暗号化方式

OPENSSL_CIPHER_RC2_40 (int)

OPENSSL_CIPHER_RC2_128 (int)

OPENSSL_CIPHER_RC2_64 (int)

OPENSSL_CIPHER_DES (int)

OPENSSL_CIPHER_3DES (int)

OPENSSL_CIPHER_AES_128_CBC (int)

OPENSSL_CIPHER_AES_192_CBC (int)

OPENSSL_CIPHER_AES_256_CBC (int)