static void testGetNearestPublicationWithPubTime(CuTest *tc) {
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_Integer *tm = NULL;
KSI_PublicationData *pubDat = NULL;
KSI_Integer *pubTm = NULL;
res = KSI_PublicationsFile_fromFile(ctx, getFullResourcePath(TEST_PUBLICATIONS_FILE), &pubFile);
CuAssert(tc, "Unable to read publications file", res == KSI_OK && pubFile != NULL);
/* With time set to 0, the result should be the first publication record in the publications file. */
res = KSI_Integer_new(ctx, 1208217600, &tm);
CuAssert(tc, "Unable to create integer", res == KSI_OK && tm != NULL);
res = KSI_PublicationsFile_getNearestPublication(pubFile, tm, &pubRec);
CuAssert(tc, "Unable to find nearest publication", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pubDat);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pubDat != NULL);
res = KSI_PublicationData_getTime(pubDat, &pubTm);
CuAssert(tc, "Unable to get publication time", res == KSI_OK && pubTm != NULL);
CuAssert(tc, "Unexpected publication time", KSI_Integer_equalsUInt(pubTm, 1208217600));
KSI_PublicationRecord_free(pubRec);
KSI_PublicationsFile_free(pubFile);
KSI_Integer_free(tm);
}
static void testGetLatestPublicationOfLast(CuTest *tc) {
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_Integer *tm = NULL;
KSI_PublicationData *pubDat = NULL;
KSI_Integer *pubTm = NULL;
res = KSI_PublicationsFile_fromFile(ctx, getFullResourcePath(TEST_PUBLICATIONS_FILE), &pubFile);
CuAssert(tc, "Unable to read publications file", res == KSI_OK && pubFile != NULL);
res = KSI_Integer_new(ctx, 1405382400, &tm);
CuAssert(tc, "Unable to create integer", res == KSI_OK && tm != NULL);
res = KSI_PublicationsFile_getLatestPublication(pubFile, tm, &pubRec);
CuAssert(tc, "Unable to find nearest publication", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pubDat);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pubDat != NULL);
res = KSI_PublicationData_getTime(pubDat, &pubTm);
CuAssert(tc, "Unable to get publication time", res == KSI_OK && pubTm != NULL);
CuAssert(tc, "Unexpected publication time (this test might fail, if you have recently updated the publications file in the tests)", KSI_Integer_equalsUInt(pubTm, 1405382400));
KSI_PublicationsFile_free(pubFile);
KSI_Integer_free(tm);
}
int KSI_PublicationsFile_getPublicationDataByTime(const KSI_PublicationsFile *trust, const KSI_Integer *pubTime, KSI_PublicationRecord **pubRec) {
int res;
size_t i;
KSI_PublicationRecord *result = NULL;
if (trust == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
KSI_ERR_clearErrors(trust->ctx);
if (pubTime == NULL || pubRec == NULL) {
KSI_pushError(trust->ctx, res = KSI_INVALID_ARGUMENT, NULL);
goto cleanup;
}
for (i = 0; i < KSI_PublicationRecordList_length(trust->publications); i++) {
KSI_PublicationRecord *pr = NULL;
KSI_PublicationData *pd = NULL;
KSI_Integer *tm = NULL;
res = KSI_PublicationRecordList_elementAt(trust->publications, i, &pr);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
res = KSI_PublicationRecord_getPublishedData(pr, &pd);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
res = KSI_PublicationData_getTime(pd, &tm);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
if (KSI_Integer_equals(pubTime, tm)) {
result = pr;
break;
}
KSI_nofree(tm);
KSI_nofree(pd);
}
*pubRec = result;
res = KSI_OK;
cleanup:
KSI_nofree(result);
return res;
}
static int verifyCalendarChainWithPublication(KSI_Signature *sig){
int res = KSI_UNKNOWN_ERROR;
KSI_CalendarHashChain *calChain = NULL;
KSI_Integer *pubTime = NULL;
KSI_DataHash *rootHash = NULL;
KSI_PublicationRecord *sigPubRec = NULL;
KSI_PublicationData *sigPubData = NULL;
KSI_DataHash *publishedHash = NULL;
KSI_Integer *publishedTime = NULL;
KSI_VerificationStep step = KSI_VERIFY_CALCHAIN_WITH_PUBLICATION;
KSI_VerificationResult *info = &sig->verificationResult;
if (sig->publication == NULL) {
res = KSI_OK;
goto cleanup;
}
KSI_LOG_debug(sig->ctx, "Verifying calendar chain with publication.");
calChain = sig->calendarChain;
res = KSI_CalendarHashChain_getPublicationTime(calChain, &pubTime);
if (res != KSI_OK) goto cleanup;
res = KSI_CalendarHashChain_aggregate(calChain, &rootHash);
if (res != KSI_OK) goto cleanup;
sigPubRec = sig->publication;
res = KSI_PublicationRecord_getPublishedData(sigPubRec, &sigPubData);
if (res != KSI_OK) goto cleanup;
res = KSI_PublicationData_getImprint(sigPubData, &publishedHash);
if (res != KSI_OK) goto cleanup;
res = KSI_PublicationData_getTime(sigPubData, &publishedTime);
if (res != KSI_OK) goto cleanup;
if (!KSI_DataHash_equals(rootHash, publishedHash)){
KSI_LOG_logDataHash(sig->ctx, KSI_LOG_DEBUG, "Calendar root hash", rootHash);
KSI_LOG_logDataHash(sig->ctx, KSI_LOG_DEBUG, "Published hash", publishedHash);
res = KSI_VerificationResult_addFailure(info, step, "Published hash and calendar hash chain root hash mismatch.");
goto cleanup;
}
if (!KSI_Integer_equals(pubTime, publishedTime)){
KSI_LOG_debug(sig->ctx, "Calendar hash chain publication time: %i.", KSI_Integer_getUInt64(pubTime));
KSI_LOG_debug(sig->ctx, "Published publication time: %i.", KSI_Integer_getUInt64(publishedTime));
res = KSI_VerificationResult_addFailure(info, step, "Calendar hash chain publication time mismatch.");
goto cleanup;
}
res = KSI_VerificationResult_addSuccess(info, step, "Calendar chain verified with publication.");
cleanup:
KSI_DataHash_free(rootHash);
return res;
}
static void testFindPublicationByPubStr(CuTest *tc) {
static const char publication[] = "AAAAAA-CTJR3I-AANBWU-RY76YF-7TH2M5-KGEZVA-WLLRGD-3GKYBG-AM5WWV-4MCLSP-XPRDDI-UFMHBA";
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_PublicationData *pub = NULL;
KSI_DataHash *pubHsh = NULL;
KSI_Integer *pubTime = NULL;
KSI_DataHash *expHsh = NULL;
unsigned char buf[0xff];
size_t len;
KSI_CTX *ctx = NULL;
res = KSITest_CTX_clone(&ctx);
CuAssert(tc, "Unable to create KSI context.", res == KSI_OK && ctx != NULL);
res = KSITest_setDefaultPubfileAndVerInfo(ctx);
CuAssert(tc, "Unable to set default values to context.", res == KSI_OK);
KSI_ERR_clearErrors(ctx);
res = KSI_CTX_setPublicationUrl(ctx, getFullResourcePathUri(TEST_PUBLICATIONS_FILE));
CuAssert(tc, "Unable to set pubfile URI.", res == KSI_OK);
res = KSI_receivePublicationsFile(ctx, &pubFile);
CuAssert(tc, "Unable to get publications file.", res == KSI_OK && pubFile != NULL);
res = KSI_verifyPublicationsFile(ctx, pubFile);
CuAssert(tc, "Unable to verify publications file.", res == KSI_OK);
res = KSI_PublicationsFile_getPublicationDataByPublicationString(pubFile, publication, &pubRec);
CuAssert(tc, "Unable to get publication record by publication string.", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pub);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pub != NULL);
res = KSI_PublicationData_getImprint(pub, &pubHsh);
CuAssert(tc, "Unable to get published hash", res == KSI_OK && pubHsh != NULL);
res = KSI_PublicationData_getTime(pub, &pubTime);
CuAssert(tc, "Unable to get publication time.", res == KSI_OK && pubTime != NULL);
KSITest_decodeHexStr("01a1b5238ffb05fccfa67546266a0b2d7130f6656026033b6b578c12e4fbbe231a", buf, sizeof(buf), &len);
res = KSI_DataHash_fromImprint(ctx, buf, len, &expHsh);
CuAssert(tc, "Unable to get data hash from imprint.", res == KSI_OK && expHsh != NULL);
CuAssert(tc, "Publication hash mismatch.", KSI_DataHash_equals(expHsh, pubHsh));
CuAssert(tc, "Publication time mismatch", KSI_Integer_equalsUInt(pubTime, 1397520000));
KSI_DataHash_free(expHsh);
KSI_PublicationsFile_free(pubFile);
KSI_CTX_free(ctx);
}
static int verifyCalendarChain(KSI_Signature *sig) {
int res = KSI_UNKNOWN_ERROR;
KSI_DataHash *rootHash = NULL;
KSI_Integer *calendarPubTm = NULL;
KSI_PublicationData *pubData = NULL;
KSI_DataHash *pubHash = NULL;
KSI_Integer *pubTime = NULL;
KSI_VerificationStep step = KSI_VERIFY_CALCHAIN_WITH_CALAUTHREC;
KSI_VerificationResult *info = &sig->verificationResult;
if (sig->calendarAuthRec == NULL) {
res = KSI_OK;
goto cleanup;
}
KSI_LOG_info(sig->ctx, "Verifying calendar hash chain.");
/* Calculate the root hash value. */
res = KSI_CalendarHashChain_aggregate(sig->calendarChain, &rootHash);
if (res != KSI_OK) goto cleanup;
/* Get the publication time from calendar hash chain. */
res = KSI_CalendarHashChain_getPublicationTime(sig->calendarChain, &calendarPubTm);
if (res != KSI_OK) goto cleanup;
/* Get publication data. */
res = KSI_CalendarAuthRec_getPublishedData(sig->calendarAuthRec, &pubData);
if (res != KSI_OK) goto cleanup;
/* Get published hash value. */
res = KSI_PublicationData_getImprint(pubData, &pubHash);
if (res != KSI_OK) goto cleanup;
/* Get publication time. */
res = KSI_PublicationData_getTime(pubData, &pubTime);
if (res != KSI_OK) goto cleanup;
if (KSI_Integer_equals(calendarPubTm, pubTime) && KSI_DataHash_equals(rootHash, pubHash)) {
res = KSI_VerificationResult_addSuccess(info, step, "Calendar chain and authentication record match.");
} else {
res = KSI_VerificationResult_addFailure(info, step, "Calendar chain and authentication record mismatch.");
}
if (res != KSI_OK) goto cleanup;
res = KSI_OK;
cleanup:
KSI_DataHash_free(rootHash);
return res;
}
static void testFindPublicationByTime(CuTest *tc) {
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_PublicationData *pub = NULL;
KSI_DataHash *pubHsh = NULL;
KSI_Integer *pubTime = NULL;
KSI_DataHash *expHsh = NULL;
KSI_LIST(KSI_Utf8String) *pubRefList = NULL;
unsigned char buf[0xff];
unsigned len;
KSI_ERR_clearErrors(ctx);
res = KSI_receivePublicationsFile(ctx, &pubFile);
CuAssert(tc, "Unable to get publications file.", res == KSI_OK && pubFile != NULL);
res = KSI_Integer_new(ctx, 1397520000, &pubTime);
CuAssert(tc, "Unable to create ksi integer object.", res == KSI_OK && pubTime != NULL);
res = KSI_PublicationsFile_getPublicationDataByTime(pubFile, pubTime, &pubRec);
CuAssert(tc, "Unable to get publication record by publication date.", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pub);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pub != NULL);
res = KSI_PublicationData_getImprint(pub, &pubHsh);
CuAssert(tc, "Unable to get published hash", res == KSI_OK && pubHsh != NULL);
KSI_Integer_free(pubTime);
pubTime = NULL;
res = KSI_PublicationData_getTime(pub, &pubTime);
CuAssert(tc, "Unable to get publication time.", res == KSI_OK && pubTime != NULL);
KSITest_decodeHexStr("01a1b5238ffb05fccfa67546266a0b2d7130f6656026033b6b578c12e4fbbe231a", buf, sizeof(buf), &len);
res = KSI_DataHash_fromImprint(ctx, buf, len, &expHsh);
CuAssert(tc, "Unable to get datahash from imprint", res == KSI_OK && expHsh != NULL);
CuAssert(tc, "Publication hash mismatch.", KSI_DataHash_equals(expHsh, pubHsh));
CuAssert(tc, "Publication time mismatch", KSI_Integer_equalsUInt(pubTime, 1397520000));
res = KSI_PublicationRecord_getPublicationRefList(pubRec, &pubRefList);
CuAssert(tc, "Unable to get publications ref list", res == KSI_OK && pubRefList != NULL);
KSI_DataHash_free(expHsh);
}
static void testFindPublicationByPubStr(CuTest *tc) {
static const char publication[] = "AAAAAA-CTJR3I-AANBWU-RY76YF-7TH2M5-KGEZVA-WLLRGD-3GKYBG-AM5WWV-4MCLSP-XPRDDI-UFMHBA";
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_PublicationData *pub = NULL;
KSI_DataHash *pubHsh = NULL;
KSI_Integer *pubTime = NULL;
KSI_DataHash *expHsh = NULL;
unsigned char buf[0xff];
unsigned len;
KSI_ERR_clearErrors(ctx);
res = KSI_receivePublicationsFile(ctx, &pubFile);
CuAssert(tc, "Unable to get publications file.", res == KSI_OK && pubFile != NULL);
res = KSI_PublicationsFile_getPublicationDataByPublicationString(pubFile, publication, &pubRec);
CuAssert(tc, "Unable to get publication record by publication string.", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pub);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pub != NULL);
res = KSI_PublicationData_getImprint(pub, &pubHsh);
CuAssert(tc, "Unable to get published hash", res == KSI_OK && pubHsh != NULL);
res = KSI_PublicationData_getTime(pub, &pubTime);
CuAssert(tc, "Unable to get publication time.", res == KSI_OK && pubTime != NULL);
KSITest_decodeHexStr("01a1b5238ffb05fccfa67546266a0b2d7130f6656026033b6b578c12e4fbbe231a", buf, sizeof(buf), &len);
res = KSI_DataHash_fromImprint(ctx, buf, len, &expHsh);
CuAssert(tc, "Unable to get data hash from imprint.", res == KSI_OK && expHsh != NULL);
CuAssert(tc, "Publication hash mismatch.", KSI_DataHash_equals(expHsh, pubHsh));
CuAssert(tc, "Publication time mismatch", KSI_Integer_equalsUInt(pubTime, 1397520000));
KSI_DataHash_free(expHsh);
}
int KSI_PublicationsFile_getLatestPublication(const KSI_PublicationsFile *trust, const KSI_Integer *pubTime, KSI_PublicationRecord **pubRec) {
int res;
size_t i;
KSI_PublicationRecord *result = NULL;
KSI_Integer *result_tm = NULL;
if (trust == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
KSI_ERR_clearErrors(trust->ctx);
if (pubRec == NULL) {
KSI_pushError(trust->ctx, res = KSI_INVALID_ARGUMENT, NULL);
goto cleanup;
}
for (i = 0; i < KSI_PublicationRecordList_length(trust->publications); i++) {
KSI_PublicationRecord *pr = NULL;
KSI_PublicationData *pd = NULL;
KSI_Integer *tm = NULL;
res = KSI_PublicationRecordList_elementAt(trust->publications, i, &pr);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
res = KSI_PublicationRecord_getPublishedData(pr, &pd);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
res = KSI_PublicationData_getTime(pd, &tm);
if (res != KSI_OK) {
KSI_pushError(trust->ctx, res, NULL);
goto cleanup;
}
/* Check if current publication time is after given time. */
if (pubTime == NULL || KSI_Integer_compare(pubTime, tm) <= 0) {
/* Check if current publication time is after the latest so far. */
if (result_tm == NULL || KSI_Integer_compare(result_tm, tm) <= 0) {
result = pr;
result_tm = tm;
}
}
KSI_nofree(tm);
KSI_nofree(pd);
}
*pubRec = result;
res = KSI_OK;
cleanup:
KSI_nofree(result);
KSI_nofree(result_tm);
return res;
}
int KSI_PublicationsFile_getPublicationDataByPublicationString(const KSI_PublicationsFile *pubFile, const char *pubString, KSI_PublicationRecord **pubRec) {
int res;
KSI_PublicationData *findPubData = NULL;
KSI_DataHash *findImprint = NULL;
KSI_Integer *findTime = NULL;
KSI_PublicationRecord *tmpPubRec = NULL;
KSI_PublicationData *tmpPubData = NULL;
KSI_DataHash *tmpImprint = NULL;
if (pubFile == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
KSI_ERR_clearErrors(pubFile->ctx);
if (pubString == NULL || pubRec == NULL) {
KSI_pushError(pubFile->ctx, res = KSI_INVALID_ARGUMENT, NULL);
goto cleanup;
}
/* Decode the publication string. */
res = KSI_PublicationData_fromBase32(pubFile->ctx, pubString, &findPubData);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
/* Extract the expected imprint. */
res = KSI_PublicationData_getImprint(findPubData, &findImprint);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
/* Extract the expected publication time. */
res = KSI_PublicationData_getTime(findPubData, &findTime);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
/* Find the publication using the publication time. */
res = KSI_PublicationsFile_getPublicationDataByTime(pubFile, findTime, &tmpPubRec);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
if (tmpPubRec != NULL) {
/* Extract published data. */
res = KSI_PublicationRecord_getPublishedData(tmpPubRec, &tmpPubData);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
/* Extract the time. */
res = KSI_PublicationData_getImprint(tmpPubData, &tmpImprint);
if (res != KSI_OK) {
KSI_pushError(pubFile->ctx, res, NULL);
goto cleanup;
}
if (!KSI_DataHash_equals(findImprint, tmpImprint)) {
KSI_pushError(pubFile->ctx, res = KSI_INVALID_PUBLICATION, NULL);
goto cleanup;
}
}
*pubRec = tmpPubRec;
res = KSI_OK;
cleanup:
KSI_PublicationData_free(findPubData);
KSI_nofree(findImprint);
KSI_nofree(findTime);
KSI_nofree(tmpPubRec);
KSI_nofree(tmpPubData);
KSI_nofree(tmpImprint);
return res;
}
static void testFindPublicationByTime(CuTest *tc) {
int res;
KSI_PublicationsFile *pubFile = NULL;
KSI_PublicationRecord *pubRec = NULL;
KSI_PublicationData *pub = NULL;
KSI_DataHash *pubHsh = NULL;
KSI_Integer *pubTime = NULL;
KSI_DataHash *expHsh = NULL;
KSI_LIST(KSI_Utf8String) *pubRefList = NULL;
unsigned char buf[0xff];
size_t len;
KSI_CTX *ctx = NULL;
res = KSITest_CTX_clone(&ctx);
CuAssert(tc, "Unable to create KSI context.", res == KSI_OK && ctx != NULL);
res = KSITest_setDefaultPubfileAndVerInfo(ctx);
CuAssert(tc, "Unable to set default values to context.", res == KSI_OK);
KSI_ERR_clearErrors(ctx);
res = KSI_CTX_setPublicationUrl(ctx, getFullResourcePathUri(TEST_PUBLICATIONS_FILE));
CuAssert(tc, "Unable to set pubfile URI.", res == KSI_OK);
res = KSI_receivePublicationsFile(ctx, &pubFile);
CuAssert(tc, "Unable to get publications file.", res == KSI_OK && pubFile != NULL);
res = KSI_verifyPublicationsFile(ctx, pubFile);
CuAssert(tc, "Unable to verify publications file.", res == KSI_OK);
res = KSI_Integer_new(ctx, 1397520000, &pubTime);
CuAssert(tc, "Unable to create ksi integer object.", res == KSI_OK && pubTime != NULL);
res = KSI_PublicationsFile_getPublicationDataByTime(pubFile, pubTime, &pubRec);
CuAssert(tc, "Unable to get publication record by publication date.", res == KSI_OK && pubRec != NULL);
res = KSI_PublicationRecord_getPublishedData(pubRec, &pub);
CuAssert(tc, "Unable to get published data", res == KSI_OK && pub != NULL);
res = KSI_PublicationData_getImprint(pub, &pubHsh);
CuAssert(tc, "Unable to get published hash", res == KSI_OK && pubHsh != NULL);
KSI_Integer_free(pubTime);
pubTime = NULL;
res = KSI_PublicationData_getTime(pub, &pubTime);
CuAssert(tc, "Unable to get publication time.", res == KSI_OK && pubTime != NULL);
KSITest_decodeHexStr("01a1b5238ffb05fccfa67546266a0b2d7130f6656026033b6b578c12e4fbbe231a", buf, sizeof(buf), &len);
res = KSI_DataHash_fromImprint(ctx, buf, len, &expHsh);
CuAssert(tc, "Unable to get datahash from imprint", res == KSI_OK && expHsh != NULL);
CuAssert(tc, "Publication hash mismatch.", KSI_DataHash_equals(expHsh, pubHsh));
CuAssert(tc, "Publication time mismatch", KSI_Integer_equalsUInt(pubTime, 1397520000));
res = KSI_PublicationRecord_getPublicationRefList(pubRec, &pubRefList);
CuAssert(tc, "Unable to get publications ref list", res == KSI_OK && pubRefList != NULL);
KSI_DataHash_free(expHsh);
KSI_PublicationsFile_free(pubFile);
KSI_CTX_free(ctx);
}
/**
* This function extends the signature to the given publication.
* \param[in] sig Initial signature.
* \param[in] pubStr Null-terminated c string of the publication.
* \param[out] ext Pointer to the receiving pointer to the extended signature.
* \return Returns KSI_OK if successful.
*/
static int extendToPublication(KSI_Signature *sig, const char *pubStr, KSI_Signature **ext) {
int res = KSI_UNKNOWN_ERROR;
/* Only the published data. */
KSI_PublicationData *pubData = NULL;
/* Published data and the references to the actual publications. */
KSI_PublicationRecord *pubRec = NULL;
/* Publication time. */
KSI_Integer *pubTime = NULL;
/* Signature signing time. */
KSI_Integer *signTime = NULL;
/* Parse the publications string. */
res = KSI_PublicationData_fromBase32(ksi, pubStr, &pubData);
if (res != KSI_OK) {
fprintf(stderr, "Invalid publication: '%s'\n", pubStr);
goto cleanup;
}
/* Verify the publication is newer than the signature. */
res = KSI_Signature_getSigningTime(sig, &signTime);
if (res != KSI_OK) goto cleanup;
res = KSI_PublicationData_getTime(pubData, &pubTime);
if (res != KSI_OK) goto cleanup;
if (KSI_Integer_compare(signTime, pubTime) > 0) {
fprintf(stderr, "Signature created after publication.\n");
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
/* Create a publication record. */
res = KSI_PublicationRecord_new(ksi, &pubRec);
if (res != KSI_OK) goto cleanup;
/* Set the published data value. */
res = KSI_PublicationRecord_setPublishedData(pubRec, pubData);
if (res != KSI_OK) goto cleanup;
/* The pointer will be free by KSI_PublicatioinRecord_free. */
pubData = NULL;
/* NB! If the user wants to store the extended signature, some publication references should
* be added to the publication reference. As we are going to discard the signature after
* verification, the references are not important. */
/* Extend the signature to the publication. */
res = KSI_Signature_extend(sig, ksi, pubRec, ext);
if (res != KSI_OK) {
fprintf(stderr, "Unable to to extend the signature to the given publication: '%s'\n", pubStr);
goto cleanup;
}
res = KSI_OK;
cleanup:
/* We can cleanup the values. */
KSI_PublicationData_free(pubData);
KSI_PublicationRecord_free(pubRec);
return res;
}
static int verifyOnline(KSI_CTX *ctx, KSI_Signature *sig) {
int res = KSI_UNKNOWN_ERROR;
KSI_ExtendReq *req = NULL;
KSI_Integer *start = NULL;
KSI_Integer *end = NULL;
KSI_RequestHandle *handle = NULL;
KSI_DataHash *extHash = NULL;
KSI_DataHash *calHash = NULL;
KSI_ExtendResp *resp = NULL;
KSI_Integer *status = NULL;
KSI_CalendarHashChain *calChain = NULL;
KSI_DataHash *rootHash = NULL;
KSI_DataHash *pubHash = NULL;
KSI_VerificationStep step = KSI_VERIFY_CALCHAIN_ONLINE;
KSI_VerificationResult *info = &sig->verificationResult;
KSI_LOG_info(sig->ctx, "Verifying signature online.");
/* Extract start time */
res = KSI_CalendarHashChain_getAggregationTime(sig->calendarChain, &start);
if (res != KSI_OK) goto cleanup;
/* Clone the start time object */
KSI_Integer_ref(start);
if (sig->verificationResult.useUserPublication) {
/* Extract end time. */
res = KSI_PublicationData_getTime(sig->verificationResult.userPublication, &end);
if (res != KSI_OK) goto cleanup;
}
res = KSI_createExtendRequest(sig->ctx, start, end, &req);
if (res != KSI_OK) goto cleanup;
res = KSI_sendExtendRequest(ctx, req, &handle);
if (res != KSI_OK) goto cleanup;
res = KSI_RequestHandle_perform(handle);
if (res != KSI_OK) {
KSI_pushError(ctx,res, NULL);
goto cleanup;
}
res = KSI_RequestHandle_getExtendResponse(handle, &resp);
if (res != KSI_OK) goto cleanup;
/* Verify the correctness of the response. */
res = KSI_ExtendResp_verifyWithRequest(resp, req);
if (res != KSI_OK) {
KSI_pushError(ctx, res, NULL);
goto cleanup;
}
res = KSI_ExtendResp_getStatus(resp, &status);
if (res != KSI_OK) goto cleanup;
/* Verify status. */
if (status != NULL && !KSI_Integer_equalsUInt(status, 0)) {
KSI_Utf8String *respErr = NULL;
char errm[1024];
res = KSI_ExtendResp_getErrorMsg(resp, &respErr);
if (res != KSI_OK) goto cleanup;
KSI_snprintf(errm, sizeof(errm), "Extend failure from server: '%s'", KSI_Utf8String_cstr(respErr));
res = KSI_VerificationResult_addFailure(info, step, errm);
goto cleanup;
}
res = KSI_ExtendResp_getCalendarHashChain(resp, &calChain);
if (res != KSI_OK) goto cleanup;
res = KSI_CalendarHashChain_getInputHash(calChain, &extHash);
if (res != KSI_OK) goto cleanup;
res = KSI_CalendarHashChain_getInputHash(sig->calendarChain, &calHash);
if (res != KSI_OK) goto cleanup;
if (!KSI_DataHash_equals(extHash, calHash)) {
res = KSI_VerificationResult_addFailure(info, step, "Extender returned different input hash for calendar hash chain.");
goto cleanup;
}
if (sig->verificationResult.useUserPublication) {
res = KSI_CalendarHashChain_aggregate(calChain, &rootHash);
if (res != KSI_OK) goto cleanup;
if (!KSI_DataHash_equals(rootHash, pubHash)) {
res = KSI_VerificationResult_addFailure(info, step, "External publication imprint mismatch.");
goto cleanup;
}
}
res = KSI_VerificationResult_addSuccess(info, step, "Verified online.");
cleanup:
KSI_Integer_free(start);
KSI_ExtendReq_free(req);
KSI_RequestHandle_free(handle);
KSI_ExtendResp_free(resp);
return res;
}
static int verifyPublicationWithPubString(KSI_CTX *ctx, KSI_Signature *sig) {
int res = KSI_UNKNOWN_ERROR;
KSI_VerificationStep step = KSI_VERIFY_PUBLICATION_WITH_PUBSTRING;
KSI_VerificationResult *info = &sig->verificationResult;
KSI_Integer *time1 = NULL;
KSI_Integer *time2 = NULL;
KSI_DataHash *hsh1 = NULL;
KSI_DataHash *hsh2 = NULL;
if (sig->publication == NULL || sig->verificationResult.useUserPublication == false) {
res = KSI_OK;
goto cleanup;
}
KSI_LOG_info(ctx, "Verifying publication with publication string");
if (sig->verificationResult.userPublication == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
res = KSI_PublicationData_getTime(sig->verificationResult.userPublication, &time1);
if (res != KSI_OK) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
res = KSI_PublicationData_getImprint(sig->verificationResult.userPublication, &hsh1);
if (res != KSI_OK) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
res = KSI_PublicationData_getTime(sig->publication->publishedData, &time2);
if (res != KSI_OK) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
res = KSI_PublicationData_getImprint(sig->publication->publishedData, &hsh2);
if (res != KSI_OK) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
if (KSI_Integer_compare(time1, time2) != 0) {
KSI_LOG_debug(ctx, "Publication time from publication record:", time2);
KSI_LOG_debug(ctx, "Publication time from user publication :", time1);
res = KSI_VerificationResult_addFailure(info, step, "Publication not trusted.");
goto cleanup;
}
if (KSI_DataHash_equals(hsh1, hsh2) != 1) {
KSI_LOG_logDataHash(ctx, KSI_LOG_DEBUG, "Root hash from publication record:", hsh2);
KSI_LOG_logDataHash(ctx, KSI_LOG_DEBUG, "Root hash from user publication:", hsh1);
res = KSI_VerificationResult_addFailure(info, step, "Publication not trusted.");
goto cleanup;
}
res = KSI_VerificationResult_addSuccess(info, step, "Publication trusted.");
cleanup:
return res;
}
