Description: Encryption algorithm to be used for payload encryption in IPsec: o any: accept all supported algorithms as responder, use various pre-defined as initiator o des: DES o des3: Triple-DES o aes128: AES-CBC with 128 key bits o aes192: AES-CBC with 192 key bits o aes256: AES-CBC with 256 key bits o aes128ctr: AES-COUNTER with 128 key bits o aes192ctr: AES-COUNTER with 192 key bits o aes256ctr: AES-COUNTER with 256 key bits o aes128gcm64: AES-GCM with 64 bit ICV with 128 key bits o aes128gcm96: AES-GCM with 96 bit ICV with 128 key bits o aes128gcm128: AES-GCM with 128 bit ICV with 128 key bits o aes192gcm64: AES-GCM with 64 bit ICV with 192 key bits o aes192gcm96: AES-GCM with 96 bit ICV with 192 key bits o aes192gcm128: AES-GCM with 128 bit ICV with 192 key bits o aes256gcm64: AES-GCM with 64 bit ICV with 256 key bits o aes256gcm96: AES-GCM with 96 bit ICV with 256 key bits o aes256gcm128: AES-GCM with 128 bit ICV with 256 key bits