1. Release Notes
  2. Introduction to S-Cz8.3.0
  3. TLS Cipher Updates

TLS Cipher Updates

Note the following changes to the DEFAULT cipher list.

Oracle recommends the following ciphers, and includes them in the DEFAULT cipher list:
  • TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA256
Oracle supports the following ciphers, but does not include them in the DEFAULT cipher list:
  • TLS_RSA_WITH_AES_256_GCM_SHA384
  • TLS_RSA_WITH_AES_128_GCM_SHA256
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_RSA_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_3DES_EDE_CBC_SHA
Oracle supports the following ciphers for debugging purposes only:
  • TLS_RSA_WITH_NULL_SHA256 (debug only)
  • TLS_RSA_WITH_NULL_SHA (debug only)
  • TLS_RSA_WITH_NULL_MD5 (debug only)
Oracle supports the following ciphers, but considers them not secure. They are not included in the DEFAULT cipher-list, but they are included when you set the cipher-list attribute to ALL. Note that they trigger verify-config error messages.
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA

To configure TLS ciphers, use the cipher-list attribute in the tls-profile configuration element.

WARNING:

When you set tls-version to either tlsv1 or tlsv11 and you want to use ciphers that Oracle considers not secure, you must manually add them to the cipher-list attribute.

Note:

The default is TLSv1.2. Oracle supports TLS1.0 and TLS1.1 for backward compatibility, only, and they may be deprecated in the future. TLS 1.0 is planned to be deprecated in the next release.