public Class SignerInfo

PKCS#7:

SignerInfo ::= SEQUENCE {
    version                   Version,
    sid                       SignerIdentifier,
    digestAlgorithm           DigestAlgorithmIdentifier,
    authenticatedAttributes   [0] IMPLICIT Attributes OPTIONAL,
    digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier,
    encryptedDigest           EncryptedDigest,
    unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL
}

EncryptedDigest ::= OCTET STRING

DigestAlgorithmIdentifier ::= AlgorithmIdentifier

DigestEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier

-----------------------------------------

RFC 5652:

SignerInfo ::= SEQUENCE {
    version            CMSVersion,
    sid                SignerIdentifier,
    digestAlgorithm    DigestAlgorithmIdentifier,
    signedAttrs        [0] IMPLICIT SignedAttributes OPTIONAL,
    signatureAlgorithm SignatureAlgorithmIdentifier,
    signature          SignatureValue,
    unsignedAttrs      [1] IMPLICIT UnsignedAttributes OPTIONAL
}

-- SignerIdentifier referenced certificates are at containing
-- SignedData certificates element.

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

-- See Attributes for generalized SET OF Attribute

SignedAttributes   ::= SET SIZE (1..MAX) OF Attribute
UnsignedAttributes ::= SET SIZE (1..MAX) OF Attribute

Attribute ::= SEQUENCE {
    attrType   OBJECT IDENTIFIER,
    attrValues SET OF AttributeValue }

AttributeValue ::= ANY

SignatureValue ::= OCTET STRING