Struct JwpIssuedDecoder

pub struct JwpIssuedDecoder { /* private fields */ }

Used for both decoding and verifing a JSON Proof Token representing a JWP in the Issuer form

Implementations

impl JwpIssuedDecoder

pub fn decode( jpt: &str, serialization: SerializationType, ) -> Result<Self, CustomError>

Decode a JSON Proof Token. The token must represent an Issued JWP, otherwise will return an error.

Examples found in repository

examples/jpt.rs (line 60)

fn main() {
    let custom_claims = serde_json::json!({
        "degree": {
            "type": "BachelorDegree",
            "name": "Bachelor of Science and Arts",
            "ciao": [
                {"u1": "value1"},
                {"u2": "value2"}
                ]
            },
        "name": "John Doe"
    });

    let mut jpt_claims = JptClaims::new();
    jpt_claims.set_iss("https://issuer.example".to_owned());
    jpt_claims.set_claim(Some("vc"), custom_claims, true);

    let issued_header = IssuerProtectedHeader::new(ProofAlgorithm::BBS);

    let bbs_jwk = Jwk::generate(KeyPairSubtype::BLS12381G2Sha256).unwrap();
    println!(
        "\nBBS Jwk:\n {:#}",
        serde_json::to_string_pretty(&bbs_jwk).unwrap()
    );

    let issued_jwp = JwpIssuedBuilder::new(issued_header, jpt_claims)
        .build(&bbs_jwk)
        .unwrap();

    let compact_issued_jwp = issued_jwp.encode(SerializationType::COMPACT).unwrap();
    println!("\nCompact Issued JWP: {}", compact_issued_jwp);

    let decoded_issued_jwp =
        JwpIssuedDecoder::decode(&compact_issued_jwp, SerializationType::COMPACT)
            .unwrap()
            .verify(&bbs_jwk.to_public().unwrap())
            .unwrap();

    assert_eq!(issued_jwp, decoded_issued_jwp);

    let mut presentation_header = PresentationProtectedHeader::new(
        decoded_issued_jwp
            .get_issuer_protected_header()
            .alg()
            .into(),
    );
    presentation_header.set_aud(Some("https://recipient.example.com".to_owned()));
    presentation_header.set_nonce(Some("wrmBRkKtXjQ".to_owned()));

    let presented_jwp = JwpPresentedBuilder::new(&decoded_issued_jwp)
        .set_presentation_protected_header(presentation_header)
        .set_undisclosed("vc.degree.name")
        .unwrap()
        .set_undisclosed("vc.degree.ciao[0].u1")
        .unwrap()
        .set_undisclosed("vc.name")
        .unwrap()
        .build(&bbs_jwk.to_public().unwrap())
        .unwrap();

    let compact_presented_jwp = presented_jwp.encode(SerializationType::COMPACT).unwrap();

    println!("\nCompact Presented JWP: {}", compact_presented_jwp);

    let _decoded_presented_jwp =
        JwpPresentedDecoder::decode(&compact_presented_jwp, SerializationType::COMPACT)
            .unwrap()
            .verify(&bbs_jwk.to_public().unwrap())
            .unwrap();
}

pub fn verify(&self, key: &Jwk) -> Result<JwpIssued, CustomError>

Verify the decoded JWP

Examples found in repository

examples/jpt.rs (line 62)

fn main() {
    let custom_claims = serde_json::json!({
        "degree": {
            "type": "BachelorDegree",
            "name": "Bachelor of Science and Arts",
            "ciao": [
                {"u1": "value1"},
                {"u2": "value2"}
                ]
            },
        "name": "John Doe"
    });

    let mut jpt_claims = JptClaims::new();
    jpt_claims.set_iss("https://issuer.example".to_owned());
    jpt_claims.set_claim(Some("vc"), custom_claims, true);

    let issued_header = IssuerProtectedHeader::new(ProofAlgorithm::BBS);

    let bbs_jwk = Jwk::generate(KeyPairSubtype::BLS12381G2Sha256).unwrap();
    println!(
        "\nBBS Jwk:\n {:#}",
        serde_json::to_string_pretty(&bbs_jwk).unwrap()
    );

    let issued_jwp = JwpIssuedBuilder::new(issued_header, jpt_claims)
        .build(&bbs_jwk)
        .unwrap();

    let compact_issued_jwp = issued_jwp.encode(SerializationType::COMPACT).unwrap();
    println!("\nCompact Issued JWP: {}", compact_issued_jwp);

    let decoded_issued_jwp =
        JwpIssuedDecoder::decode(&compact_issued_jwp, SerializationType::COMPACT)
            .unwrap()
            .verify(&bbs_jwk.to_public().unwrap())
            .unwrap();

    assert_eq!(issued_jwp, decoded_issued_jwp);

    let mut presentation_header = PresentationProtectedHeader::new(
        decoded_issued_jwp
            .get_issuer_protected_header()
            .alg()
            .into(),
    );
    presentation_header.set_aud(Some("https://recipient.example.com".to_owned()));
    presentation_header.set_nonce(Some("wrmBRkKtXjQ".to_owned()));

    let presented_jwp = JwpPresentedBuilder::new(&decoded_issued_jwp)
        .set_presentation_protected_header(presentation_header)
        .set_undisclosed("vc.degree.name")
        .unwrap()
        .set_undisclosed("vc.degree.ciao[0].u1")
        .unwrap()
        .set_undisclosed("vc.name")
        .unwrap()
        .build(&bbs_jwk.to_public().unwrap())
        .unwrap();

    let compact_presented_jwp = presented_jwp.encode(SerializationType::COMPACT).unwrap();

    println!("\nCompact Presented JWP: {}", compact_presented_jwp);

    let _decoded_presented_jwp =
        JwpPresentedDecoder::decode(&compact_presented_jwp, SerializationType::COMPACT)
            .unwrap()
            .verify(&bbs_jwk.to_public().unwrap())
            .unwrap();
}

pub fn get_header(&self) -> &IssuerProtectedHeader

pub fn get_payloads(&self) -> &Payloads

Trait Implementations

impl Clone for JwpIssuedDecoder

fn clone(&self) -> JwpIssuedDecoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JwpIssuedDecoder

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JwpIssuedDecoder

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for JwpIssuedDecoder

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for JwpIssuedDecoder

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for JwpIssuedDecoder

impl StructuralPartialEq for JwpIssuedDecoder