Extensions (moe.ios.core API)

java.lang.Object
- org.apache.harmony.security.x509.Extensions

```
public final class Extensions
extends Object
```
The class encapsulates the ASN.1 DER encoding/decoding work with the Extensions part of X.509 certificate (as specified in RFC 3280 - Internet X.509 Public Key Infrastructure. Certificate and Certificate Revocation List (CRL) Profile. http://www.ietf.org/rfc/rfc3280.txt):
```
  Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension
 
```

Field Summary

Fields
Modifier and Type Field and Description

static ASN1Type ASN1
Custom X.509 Extensions decoder.

Fields
Modifier and Type	Field and Description
`static ASN1Type`	`ASN1` Custom X.509 Extensions decoder.

Constructor Summary

Constructors
Constructor and Description

Extensions()
Constructs an object representing the value of Extensions.

Extensions(List<Extension> extensions)

Constructors
Constructor and Description
`Extensions()` Constructs an object representing the value of Extensions.
`Extensions(List<Extension> extensions)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`dumpValue(StringBuilder sb, String prefix)`
`boolean`	`equals(Object other)` Compares this instance with the specified object and indicates if they are equal.
`Set<String>`	`getCriticalExtensions()` Returns the list of critical extensions.
`byte[]`	`getEncoded()` Returns ASN.1 encoded form of this X.509 Extensions value.
`Extension`	`getExtensionByOID(String oid)` Returns the values of extensions.
`Set<String>`	`getNonCriticalExtensions()` Returns the list of critical extensions.
`int`	`hashCode()` Returns an integer hash code for this object.
`boolean`	`hasUnsupportedCritical()`
`int`	`size()`
`int`	`valueOfBasicConstraints()` Returns the value of Basic Constraints Extension (OID = 2.5.29.19).
`X500Principal`	`valueOfCertificateIssuerExtension()` Returns the value of Certificate Issuer Extension (OID = 2.5.29.29).
`List<String>`	`valueOfExtendedKeyUsage()` Returns the value of Extended Key Usage extension (OID == 2.5.29.37).
`Collection<List<?>>`	`valueOfIssuerAlternativeName()` Returns the value of Issuer Alternative Name Extension (OID = 2.5.29.18).
`boolean[]`	`valueOfKeyUsage()` Returns the value of Key Usage extension (OID == 2.5.29.15).
`Collection<List<?>>`	`valueOfSubjectAlternativeName()` Returns the value of Subject Alternative Name (OID = 2.5.29.17).

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

- Field Detail
  - ASN1
```
public static final ASN1Type ASN1
```
    Custom X.509 Extensions decoder.
- Constructor Detail
  - Extensions
```
public Extensions()
```
    Constructs an object representing the value of Extensions.
  - Extensions
```
public Extensions(List<Extension> extensions)
```
- Method Detail
  - size
```
public int size()
```
  - getCriticalExtensions
```
public Set<String> getCriticalExtensions()
```
    Returns the list of critical extensions.
  - getNonCriticalExtensions
```
public Set<String> getNonCriticalExtensions()
```
    Returns the list of critical extensions.
  - hasUnsupportedCritical
```
public boolean hasUnsupportedCritical()
```
  - getExtensionByOID
```
public Extension getExtensionByOID(String oid)
```
    Returns the values of extensions.
  - valueOfKeyUsage
```
public boolean[] valueOfKeyUsage()
```
    Returns the value of Key Usage extension (OID == 2.5.29.15). The ASN.1 definition of Key Usage Extension is:
```
 id-ce-keyUsage OBJECT IDENTIFIER ::=  { id-ce 15 }

 KeyUsage ::= BIT STRING {
     digitalSignature        (0),
     nonRepudiation          (1),
     keyEncipherment         (2),
     dataEncipherment        (3),
     keyAgreement            (4),
     keyCertSign             (5),
     cRLSign                 (6),
     encipherOnly            (7),
     decipherOnly            (8)
 }
 
```
    (as specified in RFC 3280)
    Returns:
    
    the value of Key Usage Extension if it is in the list, and null if there is no such extension or its value can not be decoded otherwise. Note, that the length of returned array can be greater than 9.
  - valueOfExtendedKeyUsage
```
public List<String> valueOfExtendedKeyUsage()
                                     throws IOException
```
    Returns the value of Extended Key Usage extension (OID == 2.5.29.37). The ASN.1 definition of Extended Key Usage Extension is:
```
  id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 }

  ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId

  KeyPurposeId ::= OBJECT IDENTIFIER
 
```
    (as specified in RFC 3280)
    Returns:
    
    the list with string representations of KeyPurposeId's OIDs and null
    
    Throws:
    
    IOException - if extension was incorrectly encoded.
  - valueOfBasicConstraints
```
public int valueOfBasicConstraints()
```
    Returns the value of Basic Constraints Extension (OID = 2.5.29.19). The ASN.1 definition of Basic Constraints Extension is:
```
   id-ce-basicConstraints OBJECT IDENTIFIER ::=  { id-ce 19 }

   BasicConstraints ::= SEQUENCE {
        cA                      BOOLEAN DEFAULT FALSE,
        pathLenConstraint       INTEGER (0..MAX) OPTIONAL
   }
 
```
    (as specified in RFC 3280)
  - valueOfSubjectAlternativeName
```
public Collection<List<?>> valueOfSubjectAlternativeName()
                                                  throws IOException
```
    Returns the value of Subject Alternative Name (OID = 2.5.29.17). The ASN.1 definition for Subject Alternative Name is:
```
  id-ce-subjectAltName OBJECT IDENTIFIER ::=  { id-ce 17 }

  SubjectAltName ::= GeneralNames
 
```
    (as specified in RFC 3280)
    Returns:
    
    Returns the collection of pairs: (Integer (tag), Object (name value)) if extension presents, and null if does not.
    
    Throws:
    
    IOException
  - valueOfIssuerAlternativeName
```
public Collection<List<?>> valueOfIssuerAlternativeName()
                                                 throws IOException
```
    Returns the value of Issuer Alternative Name Extension (OID = 2.5.29.18). The ASN.1 definition for Issuer Alternative Name is:
```
   id-ce-issuerAltName OBJECT IDENTIFIER ::=  { id-ce 18 }

   IssuerAltName ::= GeneralNames
 
```
    (as specified in RFC 3280)
    Returns:
    
    Returns the collection of pairs: (Integer (tag), Object (name value)) if extension presents, and null if does not.
    
    Throws:
    
    IOException
  - valueOfCertificateIssuerExtension
```
public X500Principal valueOfCertificateIssuerExtension()
                                                throws IOException
```
    Returns the value of Certificate Issuer Extension (OID = 2.5.29.29). It is a CRL entry extension and contains the GeneralNames describing the issuer of revoked certificate. Its ASN.1 notation is as follows:
```
   id-ce-certificateIssuer   OBJECT IDENTIFIER ::= { id-ce 29 }

   certificateIssuer ::=     GeneralNames
 
```
    (as specified in RFC 3280)
    Returns:
    
    the value of Certificate Issuer Extension
    
    Throws:
    
    IOException
  - getEncoded
```
public byte[] getEncoded()
```
    Returns ASN.1 encoded form of this X.509 Extensions value.
  - equals
```
public boolean equals(Object other)
```
    Description copied from class: Object
    
    Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.
    The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.
    The general contract for the equals and Object.hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    other - the object to compare this instance with.
    
    Returns:
    
    true if the specified object is equal to this Object; false otherwise.
    
    See Also:
    
    Object.hashCode()
  - hashCode
```
public int hashCode()
```
    Description copied from class: Object
    
    Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.
    Note that hash values must not change over time unless information used in equals comparisons also changes.
    See Writing a correct hashCode method if you intend implementing your own hashCode method.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    this object's hash code.
    
    See Also:
    
    Object.equals(java.lang.Object)
  - dumpValue
```
public void dumpValue(StringBuilder sb,
                      String prefix)
```

Class Extensions

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ASN1

Constructor Detail

Extensions

Extensions

Method Detail

size

getCriticalExtensions

getNonCriticalExtensions

hasUnsupportedCritical

getExtensionByOID

valueOfKeyUsage

valueOfExtendedKeyUsage

valueOfBasicConstraints

valueOfSubjectAlternativeName

valueOfIssuerAlternativeName

valueOfCertificateIssuerExtension

getEncoded

equals

hashCode

dumpValue