3DES

Please see EVP Symmetric Encryption and Decryption or EVP Authenticated Encryption and Decryption. The choice of EVP_CIPHER includes:

$ grep -IR EVP_aes * | awk '{print $3;}' | grep EVP_ | sed 's|\*||g; s|\(void\)||g; s|\;||g; s|,||g;' | sort | uniq
...
$ grep -IR EVP_des * | awk '{print $3;}' | grep EVP_ | sed 's|\*||g; s|\(void\)||g; s|\;||g; s|,||g;' | sort | uniq
EVP_CIPHER
EVP_des_cbc
EVP_des_cbc()
EVP_des_cfb
EVP_des_cfb()
EVP_des_cfb1()
EVP_des_cfb64()
EVP_des_cfb8()
EVP_des_ecb()
EVP_des_ede()
EVP_des_ede3
EVP_des_ede3()
EVP_des_ede3_cbc()
EVP_des_ede3_cfb
EVP_des_ede3_cfb()
EVP_des_ede3_cfb1()
EVP_des_ede3_cfb64()
EVP_des_ede3_cfb8()
EVP_des_ede3_ecb()
EVP_des_ede3_ofb()
EVP_des_ede3_wrap()
EVP_des_ede_cbc
EVP_des_ede_cbc()
EVP_des_ede_cfb
EVP_des_ede_cfb()
EVP_des_ede_cfb64()
EVP_des_ede_ecb()
EVP_des_ede_ofb()
EVP_des_ofb()
EVP_desx_cbc()