Skip to content

feat(analyzer): Add source-sink fingerprint (without trace) #103

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Saloed merged 1 commit into from
Apr 22, 2026
Merged

feat(analyzer): Add source-sink fingerprint (without trace) #103

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 18 additions & 3 deletions core/src/main/kotlin/org/opentaint/jvm/sast/sarif/SarifGenerator.kt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -121,9 +121,11 @@ class SarifGenerator(
var partialFingerPrints: Map<String, String>? = null

if (options.generateFingerprint) {
val fingerprint = computeFingerprint(ruleId, sinkLocation, threadFlows)
val fullFingerprint = computeFingerprint(ruleId, sinkLocation, FingerprintKind.FULL_TRACE, threadFlows)
val sourceSinkFingerprint = computeFingerprint(ruleId, sinkLocation, FingerprintKind.SOURCE_SINK, threadFlows)
partialFingerPrints = mapOf(
"vulnerabilityWithTraceHash/v1" to fingerprint
"vulnerabilityWithTraceHash/v1" to fullFingerprint,
"vulnerabilitySourceSinkHash/v1" to sourceSinkFingerprint,
)
}

Expand Down Expand Up @@ -153,17 +155,30 @@ class SarifGenerator(
return result
}

private enum class FingerprintKind {
FULL_TRACE, SOURCE_SINK
}

@OptIn(ExperimentalEncodingApi::class)
private fun computeFingerprint(
ruleId: String,
vulnerabilityLocation: IntermediateLocation,
kind: FingerprintKind,
traces: List<List<IntermediateLocation>>?
): String {
val digest = MessageDigest.getInstance("SHA-256")
digest.update(ruleId.toByteArray())
digest.addLocationFingerprint(vulnerabilityLocation)
traces?.forEach { trace ->
trace.forEach { digest.addLocationFingerprint(it) }
when (kind) {
FingerprintKind.FULL_TRACE -> {
trace.forEach { digest.addLocationFingerprint(it) }
}

FingerprintKind.SOURCE_SINK -> {
trace.firstOrNull()?.let { digest.addLocationFingerprint(it) }
}
}
}
val digestData = digest.digest()
return Base64.encode(digestData)
Expand Down
Loading