Tcl Nano
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#define NANO_SECRET_KEY_LENGTH 32
#define NANO_PUBLIC_KEY_LENGTH 32
#define NANO_BLOCK_HASH_LENGTH 32
#define NANO_BLOCK_SIGNATURE_LENGTH 64
#define NANO_WORK_VALUE_LENGTH 8
#define NANO_WORK_HASH_LENGTH  8
#define NANO_WORK_DEFAULT_MIN  0xffffffc000000000LLU
#define NANO_KDF_ARGON2_MEMORY 64 * 1024
#define NANO_KDF_ARGON2_TIMING 1
#define NANO_KDF_ARGON2_THREADS 1

#define TclNano_AttemptAlloc(x) ((void *) Tcl_AttemptAlloc(x))
#define TclNano_Free(x) Tcl_Free((char *) x)
#define TclNano_SetIntVar(interp, name, intValue) \
	tclobj_ret = Tcl_SetVar2Ex(interp, name, NULL, Tcl_NewIntObj(intValue), TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG); \
	if (!tclobj_ret) { \
		return(TCL_ERROR); \
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	return(TCL_OK);

	/* NOTREACH */
	clientData = clientData;
}

#if 0
static int nano_tcl_derive_key_from_password(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
	void *password, *salt;
	argon2_context argon2_context_item;
	int password_length, salt_length;
	unsigned char result[32];
	int hash_ret;

	if (objc != 2) {
		Tcl_WrongNumArgs(interp, 1, objv, "password");
	if (objc != 3) {
		Tcl_WrongNumArgs(interp, 1, objv, "password salt");

		return(TCL_ERROR);
	}

unsigned char password[] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}
unsigned char salt[] = {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02}
	password = Tcl_GetByteArrayFromObj(objv[1], &password_length);
	salt = Tcl_GetByteArrayFromObj(objv[2], &salt_length);
unsigned char secret[] = {0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03}
unsigned char ad[] = {0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04}
unsigned char phd[] = {0x24, 0xfd, 0xe9, 0x5a, 0x9d, 0xf5, 0x49, 0xd0, 0x02, 0xbd, 0x21, 0xb8, 0xb3, 0x45, 0x57, 0xe0, 0xf2, 0x53, 0x03, 0xd6, 0x53, 0x12, 0xf4, 0xc0, 0x7e, 0x1b, 0x0f, 0x12, 0x75, 0xb3, 0xe9, 0xd9, 0x45, 0xe9, 0x7b, 0x66, 0xbf, 0xe4, 0x27, 0x20, 0x6e, 0xca, 0xc7, 0xea, 0x2f, 0xfb, 0x1b, 0xe2, 0xc8, 0x3a, 0x15, 0xa6, 0x64, 0xb2, 0x4b, 0x4f, 0x6b, 0xc3, 0x34, 0x0d, 0x24, 0x89, 0x0b, 0x13}
unsigned char final_tag[] = {0xf8, 0x7c, 0x95, 0x96, 0xbd, 0xbf, 0x75, 0x0b, 0xfb, 0x35, 0x3a, 0x89, 0x70, 0xe5, 0x44, 0x1a, 0x70, 0x24, 0x3e, 0xb4, 0x90, 0x30, 0xdf, 0xe2, 0x74, 0xd9, 0xad, 0x4e, 0x37, 0x0e, 0x38, 0x9b}

argon2_context_item.pwd = password;
argon2_context_item.pwdlen = sizeof(password);
argon2_context_item.salt = salt;
	hash_ret = argon2_hash(NANO_KDF_ARGON2_TIMING, NANO_KDF_ARGON2_MEMORY, 1,
	                       password, password_length,
	                       salt, salt_length,
argon2_context_item.saltlen = sizeof(salt);
argon2_context_item.secret = secret;
argon2_context_item.secretlen = sizeof(secret);
argon2_context_item.ad = ad;
argon2_context_item.adlen = sizeof(ad);
	                       result, sizeof(result),
argon2_context_item.t_cost = 3;
argon2_context_item.m_cost = 16;
argon2_context_item.lanes = 4;
argon2_context_item.threads = 4;
argon2_context_item.version = ARGON2_VERSION_NUMBER;
argon2_context_item.allocate_cbk = NULL;
argon2_context_item.free_cbk = NULL;
argon2_context_item.flags = 0;
	                       NULL, 0, Argon2_d, 0x10);

	if (hash_ret != ARGON2_OK) {
		Tcl_SetResult(interp, (char *) argon2_error_message(hash_ret), NULL);
		return(TCL_ERROR);
	}

	Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(result, sizeof(result)));

	return(TCL_OK);

	/* NOTREACH */
	clientData = clientData;
}
#endif

static int nano_tcl_hash_data(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
	unsigned char *data, result[NANO_BLOCK_SIGNATURE_LENGTH];
	int tgifo_ret;
	int data_length, result_length;

	if (objc < 2 || objc > 3) {
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	TclNano_CreateObjCommand(interp, "::nano::internal::selfTest", nano_tcl_self_test);
	TclNano_CreateObjCommand(interp, "::nano::internal::generateKey", nano_tcl_generate_keypair);
	TclNano_CreateObjCommand(interp, "::nano::internal::generateSeed", nano_tcl_generate_seed);
	TclNano_CreateObjCommand(interp, "::nano::internal::publicKey", nano_tcl_secret_key_to_public_key);
	TclNano_CreateObjCommand(interp, "::nano::internal::signDetached", nano_tcl_sign_detached);
	TclNano_CreateObjCommand(interp, "::nano::internal::verifyDetached", nano_tcl_verify_detached);
	TclNano_CreateObjCommand(interp, "::nano::internal::hashData", nano_tcl_hash_data);
//	TclNano_CreateObjCommand(interp, "::nano::internal::deriveKeyFromPassword", nano_tcl_derive_key_from_password);
	TclNano_CreateObjCommand(interp, "::nano::internal::deriveKeyFromPassword", nano_tcl_derive_key_from_password);
	TclNano_CreateObjCommand(interp, "::nano::internal::validateWork", nano_tcl_validate_work);
	TclNano_CreateObjCommand(interp, "::nano::internal::generateWork", nano_tcl_generate_work);
	TclNano_CreateObjCommand(interp, "::nano::internal::randomBytes", nano_tcl_random_bytes);

	TclNano_Eval(interp, nanoInitScript);

	TclNano_PkgProvide(interp, "nano", PACKAGE_VERSION);

	return(TCL_OK);
}
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