1. Release Notes
  2. Introduction to S-Cz9.3.0
  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_AES_128_GCM_SHA256
  • TLS_AES_256_GCM_SHA384
  • TLS_CHACHA20_POLY1305_SHA256
  • TLS_AES_128_CCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Oracle supports the following ciphers, but does not include them in the DEFAULT cipher list:
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_GCM_SHA384
  • TLS_RSA_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_RSA_WITH_AES_128_GCM_SHA256
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. The verify-config command returns a warning if these ciphers are used.
  • TLS_AES_128_CCM_8_SHA256 (demoted to weak in 9.3.0)
  • TLS_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Oracle supports the following ciphers for debugging purposes only:
  • TLS_RSA_WITH_NULL_SHA256
  • TLS_RSA_WITH_NULL_SHA
  • TLS_RSA_WITH_NULL_MD5

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

WARNING:

When you set tls-version to either tlsv12 or tlsv13, and you want to use ciphers that Oracle considers not secure, you must manually add them to the cipher-list attribute.

TLS 1.0 and TLS 1.1 are not supported in this release.