diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ASN1OctetString.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ASN1OctetString.java | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ASN1OctetString.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ASN1OctetString.java new file mode 100644 index 000000000..1e67ad8fd --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ASN1OctetString.java @@ -0,0 +1,146 @@ +package org.spongycastle.asn1; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; + +import org.spongycastle.util.Arrays; +import org.spongycastle.util.encoders.Hex; + +public abstract class ASN1OctetString + extends ASN1Primitive + implements ASN1OctetStringParser +{ + byte[] string; + + /** + * return an Octet String 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 tagged object cannot + * be converted. + */ + public static ASN1OctetString getInstance( + ASN1TaggedObject obj, + boolean explicit) + { + ASN1Primitive o = obj.getObject(); + + if (explicit || o instanceof ASN1OctetString) + { + return getInstance(o); + } + else + { + return BEROctetString.fromSequence(ASN1Sequence.getInstance(o)); + } + } + + /** + * return an Octet String from the given object. + * + * @param obj the object we want converted. + * @exception IllegalArgumentException if the object cannot be converted. + */ + public static ASN1OctetString getInstance( + Object obj) + { + if (obj == null || obj instanceof ASN1OctetString) + { + return (ASN1OctetString)obj; + } + else if (obj instanceof byte[]) + { + try + { + return ASN1OctetString.getInstance(ASN1Primitive.fromByteArray((byte[])obj)); + } + catch (IOException e) + { + throw new IllegalArgumentException("failed to construct OCTET STRING from byte[]: " + e.getMessage()); + } + } + else if (obj instanceof ASN1Encodable) + { + ASN1Primitive primitive = ((ASN1Encodable)obj).toASN1Primitive(); + + if (primitive instanceof ASN1OctetString) + { + return (ASN1OctetString)primitive; + } + } + + throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); + } + + /** + * @param string the octets making up the octet string. + */ + public ASN1OctetString( + byte[] string) + { + if (string == null) + { + throw new NullPointerException("string cannot be null"); + } + this.string = string; + } + + public InputStream getOctetStream() + { + return new ByteArrayInputStream(string); + } + + public ASN1OctetStringParser parser() + { + return this; + } + + public byte[] getOctets() + { + return string; + } + + public int hashCode() + { + return Arrays.hashCode(this.getOctets()); + } + + boolean asn1Equals( + ASN1Primitive o) + { + if (!(o instanceof ASN1OctetString)) + { + return false; + } + + ASN1OctetString other = (ASN1OctetString)o; + + return Arrays.areEqual(string, other.string); + } + + public ASN1Primitive getLoadedObject() + { + return this.toASN1Primitive(); + } + + ASN1Primitive toDERObject() + { + return new DEROctetString(string); + } + + ASN1Primitive toDLObject() + { + return new DEROctetString(string); + } + + abstract void encode(ASN1OutputStream out) + throws IOException; + + public String toString() + { + return "#"+new String(Hex.encode(string)); + } +} |