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## org.bouncycastle.asn1.x509
Class SubjectPublicKeyInfo

    java.lang.Object
      org.bouncycastle.asn1.x509.SubjectPublicKeyInfo

All Implemented Interfaces:
  DEREncodable

public class SubjectPublicKeyInfo
extends java.lang.Object
implements DEREncodable

The object that contains the public key stored in a certficate.

The getEncoded() method in the public keys in the JCE produces a DER encoded one of these.

Constructor Summary
`SubjectPublicKeyInfo(AlgorithmIdentifier algId, byte[] publicKey)`
`SubjectPublicKeyInfo(AlgorithmIdentifier algId, DEREncodable publicKey)`
`SubjectPublicKeyInfo(ASN1Sequence seq)`

Method Summary
`AlgorithmIdentifier` | `getAlgorithmId()`
`DERObject` | `getDERObject()` Produce an object suitable for an ASN1OutputStream.
`static SubjectPublicKeyInfo` | `getInstance(ASN1TaggedObject obj, boolean explicit)`
`static SubjectPublicKeyInfo` | `getInstance(java.lang.Object obj)`
`DERObject` | `getPublicKey()` for when the public key is an encoded object - if the bitstring can't be decoded this routine throws an IOException.
`DERBitString` | `getPublicKeyData()` for when the public key is raw bits...

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SubjectPublicKeyInfo

    public SubjectPublicKeyInfo(AlgorithmIdentifier algId,
                                DEREncodable publicKey)

### SubjectPublicKeyInfo

    public SubjectPublicKeyInfo(AlgorithmIdentifier algId,
                                byte[] publicKey)

### SubjectPublicKeyInfo

    public SubjectPublicKeyInfo(ASN1Sequence seq)

Method Detail

### getInstance

    public static SubjectPublicKeyInfo getInstance(ASN1TaggedObject obj,
                                                   boolean explicit)

### getInstance

    public static SubjectPublicKeyInfo getInstance(java.lang.Object obj)

### getAlgorithmId

    public AlgorithmIdentifier getAlgorithmId()

### getPublicKey

    public DERObject getPublicKey()
                           throws java.io.IOException

  for when the public key is an encoded object - if the bitstring can't be decoded this routine throws an IOException.

  Throws:
    `java.io.IOException` - - if the bit string doesn't represent a DER encoded object.

### getPublicKeyData

    public DERBitString getPublicKeyData()

  for when the public key is raw bits...

### getDERObject

    public DERObject getDERObject()

  Produce an object suitable for an ASN1OutputStream.

       SubjectPublicKeyInfo ::= SEQUENCE {
                                algorithm AlgorithmIdentifier,
                                publicKey BIT STRING }

  Specified by:
    `getDERObject` in interface `DEREncodable`

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