Sunscreen · Authentication Profile

Sunscreen Authentication

Authentication

Sunscreen secures its APIs with web3-signature across 1 declared security scheme, as derived from its OpenAPI definitions.

CompanyInfra DevtoolsFully Homomorphic EncryptionCryptographyBlockchainWeb3PrivacyDeveloper ToolsFHE

Methods: web3-signature Schemes: 1 OAuth flows: API key in:

Security Schemes

PrivateKeySigner web3-signature

scheme: ecdsa-secp256k1

Source

Authentication Profile

generated: '2026-07-21'
method: searched
source: https://github.com/Sunscreen-tech/spf-client (README.md) + https://spf-docs.sunscreen.tech/docs/service
summary:
  types: [web3-signature]
  api_key_in: []
  oauth2_flows: []
notes: >-
  The Sunscreen SPF service does not use API keys or OAuth. Requests to the SPF
  testnet REST service are authenticated with an Ethereum-style signature: the
  client signs with a private key (a `PrivateKeySigner` holding a `0x...` key in
  the TypeScript SDK, or `--private-key 0x...` on the Rust CLI). On-chain access
  control (ACL) then governs which addresses may decrypt or run against a given
  ciphertext. A "web2" mode lets an application server hold the signing key on
  behalf of users; a "web3" mode signs directly from the user's wallet.
schemes:
  - name: PrivateKeySigner
    type: web3-signature
    scheme: ecdsa-secp256k1
    key_format: "0x-prefixed Ethereum private key"
    sources: [spf-client README, spf-docs.sunscreen.tech]
    modes:
      - name: web2
        detail: Backend/application server holds the signing key and signs on behalf of users.
      - name: web3
        detail: User's wallet signs requests directly (browser demo shows both modes).
authorization:
  model: on-chain-acl
  detail: Ciphertext access (admin / decrypt / run) is granted per-address and checked via the SPF smart-contract ACL.
docs: https://spf-docs.sunscreen.tech/docs/acl

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