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| 1 | ++++ |
| 2 | +author = "Jason Smith" |
| 3 | +title = "The SBOM Signature 'Storage Tax': Money Talks π°π" |
| 4 | +date = "2026-02-23" |
| 5 | +linkedin = "https://www.linkedin.com/posts/j28smith_finops-eu-cra-activity-7431724688411754496-7VnP" |
| 6 | +image = "img/thirdparty/2026-02-23-sbom-signature-storage-tax.png" |
| 7 | ++++ |
| 8 | + |
| 9 | +Over the last few weeks, I've been deep in the weeds of technical best practices for signing SBOMs. I've discussed |
| 10 | +JSF, JCS, property exclusion, and how we move toward data-aware integrity for better interoperability. π |
| 11 | + |
| 12 | +But beyond the technical elegance of a resilient signature, there is a much simpler driver for this work: The Bottom |
| 13 | +Line. π³ |
| 14 | + |
| 15 | +Currently, most organizations sign SBOMs as binary blobs. This means you are signing the file (the container), not the |
| 16 | +data (the content). If you change a single space or minify the file for storage, the signature breaks. β |
| 17 | + |
| 18 | +This comes with a massive economic cost. πΈ |
| 19 | + |
| 20 | +With regulations like the EU Cyber Resilience Act (CRA) mandating that manufacturers store SBOMs for 10+ years, |
| 21 | +storage is no longer a round-off error in your cloud budget. βοΈπ΅ |
| 22 | + |
| 23 | +The realities of the SBOM binary blob signature storage tax... π |
| 24 | + |
| 25 | +## πΎ Storage Inefficiency |
| 26 | + |
| 27 | +Binary blob signatures prevent you from minifying your data. You are forced to store every space and newline to keep |
| 28 | +the signature valid. |
| 29 | + |
| 30 | +## π The 40% Premium |
| 31 | + |
| 32 | +My initial estimates show that signing "pretty-printed" SBOMs results in ~ 40% higher storage costs (or more) compared |
| 33 | +to data-aware signing. |
| 34 | + |
| 35 | +## β³ 10-Year Compounding |
| 36 | + |
| 37 | +Across thousands of builds and a decade of mandatory retention, that "formatting debt" turns into a significant |
| 38 | +long-term financial liability. |
| 39 | + |
| 40 | +Technical specifications help with interoperability, but money talks. Data-aware signing isn't just about better |
| 41 | +security, it's about avoiding a decade-long storage tax. π¦ |
| 42 | + |
| 43 | +I brought up this point during my last presentation at the [OpenSSF](https://openssf.org/) SBOM Everywhere SIG meeting |
| 44 | +and the shift in the room was noticeable. It's a powerful reminder that while technical specs drive interoperability, |
| 45 | +economic impact drives adoption. π |
| 46 | + |
| 47 | +\#FinOps \#EU \#CRA \#SBOM \#SupplyChainSecurity \#CloudCosts \#OpenSSF \#DevSecOps \#CyberResilienceAct |
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