$CIPHER_CAMELIA_128
Camelia cipher with a 128 bit key.
$CIPHER_BLOWFISH
Blowfish cipher.
$CIPHER_CAST5
CAST5 cipher (also known as CAST-128 due to its use of a 128 bit key)
$CIPHER_CHACHA20
ChaCha20 cipher, with optional authenticated data.
$CIPHER_CHACHA20_OPENSSH
ChaCha20 cipher with authenticated data (OpenSSH variant)
$CIPHER_AES_128
Advanced Encryption Standard cipher with a 128 bit key.
$CIPHER_CAMELIA_256
Camelia cipher with a 256 bit key.
$CIPHER_AES_192
Advanced Encryption Standard cipher with a 192 bit key.
$CIPHER_3DES
Triple-DES cipher.
$CIPHER_AES_256
Advanced Encryption Standard cipher with a 256 bit key.
$CIPHER_TWOFISH
Twofish cipher.
$CIPHER_DES
Data Encryption Standard cipher.
$CIPHER_CAMELIA_192
Camelia cipher with a 192 bit key.