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-rw-r--r--Crypto/src/asn1/cms/OriginatorPublicKey.cs87
1 files changed, 87 insertions, 0 deletions
diff --git a/Crypto/src/asn1/cms/OriginatorPublicKey.cs b/Crypto/src/asn1/cms/OriginatorPublicKey.cs
new file mode 100644

index 000000000..aabaf4386 --- /dev/null +++ b/Crypto/src/asn1/cms/OriginatorPublicKey.cs
@@ -0,0 +1,87 @@ +using System; + +using Org.BouncyCastle.Asn1; +using Org.BouncyCastle.Asn1.X509; + +namespace Org.BouncyCastle.Asn1.Cms +{ + public class OriginatorPublicKey + : Asn1Encodable + { + private AlgorithmIdentifier algorithm; + private DerBitString publicKey; + + public OriginatorPublicKey( + AlgorithmIdentifier algorithm, + byte[] publicKey) + { + this.algorithm = algorithm; + this.publicKey = new DerBitString(publicKey); + } + + public OriginatorPublicKey( + Asn1Sequence seq) + { + algorithm = AlgorithmIdentifier.GetInstance(seq[0]); + publicKey = (DerBitString) seq[1]; + } + + /** + * return an OriginatorPublicKey object from a tagged object. + * + * @param obj the tagged object holding the object we want. + * @param explicitly true if the object is meant to be explicitly + * tagged false otherwise. + * @exception ArgumentException if the object held by the + * tagged object cannot be converted. + */ + public static OriginatorPublicKey GetInstance( + Asn1TaggedObject obj, + bool explicitly) + { + return GetInstance(Asn1Sequence.GetInstance(obj, explicitly)); + } + + /** + * return an OriginatorPublicKey object from the given object. + * + * @param obj the object we want converted. + * @exception ArgumentException if the object cannot be converted. + */ + public static OriginatorPublicKey GetInstance( + object obj) + { + if (obj == null || obj is OriginatorPublicKey) + return (OriginatorPublicKey)obj; + + if (obj is Asn1Sequence) + return new OriginatorPublicKey((Asn1Sequence) obj); + + throw new ArgumentException("Invalid OriginatorPublicKey: " + obj.GetType().Name); + } + + public AlgorithmIdentifier Algorithm + { + get { return algorithm; } + } + + public DerBitString PublicKey + { + get { return publicKey; } + } + + /** + * Produce an object suitable for an Asn1OutputStream. + * <pre> + * OriginatorPublicKey ::= Sequence { + * algorithm AlgorithmIdentifier, + * publicKey BIT STRING + * } + * </pre> + */ + public override Asn1Object ToAsn1Object() + { + return new DerSequence(algorithm, publicKey); + } + } +}