public KeyAgreeRecipientInformation(
KeyAgreeRecipientInfo info,
AlgorithmIdentifier encAlg,
Stream data)
: base(encAlg, AlgorithmIdentifier.GetInstance(info.KeyEncryptionAlgorithm), data)
{
_info = info;
// _encAlg = encAlg;
try
{
Asn1Sequence s = _info.RecipientEncryptedKeys;
RecipientEncryptedKey id = RecipientEncryptedKey.GetInstance(s[0]);
Asn1.Cms.IssuerAndSerialNumber iAnds = id.Identifier.IssuerAndSerialNumber;
// byte[] issuerBytes = iAnds.Name.GetEncoded();
_rid = new RecipientID();
// _rid.SetIssuer(issuerBytes);
_rid.Issuer = iAnds.Name;
_rid.SerialNumber = iAnds.SerialNumber.Value;
_encryptedKey = id.EncryptedKey;
}
catch (IOException e)
{
throw new ArgumentException("invalid rid in KeyAgreeRecipientInformation", e);
}
}
internal KeyAgreeRecipientInformation(
KeyAgreeRecipientInfo info,
RecipientID rid,
Asn1OctetString encryptedKey,
CmsSecureReadable secureReadable)
: base(info.KeyEncryptionAlgorithm, secureReadable)
{
this.info = info;
this.rid = rid;
this.encryptedKey = encryptedKey;
}
internal static void ReadRecipientInfo(IList infos, KeyAgreeRecipientInfo info,
CmsSecureReadable secureReadable)
{
try
{
foreach (Asn1Encodable rek in info.RecipientEncryptedKeys)
{
RecipientEncryptedKey id = RecipientEncryptedKey.GetInstance(rek.ToAsn1Object());
RecipientID rid = new RecipientID();
Asn1.Cms.KeyAgreeRecipientIdentifier karid = id.Identifier;
Asn1.Cms.IssuerAndSerialNumber iAndSN = karid.IssuerAndSerialNumber;
if (iAndSN != null)
{
rid.Issuer = iAndSN.Name;
rid.SerialNumber = iAndSN.SerialNumber.Value;
}
else
{
Asn1.Cms.RecipientKeyIdentifier rKeyID = karid.RKeyID;
// Note: 'date' and 'other' fields of RecipientKeyIdentifier appear to be only informational
rid.SubjectKeyIdentifier = rKeyID.SubjectKeyIdentifier.GetOctets();
}
infos.Add(new KeyAgreeRecipientInformation(info, rid, id.EncryptedKey,
secureReadable));
}
}
catch (IOException e)
{
throw new ArgumentException("invalid rid in KeyAgreeRecipientInformation", e);
}
}
public RecipientInfo(
KeyAgreeRecipientInfo info)
{
this.info = new DerTaggedObject(false, 1, info);
}
public RecipientInfo(
KeyAgreeRecipientInfo info)
{
this.info = new DerTaggedObject(false, 1, info);
}
public static KeyAgreeRecipientInfo GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return(KeyAgreeRecipientInfo.GetInstance(Asn1Sequence.GetInstance(obj, explicitly)));
}