Check Supported Ciphers in OpenSSL

OpenSSL is crucial for securing web applications by implementing TLS and SSL protocols. One of the essential tasks when managing SSL/TLS is to understand which ciphers are supported by your OpenSSL installation. This can help you configure secure connections and ensure compatibility with various servers. This tutorial demonstrates how to check supported ciphers in OpenSSL.

To list all the ciphers supported by your version of OpenSSL, use the following command:

openssl ciphers -v

This command will display a detailed list of all available ciphers, including their names, protocols, key exchange algorithms, and encryption methods. Output example:

TLS_AES_256_GCM_SHA384         TLSv1.3 Kx=any      Au=any   Enc=AESGCM(256)            Mac=AEAD
TLS_CHACHA20_POLY1305_SHA256   TLSv1.3 Kx=any      Au=any   Enc=CHACHA20/POLY1305(256) Mac=AEAD
TLS_AES_128_GCM_SHA256         TLSv1.3 Kx=any      Au=any   Enc=AESGCM(128)            Mac=AEAD
...
AES128-SHA                     SSLv3   Kx=RSA      Au=RSA   Enc=AES(128)               Mac=SHA1
PSK-AES128-CBC-SHA256          TLSv1   Kx=PSK      Au=PSK   Enc=AES(128)               Mac=SHA256
PSK-AES128-CBC-SHA             SSLv3   Kx=PSK      Au=PSK   Enc=AES(128)               Mac=SHA1