OSSL_CIPHER_PARAM_XTS_STANDARD
OSSL_PARAM_utf8_string(OSSL_CIPHER_PARAM_XTS_STANDARD, NULL, 0),
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_XTS_STANDARD);
params[0] = OSSL_PARAM_construct_utf8_string(OSSL_CIPHER_PARAM_XTS_STANDARD,