int KSI_Signature_verify(KSI_Signature *sig, KSI_CTX *ctx) {
return KSI_Signature_verifyAggregated(sig, ctx, 0);
}
int main(int argc, char **argv) {
KSI_CTX *ksi = NULL;
int res = KSI_UNKNOWN_ERROR;
FILE *in = NULL;
FILE *out = NULL;
KSI_DataHasher *hsr = NULL;
KSI_DataHash *hsh = NULL;
KSI_Signature *sign = NULL;
unsigned char *raw = NULL;
unsigned raw_len;
unsigned char buf[1024];
unsigned buf_len;
char *signerIdentity = NULL;
FILE *logFile = NULL;
/* Handle command line parameters */
/* Handle command line parameters */
if (argc != 7) {
fprintf(stderr, "Usage:\n"
" %s <in-data-file> <out-sign-file> <aggregator-uri> <user> <pass> <pub-file url | -> \n", argv[0]);
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
/* Input file */
in = fopen(argv[1], "rb");
if (in == NULL) {
fprintf(stderr, "Unable to open input file '%s'\n", argv[1]);
res = KSI_IO_ERROR;
goto cleanup;
}
/* Create new KSI context for this thread. */
res = KSI_CTX_new(&ksi);
if (res != KSI_OK) {
fprintf(stderr, "Unable to create context.\n");
goto cleanup;
}
logFile = fopen("ksi_sign_aggr.log", "w");
if (logFile == NULL) {
fprintf(stderr, "Unable to open log file.\n");
}
KSI_CTX_setLoggerCallback(ksi, KSI_LOG_StreamLogger, logFile);
KSI_CTX_setLogLevel(ksi, KSI_LOG_DEBUG);
KSI_LOG_info(ksi, "Using KSI version: '%s'", KSI_getVersion());
res = KSI_CTX_setAggregator(ksi, argv[3], argv[4], argv[5]);
if (res != KSI_OK) goto cleanup;
/* Check publications file url. */
if (strncmp("-", argv[6], 1)) {
res = KSI_CTX_setPublicationUrl(ksi, argv[6]);
if (res != KSI_OK) {
fprintf(stderr, "Unable to set publications file url.\n");
goto cleanup;
}
}
/* Create a data hasher using default algorithm. */
res = KSI_DataHasher_open(ksi, KSI_getHashAlgorithmByName("default"), &hsr);
if (res != KSI_OK) {
fprintf(stderr, "Unable to create hasher.\n");
goto cleanup;
}
/* Read the input file and calculate the hash of its contents. */
while (!feof(in)) {
buf_len = (unsigned)fread(buf, 1, sizeof(buf), in);
/* Add next block to the calculation. */
res = KSI_DataHasher_add(hsr, buf, buf_len);
if (res != KSI_OK) {
fprintf(stderr, "Unable to add data to hasher.\n");
goto cleanup;
}
}
/* Close the data hasher and retreive the data hash. */
res = KSI_DataHasher_close(hsr, &hsh);
if (res != KSI_OK) {
fprintf(stderr, "Unable to create hash.\n");
goto cleanup;
}
/* Sign the data hash. */
res = KSI_Signature_createAggregated(ksi, hsh, 4, &sign);
// res = KSI_createSignature(ksi, hsh, &sign);
if (res != KSI_OK) {
fprintf(stderr, "Unable to sign %d.\n", res);
goto cleanup;
}
res = KSI_Signature_verifyAggregated(sign, ksi, 4);
if (res != KSI_OK) {
fprintf(stderr, "Failed to verify signature.\n");
goto cleanup;
}
/* Output the signer id */
res = KSI_Signature_getSignerIdentity(sign, &signerIdentity);
if (res == KSI_OK) {
printf("Signer id: %s\n", signerIdentity);
} else {
fprintf(stderr, "Unable to extract signer identity.\n");
}
/* Serialize the signature. */
res = KSI_Signature_serialize(sign, &raw, &raw_len);
if (res != KSI_OK) {
fprintf(stderr, "Unable to serialize signature.");
goto cleanup;
}
/* Output file */
out = fopen(argv[2], "wb");
if (out == NULL) {
fprintf(stderr, "Unable to open input file '%s'\n", argv[2]);
res = KSI_IO_ERROR;
goto cleanup;
}
/* Write the signature file. */
if (!fwrite(raw, 1, raw_len, out)) {
fprintf(stderr, "Unable to write output file.\n");
res = KSI_IO_ERROR;
goto cleanup;
}
/* Only print message when signature output is not stdout. */
if (out != NULL) {
printf("Signature saved.\n");
}
res = KSI_OK;
cleanup:
if (logFile != NULL) fclose(logFile);
if (res != KSI_OK && ksi != NULL) {
KSI_ERR_statusDump(ksi, stderr);
}
if (in != NULL) fclose(in);
if (out != NULL) fclose(out);
KSI_free(signerIdentity);
KSI_Signature_free(sign);
KSI_DataHash_free(hsh);
KSI_DataHasher_free(hsr);
KSI_free(raw);
KSI_CTX_free(ksi);
return res;
}