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IpSecAlgorithm

public final class IpSecAlgorithm
extends Object implements Parcelable

java.lang.Object
↳	android.net.IpSecAlgorithm

This class represents a single algorithm that can be used by an IpSecTransform.

See also:

RFC 4301, Security Architecture for the Internet Protocol

Summary

Constants
`String`	`AUTH_CRYPT_AES_GCM` AES-GCM Authentication/Integrity + Encryption/Ciphering Algorithm.
`String`	`AUTH_HMAC_MD5` MD5 HMAC Authentication/Integrity Algorithm.
`String`	`AUTH_HMAC_SHA1` SHA1 HMAC Authentication/Integrity Algorithm.
`String`	`AUTH_HMAC_SHA256` SHA256 HMAC Authentication/Integrity Algorithm.
`String`	`AUTH_HMAC_SHA384` SHA384 HMAC Authentication/Integrity Algorithm.
`String`	`AUTH_HMAC_SHA512` SHA512 HMAC Authentication/Integrity Algorithm.
`String`	`CRYPT_AES_CBC` AES-CBC Encryption/Ciphering Algorithm.

Inherited constants

From interface android.os.Parcelable

`int`	`CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int`	`PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

Fields
`public static final Creator<IpSecAlgorithm>`	`CREATOR` Parcelable Creator

Public constructors
`IpSecAlgorithm(String algorithm, byte[] key)` Creates an IpSecAlgorithm of one of the supported types.
`IpSecAlgorithm(String algorithm, byte[] key, int truncLenBits)` Creates an IpSecAlgorithm of one of the supported types.

Public methods
`int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`byte[]`	`getKey()` Get the key for this algorithm
`String`	`getName()` Get the algorithm name
`int`	`getTruncationLengthBits()` Get the truncation length of this algorithm, in bits
`String`	`toString()` Returns a string representation of the object.
`void`	`writeToParcel(Parcel out, int flags)` Write to parcel

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


        
          android.os.Parcelable

`abstract int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Constants

AUTH_CRYPT_AES_GCM

public static final String AUTH_CRYPT_AES_GCM

AES-GCM Authentication/Integrity + Encryption/Ciphering Algorithm.

Valid lengths for keying material are {160, 224, 288}.

As per RFC4106 (Section 8.1), keying material consists of a 128, 192, or 256 bit AES key followed by a 32-bit salt. RFC compliance requires that the salt must be unique per invocation with the same key.

Valid ICV (truncation) lengths are {64, 96, 128}.

Constant Value: "rfc4106(gcm(aes))"

AUTH_HMAC_MD5

public static final String AUTH_HMAC_MD5

MD5 HMAC Authentication/Integrity Algorithm. This algorithm is not recommended for use in new applications and is provided for legacy compatibility with 3gpp infrastructure.

Keys for this algorithm must be 128 bits in length.

Valid truncation lengths are multiples of 8 bits from 96 to 128.

Constant Value: "hmac(md5)"

AUTH_HMAC_SHA1

public static final String AUTH_HMAC_SHA1

SHA1 HMAC Authentication/Integrity Algorithm. This algorithm is not recommended for use in new applications and is provided for legacy compatibility with 3gpp infrastructure.

Keys for this algorithm must be 160 bits in length.

Valid truncation lengths are multiples of 8 bits from 96 to 160.

Constant Value: "hmac(sha1)"

AUTH_HMAC_SHA256

public static final String AUTH_HMAC_SHA256

SHA256 HMAC Authentication/Integrity Algorithm.

Keys for this algorithm must be 256 bits in length.

Valid truncation lengths are multiples of 8 bits from 96 to 256.

Constant Value: "hmac(sha256)"

AUTH_HMAC_SHA384

public static final String AUTH_HMAC_SHA384

SHA384 HMAC Authentication/Integrity Algorithm.

Keys for this algorithm must be 384 bits in length.

Valid truncation lengths are multiples of 8 bits from 192 to 384.

Constant Value: "hmac(sha384)"

AUTH_HMAC_SHA512

public static final String AUTH_HMAC_SHA512

SHA512 HMAC Authentication/Integrity Algorithm.

Keys for this algorithm must be 512 bits in length.

Valid truncation lengths are multiples of 8 bits from 256 to 512.

Constant Value: "hmac(sha512)"

CRYPT_AES_CBC

public static final String CRYPT_AES_CBC

AES-CBC Encryption/Ciphering Algorithm.

Valid lengths for this key are {128, 192, 256}.

Constant Value: "cbc(aes)"

Fields

CREATOR

public static final Creator<IpSecAlgorithm> CREATOR

Parcelable Creator

Public constructors

IpSecAlgorithm

public IpSecAlgorithm (String algorithm, 
                byte[] key)

Creates an IpSecAlgorithm of one of the supported types. Supported algorithm names are defined as constants in this class.

For algorithms that produce an integrity check value, the truncation length is a required parameter. See IpSecAlgorithm(java.lang.String, byte[], int)

Parameters
`algorithm`	`String`: name of the algorithm. This value cannot be `null`. Value is `CRYPT_AES_CBC`, `AUTH_HMAC_MD5`, `AUTH_HMAC_SHA1`, `AUTH_HMAC_SHA256`, `AUTH_HMAC_SHA384`, `AUTH_HMAC_SHA512`, or `AUTH_CRYPT_AES_GCM`
`key`	`byte`: key padded to a multiple of 8 bits. This value cannot be `null`.

IpSecAlgorithm

public IpSecAlgorithm (String algorithm, 
                byte[] key, 
                int truncLenBits)

Creates an IpSecAlgorithm of one of the supported types. Supported algorithm names are defined as constants in this class.

This constructor only supports algorithms that use a truncation length. i.e. Authentication and Authenticated Encryption algorithms.

Parameters
`algorithm`	`String`: name of the algorithm. This value cannot be `null`. Value is `CRYPT_AES_CBC`, `AUTH_HMAC_MD5`, `AUTH_HMAC_SHA1`, `AUTH_HMAC_SHA256`, `AUTH_HMAC_SHA384`, `AUTH_HMAC_SHA512`, or `AUTH_CRYPT_AES_GCM`
`key`	`byte`: key padded to a multiple of 8 bits. This value cannot be `null`.
`truncLenBits`	`int`: number of bits of output hash to use.

Public methods

describeContents

public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(android.os.Parcel, int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Returns
`int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

getKey

public byte[] getKey ()

Get the key for this algorithm

Returns
`byte[]`	This value cannot be `null`.

getName

public String getName ()

Get the algorithm name

Returns
`String`	This value cannot be `null`.

getTruncationLengthBits

public int getTruncationLengthBits ()

Get the truncation length of this algorithm, in bits

Returns
`int`

toString

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
`String`	This value cannot be `null`.

writeToParcel

public void writeToParcel (Parcel out, 
                int flags)

Write to parcel

Parameters
`out`	`Parcel`: The Parcel in which the object should be written.
`flags`	`int`: Additional flags about how the object should be written. May be 0 or `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES

Interfaces

Classes

Enums

Exceptions

Most visited

Recently visited

Results for

IpSecAlgorithm

Summary

Constants

Inherited constants

Fields

Public constructors

Public methods

Inherited methods

Constants

AUTH_CRYPT_AES_GCM

AUTH_HMAC_MD5

AUTH_HMAC_SHA1

AUTH_HMAC_SHA256

AUTH_HMAC_SHA384

AUTH_HMAC_SHA512

CRYPT_AES_CBC

Fields

CREATOR

Public constructors

IpSecAlgorithm

IpSecAlgorithm

Public methods

describeContents

getKey

getName

getTruncationLengthBits

toString

writeToParcel