Enum cryptographic_message_syntax::asn1::rfc5652::SignerIdentifier

pub enum SignerIdentifier {
    IssuerAndSerialNumber(IssuerAndSerialNumber),
    SubjectKeyIdentifier(OctetString),
}

Identifies the signer.

SignerIdentifier ::= CHOICE {
  issuerAndSerialNumber IssuerAndSerialNumber,
  subjectKeyIdentifier [0] SubjectKeyIdentifier }

Variants

IssuerAndSerialNumber(IssuerAndSerialNumber)

SubjectKeyIdentifier(OctetString)

Implementations

impl SignerIdentifier

pub fn take_from<S: Source>(
    cons: &mut Constructed<'_, S>
) -> Result<Self, DecodeError<S::Error>>

Examples found in repository

src/asn1/rfc5652.rs (line 395)

    pub fn from_sequence<S: Source>(
        cons: &mut Constructed<S>,
    ) -> Result<Self, DecodeError<S::Error>> {
        let version = CmsVersion::take_from(cons)?;
        let sid = SignerIdentifier::take_from(cons)?;
        let digest_algorithm = DigestAlgorithmIdentifier::take_from(cons)?;
        let signed_attributes = cons.take_opt_constructed_if(Tag::CTX_0, |cons| {
            // RFC 5652 Section 5.3: SignedAttributes MUST be DER encoded, even if the
            // rest of the structure is BER encoded. So buffer all data so we can
            // feed into a new decoder.
            let der = cons.capture_all()?;

            // But wait there's more! The raw data constituting the signed
            // attributes is also digested and used for content/signature
            // verification. Because our DER serialization may not roundtrip
            // losslessly, we stash away a copy of these bytes so they may be
            // referenced as part of verification.
            let der_data = der.as_slice().to_vec();

            Ok((
                Constructed::decode(der.as_slice(), bcder::Mode::Der, |cons| {
                    SignedAttributes::take_from_set(cons)
                })
                .map_err(|e| e.convert())?,
                der_data,
            ))
        })?;

        let (signed_attributes, signed_attributes_data) = if let Some((x, y)) = signed_attributes {
            (Some(x), Some(y))
        } else {
            (None, None)
        };

        let signature_algorithm = SignatureAlgorithmIdentifier::take_from(cons)?;
        let signature = SignatureValue::take_from(cons)?;
        let unsigned_attributes = cons
            .take_opt_constructed_if(Tag::CTX_1, |cons| UnsignedAttributes::take_from_set(cons))?;

        Ok(Self {
            version,
            sid,
            digest_algorithm,
            signed_attributes,
            signature_algorithm,
            signature,
            unsigned_attributes,
            signed_attributes_data,
        })
    }

Trait Implementations

impl Clone for SignerIdentifier

fn clone(&self) -> SignerIdentifier

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SignerIdentifier

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

Formats the value using the given formatter.

impl PartialEq<SignerIdentifier> for SignerIdentifier

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Values for SignerIdentifier

fn encoded_len(&self, mode: Mode) -> usize

Returns the length of the encoded values for the given mode.

fn write_encoded<W: Write>(&self, mode: Mode, target: &mut W) -> Result<(), Error>

Encodes the values in the given mode and writes them to target.

fn explicit(self, tag: Tag) -> Constructed<Self>where
    Self: Sized,

Converts the encoder into one with an explicit tag.

fn to_captured(&self, mode: Mode) -> Captured

Captures the encoded values in the given mode.

impl Eq for SignerIdentifier

impl StructuralEq for SignerIdentifier

impl StructuralPartialEq for SignerIdentifier