diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
---|---|---|
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/x509/SubjectPublicKeyInfo.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/x509/SubjectPublicKeyInfo.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/x509/SubjectPublicKeyInfo.java | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/x509/SubjectPublicKeyInfo.java b/core/src/main/java/org/bouncycastle/asn1/x509/SubjectPublicKeyInfo.java new file mode 100644 index 00000000..9e09cd72 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/x509/SubjectPublicKeyInfo.java @@ -0,0 +1,156 @@ +package org.bouncycastle.asn1.x509; + +import java.io.IOException; +import java.util.Enumeration; + +import org.bouncycastle.asn1.ASN1Encodable; +import org.bouncycastle.asn1.ASN1EncodableVector; +import org.bouncycastle.asn1.ASN1InputStream; +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.ASN1Sequence; +import org.bouncycastle.asn1.ASN1TaggedObject; +import org.bouncycastle.asn1.DERBitString; +import org.bouncycastle.asn1.DERSequence; + +/** + * The object that contains the public key stored in a certficate. + * <p> + * The getEncoded() method in the public keys in the JCE produces a DER + * encoded one of these. + */ +public class SubjectPublicKeyInfo + extends ASN1Object +{ + private AlgorithmIdentifier algId; + private DERBitString keyData; + + public static SubjectPublicKeyInfo getInstance( + ASN1TaggedObject obj, + boolean explicit) + { + return getInstance(ASN1Sequence.getInstance(obj, explicit)); + } + + public static SubjectPublicKeyInfo getInstance( + Object obj) + { + if (obj instanceof SubjectPublicKeyInfo) + { + return (SubjectPublicKeyInfo)obj; + } + else if (obj != null) + { + return new SubjectPublicKeyInfo(ASN1Sequence.getInstance(obj)); + } + + return null; + } + + public SubjectPublicKeyInfo( + AlgorithmIdentifier algId, + ASN1Encodable publicKey) + throws IOException + { + this.keyData = new DERBitString(publicKey); + this.algId = algId; + } + + public SubjectPublicKeyInfo( + AlgorithmIdentifier algId, + byte[] publicKey) + { + this.keyData = new DERBitString(publicKey); + this.algId = algId; + } + + public SubjectPublicKeyInfo( + ASN1Sequence seq) + { + if (seq.size() != 2) + { + throw new IllegalArgumentException("Bad sequence size: " + + seq.size()); + } + + Enumeration e = seq.getObjects(); + + this.algId = AlgorithmIdentifier.getInstance(e.nextElement()); + this.keyData = DERBitString.getInstance(e.nextElement()); + } + + public AlgorithmIdentifier getAlgorithm() + { + return algId; + } + + /** + * @deprecated use getAlgorithm() + * @return alg ID. + */ + public AlgorithmIdentifier getAlgorithmId() + { + return algId; + } + + /** + * for when the public key is an encoded object - if the bitstring + * can't be decoded this routine throws an IOException. + * + * @exception IOException - if the bit string doesn't represent a DER + * encoded object. + * @return the public key as an ASN.1 primitive. + */ + public ASN1Primitive parsePublicKey() + throws IOException + { + ASN1InputStream aIn = new ASN1InputStream(keyData.getBytes()); + + return aIn.readObject(); + } + + /** + * for when the public key is an encoded object - if the bitstring + * can't be decoded this routine throws an IOException. + * + * @exception IOException - if the bit string doesn't represent a DER + * encoded object. + * @deprecated use parsePublicKey + * @return the public key as an ASN.1 primitive. + */ + public ASN1Primitive getPublicKey() + throws IOException + { + ASN1InputStream aIn = new ASN1InputStream(keyData.getBytes()); + + return aIn.readObject(); + } + + /** + * for when the public key is raw bits. + * + * @return the public key as the raw bit string... + */ + public DERBitString getPublicKeyData() + { + return keyData; + } + + /** + * Produce an object suitable for an ASN1OutputStream. + * <pre> + * SubjectPublicKeyInfo ::= SEQUENCE { + * algorithm AlgorithmIdentifier, + * publicKey BIT STRING } + * </pre> + */ + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(algId); + v.add(keyData); + + return new DERSequence(v); + } +} |