Struct SignerInfo 

pub struct SignerInfo {
    pub version: u64,
    pub sid: SignerIdentifier,
    pub digest_algorithm_oid: Vec<u64>,
    pub digest_algorithm_params: Vec<u8>,
    pub signed_attrs: Vec<Attribute>,
    pub signed_attrs_der: Option<Vec<u8>>,
    pub signature_algorithm_oid: Vec<u64>,
    pub signature_algorithm_params: Vec<u8>,
    pub signature: Vec<u8>,
    pub unsigned_attrs: Vec<Attribute>,
}

One SignerInfo slot inside the SignedData.signerInfos SET.

Round-19 keeps the surface inspection-only — the bytes that would feed signature verification are all surfaced (digest_algorithm OID, signature_algorithm OID, raw signature octet string), but no verify helper is implemented this round.

Fields

version: u64

CMS SignerInfo version — 1 (IAS) or 3 (SKI).

sid: SignerIdentifier

Signer identifier — IAS (v1) or SKI (v3).

digest_algorithm_oid: Vec<u64>

digestAlgorithm OID arcs (e.g. SHA-256 = 2.16.840.1.101.3.4.2.1).

digest_algorithm_params: Vec<u8>

digestAlgorithm raw parameter bytes (typically a NULL or absent — we surface what was on the wire so a caller can distinguish encodings).

signed_attrs: Vec<Attribute>

OPTIONAL signed attributes ([0] IMPLICIT SET OF Attribute). Per RFC 5652 §5.3, when present the signature is computed over the DER encoding of the SignedAttributes SET (with universal SET tag, NOT the implicit [0] tag — RFC 5652 §5.4). Empty vec means “absent”.

signed_attrs_der: Option<Vec<u8>>

Round-19 verification helper — when signed_attrs was present on the wire, this carries the raw DER body of the [0] IMPLICIT SET. The verifier needs to re-encode this with the universal SET tag (0x31) before hashing per RFC 5652 §5.4 — to make that mechanical, we store the body bytes here and the re-tagging happens in the verify dispatch (deferred). None when signed_attrs was absent.

signature_algorithm_oid: Vec<u64>

signatureAlgorithm OID arcs (e.g. RSAES-PKCS1-v1.5 = 1.2.840.113549.1.1.1, ECDSA-with-SHA256 = 1.2.840.10045.4.3.2).

signature_algorithm_params: Vec<u8>

signatureAlgorithm raw parameter bytes.

signature: Vec<u8>

signature OCTET STRING — the actual signature octets the verifier checks against the digest of the signed bytes.

unsigned_attrs: Vec<Attribute>

OPTIONAL unsigned attributes ([1] IMPLICIT SET OF Attribute).

Trait Implementations

impl Clone for SignerInfo

fn clone(&self) -> SignerInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SignerInfo

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

Formats the value using the given formatter.