diff options
Diffstat (limited to 'Crypto/src/asn1/cmp/PKIHeader.cs')
| -rw-r--r-- | Crypto/src/asn1/cmp/PKIHeader.cs | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/Crypto/src/asn1/cmp/PKIHeader.cs b/Crypto/src/asn1/cmp/PKIHeader.cs new file mode 100644 index 000000000..e758e9f16 --- /dev/null +++ b/Crypto/src/asn1/cmp/PKIHeader.cs @@ -0,0 +1,237 @@ +using System; + +using Org.BouncyCastle.Asn1.X509; + +namespace Org.BouncyCastle.Asn1.Cmp +{ + public class PkiHeader + : Asn1Encodable + { + /** + * Value for a "null" recipient or sender. + */ + public static readonly GeneralName NULL_NAME = new GeneralName(X509Name.GetInstance(new DerSequence())); + + public static readonly int CMP_1999 = 1; + public static readonly int CMP_2000 = 2; + + private readonly DerInteger pvno; + private readonly GeneralName sender; + private readonly GeneralName recipient; + private readonly DerGeneralizedTime messageTime; + private readonly AlgorithmIdentifier protectionAlg; + private readonly Asn1OctetString senderKID; // KeyIdentifier + private readonly Asn1OctetString recipKID; // KeyIdentifier + private readonly Asn1OctetString transactionID; + private readonly Asn1OctetString senderNonce; + private readonly Asn1OctetString recipNonce; + private readonly PkiFreeText freeText; + private readonly Asn1Sequence generalInfo; + + private PkiHeader(Asn1Sequence seq) + { + pvno = DerInteger.GetInstance(seq[0]); + sender = GeneralName.GetInstance(seq[1]); + recipient = GeneralName.GetInstance(seq[2]); + + for (int pos = 3; pos < seq.Count; ++pos) + { + Asn1TaggedObject tObj = (Asn1TaggedObject)seq[pos]; + + switch (tObj.TagNo) + { + case 0: + messageTime = DerGeneralizedTime.GetInstance(tObj, true); + break; + case 1: + protectionAlg = AlgorithmIdentifier.GetInstance(tObj, true); + break; + case 2: + senderKID = Asn1OctetString.GetInstance(tObj, true); + break; + case 3: + recipKID = Asn1OctetString.GetInstance(tObj, true); + break; + case 4: + transactionID = Asn1OctetString.GetInstance(tObj, true); + break; + case 5: + senderNonce = Asn1OctetString.GetInstance(tObj, true); + break; + case 6: + recipNonce = Asn1OctetString.GetInstance(tObj, true); + break; + case 7: + freeText = PkiFreeText.GetInstance(tObj, true); + break; + case 8: + generalInfo = Asn1Sequence.GetInstance(tObj, true); + break; + default: + throw new ArgumentException("unknown tag number: " + tObj.TagNo, "seq"); + } + } + } + + public static PkiHeader GetInstance(object obj) + { + if (obj is PkiHeader) + return (PkiHeader)obj; + + if (obj is Asn1Sequence) + return new PkiHeader((Asn1Sequence)obj); + + throw new ArgumentException("Invalid object: " + obj.GetType().Name, "obj"); + } + + public PkiHeader( + int pvno, + GeneralName sender, + GeneralName recipient) + : this(new DerInteger(pvno), sender, recipient) + { + } + + private PkiHeader( + DerInteger pvno, + GeneralName sender, + GeneralName recipient) + { + this.pvno = pvno; + this.sender = sender; + this.recipient = recipient; + } + + public virtual DerInteger Pvno + { + get { return pvno; } + } + + public virtual GeneralName Sender + { + get { return sender; } + } + + public virtual GeneralName Recipient + { + get { return recipient; } + } + + public virtual DerGeneralizedTime MessageTime + { + get { return messageTime; } + } + + public virtual AlgorithmIdentifier ProtectionAlg + { + get { return protectionAlg; } + } + + public virtual Asn1OctetString SenderKID + { + get { return senderKID; } + } + + public virtual Asn1OctetString RecipKID + { + get { return recipKID; } + } + + public virtual Asn1OctetString TransactionID + { + get { return transactionID; } + } + + public virtual Asn1OctetString SenderNonce + { + get { return senderNonce; } + } + + public virtual Asn1OctetString RecipNonce + { + get { return recipNonce; } + } + + public virtual PkiFreeText FreeText + { + get { return freeText; } + } + + public virtual InfoTypeAndValue[] GetGeneralInfo() + { + if (generalInfo == null) + { + return null; + } + InfoTypeAndValue[] results = new InfoTypeAndValue[generalInfo.Count]; + for (int i = 0; i < results.Length; i++) + { + results[i] = InfoTypeAndValue.GetInstance(generalInfo[i]); + } + return results; + } + + /** + * <pre> + * PkiHeader ::= SEQUENCE { + * pvno INTEGER { cmp1999(1), cmp2000(2) }, + * sender GeneralName, + * -- identifies the sender + * recipient GeneralName, + * -- identifies the intended recipient + * messageTime [0] GeneralizedTime OPTIONAL, + * -- time of production of this message (used when sender + * -- believes that the transport will be "suitable"; i.e., + * -- that the time will still be meaningful upon receipt) + * protectionAlg [1] AlgorithmIdentifier OPTIONAL, + * -- algorithm used for calculation of protection bits + * senderKID [2] KeyIdentifier OPTIONAL, + * recipKID [3] KeyIdentifier OPTIONAL, + * -- to identify specific keys used for protection + * transactionID [4] OCTET STRING OPTIONAL, + * -- identifies the transaction; i.e., this will be the same in + * -- corresponding request, response, certConf, and PKIConf + * -- messages + * senderNonce [5] OCTET STRING OPTIONAL, + * recipNonce [6] OCTET STRING OPTIONAL, + * -- nonces used to provide replay protection, senderNonce + * -- is inserted by the creator of this message; recipNonce + * -- is a nonce previously inserted in a related message by + * -- the intended recipient of this message + * freeText [7] PKIFreeText OPTIONAL, + * -- this may be used to indicate context-specific instructions + * -- (this field is intended for human consumption) + * generalInfo [8] SEQUENCE SIZE (1..MAX) OF + * InfoTypeAndValue OPTIONAL + * -- this may be used to convey context-specific information + * -- (this field not primarily intended for human consumption) + * } + * </pre> + * @return a basic ASN.1 object representation. + */ + public override Asn1Object ToAsn1Object() + { + Asn1EncodableVector v = new Asn1EncodableVector(pvno, sender, recipient); + + AddOptional(v, 0, messageTime); + AddOptional(v, 1, protectionAlg); + AddOptional(v, 2, senderKID); + AddOptional(v, 3, recipKID); + AddOptional(v, 4, transactionID); + AddOptional(v, 5, senderNonce); + AddOptional(v, 6, recipNonce); + AddOptional(v, 7, freeText); + AddOptional(v, 8, generalInfo); + + return new DerSequence(v); + } + + private static void AddOptional(Asn1EncodableVector v, int tagNo, Asn1Encodable obj) + { + if (obj != null) + { + v.Add(new DerTaggedObject(true, tagNo, obj)); + } + } + } +} |