Package org.mozilla.jss.crypto

Class EncryptionAlgorithm

java.lang.Object

org.mozilla.jss.crypto.Algorithm

org.mozilla.jss.crypto.EncryptionAlgorithm

public class EncryptionAlgorithm
extends Algorithm

An algorithm for performing symmetric encryption.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EncryptionAlgorithm.Alg
static class	EncryptionAlgorithm.Mode
static class	EncryptionAlgorithm.Padding

Field Summary

Fields

Modifier and Type	Field	Description
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	DES_CBC
static EncryptionAlgorithm	DES_CBC_PAD
static EncryptionAlgorithm	DES_ECB
static EncryptionAlgorithm	DES3_CBC
static EncryptionAlgorithm	DES3_CBC_PAD
static EncryptionAlgorithm	DES3_ECB
static EncryptionAlgorithm	RC2_CBC
static EncryptionAlgorithm	RC2_CBC_PAD
static EncryptionAlgorithm	RC4

Fields inherited from class org.mozilla.jss.crypto.Algorithm

CKM_AES_CBC, CKM_AES_CBC_PAD, CKM_AES_CMAC, CKM_AES_ECB, CKM_AES_KEY_GEN, CKM_AES_KEY_WRAP, CKM_AES_KEY_WRAP_PAD, CKM_DES_CBC_PAD, CKM_DES_KEY_GEN, CKM_DES3_CBC_PAD, CKM_DES3_ECB, CKM_DES3_KEY_GEN, CKM_DSA_KEY_PAIR_GEN, CKM_EC_KEY_PAIR_GEN, CKM_NSS_AES_KEY_WRAP, CKM_NSS_AES_KEY_WRAP_PAD, CKM_PBA_SHA1_WITH_SHA1_HMAC, CKM_RC2_CBC_PAD, CKM_RC2_KEY_GEN, CKM_RC4_KEY_GEN, CKM_RSA_PKCS_KEY_PAIR_GEN, CKM_SHA_1_HMAC, CKM_SHA256_HMAC, CKM_SHA384_HMAC, CKM_SHA512_HMAC, oid, oidIndex, SEC_OID_AES_128_CBC, SEC_OID_AES_128_ECB, SEC_OID_AES_192_CBC, SEC_OID_AES_192_ECB, SEC_OID_AES_256_CBC, SEC_OID_AES_256_ECB, SEC_OID_ANSIX9_DSA_SIGNATURE, SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST, SEC_OID_ANSIX962_EC_PUBLIC_KEY, SEC_OID_ANSIX962_ECDSA_SHA1_SIGNATURE, SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE, SEC_OID_ANSIX962_ECDSA_SHA384_SIGNATURE, SEC_OID_ANSIX962_ECDSA_SHA512_SIGNATURE, SEC_OID_ANSIX962_ECDSA_SIGNATURE_SPECIFIED_DIGEST, SEC_OID_DES_CBC, SEC_OID_DES_ECB, SEC_OID_DES_EDE3_CBC, SEC_OID_HMAC_SHA256, SEC_OID_HMAC_SHA384, SEC_OID_HMAC_SHA512, SEC_OID_MD2, SEC_OID_MD5, SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION, SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION, SEC_OID_PKCS1_RSA_ENCRYPTION, SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION, SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION, SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION, SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION, SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC, SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC4, SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC, SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC, SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC4, SEC_OID_PKCS5_PBE_WITH_MD2_AND_DES_CBC, SEC_OID_PKCS5_PBE_WITH_MD5_AND_DES_CBC, SEC_OID_PKCS5_PBE_WITH_SHA1_AND_DES_CBC, SEC_OID_PKCS5_PBES2, SEC_OID_PKCS5_PBKDF2, SEC_OID_PKCS5_PBMAC1, SEC_OID_RC2_CBC, SEC_OID_RC4, SEC_OID_SHA1, SEC_OID_SHA256, SEC_OID_SHA384, SEC_OID_SHA512

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, java.lang.Class<?>[] paramClasses, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)
protected	EncryptionAlgorithm(int oidTag, EncryptionAlgorithm.Alg alg, EncryptionAlgorithm.Mode mode, EncryptionAlgorithm.Padding padding, java.lang.Class<?> paramClass, int blockSize, OBJECT_IDENTIFIER oid, int keyStrength)

Method Summary

Modifier and Type	Method	Description
static EncryptionAlgorithm	fromOID(OBJECT_IDENTIFIER oid)
static EncryptionAlgorithm	fromString(java.lang.String name)	Deprecated. This method is deprecated because algorithm strings don't contain key length, which is necessary to distinguish between AES algorithms.
EncryptionAlgorithm.Alg	getAlg()
int	getBlockSize()
int	getIVLength()	Returns the number of bytes that this algorithm expects in its initialization vector.
int	getKeyStrength()
EncryptionAlgorithm.Mode	getMode()
EncryptionAlgorithm.Padding	getPadding()
EncryptionAlgorithm.Padding	getPaddingType()
boolean	isPadded()
static EncryptionAlgorithm	lookup(java.lang.String algName, java.lang.String modeName, java.lang.String paddingName, int keyStrength)

Methods inherited from class org.mozilla.jss.crypto.Algorithm

getEnum, getParameterClass, getParameterClasses, isValidParameterObject, toOID, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

RC4

public static final EncryptionAlgorithm RC4

DES_ECB

public static final EncryptionAlgorithm DES_ECB

DES_CBC

public static final EncryptionAlgorithm DES_CBC

DES_CBC_PAD

public static final EncryptionAlgorithm DES_CBC_PAD

DES3_ECB

public static final EncryptionAlgorithm DES3_ECB

DES3_CBC

public static final EncryptionAlgorithm DES3_CBC

DES3_CBC_PAD

public static final EncryptionAlgorithm DES3_CBC_PAD

RC2_CBC

public static final EncryptionAlgorithm RC2_CBC

RC2_CBC_PAD

public static final EncryptionAlgorithm RC2_CBC_PAD

AES_ROOT_OID

public static final OBJECT_IDENTIFIER AES_ROOT_OID

AES_128_ECB

public static final EncryptionAlgorithm AES_128_ECB

AES_128_CBC

public static final EncryptionAlgorithm AES_128_CBC

AES_128_CBC_PAD

public static final EncryptionAlgorithm AES_128_CBC_PAD

AES_192_ECB

public static final EncryptionAlgorithm AES_192_ECB

AES_192_CBC

public static final EncryptionAlgorithm AES_192_CBC

AES_192_CBC_PAD

public static final EncryptionAlgorithm AES_192_CBC_PAD

AES_256_ECB

public static final EncryptionAlgorithm AES_256_ECB

AES_256_CBC

public static final EncryptionAlgorithm AES_256_CBC

AES_CBC_PAD

public static final EncryptionAlgorithm AES_CBC_PAD

AES_256_CBC_PAD

public static final EncryptionAlgorithm AES_256_CBC_PAD

Constructor Detail

EncryptionAlgorithm

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

EncryptionAlgorithm

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

Method Detail

getAlg

public EncryptionAlgorithm.Alg getAlg()

Returns:

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

getMode

public EncryptionAlgorithm.Mode getMode()

Returns:

The mode of this algorithm.

getPadding

public EncryptionAlgorithm.Padding getPadding()

Returns:

The padding type of this algorithm.

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.

fromOID

public static EncryptionAlgorithm fromOID(OBJECT_IDENTIFIER oid)
                                   throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

fromString

@Deprecated
public static EncryptionAlgorithm fromString(java.lang.String name)
                                      throws java.security.NoSuchAlgorithmException

Deprecated.

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

Parameters:

name - Algorithm name.

Returns:

Encryption algorithm.

Throws:

java.security.NoSuchAlgorithmException - If the algorithm is not found.

lookup

public static EncryptionAlgorithm lookup(java.lang.String algName,
                                         java.lang.String modeName,
                                         java.lang.String paddingName,
                                         int keyStrength)
                                  throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

getBlockSize

public int getBlockSize()

Returns:

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

isPadded

public boolean isPadded()

Returns:

true if this algorithm performs padding.

getPaddingType

public EncryptionAlgorithm.Padding getPaddingType()

Returns:

The type of padding for this algorithm.

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.