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Diffstat (limited to 'core/src/main/java/org/spongycastle/asn1/cms/OriginatorPublicKey.java')
-rw-r--r-- | core/src/main/java/org/spongycastle/asn1/cms/OriginatorPublicKey.java | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/asn1/cms/OriginatorPublicKey.java b/core/src/main/java/org/spongycastle/asn1/cms/OriginatorPublicKey.java new file mode 100644 index 00000000..e5edcf3e --- /dev/null +++ b/core/src/main/java/org/spongycastle/asn1/cms/OriginatorPublicKey.java @@ -0,0 +1,114 @@ +package org.spongycastle.asn1.cms; + +import org.spongycastle.asn1.ASN1EncodableVector; +import org.spongycastle.asn1.ASN1Object; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.ASN1TaggedObject; +import org.spongycastle.asn1.DERBitString; +import org.spongycastle.asn1.DERSequence; +import org.spongycastle.asn1.x509.AlgorithmIdentifier; + +/** + * <a href="http://tools.ietf.org/html/rfc5652#section-6.2.2">RFC 5652</a>: + * Content encryption key delivery mechanisms. + * <p> + * <pre> + * OriginatorPublicKey ::= SEQUENCE { + * algorithm AlgorithmIdentifier, + * publicKey BIT STRING + * } + * </pre> + */ +public class OriginatorPublicKey + extends ASN1Object +{ + private AlgorithmIdentifier algorithm; + private DERBitString publicKey; + + public OriginatorPublicKey( + AlgorithmIdentifier algorithm, + byte[] publicKey) + { + this.algorithm = algorithm; + this.publicKey = new DERBitString(publicKey); + } + + /** + * @deprecated use getInstance() + */ + public OriginatorPublicKey( + ASN1Sequence seq) + { + algorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(0)); + publicKey = (DERBitString)seq.getObjectAt(1); + } + + /** + * Return an OriginatorPublicKey object from a tagged object. + * + * @param obj the tagged object holding the object we want. + * @param explicit true if the object is meant to be explicitly + * tagged false otherwise. + * @exception IllegalArgumentException if the object held by the + * tagged object cannot be converted. + */ + public static OriginatorPublicKey getInstance( + ASN1TaggedObject obj, + boolean explicit) + { + return getInstance(ASN1Sequence.getInstance(obj, explicit)); + } + + /** + * Return an OriginatorPublicKey object from the given object. + * <p> + * Accepted inputs: + * <ul> + * <li> null → null + * <li> {@link OriginatorPublicKey} object + * <li> {@link org.spongycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with OriginatorPublicKey structure inside + * </ul> + * + * @param obj the object we want converted. + * @exception IllegalArgumentException if the object cannot be converted. + */ + public static OriginatorPublicKey getInstance( + Object obj) + { + if (obj instanceof OriginatorPublicKey) + { + return (OriginatorPublicKey)obj; + } + + if (obj != null) + { + return new OriginatorPublicKey(ASN1Sequence.getInstance(obj)); + } + + return null; + } + + public AlgorithmIdentifier getAlgorithm() + { + return algorithm; + } + + public DERBitString getPublicKey() + { + return publicKey; + } + + /** + * Produce an object suitable for an ASN1OutputStream. + */ + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(algorithm); + v.add(publicKey); + + return new DERSequence(v); + } +} |