Make log payloads opaque pass-through

platform/validator/log_ingest.go

@@ -72,7 +72,7 @@ func ValidateLogBatchIngest(batch domain.LogBatchIngest) error {
 		computed, err := LogEntriesChecksum(batch.Entries)
 		if err != nil {
 			violations = append(violations, "checksum cannot be computed")
-		} else if batch.Checksum != computed && !logLineChecksumMatches(batch) {
+		} else if batch.Checksum != computed {
 			violations = append(violations, "checksum does not match entries")
 		}
 	}
@@ -119,18 +119,6 @@ func LogEntriesChecksum(entries []domain.LogEntry) (string, error) {
 	return "sha256:" + hex.EncodeToString(sum[:]), nil
 }
 
-func logLineChecksumMatches(batch domain.LogBatchIngest) bool {
-	if len(batch.Entries) != 1 {
-		return false
-	}
-	return batch.Checksum == LogLineChecksum(batch.Entries[0].Line)
-}
-
-func LogLineChecksum(value string) string {
-	sum := sha256.Sum256([]byte(value))
-	return "sha256:" + hex.EncodeToString(sum[:])
-}
-
 type logEntryChecksumBody struct {
 	Seq       uint64            `json:"seq"`
 	Timestamp string            `json:"timestamp"`