher suites in Windows Server 2019 Jun 08, 2019