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org.mozilla.jss.crypto
Class Cipher
java.lang.Object org.mozilla.jss.crypto.Cipher
Deprecated. Use the JCA interface instead (
Cipher
)
public abstract class Cipher
- extends java.lang.Object
A context for performing symmetric encryption and decryption.
First, the context must be initialized. Then, it can be updated
with input through zero or more calls to update
. Finally,
doFinal
is called to finalize the operation. Note that
it is not necessary to call update
if all of the data is
available at once. In this case, all of the input can be processed with one
call to doFinal
.
Constructor Summary | |
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Cipher()
Deprecated. |
Method Summary | |
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abstract byte[] |
doFinal()
Deprecated. Completes an cipher operation. |
abstract byte[] |
doFinal(byte[] bytes)
Deprecated. Completes an cipher operation. |
abstract byte[] |
doFinal(byte[] bytes,
int offset,
int length)
Deprecated. Completes an cipher operation. |
abstract void |
initDecrypt(SymmetricKey key)
Deprecated. Initializes a decryption context with a symmetric key. |
abstract void |
initDecrypt(SymmetricKey key,
java.security.spec.AlgorithmParameterSpec parameters)
Deprecated. Initializes a decryption context with a symmetric key and algorithm parameters. |
abstract void |
initEncrypt(SymmetricKey key)
Deprecated. Initializes a encryption context with a symmetric key. |
abstract void |
initEncrypt(SymmetricKey key,
java.security.spec.AlgorithmParameterSpec parameters)
Deprecated. Initializes an encryption context with a symmetric key and algorithm parameters. |
static byte[] |
pad(byte[] toBePadded,
int blockSize)
Deprecated. Pads a byte array so that its length is a multiple of the given blocksize. |
static byte[] |
unPad(byte[] padded)
Deprecated. Un-pads a byte array that is padded with PKCS padding. |
static byte[] |
unPad(byte[] padded,
int blockSize)
Deprecated. Un-pads a byte array that is padded with PKCS padding. |
abstract byte[] |
update(byte[] bytes)
Deprecated. Updates the encryption context with additional input. |
abstract byte[] |
update(byte[] bytes,
int offset,
int length)
Deprecated. Updates the encryption context with additional plaintext. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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Cipher
public Cipher()
- Deprecated.
Method Detail |
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initEncrypt
public abstract void initEncrypt(SymmetricKey key) throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException
- Deprecated.
- Initializes a encryption context with a symmetric key.
- Throws:
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
- Initializes a encryption context with a symmetric key.
initDecrypt
public abstract void initDecrypt(SymmetricKey key) throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException
- Deprecated.
- Initializes a decryption context with a symmetric key.
- Throws:
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
- Initializes a decryption context with a symmetric key.
initEncrypt
public abstract void initEncrypt(SymmetricKey key, java.security.spec.AlgorithmParameterSpec parameters) throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException
- Deprecated.
- Initializes an encryption context with a symmetric key and algorithm parameters.
- Throws:
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
- Initializes an encryption context with a symmetric key and algorithm parameters.
initDecrypt
public abstract void initDecrypt(SymmetricKey key, java.security.spec.AlgorithmParameterSpec parameters) throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException
- Deprecated.
- Initializes a decryption context with a symmetric key and algorithm parameters.
- Throws:
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
- Initializes a decryption context with a symmetric key and algorithm parameters.
update
public abstract byte[] update(byte[] bytes) throws java.lang.IllegalStateException, TokenException
- Deprecated.
- Updates the encryption context with additional input.
- Parameters:
bytes
- Bytes of plaintext (if encrypting) or ciphertext (if decrypting).- Returns:
- Bytes of ciphertext (if encrypting) or plaintext (if decrypting).
- Throws:
java.lang.IllegalStateException
TokenException
- Updates the encryption context with additional input.
update
public abstract byte[] update(byte[] bytes, int offset, int length) throws java.lang.IllegalStateException, TokenException
- Deprecated.
- Updates the encryption context with additional plaintext.
- Parameters:
bytes
- Bytes of plaintext (if encrypting) or ciphertext (if decrypting).offset
- The index inbytes
at which to begin reading.length
- The number of bytes frombytes
to read.- Returns:
- Bytes of ciphertext (if encrypting) or plaintext (if decrypting).
- Throws:
java.lang.IllegalStateException
TokenException
- Updates the encryption context with additional plaintext.
doFinal
public abstract byte[] doFinal(byte[] bytes) throws java.lang.IllegalStateException, IllegalBlockSizeException, BadPaddingException, TokenException
- Deprecated.
- Completes an cipher operation. This can be called directly after the context is initialized, or
update
may be called any number of times before callingfinal
.- Parameters:
bytes
- Bytes of plaintext (if encrypting) or ciphertext (if decrypting).- Returns:
- The last of the output.
- Throws:
java.lang.IllegalStateException
IllegalBlockSizeException
BadPaddingException
TokenException
- Completes an cipher operation. This can be called directly after the context is initialized, or
doFinal
public abstract byte[] doFinal(byte[] bytes, int offset, int length) throws java.lang.IllegalStateException, IllegalBlockSizeException, BadPaddingException, TokenException
- Deprecated.
- Completes an cipher operation.
- Parameters:
bytes
- Bytes of plaintext (if encrypting) or ciphertext (if decrypting).offset
- The index inbytes
at which to begin reading.length
- The number of bytes frombytes
to read.- Returns:
- The last of the output.
- Throws:
java.lang.IllegalStateException
IllegalBlockSizeException
BadPaddingException
TokenException
- Completes an cipher operation.
doFinal
public abstract byte[] doFinal() throws java.lang.IllegalStateException, IllegalBlockSizeException, BadPaddingException, TokenException
- Deprecated.
- Completes an cipher operation.
- Returns:
- The last of the output.
- Throws:
java.lang.IllegalStateException
IllegalBlockSizeException
BadPaddingException
TokenException
- Completes an cipher operation.
pad
public static byte[] pad(byte[] toBePadded, int blockSize)
- Deprecated.
- Pads a byte array so that its length is a multiple of the given blocksize. The method of padding is the one defined in the RSA PKCS standards. If M is the length of the data and B is the block size, the padding string consists of B - (M mod B) octets, each having the value B - (M mod B).
- Parameters:
The
- block size of the encryption algorithm. Must be greater than zero.- See Also:
unPad(byte[], int)
- Pads a byte array so that its length is a multiple of the given blocksize. The method of padding is the one defined in the RSA PKCS standards. If M is the length of the data and B is the block size, the padding string consists of B - (M mod B) octets, each having the value B - (M mod B).
unPad
public static byte[] unPad(byte[] padded, int blockSize) throws BadPaddingException
- Deprecated.
- Un-pads a byte array that is padded with PKCS padding.
- Parameters:
blockSize
- The block size of the encryption algorithm. This is only used for error checking: if the pad size is not between 1 and blockSize, a BadPaddingException is thrown.- Throws:
BadPaddingException
- See Also:
pad(byte[], int)
- Un-pads a byte array that is padded with PKCS padding.
unPad
public static byte[] unPad(byte[] padded) throws BadPaddingException
- Deprecated.
- Un-pads a byte array that is padded with PKCS padding. Since this version does not take block size as a parameter, it cannot error check.
- Throws:
BadPaddingException
- See Also:
pad(byte[], int)
- Un-pads a byte array that is padded with PKCS padding. Since this version does not take block size as a parameter, it cannot error check.
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