- java.lang.Object
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- java.security.spec.EncodedKeySpec
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- java.security.spec.X509EncodedKeySpec
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- All Implemented Interfaces:
KeySpec
public class X509EncodedKeySpec extends EncodedKeySpec
This class represents the ASN.1 encoding of a public key, encoded according to the ASN.1 typeSubjectPublicKeyInfo. TheSubjectPublicKeyInfosyntax is defined in the X.509 standard as follows:SubjectPublicKeyInfo ::= SEQUENCE { algorithm AlgorithmIdentifier, subjectPublicKey BIT STRING }- Since:
- 1.2
- See Also:
Key,KeyFactory,KeySpec,EncodedKeySpec,PKCS8EncodedKeySpec
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Constructor Summary
Constructors Constructor Description X509EncodedKeySpec(byte[] encodedKey)Creates a newX509EncodedKeySpecwith the given encoded key.X509EncodedKeySpec(byte[] encodedKey, String algorithm)Creates a newX509EncodedKeySpecwith the given encoded key.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description byte[]getEncoded()Returns the key bytes, encoded according to the X.509 standard.StringgetFormat()Returns the name of the encoding format associated with this key specification.-
Methods declared in class java.security.spec.EncodedKeySpec
getAlgorithm
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Constructor Detail
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X509EncodedKeySpec
public X509EncodedKeySpec(byte[] encodedKey)
Creates a newX509EncodedKeySpecwith the given encoded key.- Parameters:
encodedKey- the key, which is assumed to be encoded according to the X.509 standard. The contents of the array are copied to protect against subsequent modification.- Throws:
NullPointerException- ifencodedKeyis null.
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X509EncodedKeySpec
public X509EncodedKeySpec(byte[] encodedKey, String algorithm)Creates a newX509EncodedKeySpecwith the given encoded key. This constructor is useful when subsequent callers of theX509EncodedKeySpecobject might not know the algorithm of the key.- Parameters:
encodedKey- the key, which is assumed to be encoded according to the X.509 standard. The contents of the array are copied to protect against subsequent modification.algorithm- the algorithm name of the encoded public key See the KeyFactory section in the Java Security Standard Algorithm Names Specification for information about standard algorithm names.- Throws:
NullPointerException- ifencodedKeyoralgorithmis null.IllegalArgumentException- ifalgorithmis the empty string""- Since:
- 9
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Method Detail
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getEncoded
public byte[] getEncoded()
Returns the key bytes, encoded according to the X.509 standard.- Overrides:
getEncodedin classEncodedKeySpec- Returns:
- the X.509 encoding of the key. Returns a new array each time this method is called.
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getFormat
public final String getFormat()
Returns the name of the encoding format associated with this key specification.- Specified by:
getFormatin classEncodedKeySpec- Returns:
- the string
"X.509".
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