smime

type Attribute struct {
	Type   asn1.ObjectIdentifier
	Values [][]byte
}

type Data []byte

type EncryptionAlgorithm int

type IssuerAndSerialNumber struct {
	Issuer       pkix.Name
	SerialNumber *big.Int
}

type SignedData struct {
	Version          int
	DigestAlgorithms []pkix.AlgorithmIdentifier

	ContentType asn1.ObjectIdentifier
	Content     []byte

	Certificates []*x509.Certificate
	CRLs         []*pkix.CertificateList

	Signers []*Signer
}

type Signer struct {
	Id SignerId

	RawSignedAttributes []byte
	SignedAttributes    []Attribute
	UnsignedAttributes  []Attribute

	DigestAlgorithm    pkix.AlgorithmIdentifier
	SignatureAlgorithm pkix.AlgorithmIdentifier

	Signature []byte
}

type SignerId interface {
	Matches(*x509.Certificate) bool
}

type SubjectKeyIdentifier []byte