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/* XXX:TODO: OpenMP support is currently incomplete */
#undef NANO_TCL_HAVE_OPENMP
#include <stdint.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <tcl.h>
#ifdef NANO_TCL_HAVE_OPENMP
# include <omp.h>
#endif
#include "randombytes.h"
#include "tweetnacl.h"
#include "blake2.h"
#include "monocypher.h"
#include "argon2.h"
#define NANO_SECRET_KEY_LENGTH (crypto_sign_SECRETKEYBYTES - crypto_sign_PUBLICKEYBYTES)
#define NANO_PUBLIC_KEY_LENGTH (crypto_sign_PUBLICKEYBYTES)
#define NANO_SECRET_KEY_LENGTH 32
#define NANO_PUBLIC_KEY_LENGTH 32
#define NANO_BLOCK_HASH_LENGTH 32
#define NANO_BLOCK_SIGNATURE_LENGTH crypto_sign_BYTES
#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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#define TclNano_PkgProvide(interp, name, version) \
tclcmd_ret = Tcl_PkgProvide(interp, name, version); \
if (tclcmd_ret != TCL_OK) { \
return(tclcmd_ret); \
}
static unsigned char *nano_parse_secret_key(Tcl_Obj *secret_key_only_obj, int *out_key_length) {
unsigned char *secret_key, *public_key, *secret_key_only;
int secret_key_length, secret_key_only_length;
unsigned char *public_key, *secret_key_only;
int public_key_length, secret_key_only_length;
secret_key_only = Tcl_GetByteArrayFromObj(secret_key_only_obj, &secret_key_only_length);
if (secret_key_only_length != NANO_SECRET_KEY_LENGTH) {
return(NULL);
}
if ((NANO_SECRET_KEY_LENGTH + NANO_PUBLIC_KEY_LENGTH) != crypto_sign_SECRETKEYBYTES) {
public_key_length = NANO_PUBLIC_KEY_LENGTH;
return(NULL);
}
secret_key_length = crypto_sign_SECRETKEYBYTES;
secret_key = TclNano_AttemptAlloc(secret_key_length);
if (!secret_key) {
memcpy(secret_key, secret_key_only, secret_key_only_length);
public_key = secret_key + secret_key_only_length;
crypto_sign_keypair(public_key, secret_key, 0);
*out_key_length = secret_key_length;
return(secret_key);
*out_key_length = public_key_length;
return(public_key);
}
static int nano_tcl_generate_keypair(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
unsigned char secret_key[crypto_sign_SECRETKEYBYTES], public_key[crypto_sign_PUBLICKEYBYTES];
unsigned char secret_key[NANO_SECRET_KEY_LENGTH], public_key[NANO_PUBLIC_KEY_LENGTH];
unsigned char *seed, *buffer, buffer_s[NANO_SECRET_KEY_LENGTH + 4];
long seed_index;
int seed_length, buffer_length;
int csk_ret, tglfo_ret;
int tglfo_ret;
if (objc != 1 && objc != 3) {
Tcl_WrongNumArgs(interp, 1, objv, "?seed index?");
return(TCL_ERROR);
}
if (objc == 1) {
csk_ret = crypto_sign_keypair(public_key, secret_key, 1);
randombytes(secret_key, NANO_SECRET_KEY_LENGTH);
if (csk_ret != 0) {
Tcl_SetResult(interp, "Internal error", NULL);
return(TCL_ERROR);
}
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buffer += seed_length;
buffer[0] = (seed_index >> 24) & 0xff;
buffer[1] = (seed_index >> 16) & 0xff;
buffer[2] = (seed_index >> 8) & 0xff;
buffer[3] = seed_index & 0xff;
buffer -= seed_length;
blake2b(secret_key, NANO_SECRET_KEY_LENGTH, buffer, buffer_length, NULL, 0);
crypto_blake2b_general(secret_key, NANO_SECRET_KEY_LENGTH, NULL, 0, buffer, buffer_length);
}
Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(secret_key, NANO_SECRET_KEY_LENGTH));
return(TCL_OK);
/* NOTREACH */
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public_key = TclNano_AttemptAlloc(public_key_length);
if (!public_key) {
Tcl_SetResult(interp, "Internal error", NULL);
return(TCL_ERROR);
}
crypto_sign_keypair(public_key, secret_key, 0);
crypto_sign_public_key(public_key, secret_key);
Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(public_key, public_key_length));
TclNano_Free(public_key);
return(TCL_OK);
/* NOTREACH */
clientData = clientData;
}
static int nano_tcl_sign_detached(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int cs_ret;
unsigned char *signature, *data, *secret_key;
int data_length, secret_key_length;
int data_length, public_key_length, secret_key_length;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 1, objv, "data secretKey");
return(TCL_ERROR);
}
data = Tcl_GetByteArrayFromObj(objv[1], &data_length);
signature_length = data_length + NANO_BLOCK_SIGNATURE_LENGTH;
if (signature_length >= UINT_MAX) {
Tcl_SetResult(interp, "Input message too long", NULL);
signature_length = NANO_BLOCK_SIGNATURE_LENGTH;
secret_key = Tcl_GetByteArrayFromObj(objv[2], &secret_key_length);
if (secret_key_length != NANO_SECRET_KEY_LENGTH) {
Tcl_SetResult(interp, "Secret key is not the right size", NULL);
return(TCL_ERROR);
}
secret_key = nano_parse_secret_key(objv[2], &secret_key_length);
public_key = nano_parse_secret_key(objv[2], &public_key_length);
if (!secret_key) {
Tcl_SetResult(interp, "Secret key is not the right size", NULL);
return(TCL_ERROR);
}
signature = TclNano_AttemptAlloc(signature_length);
if (!signature) {
TclNano_Free(secret_key);
TclNano_Free(public_key);
Tcl_SetResult(interp, "Unable to allocate memory", NULL);
return(TCL_ERROR);
}
cs_ret = crypto_sign(signature, &signature_length, data, data_length, secret_key);
if (cs_ret != 0) {
TclNano_Free(secret_key);
TclNano_Free(signature);
Tcl_SetResult(interp, "crypto_sign failed", NULL);
return(TCL_ERROR);
}
TclNano_Free(secret_key);
TclNano_Free(public_key);
return(TCL_OK);
/* NOTREACH */
clientData = clientData;
}
static int nano_tcl_verify_detached(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int cso_ret;
unsigned char *signature, *data, *signed_data, *verify_data, *public_key;
int signature_length, data_length, signed_data_length, verify_data_length, public_key_length;
int cc_ret;
unsigned char *signature, *data, *public_key;
int signature_length, data_length, public_key_length;
unsigned long long verify_data_length_nacl;
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public_key = Tcl_GetByteArrayFromObj(objv[3], &public_key_length);
if (public_key_length != NANO_PUBLIC_KEY_LENGTH) {
Tcl_SetResult(interp, "Public key is not the right size", NULL);
return(TCL_ERROR);
}
signed_data_length = data_length + signature_length;
signed_data = TclNano_AttemptAlloc(signed_data_length);
if (!signed_data) {
Tcl_SetResult(interp, "Internal error", NULL);
return(TCL_ERROR);
}
memcpy(signed_data, signature, signature_length);
memcpy(signed_data + signature_length, data, data_length);
verify_data_length = signed_data_length;
verify_data = TclNano_AttemptAlloc(verify_data_length);
if (!verify_data) {
TclNano_Free(verify_data);
Tcl_SetResult(interp, "Internal error", NULL);
return(TCL_ERROR);
}
verify_data_length_nacl = verify_data_length;
cso_ret = crypto_sign_open(verify_data, &verify_data_length_nacl, signed_data, signed_data_length, public_key);
if (cso_ret == 0) {
if (!cc_ret) {
result = 1;
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(result));
TclNano_Free(signed_data);
TclNano_Free(verify_data);
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(result));
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if (result_length > sizeof(result)) {
Tcl_SetResult(interp, "Hash length too large", NULL);
return(TCL_ERROR);
}
blake2b(result, result_length, data, data_length, NULL, 0);
crypto_blake2b_general(result, result_length, NULL, 0, data, data_length);
} else {
/*
* Default to the same as the cryptographic primitive
*/
crypto_hash(result, data, data_length);
crypto_blake2b(result, data, data_length);
result_length = NANO_BLOCK_SIGNATURE_LENGTH;
}
Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(result, result_length));
return(TCL_OK);
/* NOTREACH */
clientData = clientData;
}
static int nano_validate_work(const unsigned char *blockhash, const unsigned char *work, uint64_t workMin) {
unsigned char workReversed[NANO_WORK_VALUE_LENGTH], workCheck[NANO_WORK_HASH_LENGTH];
unsigned int idxIn, idxOut;
blake2b_state workhash_state;
crypto_blake2b_ctx workhash_state;
uint64_t workValue;
int blake2_ret;
blake2_ret = blake2b_init(&workhash_state, sizeof(workCheck));
crypto_blake2b_general_init(&workhash_state, sizeof(workCheck), NULL, 0);
if (blake2_ret != 0) {
return(0);
}
blake2_ret = blake2b_update(&workhash_state, workReversed, sizeof(workReversed));
if (blake2_ret != 0) {
return(0);
}
blake2_ret = blake2b_update(&workhash_state, blockhash, NANO_BLOCK_HASH_LENGTH);
if (blake2_ret != 0) {
return(0);
}
blake2_ret = blake2b_final(&workhash_state, workCheck, sizeof(workCheck));
if (blake2_ret != 0) {
return(0);
}
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static void nano_generate_work(const unsigned char *blockhash, unsigned char *workOut, uint64_t workMin) {
unsigned char work[NANO_WORK_VALUE_LENGTH];
unsigned int offset;
int work_valid;
memcpy(work, blockhash, sizeof(work));
#pragma omp target map(tofrom:work)
/* XXX:TODO: INCOMPLETE OpenMP support #pragma omp target map(tofrom:work) */
while (1) {
work_valid = nano_validate_work(blockhash, work, workMin);
if (work_valid) {
break;
}
offset = 0;
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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::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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