The AES 128-bit encryption algorithm.
The AES 192-bit encryption algorithm.
The AES 256-bit encryption algorithm.
The Camellia 128-bit encryption algorithm.
The Camellia 192-bit encryption algorithm.
The Camellia 256-bit encryption algorithm.
The Cast-5 128-bit encryption algorithm.
The DES 56-bit encryption algorithm (extremely weak).
The Triple-DES encryption algorithm.
The IDEA 128-bit encryption algorithm.
The Blowfish encryption algorithm.
The Twofish encryption algorithm.
The RC2 40-bit encryption algorithm (S/MIME only; extremely weak).
The RC2 64-bit encryption algorithm (S/MIME only; very weak).
The RC2 128-bit encryption algorithm (S/MIME only).
The SEED 128-bit encryption algorithm (S/MIME only).
Encryption algorithms supported by S/MIME and OpenPGP.