docs: add CipherStash vs HashiCorp Vault comparison - #34
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Adds a Transit-scoped comparison built around the trilemma: no single Vault Transit configuration delivers plaintext-stays-client-side + per-record keys + bulk amortization at once, while ZeroKMS does. Covers Transit's direct vs envelope (datakey) modes, the scattered-read reuse collapse (explained inline), and the trust/capability differences. Performance section is qualitative pending the in-region vault-transit benchmark. Claude-Session: https://claude.ai/code/session_018ag38k33yzmVZhLkVx7CPQ
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Vault's transit/decrypt is batched, so a scattered read unwraps all distinct data keys in one round-trip — it does NOT collapse the way AWS KMS does. The real cost of per-record keys in Vault envelope mode lands on WRITES (datakey has no batch API = one round-trip per record), and the cost of reuse is the security model (shared key, lost per-record audit/revocation). Retitle 'Why the reuse row collapses' -> 'Reading the table' and rewrite accordingly; fix the plaintext and performance notes to match. Claude-Session: https://claude.ai/code/session_018ag38k33yzmVZhLkVx7CPQ
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Superseded by #43, which ports the HashiCorp Vault comparison into the new docs-V2 /compare IA section on the v2 branch. Closing in favor of that PR. |
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Ports the comparison content from PR #31 (AWS KMS merge + ZeroKMS vs HSM) and PR #34 (HashiCorp Vault) out of the legacy content/stack tree and into the new IA `/compare` section: - content/docs/compare/aws-kms.mdx (from #31) - content/docs/compare/zerokms-vs-hsm.mdx (from #31; retains its WIP TODOs) - content/docs/compare/hashicorp-vault.mdx (from #34) - public/images/hsm.png (from #31) Each page gains v2 facets (type: concept, components, audience, reviewBy — the claims-page review date rather than verifiedAgainst). Intra-comparison links are rewritten to `/compare/*`; all other cross-links keep pointing at the still-served legacy `/stack/...` pages (which hold the real content until their sections migrate). The dead `/stack/cipherstash/secrets` link on the Vault page (no secrets page exists in this repo) is delinked. The comparisons overview and nav (index.mdx, meta.json) list the three ported pages. The FHE comparison stays in the legacy tree for now — it is written against EQL v2 (eql_v2_encrypted, BLAKE3) and needs a v3 content refresh before porting, tracked separately in IA.md (/compare/fhe port). Supersedes #31 and #34 for the v2 branch. Claude-Session: https://claude.ai/code/session_01CqDNqLSEEkCi7xAJFq7HJA
coderdan
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Jul 8, 2026
Ports the comparison content from PR #31 (AWS KMS merge + ZeroKMS vs HSM) and PR #34 (HashiCorp Vault) out of the legacy content/stack tree and into the new IA `/compare` section: - content/docs/compare/aws-kms.mdx (from #31) - content/docs/compare/zerokms-vs-hsm.mdx (from #31; retains its WIP TODOs) - content/docs/compare/hashicorp-vault.mdx (from #34) - public/images/hsm.png (from #31) Each page gains v2 facets (type: concept, components, audience, reviewBy — the claims-page review date rather than verifiedAgainst). Intra-comparison links are rewritten to `/compare/*`; all other cross-links keep pointing at the still-served legacy `/stack/...` pages (which hold the real content until their sections migrate). The dead `/stack/cipherstash/secrets` link on the Vault page (no secrets page exists in this repo) is delinked. The comparisons overview and nav (index.mdx, meta.json) list the three ported pages. The FHE comparison stays in the legacy tree for now — it is written against EQL v2 (eql_v2_encrypted, BLAKE3) and needs a v3 content refresh before porting, tracked separately in IA.md (/compare/fhe port). Supersedes #31 and #34 for the v2 branch. Claude-Session: https://claude.ai/code/session_01CqDNqLSEEkCi7xAJFq7HJA
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Part of CIP-3290 (issue stays open until the doc, backend, and in-region run all land)
Adds a new comparison page: CipherStash vs HashiCorp Vault, scoped to Vault's Transit secrets engine (the encryption-as-a-service analog to ZeroKMS).
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https://claude.ai/code/session_018ag38k33yzmVZhLkVx7CPQ