Struct DocumentProof 

pub struct DocumentProof {
    pub proof_type: String,
    pub created: String,
    pub verification_method: String,
    pub proof_purpose: String,
    pub proof_value: String,
}

An Ed25519Signature2020 document proof.

See OAS Specification §5.5 for the complete format.

Fields

proof_type: String

Fixed: "Ed25519Signature2020"

created: String

ISO 8601 timestamp of when the proof was created.

verification_method: String

Reference to the verification method used (e.g., did:oas:ns:hmr:a#key-1).

proof_purpose: String

The purpose of this proof (e.g., "assertionMethod").

proof_value: String

The multibase-encoded Ed25519 signature (base58btc with z prefix).

Implementations

impl DocumentProof

pub fn generate( document_json: &Value, keypair: &OasKeyPair, verification_method_id: &str, created: &str, ) -> Result<Self, DocumentError>

Generates a document proof by signing the canonical document bytes.

Implements OAS Specification §5.5:

1. Canonicalize the document (without proof) via JCS
2. Sign the canonical bytes with the signing key
3. Encode as multibase base58btc

Arguments

• document_json - The document as a JSON value (proof field MUST be absent/null).
• keypair - The signing keypair.
• verification_method_id - Full ID of the verification method (e.g., did:oas:ns:hmr:a#key-1).
• created - ISO 8601 timestamp for the proof.

Returns

A DocumentProof containing the signature.

Errors

Returns DocumentError::ProofGenerationFailed if canonicalization or signing fails.

pub fn verify( &self, document_json: &Value, public_key_bytes: &[u8], ) -> Result<(), DocumentError>

Verifies this document proof against the canonical document bytes.

Implements OAS Specification §5.5 verification:

1. Canonicalize the document (without proof) via JCS
2. Decode the proof value from multibase
3. Verify the Ed25519 signature

Arguments

• document_json - The document as a JSON value (proof field MUST be absent/null).
• public_key_bytes - The 32-byte Ed25519 public key.

Returns

Ok(()) if the proof is valid.

Errors

Returns DocumentError::ProofVerificationFailed if verification fails.

Trait Implementations

impl Clone for DocumentProof

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DocumentProof

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DocumentProof

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DocumentProof

impl PartialEq for DocumentProof

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for DocumentProof

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DocumentProof