SS_OP_AES
rctx->mode = SS_OP_AES | SS_CBC | SS_ENABLED | SS_ENCRYPTION |
rctx->mode = SS_OP_AES | SS_CBC | SS_ENABLED | SS_DECRYPTION |
rctx->mode = SS_OP_AES | SS_ECB | SS_ENABLED | SS_ENCRYPTION |
rctx->mode = SS_OP_AES | SS_ECB | SS_ENABLED | SS_DECRYPTION |