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fix: clarify method and signature field descriptions #62

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fix: clarify method and signature field descriptions #62

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fix: clarify method and signature field descriptions
strantalis Dec 5, 2025
1d3d6ab
Apply suggestion from @pflynn-virtru
strantalis Dec 5, 2025
389b129
Clarify method field description in assertion binding
strantalis Dec 5, 2025
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6 changes: 3 additions & 3 deletions schema/OpenTDF/assertion_binding.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,13 +7,13 @@ The `binding` object, nested within an [Assertion Object](./assertion.md), conta
```json
"binding": {
"method": "jws",
"signature": "eyJhbGciOiJSUzI1NiJ9..." // Base64URL encoded JWS string
"signature": "eyJhbGciOiJSUzI1NiJ9..." // JWS string
}
```

## Fields

| Parameter | Type | Description | Required? |
| --------- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- |
| method | String | The cryptographic method used for the signature. jws (JSON Web Signature) is commonly used, implying standard JWS processing rules apply. | Yes |
| signature | String | The Base64URL encoded signature value (e.g., a JWS Compact Serialization string). The signature calculation MUST include the assertion content and sufficient TDF context (like policy or key info hash) to prevent replay. | Yes |
| method | String | Binding format. This version defines only `"jws"` (JSON Web Signature, compact serialization). | Yes |
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| signature | String | JWS compact serialization string binding the assertion to the `scope` target (`tdo` or `payload`), providing integrity and replay protection. | Yes |