org.mozilla.jss.crypto

Class EncryptionAlgorithm

public class EncryptionAlgorithm extends Algorithm

An algorithm for performing symmetric encryption.

Nested Class Summary
static class	EncryptionAlgorithm.Alg
static class	EncryptionAlgorithm.Mode
static class	EncryptionAlgorithm.Padding

Field Summary
static EncryptionAlgorithm	AES_128_CBC
static EncryptionAlgorithm	AES_128_CBC_PAD
static EncryptionAlgorithm	AES_128_ECB
static EncryptionAlgorithm	AES_192_CBC
static EncryptionAlgorithm	AES_192_CBC_PAD
static EncryptionAlgorithm	AES_192_ECB
static EncryptionAlgorithm	AES_256_CBC
static EncryptionAlgorithm	AES_256_CBC_PAD
static EncryptionAlgorithm	AES_256_ECB
static EncryptionAlgorithm	AES_CBC_PAD
static OBJECT_IDENTIFIER	AES_ROOT_OID
static EncryptionAlgorithm	DES3_CBC
static EncryptionAlgorithm	DES3_CBC_PAD
static EncryptionAlgorithm	DES3_ECB
static EncryptionAlgorithm	DES_CBC
static EncryptionAlgorithm	DES_CBC_PAD
static EncryptionAlgorithm	DES_ECB
static EncryptionAlgorithm	RC2_CBC
static EncryptionAlgorithm	RC2_CBC_PAD
static EncryptionAlgorithm	RC4

Constructor Summary
protected	EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, Class paramClass, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)
protected	EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, Class[] paramClasses, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)

Method Summary
static EncryptionAlgorithm	fromOID(OBJECT_IDENTIFIER oid)
static EncryptionAlgorithm	fromString(String name)
EncryptionAlgorithm.Alg	getAlg() Returns the base algorithm, without the parameters.
int	getBlockSize() The blocksize of the algorithm in bytes.
int	getIVLength() Returns the number of bytes that this algorithm expects in its initialization vector.
int	getKeyStrength() Returns the key strength of this algorithm in bits.
EncryptionAlgorithm.Mode	getMode() Returns the mode of this algorithm.
EncryptionAlgorithm.Padding	getPadding() Returns the padding type of this algorithm.
EncryptionAlgorithm.Padding	getPaddingType() Returns the type of padding for this algorithm.
boolean	isPadded() Returns `true` if this algorithm performs padding.
static EncryptionAlgorithm	lookup(String algName, String modeName, String paddingName, int keyStrength)

Field Detail

AES_128_CBC

public static final EncryptionAlgorithm AES_128_CBC

AES_128_CBC_PAD

public static final EncryptionAlgorithm AES_128_CBC_PAD

AES_128_ECB

public static final EncryptionAlgorithm AES_128_ECB

AES_192_CBC

public static final EncryptionAlgorithm AES_192_CBC

AES_192_CBC_PAD

public static final EncryptionAlgorithm AES_192_CBC_PAD

AES_192_ECB

public static final EncryptionAlgorithm AES_192_ECB

AES_256_CBC

public static final EncryptionAlgorithm AES_256_CBC

AES_256_CBC_PAD

public static final EncryptionAlgorithm AES_256_CBC_PAD

AES_256_ECB

public static final EncryptionAlgorithm AES_256_ECB

AES_CBC_PAD

public static final EncryptionAlgorithm AES_CBC_PAD

AES_ROOT_OID

public static final OBJECT_IDENTIFIER AES_ROOT_OID

DES3_CBC

public static final EncryptionAlgorithm DES3_CBC

DES3_CBC_PAD

public static final EncryptionAlgorithm DES3_CBC_PAD

DES3_ECB

public static final EncryptionAlgorithm DES3_ECB

DES_CBC

public static final EncryptionAlgorithm DES_CBC

DES_CBC_PAD

public static final EncryptionAlgorithm DES_CBC_PAD

DES_ECB

public static final EncryptionAlgorithm DES_ECB

RC2_CBC

public static final EncryptionAlgorithm RC2_CBC

RC2_CBC_PAD

public static final EncryptionAlgorithm RC2_CBC_PAD

RC4

public static final EncryptionAlgorithm RC4

Constructor Detail

EncryptionAlgorithm

protected EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, Class paramClass, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)

EncryptionAlgorithm

protected EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, Class[] paramClasses, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)

Method Detail

fromOID

public static EncryptionAlgorithm fromOID(OBJECT_IDENTIFIER oid)

fromString

public static EncryptionAlgorithm fromString(String name)

Deprecated: This method is deprecated because algorithm strings don't contain key length, which is necessary to distinguish between AES algorithms.

getAlg

public EncryptionAlgorithm.Alg getAlg()

Returns the base algorithm, without the parameters. For example, the base algorithm of "AES/CBC/NoPadding" is "AES".

getBlockSize

public int getBlockSize()

The blocksize of the algorithm in bytes. Stream algorithms (such as RC4) have a blocksize of 1.

getIVLength

public int getIVLength()

Returns the number of bytes that this algorithm expects in its initialization vector.

Returns: The size in bytes of the IV for this algorithm. A size of 0 means this algorithm does not take an IV.

getKeyStrength

public int getKeyStrength()

Returns the key strength of this algorithm in bits. Algorithms that use continuously variable key sizes (such as RC4) will return 0 to indicate they can use any key size.

getMode

public EncryptionAlgorithm.Mode getMode()

Returns the mode of this algorithm.

getPadding

public EncryptionAlgorithm.Padding getPadding()

Returns the padding type of this algorithm.

getPaddingType

public EncryptionAlgorithm.Padding getPaddingType()

Returns the type of padding for this algorithm.

isPadded

public boolean isPadded()

Deprecated: Call getPaddingType() instead.

Returns true if this algorithm performs padding.

lookup

public static EncryptionAlgorithm lookup(String algName, String modeName, String paddingName, int keyStrength)