aes_xts_ctx
struct aes_xts_ctx xtsctx, *ctxp;
aes_xts_crypt(struct aes_xts_ctx *ctx, const uint8_t *in, uint8_t *out,
struct aes_xts_ctx *ctx;
.ctxsize = sizeof(struct aes_xts_ctx),
struct aes_xts_ctx *ctx = key;