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KeccakSum.c
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KeccakSum.c
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/*
Implementation by Gilles Van Assche and Ronny Van Keer, hereby denoted as "the implementer".
For more information, feedback or questions, please refer to our website:
https://keccak.team/
To the extent possible under law, the implementer has waived all copyright
and related or neighboring rights to the source code in this file.
http://creativecommons.org/publicdomain/zero/1.0/
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "base64.h"
#include "KeccakHash.h"
#include "KangarooTwelve.h"
#include "SP800-185.h"
int hexencode(const void* data_buf, size_t dataLength, char* result, size_t resultSize)
{
const char hexchars[] = "0123456789abcdef";
const uint8_t *data = (const uint8_t *)data_buf;
size_t resultIndex = 0;
size_t x;
for(x=0; x<dataLength; x++) {
if (resultIndex >= resultSize) return 1; /* indicate failure: buffer too small */
result[resultIndex++] = hexchars[(data[x] / 16) % 16];
if (resultIndex >= resultSize) return 1; /* indicate failure: buffer too small */
result[resultIndex++] = hexchars[data[x] % 16];
}
if(resultIndex >= resultSize) return 1; /* indicate failure: buffer too small */
result[resultIndex] = 0;
return 0; /* indicate success */
}
#define bufferSize 65536
#define algorithm_Keccak 0
#define algorithm_K12 1
#define algorithm_ParallelHash 2
typedef struct {
unsigned int algorithm;
unsigned int rate;
unsigned int capacity;
unsigned int hashbitlen;
unsigned char delimitedSuffix;
unsigned int blockByteLen;
} Specifications;
typedef union {
Keccak_HashInstance keccak;
KangarooTwelve_Instance k12;
ParallelHash_Instance ph;
} Instance;
int hashInitialize(Instance *instance, const Specifications *specs)
{
if (specs->algorithm == algorithm_Keccak) {
if (Keccak_HashInitialize(&instance->keccak, specs->rate, specs->capacity, specs->hashbitlen, specs->delimitedSuffix)) {
printf("Incorrect Keccak parameters (%d, %d, %d, 0x%02x).\n", specs->rate, specs->capacity, specs->hashbitlen, specs->delimitedSuffix);
return -1;
}
else
return 0;
}
else if (specs->algorithm == algorithm_K12) {
if (KangarooTwelve_Initialize(&instance->k12, specs->hashbitlen/8)) {
printf("Incorrect KangarooTwelve parameters.\n");
return -1;
}
else
return 0;
}
else if (specs->algorithm == algorithm_ParallelHash) {
if (specs->capacity == 256) {
if (ParallelHash128_Initialize(&instance->ph, specs->blockByteLen, specs->hashbitlen, "", 0)) {
printf("Incorrect ParallelHash128 parameters.\n");
return -1;
}
else
return 0;
}
else if (specs->capacity == 512) {
if (ParallelHash256_Initialize(&instance->ph, specs->blockByteLen, specs->hashbitlen, "", 0)) {
printf("Incorrect ParallelHash256 parameters.\n");
return -1;
}
else
return 0;
}
else {
printf("Incorrect ParallelHash parameters.\n");
return -1;
}
}
else
return -1;
}
int hashUpdate(Instance *instance, const Specifications *specs, const unsigned char *buffer, size_t size)
{
if (specs->algorithm == algorithm_Keccak)
Keccak_HashUpdate(&instance->keccak, buffer, size*8);
else if (specs->algorithm == algorithm_K12)
KangarooTwelve_Update(&instance->k12, buffer, size);
else if ((specs->algorithm == algorithm_ParallelHash) && (specs->capacity == 256))
ParallelHash128_Update(&instance->ph, buffer, size*8);
else if ((specs->algorithm == algorithm_ParallelHash) && (specs->capacity == 512))
ParallelHash256_Update(&instance->ph, buffer, size*8);
return 0;
}
int hashFinal(Instance *instance, const Specifications *specs, unsigned char *buffer)
{
if (specs->algorithm == algorithm_Keccak)
Keccak_HashFinal(&instance->keccak, buffer);
else if (specs->algorithm == algorithm_K12)
KangarooTwelve_Final(&instance->k12, buffer, "", 0);
else if ((specs->algorithm == algorithm_ParallelHash) && (specs->capacity == 256))
ParallelHash128_Final(&instance->ph, buffer);
else if ((specs->algorithm == algorithm_ParallelHash) && (specs->capacity == 512))
ParallelHash256_Final(&instance->ph, buffer);
return 0;
}
int processFile(const char *fileName, const Specifications *specs, int base64)
{
FILE *fp;
Instance instance;
size_t read;
unsigned char buffer[bufferSize];
char display[bufferSize*2+1];
if (specs->hashbitlen > (bufferSize*8)) {
printf("The requested digest length (%d bits) does not fit in the buffer.\n", specs->hashbitlen);
return -1;
}
if (strcmp("-", fileName) == 0) {
fp = stdin;
}
else {
fp = fopen(fileName, "rb");
if (fp == NULL) {
printf("File '%s' could not be opened.\n", fileName);
return -1;
}
}
if (hashInitialize(&instance, specs)) {
fclose(fp);
return -1;
}
do {
read = fread(buffer, 1, bufferSize, fp);
if (read > 0)
hashUpdate(&instance, specs, buffer, read);
} while(read>0);
if (fp != stdin) {
fclose(fp);
}
hashFinal(&instance, specs, buffer);
if (base64) {
if (base64encode(buffer, (specs->hashbitlen+7)/8, display, bufferSize*2)) {
printf("Error while converting to base64.\n");
return -1;
}
}
else {
if (hexencode(buffer, (specs->hashbitlen+7)/8, display, bufferSize*2)) {
printf("Error while converting to hex.\n");
return -1;
}
}
printf("%s ", display);
printf("%s\n", fileName);
return 0;
}
int processString(const char *input, const Specifications *specs, int base64)
{
Instance instance;
unsigned char buffer[bufferSize];
char display[bufferSize*2+1];
if (specs->hashbitlen > (bufferSize*8)) {
printf("The requested digest length (%d bits) does not fit in the buffer.\n", specs->hashbitlen);
return -1;
}
if (hashInitialize(&instance, specs)) {
return -1;
}
hashUpdate(&instance, specs, input, strlen(input));
hashFinal(&instance, specs, buffer);
if (base64) {
if (base64encode(buffer, (specs->hashbitlen+7)/8, display, bufferSize*2)) {
printf("Error while converting to base64.\n");
return -1;
}
}
else {
if (hexencode(buffer, (specs->hashbitlen+7)/8, display, bufferSize*2)) {
printf("Error while converting to hex.\n");
return -1;
}
}
printf("%s ", display);
printf("\"%s\"\n", input);
return 0;
}
void printHelp()
{
printf("Usage: KeccakSum [options] [file names] [options] [file names] ...\n\n");
printf(" --help or -h To display this page\n");
printf(" --base64 Print in base64\n");
printf(" --hex Print in hexadecimal\n");
printf(" --outputbits <numberOfBits> Number of bits as output\n");
printf(" --shake128 Use SHAKE128\n");
printf(" --shake256 Use SHAKE256\n");
printf(" --sha3-224 Use SHA3-224\n");
printf(" --sha3-256 Use SHA3-256\n");
printf(" --sha3-384 Use SHA3-384\n");
printf(" --sha3-512 Use SHA3-512\n");
printf(" --no-suffix Use 0x01 as delimited suffix (pure Keccak)\n");
printf(" --ethereum Equivalent to --sha3-256 --no-suffix\n");
printf(" --kangarootwelve or --k12 Use KangarooTwelve\n");
printf(" --ph128 Use ParallelHash128\n");
printf(" --ph256 Use ParallelHash256\n");
printf(" -B <block size in bytes> ParallelHash's B parameter\n");
printf(" --string <string> String to hash\n");
printf(" <file name> File to hash\n\n");
printf("The options are processed in order.\nBy default, it uses SHAKE128 and base64 display.\n");
printf("With no file names, or when file name is -, it reads standard input.\n");
}
int process(int argc, char* argv[])
{
Specifications specs;
int base64 = 1;
int i, r;
int was_filename = 0;
specs.algorithm = algorithm_Keccak;
specs.rate = 1344;
specs.capacity = 256;
specs.hashbitlen = 264;
specs.delimitedSuffix = 0x1F;
for(i=1; i<argc; i++) {
int outputbits;
if (strcmp("--base64", argv[i]) == 0)
base64 = 1;
else if (strcmp("--hex", argv[i]) == 0)
base64 = 0;
else if ((strcmp("--outputbits", argv[i]) == 0) || (strcmp("-n", argv[i]) == 0)) {
if ((i+1) >= argc) {
printf("Error: missing argument for --outputbits\n");
return -1;
}
outputbits = 0;
if (sscanf(argv[i+1], "%d", &outputbits) && (outputbits > 0) && ((outputbits % 8) == 0)) {
specs.hashbitlen = outputbits;
i++;
}
else {
printf("Error: argument for --outputbits option must be a positive integer multiple of 8\n");
return -1;
}
}
else if (strcmp("--shake128", argv[i]) == 0) {
specs.rate = 1344;
specs.capacity = 256;
specs.hashbitlen = 264;
specs.delimitedSuffix = 0x1F;
base64 = 1;
}
else if (strcmp("--shake256", argv[i]) == 0) {
specs.rate = 1088;
specs.capacity = 512;
specs.hashbitlen = 528;
specs.delimitedSuffix = 0x1F;
base64 = 1;
}
else if (strcmp("--sha3-224", argv[i]) == 0) {
specs.rate = 1152;
specs.capacity = 448;
specs.hashbitlen = 224;
specs.delimitedSuffix = 0x06;
base64 = 0;
}
else if (strcmp("--sha3-256", argv[i]) == 0) {
specs.rate = 1088;
specs.capacity = 512;
specs.hashbitlen = 256;
specs.delimitedSuffix = 0x06;
base64 = 0;
}
else if (strcmp("--sha3-384", argv[i]) == 0) {
specs.rate = 832;
specs.capacity = 768;
specs.hashbitlen = 384;
specs.delimitedSuffix = 0x06;
base64 = 0;
}
else if (strcmp("--sha3-512", argv[i]) == 0) {
specs.rate = 576;
specs.capacity = 1024;
specs.hashbitlen = 512;
specs.delimitedSuffix = 0x06;
base64 = 0;
}
else if (strcmp("--no-suffix", argv[i]) == 0) {
specs.delimitedSuffix = 0x01;
}
else if (strcmp("--ethereum", argv[i]) == 0) {
specs.rate = 1088;
specs.capacity = 512;
specs.hashbitlen = 256;
specs.delimitedSuffix = 0x01;
base64 = 0;
}
else if ((strcmp("--kangarootwelve", argv[i]) == 0) || (strcmp("--k12", argv[i]) == 0)) {
specs.algorithm = algorithm_K12;
specs.hashbitlen = 264;
base64 = 1;
}
else if (strcmp("--ph128", argv[i]) == 0) {
specs.algorithm = algorithm_ParallelHash;
specs.capacity = 256;
specs.hashbitlen = 264;
specs.blockByteLen = 8192;
base64 = 1;
}
else if (strcmp("--ph256", argv[i]) == 0) {
specs.algorithm = algorithm_ParallelHash;
specs.capacity = 512;
specs.hashbitlen = 528;
specs.blockByteLen = 8192;
base64 = 1;
}
else if (strcmp("-B", argv[i]) == 0) {
int blockByteLen;
if ((i+1) >= argc) {
printf("Error: missing argument for -B\n");
return -1;
}
blockByteLen = 0;
if (sscanf(argv[i+1], "%d", &blockByteLen) && (blockByteLen > 0)) {
specs.blockByteLen = blockByteLen;
i++;
}
else {
printf("Error: argument for -B option must be a positive power of 2\n");
return -1;
}
}
else if (strcmp("--string", argv[i]) == 0) {
if ((i+1) >= argc) {
printf("Error: missing argument for --string\n");
return -1;
}
i++;
processString(argv[i], &specs, base64);
}
else if (strcmp("--help", argv[i]) == 0 || strcmp("-h", argv[i]) == 0) {
printHelp();
return 0;
}
else {
if (strlen(argv[i]) > 2) {
if ((argv[i][0] == '-') && (argv[i][1] == '-')) {
printf("Unrecognized command '%s'\n", argv[i]);
return -1;
}
}
was_filename = 1;
r = processFile(argv[i], &specs, base64);
if (r)
return r;
}
}
if (was_filename == 0) {
r = processFile("-", &specs, base64);
if (r)
return r;
}
return 0;
}
int main(int argc, char* argv[])
{
return process(argc, argv);
}