Package org.conscrypt
Class OpenSSLEvpCipher
java.lang.Object
javax.crypto.CipherSpi
org.conscrypt.OpenSSLCipher
org.conscrypt.OpenSSLEvpCipher
- Direct Known Subclasses:
OpenSSLEvpCipherAES
,OpenSSLEvpCipherARC4
,OpenSSLEvpCipherDESEDE
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Nested Class Summary
Nested classes/interfaces inherited from class org.conscrypt.OpenSSLCipher
OpenSSLCipher.Mode, OpenSSLCipher.Padding
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate boolean
Whether the cipher has processed any data yet.private final NativeRef.EVP_CIPHER_CTX
Native pointer for the OpenSSL EVP_CIPHER context.private int
The block size of the current mode.Fields inherited from class org.conscrypt.OpenSSLCipher
encodedKey, iv, mode
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescription(package private) int
doFinalInternal
(byte[] output, int outputOffset, int maximumLen) API-specific implementation of the final block.(package private) void
engineInitInternal
(byte[] encodedKey, AlgorithmParameterSpec params, SecureRandom random) API-specific implementation of initializing the cipher.(package private) abstract String
getCipherName
(int keySize, OpenSSLCipher.Mode mode) Returns the OpenSSL cipher name for the particularkeySize
and ciphermode
.(package private) int
getOutputSizeForFinal
(int inputLen) The size of output ifdoFinal()
is called with thisinputLen
.(package private) int
getOutputSizeForUpdate
(int inputLen) The size of output ifupdate()
is called with thisinputLen
.private void
reset()
Reset this Cipher instance state to process a new chunk of data.(package private) int
updateInternal
(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset, int maximumLen) API-specific implementation of updating the cipher.Methods inherited from class org.conscrypt.OpenSSLCipher
checkSupportedKeySize, checkSupportedMode, checkSupportedPadding, engineDoFinal, engineDoFinal, engineGetBlockSize, engineGetIV, engineGetKeySize, engineGetOutputSize, engineGetParameters, engineInit, engineInit, engineInit, engineSetMode, engineSetPadding, engineUnwrap, engineUpdate, engineUpdate, engineWrap, getBaseCipherName, getCipherBlockSize, getPadding, getParameterSpec, isEncrypting, supportsVariableSizeIv, supportsVariableSizeKey
Methods inherited from class javax.crypto.CipherSpi
engineDoFinal, engineUpdate, engineUpdateAAD, engineUpdateAAD
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Field Details
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cipherCtx
Native pointer for the OpenSSL EVP_CIPHER context. -
calledUpdate
private boolean calledUpdateWhether the cipher has processed any data yet. EVP_CIPHER doesn't like calling "doFinal()" in decryption mode without processing any updates. -
modeBlockSize
private int modeBlockSizeThe block size of the current mode.
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Constructor Details
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OpenSSLEvpCipher
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Method Details
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engineInitInternal
void engineInitInternal(byte[] encodedKey, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException Description copied from class:OpenSSLCipher
API-specific implementation of initializing the cipher. TheOpenSSLCipher.isEncrypting()
function will tell whether it should be initialized for encryption or decryption. TheencodedKey
will be the bytes of a supported key size.- Specified by:
engineInitInternal
in classOpenSSLCipher
- Throws:
InvalidKeyException
InvalidAlgorithmParameterException
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updateInternal
int updateInternal(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset, int maximumLen) throws ShortBufferException Description copied from class:OpenSSLCipher
API-specific implementation of updating the cipher. ThemaximumLen
will be the maximum length of the output as returned byOpenSSLCipher.getOutputSizeForUpdate(int)
. The return value must be the number of bytes processed and placed intooutput
. On error, an exception must be thrown.- Specified by:
updateInternal
in classOpenSSLCipher
- Throws:
ShortBufferException
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doFinalInternal
int doFinalInternal(byte[] output, int outputOffset, int maximumLen) throws IllegalBlockSizeException, BadPaddingException, ShortBufferException Description copied from class:OpenSSLCipher
API-specific implementation of the final block. ThemaximumLen
will be the maximum length of the possible output as returned byOpenSSLCipher.getOutputSizeForFinal(int)
. The return value must be the number of bytes processed and placed intooutput
. On error, an exception must be thrown.- Specified by:
doFinalInternal
in classOpenSSLCipher
- Throws:
IllegalBlockSizeException
BadPaddingException
ShortBufferException
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getOutputSizeForFinal
int getOutputSizeForFinal(int inputLen) Description copied from class:OpenSSLCipher
The size of output ifdoFinal()
is called with thisinputLen
. If padding is enabled and the size of the input puts it right at the block size, it will add another block for the padding.- Specified by:
getOutputSizeForFinal
in classOpenSSLCipher
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getOutputSizeForUpdate
int getOutputSizeForUpdate(int inputLen) Description copied from class:OpenSSLCipher
The size of output ifupdate()
is called with thisinputLen
. If padding is enabled and the size of the input puts it right at the block size, it will add another block for the padding.- Specified by:
getOutputSizeForUpdate
in classOpenSSLCipher
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getCipherName
Returns the OpenSSL cipher name for the particularkeySize
and ciphermode
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reset
private void reset()Reset this Cipher instance state to process a new chunk of data.
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