Currently deprecated:
- ECB Cipher_Mode for block ciphers
- 3DES and SEED ciphersuites in TLS
- PBKDF1 key derivation
- DSA auth in TLS (not ECDSA)
- Old (Google specific) ChaCha20 TLS ciphersuites
- All built in ECC groups < 256 bits
- All built in MODP groups < 2048 bits
- All pre-created DSA groups