diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
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committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java b/core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java new file mode 100644 index 00000000..f325fcd9 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/cms/PasswordRecipientInfo.java @@ -0,0 +1,143 @@ +package org.bouncycastle.asn1.cms; + +import org.bouncycastle.asn1.ASN1EncodableVector; +import org.bouncycastle.asn1.ASN1Integer; +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1OctetString; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.ASN1Sequence; +import org.bouncycastle.asn1.ASN1TaggedObject; +import org.bouncycastle.asn1.DERSequence; +import org.bouncycastle.asn1.DERTaggedObject; +import org.bouncycastle.asn1.x509.AlgorithmIdentifier; + +public class PasswordRecipientInfo + extends ASN1Object +{ + private ASN1Integer version; + private AlgorithmIdentifier keyDerivationAlgorithm; + private AlgorithmIdentifier keyEncryptionAlgorithm; + private ASN1OctetString encryptedKey; + + public PasswordRecipientInfo( + AlgorithmIdentifier keyEncryptionAlgorithm, + ASN1OctetString encryptedKey) + { + this.version = new ASN1Integer(0); + this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; + this.encryptedKey = encryptedKey; + } + + public PasswordRecipientInfo( + AlgorithmIdentifier keyDerivationAlgorithm, + AlgorithmIdentifier keyEncryptionAlgorithm, + ASN1OctetString encryptedKey) + { + this.version = new ASN1Integer(0); + this.keyDerivationAlgorithm = keyDerivationAlgorithm; + this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; + this.encryptedKey = encryptedKey; + } + + public PasswordRecipientInfo( + ASN1Sequence seq) + { + version = (ASN1Integer)seq.getObjectAt(0); + if (seq.getObjectAt(1) instanceof ASN1TaggedObject) + { + keyDerivationAlgorithm = AlgorithmIdentifier.getInstance((ASN1TaggedObject)seq.getObjectAt(1), false); + keyEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(2)); + encryptedKey = (ASN1OctetString)seq.getObjectAt(3); + } + else + { + keyEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(1)); + encryptedKey = (ASN1OctetString)seq.getObjectAt(2); + } + } + + /** + * return a PasswordRecipientInfo 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 PasswordRecipientInfo getInstance( + ASN1TaggedObject obj, + boolean explicit) + { + return getInstance(ASN1Sequence.getInstance(obj, explicit)); + } + + /** + * return a PasswordRecipientInfo object from the given object. + * + * @param obj the object we want converted. + * @exception IllegalArgumentException if the object cannot be converted. + */ + public static PasswordRecipientInfo getInstance( + Object obj) + { + if (obj == null || obj instanceof PasswordRecipientInfo) + { + return (PasswordRecipientInfo)obj; + } + + if(obj instanceof ASN1Sequence) + { + return new PasswordRecipientInfo((ASN1Sequence)obj); + } + + throw new IllegalArgumentException("Invalid PasswordRecipientInfo: " + obj.getClass().getName()); + } + + public ASN1Integer getVersion() + { + return version; + } + + public AlgorithmIdentifier getKeyDerivationAlgorithm() + { + return keyDerivationAlgorithm; + } + + public AlgorithmIdentifier getKeyEncryptionAlgorithm() + { + return keyEncryptionAlgorithm; + } + + public ASN1OctetString getEncryptedKey() + { + return encryptedKey; + } + + /** + * Produce an object suitable for an ASN1OutputStream. + * <pre> + * PasswordRecipientInfo ::= SEQUENCE { + * version CMSVersion, -- Always set to 0 + * keyDerivationAlgorithm [0] KeyDerivationAlgorithmIdentifier + * OPTIONAL, + * keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier, + * encryptedKey EncryptedKey } + * </pre> + */ + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(version); + + if (keyDerivationAlgorithm != null) + { + v.add(new DERTaggedObject(false, 0, keyDerivationAlgorithm)); + } + v.add(keyEncryptionAlgorithm); + v.add(encryptedKey); + + return new DERSequence(v); + } +} |