diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/smime/SMIMECapability.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/smime/SMIMECapability.java | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/smime/SMIMECapability.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/smime/SMIMECapability.java new file mode 100644 index 000000000..c3c4a9996 --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/smime/SMIMECapability.java @@ -0,0 +1,103 @@ +package org.spongycastle.asn1.smime; + +import org.spongycastle.asn1.ASN1Encodable; +import org.spongycastle.asn1.ASN1EncodableVector; +import org.spongycastle.asn1.ASN1Object; +import org.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.DERSequence; +import org.spongycastle.asn1.nist.NISTObjectIdentifiers; +import org.spongycastle.asn1.pkcs.PKCSObjectIdentifiers; + +public class SMIMECapability + extends ASN1Object +{ + /** + * general preferences + */ + public static final ASN1ObjectIdentifier preferSignedData = PKCSObjectIdentifiers.preferSignedData; + public static final ASN1ObjectIdentifier canNotDecryptAny = PKCSObjectIdentifiers.canNotDecryptAny; + public static final ASN1ObjectIdentifier sMIMECapabilitiesVersions = PKCSObjectIdentifiers.sMIMECapabilitiesVersions; + + /** + * encryption algorithms preferences + */ + public static final ASN1ObjectIdentifier dES_CBC = new ASN1ObjectIdentifier("1.3.14.3.2.7"); + public static final ASN1ObjectIdentifier dES_EDE3_CBC = PKCSObjectIdentifiers.des_EDE3_CBC; + public static final ASN1ObjectIdentifier rC2_CBC = PKCSObjectIdentifiers.RC2_CBC; + public static final ASN1ObjectIdentifier aES128_CBC = NISTObjectIdentifiers.id_aes128_CBC; + public static final ASN1ObjectIdentifier aES192_CBC = NISTObjectIdentifiers.id_aes192_CBC; + public static final ASN1ObjectIdentifier aES256_CBC = NISTObjectIdentifiers.id_aes256_CBC; + + private ASN1ObjectIdentifier capabilityID; + private ASN1Encodable parameters; + + public SMIMECapability( + ASN1Sequence seq) + { + capabilityID = (ASN1ObjectIdentifier)seq.getObjectAt(0); + + if (seq.size() > 1) + { + parameters = (ASN1Primitive)seq.getObjectAt(1); + } + } + + public SMIMECapability( + ASN1ObjectIdentifier capabilityID, + ASN1Encodable parameters) + { + this.capabilityID = capabilityID; + this.parameters = parameters; + } + + public static SMIMECapability getInstance( + Object obj) + { + if (obj == null || obj instanceof SMIMECapability) + { + return (SMIMECapability)obj; + } + + if (obj instanceof ASN1Sequence) + { + return new SMIMECapability((ASN1Sequence)obj); + } + + throw new IllegalArgumentException("Invalid SMIMECapability"); + } + + public ASN1ObjectIdentifier getCapabilityID() + { + return capabilityID; + } + + public ASN1Encodable getParameters() + { + return parameters; + } + + /** + * Produce an object suitable for an ASN1OutputStream. + * <pre> + * SMIMECapability ::= SEQUENCE { + * capabilityID OBJECT IDENTIFIER, + * parameters ANY DEFINED BY capabilityID OPTIONAL + * } + * </pre> + */ + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(capabilityID); + + if (parameters != null) + { + v.add(parameters); + } + + return new DERSequence(v); + } +} |