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提交 af862438 编写于 作者: I igerasim
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8171252: Improve exception checking 

8158517: Minor optimizations to ISO10126PADDING
Reviewed-by: ascarpino, mschoene
上级 83890cdc
隐藏空白更改
内联 并排
Showing with 60 addition and 592 deletion
src/share/classes/com/sun/crypto/provider/AESCipher.java
浏览文件 @ af862438
/*
* Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -156,7 +156,7 @@ abstract class AESCipher extends CipherSpi {
throw new InvalidKeyException("Key encoding must not be null");
} else if (value.length != fixedKeySize) {
throw new InvalidKeyException("The key must be " +
fixedKeySize*8 + " bits");
fixedKeySize + " bytes");
}
}
}
......@@ -509,7 +509,7 @@ abstract class AESCipher extends CipherSpi {
throw new InvalidKeyException("Invalid AES key length: " +
encoded.length + " bytes");
}
return encoded.length * 8;
return Math.multiplyExact(encoded.length, 8);
}
/**
......@@ -628,9 +628,9 @@ abstract class AESCipher extends CipherSpi {
}
if (src != null) {
int aadLen = src.limit() - src.position();
if (aadLen != 0) {
if (aadLen > 0) {
if (src.hasArray()) {
int aadOfs = src.arrayOffset() + src.position();
int aadOfs = Math.addExact(src.arrayOffset(), src.position());
core.updateAAD(src.array(), aadOfs, aadLen);
src.position(src.limit());
} else {
......
src/share/classes/com/sun/crypto/provider/AESWrapCipher.java
浏览文件 @ af862438
/*
* Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2004, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -156,7 +156,7 @@ abstract class AESWrapCipher extends CipherSpi {
if (decrypting) {
result = inputLen - 8;
} else {
result = inputLen + 8;
result = Math.addExact(inputLen, 8);
}
return (result < 0? 0:result);
}
......@@ -378,7 +378,7 @@ abstract class AESWrapCipher extends CipherSpi {
throw new InvalidKeyException("Invalid key length: " +
encoded.length + " bytes");
}
return encoded.length * 8;
return Math.multiplyExact(encoded.length, 8);
}
/**
......@@ -404,7 +404,7 @@ abstract class AESWrapCipher extends CipherSpi {
throw new InvalidKeyException("Cannot get an encoding of " +
"the key to be wrapped");
}
byte[] out = new byte[keyVal.length + 8];
byte[] out = new byte[Math.addExact(keyVal.length, 8)];
if (keyVal.length == 8) {
System.arraycopy(IV, 0, out, 0, IV.length);
......
src/share/classes/com/sun/crypto/provider/ARCFOURCipher.java
浏览文件 @ af862438
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -257,7 +257,7 @@ public final class ARCFOURCipher extends CipherSpi {
// see JCE spec
protected int engineGetKeySize(Key key) throws InvalidKeyException {
byte[] encodedKey = getEncodedKey(key);
return encodedKey.length << 3;
return Math.multiplyExact(encodedKey.length, 8);
}
}
src/share/classes/com/sun/crypto/provider/BlowfishCipher.java
浏览文件 @ af862438
/*
* Copyright (c) 1998, 2009, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -373,7 +373,7 @@ public final class BlowfishCipher extends CipherSpi {
* @exception InvalidKeyException if <code>key</code> is invalid.
*/
protected int engineGetKeySize(Key key) throws InvalidKeyException {
return (key.getEncoded().length * 8);
return Math.multiplyExact(key.getEncoded().length, 8);
}
/**
......
src/share/classes/com/sun/crypto/provider/CipherCore.java
浏览文件 @ af862438
/*
* Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -324,13 +324,14 @@ final class CipherCore {
}
private int getOutputSizeByOperation(int inputLen, boolean isDoFinal) {
int totalLen = buffered + inputLen + cipher.getBufferedLength();
int totalLen = Math.addExact(buffered, cipher.getBufferedLength());
totalLen = Math.addExact(totalLen, inputLen);
switch (cipherMode) {
case GCM_MODE:
if (isDoFinal) {
int tagLen = ((GaloisCounterMode) cipher).getTagLen();
if (!decrypting) {
totalLen += tagLen;
totalLen = Math.addExact(totalLen, tagLen);
} else {
totalLen -= tagLen;
}
......@@ -346,10 +347,10 @@ final class CipherCore {
totalLen = diffBlocksize;
} else {
int residue = (totalLen - diffBlocksize) % blockSize;
totalLen += (blockSize - residue);
totalLen = Math.addExact(totalLen, (blockSize - residue));
}
} else {
totalLen += padding.padLength(totalLen);
totalLen = Math.addExact(totalLen, padding.padLength(totalLen));
}
}
break;
......@@ -711,7 +712,8 @@ final class CipherCore {
}
// figure out how much can be sent to crypto function
int len = buffered + inputLen - minBytes;
int len = Math.addExact(buffered, inputLen);
len -= minBytes;
if (padding != null && decrypting) {
// do not include the padding bytes when decrypting
len -= blockSize;
......@@ -730,12 +732,12 @@ final class CipherCore {
int outLen = 0;
if (len != 0) { // there is some work to do
if ((input == output)
&& (outputOffset < (inputOffset + inputLen))
&& (inputOffset < (outputOffset + buffer.length))) {
&& (outputOffset - inputOffset < inputLen)
&& (inputOffset - outputOffset < buffer.length)) {
// copy 'input' out to avoid its content being
// overwritten prematurely.
input = Arrays.copyOfRange(input, inputOffset,
inputOffset + inputLen);
Math.addExact(inputOffset, inputLen));
inputOffset = 0;
}
if (len <= buffered) {
......@@ -757,13 +759,13 @@ final class CipherCore {
if (bufferCapacity != 0) {
temp = Math.min(bufferCapacity, inputConsumed);
if (unitBytes != blockSize) {
temp -= ((buffered + temp) % unitBytes);
temp -= (Math.addExact(buffered, temp) % unitBytes);
}
System.arraycopy(input, inputOffset, buffer, buffered, temp);
inputOffset += temp;
inputOffset = Math.addExact(inputOffset, temp);
inputConsumed -= temp;
inputLen -= temp;
buffered += temp;
buffered = Math.addExact(buffered, temp);
}
// process 'buffer'
if (decrypting) {
......@@ -771,7 +773,7 @@ final class CipherCore {
} else {
outLen = cipher.encrypt(buffer, 0, buffered, output, outputOffset);
}
outputOffset += outLen;
outputOffset = Math.addExact(outputOffset, outLen);
buffered = 0;
}
if (inputConsumed > 0) { // still has input to process
......@@ -802,7 +804,7 @@ final class CipherCore {
if (inputLen > 0) {
System.arraycopy(input, inputOffset, buffer, buffered,
inputLen);
buffered += inputLen;
buffered = Math.addExact(buffered, inputLen);
}
return outLen;
}
......@@ -912,10 +914,10 @@ final class CipherCore {
}
// calculate total input length
int len = buffered + inputLen;
int len = Math.addExact(buffered, inputLen);
// calculate padding length
int totalLen = len + cipher.getBufferedLength();
int totalLen = Math.addExact(len, cipher.getBufferedLength());
int paddingLen = 0;
// will the total input length be a multiple of blockSize?
if (unitBytes != blockSize) {
......@@ -948,12 +950,12 @@ final class CipherCore {
int finalBufLen = inputLen;
if ((buffered != 0) || (!decrypting && padding != null) ||
((input == output)
&& (outputOffset < (inputOffset + inputLen))
&& (inputOffset < (outputOffset + buffer.length)))) {
&& (outputOffset - inputOffset < inputLen)
&& (inputOffset - outputOffset < buffer.length))) {
if (decrypting || padding == null) {
paddingLen = 0;
}
finalBuf = new byte[len + paddingLen];
finalBuf = new byte[Math.addExact(len, paddingLen)];
finalOffset = 0;
if (buffered != 0) {
System.arraycopy(buffer, 0, finalBuf, 0, buffered);
......@@ -963,7 +965,7 @@ final class CipherCore {
buffered, inputLen);
}
if (paddingLen != 0) {
padding.padWithLen(finalBuf, (buffered+inputLen), paddingLen);
padding.padWithLen(finalBuf, Math.addExact(buffered, inputLen), paddingLen);
}
finalBufLen = finalBuf.length;
}
......
src/share/classes/com/sun/crypto/provider/DESedeWrapCipher.java
浏览文件 @ af862438
/*
* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2004, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -140,7 +140,7 @@ public final class DESedeWrapCipher extends CipherSpi {
if (decrypting) {
result = inputLen - 16; // CHECKSUM_LEN + IV_LEN;
} else {
result = inputLen + 16;
result = Math.addExact(inputLen, 16);
}
return (result < 0? 0:result);
}
......@@ -452,11 +452,11 @@ public final class DESedeWrapCipher extends CipherSpi {
}
byte[] cks = getChecksum(keyVal);
byte[] in = new byte[keyVal.length + CHECKSUM_LEN];
byte[] in = new byte[Math.addExact(keyVal.length, CHECKSUM_LEN)];
System.arraycopy(keyVal, 0, in, 0, keyVal.length);
System.arraycopy(cks, 0, in, keyVal.length, CHECKSUM_LEN);
byte[] out = new byte[iv.length + in.length];
byte[] out = new byte[Math.addExact(iv.length, in.length)];
System.arraycopy(iv, 0, out, 0, iv.length);
cipher.encrypt(in, 0, in.length, out, iv.length);
......
src/share/classes/com/sun/crypto/provider/ISO10126Padding.java
浏览文件 @ af862438
/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -63,15 +63,16 @@ final class ISO10126Padding implements Padding {
if (in == null)
return;
if ((off + len) > in.length) {
int idx = Math.addExact(off, len);
if (idx > in.length) {
throw new ShortBufferException("Buffer too small to hold padding");
}
byte paddingOctet = (byte) (len & 0xff);
byte[] padding = new byte[len];
byte[] padding = new byte[len - 1];
SunJCE.getRandom().nextBytes(padding);
padding[len-1] = paddingOctet;
System.arraycopy(padding, 0, in, off, len);
System.arraycopy(padding, 0, in, off, len - 1);
in[idx - 1] = paddingOctet;
return;
}
......@@ -94,14 +95,15 @@ final class ISO10126Padding implements Padding {
return 0;
}
byte lastByte = in[off + len - 1];
int idx = Math.addExact(off, len);
byte lastByte = in[idx - 1];
int padValue = (int)lastByte & 0x0ff;
if ((padValue < 0x01)
|| (padValue > blockSize)) {
return -1;
}
int start = off + len - ((int)lastByte & 0x0ff);
int start = idx - padValue;
if (start < off) {
return -1;
}
......
src/share/classes/com/sun/crypto/provider/PBECipherCore.java 已删除 100644 → 0
浏览文件 @ 83890cdc
/*
* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.crypto.provider;
import java.security.*;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
/**
* This class represents password-based encryption as defined by the PKCS #5
* standard.
*
* @author Jan Luehe
*
*
* @see javax.crypto.Cipher
*/
final class PBECipherCore {
// the encapsulated DES cipher
private CipherCore cipher;
private MessageDigest md;
private int blkSize;
private String algo = null;
private byte[] salt = null;
private int iCount = 10;
/**
* Creates an instance of PBE Cipher using the specified CipherSpi
* instance.
*
*/
PBECipherCore(String cipherAlg) throws NoSuchAlgorithmException,
NoSuchPaddingException {
algo = cipherAlg;
if (algo.equals("DES")) {
cipher = new CipherCore(new DESCrypt(),
DESConstants.DES_BLOCK_SIZE);
} else if (algo.equals("DESede")) {
cipher = new CipherCore(new DESedeCrypt(),
DESConstants.DES_BLOCK_SIZE);
} else {
throw new NoSuchAlgorithmException("No Cipher implementation " +
"for PBEWithMD5And" + algo);
}
cipher.setMode("CBC");
cipher.setPadding("PKCS5Padding");
// get instance of MD5
md = MessageDigest.getInstance("MD5");
}
/**
* Sets the mode of this cipher. This algorithm can only be run in CBC
* mode.
*
* @param mode the cipher mode
*
* @exception NoSuchAlgorithmException if the requested cipher mode is
* invalid
*/
void setMode(String mode) throws NoSuchAlgorithmException {
cipher.setMode(mode);
}
/**
* Sets the padding mechanism of this cipher. This algorithm only uses
* PKCS #5 padding.
*
* @param padding the padding mechanism
*
* @exception NoSuchPaddingException if the requested padding mechanism
* is invalid
*/
void setPadding(String paddingScheme) throws NoSuchPaddingException {
cipher.setPadding(paddingScheme);
}
/**
* Returns the block size (in bytes).
*
* @return the block size (in bytes)
*/
int getBlockSize() {
return DESConstants.DES_BLOCK_SIZE;
}
/**
* Returns the length in bytes that an output buffer would need to be in
* order to hold the result of the next <code>update</code> or
* <code>doFinal</code> operation, given the input length
* <code>inputLen</code> (in bytes).
*
* <p>This call takes into account any unprocessed (buffered) data from a
* previous <code>update</code> call, and padding.
*
* <p>The actual output length of the next <code>update</code> or
* <code>doFinal</code> call may be smaller than the length returned by
* this method.
*
* @param inputLen the input length (in bytes)
*
* @return the required output buffer size (in bytes)
*
*/
int getOutputSize(int inputLen) {
return cipher.getOutputSize(inputLen);
}
/**
* Returns the initialization vector (IV) in a new buffer.
*
* <p> This is useful in the case where a random IV has been created
* (see <a href = "#init">init</a>),
* or in the context of password-based encryption or
* decryption, where the IV is derived from a user-supplied password.
*
* @return the initialization vector in a new buffer, or null if the
* underlying algorithm does not use an IV, or if the IV has not yet
* been set.
*/
byte[] getIV() {
return cipher.getIV();
}
/**
* Returns the parameters used with this cipher.
*
* <p>The returned parameters may be the same that were used to initialize
* this cipher, or may contain the default set of parameters or a set of
* randomly generated parameters used by the underlying cipher
* implementation (provided that the underlying cipher implementation
* uses a default set of parameters or creates new parameters if it needs
* parameters but was not initialized with any).
*
* @return the parameters used with this cipher, or null if this cipher
* does not use any parameters.
*/
AlgorithmParameters getParameters() {
AlgorithmParameters params = null;
if (salt == null) {
salt = new byte[8];
SunJCE.getRandom().nextBytes(salt);
}
PBEParameterSpec pbeSpec = new PBEParameterSpec(salt, iCount);
try {
params = AlgorithmParameters.getInstance("PBEWithMD5And" +
(algo.equalsIgnoreCase("DES")? "DES":"TripleDES"),
SunJCE.getInstance());
params.init(pbeSpec);
} catch (NoSuchAlgorithmException nsae) {
// should never happen
throw new RuntimeException("SunJCE called, but not configured");
} catch (InvalidParameterSpecException ipse) {
// should never happen
throw new RuntimeException("PBEParameterSpec not supported");
}
return params;
}
/**
* Initializes this cipher with a key, a set of
* algorithm parameters, and a source of randomness.
* The cipher is initialized for one of the following four operations:
* encryption, decryption, key wrapping or key unwrapping, depending on
* the value of <code>opmode</code>.
*
* <p>If this cipher (including its underlying feedback or padding scheme)
* requires any random bytes, it will get them from <code>random</code>.
*
* @param opmode the operation mode of this cipher (this is one of
* the following:
* <code>ENCRYPT_MODE</code>, <code>DECRYPT_MODE</code>),
* <code>WRAP_MODE</code> or <code>UNWRAP_MODE</code>)
* @param key the encryption key
* @param params the algorithm parameters
* @param random the source of randomness
*
* @exception InvalidKeyException if the given key is inappropriate for
* initializing this cipher
* @exception InvalidAlgorithmParameterException if the given algorithm
* parameters are inappropriate for this cipher
*/
void init(int opmode, Key key, AlgorithmParameterSpec params,
SecureRandom random)
throws InvalidKeyException, InvalidAlgorithmParameterException {
if (((opmode == Cipher.DECRYPT_MODE) ||
(opmode == Cipher.UNWRAP_MODE)) && (params == null)) {
throw new InvalidAlgorithmParameterException("Parameters "
+ "missing");
}
if ((key == null) ||
(key.getEncoded() == null) ||
!(key.getAlgorithm().regionMatches(true, 0, "PBE", 0, 3))) {
throw new InvalidKeyException("Missing password");
}
if (params == null) {
// create random salt and use default iteration count
salt = new byte[8];
random.nextBytes(salt);
} else {
if (!(params instanceof PBEParameterSpec)) {
throw new InvalidAlgorithmParameterException
("Wrong parameter type: PBE expected");
}
salt = ((PBEParameterSpec) params).getSalt();
// salt must be 8 bytes long (by definition)
if (salt.length != 8) {
throw new InvalidAlgorithmParameterException
("Salt must be 8 bytes long");
}
iCount = ((PBEParameterSpec) params).getIterationCount();
if (iCount <= 0) {
throw new InvalidAlgorithmParameterException
("IterationCount must be a positive number");
}
}
byte[] derivedKey = deriveCipherKey(key);
// use all but the last 8 bytes as the key value
SecretKeySpec cipherKey = new SecretKeySpec(derivedKey, 0,
derivedKey.length-8, algo);
// use the last 8 bytes as the IV
IvParameterSpec ivSpec = new IvParameterSpec(derivedKey,
derivedKey.length-8,
8);
// initialize the underlying cipher
cipher.init(opmode, cipherKey, ivSpec, random);
}
private byte[] deriveCipherKey(Key key) {
byte[] result = null;
byte[] passwdBytes = key.getEncoded();
if (algo.equals("DES")) {
// P || S (password concatenated with salt)
byte[] concat = new byte[passwdBytes.length + salt.length];
System.arraycopy(passwdBytes, 0, concat, 0, passwdBytes.length);
java.util.Arrays.fill(passwdBytes, (byte)0x00);
System.arraycopy(salt, 0, concat, passwdBytes.length, salt.length);
// digest P || S with c iterations
byte[] toBeHashed = concat;
for (int i = 0; i < iCount; i++) {
md.update(toBeHashed);
toBeHashed = md.digest(); // this resets the digest
}
java.util.Arrays.fill(concat, (byte)0x00);
result = toBeHashed;
} else if (algo.equals("DESede")) {
// if the 2 salt halves are the same, invert one of them
int i;
for (i=0; i<4; i++) {
if (salt[i] != salt[i+4])
break;
}
if (i==4) { // same, invert 1st half
for (i=0; i<2; i++) {
byte tmp = salt[i];
salt[i] = salt[3-i];
salt[3-1] = tmp;
}
}
// Now digest each half (concatenated with password). For each
// half, go through the loop as many times as specified by the
// iteration count parameter (inner for loop).
// Concatenate the output from each digest round with the
// password, and use the result as the input to the next digest
// operation.
byte[] kBytes = null;
IvParameterSpec iv = null;
byte[] toBeHashed = null;
result = new byte[DESedeKeySpec.DES_EDE_KEY_LEN +
DESConstants.DES_BLOCK_SIZE];
for (i = 0; i < 2; i++) {
toBeHashed = new byte[salt.length/2];
System.arraycopy(salt, i*(salt.length/2), toBeHashed, 0,
toBeHashed.length);
for (int j=0; j < iCount; j++) {
md.update(toBeHashed);
md.update(passwdBytes);
toBeHashed = md.digest(); // this resets the digest
}
System.arraycopy(toBeHashed, 0, result, i*16,
toBeHashed.length);
}
}
return result;
}
void init(int opmode, Key key, AlgorithmParameters params,
SecureRandom random)
throws InvalidKeyException, InvalidAlgorithmParameterException {
PBEParameterSpec pbeSpec = null;
if (params != null) {
try {
pbeSpec = params.getParameterSpec(PBEParameterSpec.class);
} catch (InvalidParameterSpecException ipse) {
throw new InvalidAlgorithmParameterException("Wrong parameter "
+ "type: PBE "
+ "expected");
}
}
init(opmode, key, pbeSpec, random);
}
/**
* Continues a multiple-part encryption or decryption operation
* (depending on how this cipher was initialized), processing another data
* part.
*
* <p>The first <code>inputLen</code> bytes in the <code>input</code>
* buffer, starting at <code>inputOffset</code>, are processed, and the
* result is stored in a new buffer.
*
* @param input the input buffer
* @param inputOffset the offset in <code>input</code> where the input
* starts
* @param inputLen the input length
*
* @return the new buffer with the result
*
*/
byte[] update(byte[] input, int inputOffset, int inputLen) {
return cipher.update(input, inputOffset, inputLen);
}
/**
* Continues a multiple-part encryption or decryption operation
* (depending on how this cipher was initialized), processing another data
* part.
*
* <p>The first <code>inputLen</code> bytes in the <code>input</code>
* buffer, starting at <code>inputOffset</code>, are processed, and the
* result is stored in the <code>output</code> buffer, starting at
* <code>outputOffset</code>.
*
* @param input the input buffer
* @param inputOffset the offset in <code>input</code> where the input
* starts
* @param inputLen the input length
* @param output the buffer for the result
* @param outputOffset the offset in <code>output</code> where the result
* is stored
*
* @return the number of bytes stored in <code>output</code>
*
* @exception ShortBufferException if the given output buffer is too small
* to hold the result
*/
int update(byte[] input, int inputOffset, int inputLen,
byte[] output, int outputOffset)
throws ShortBufferException {
return cipher.update(input, inputOffset, inputLen,
output, outputOffset);
}
/**
* Encrypts or decrypts data in a single-part operation,
* or finishes a multiple-part operation.
* The data is encrypted or decrypted, depending on how this cipher was
* initialized.
*
* <p>The first <code>inputLen</code> bytes in the <code>input</code>
* buffer, starting at <code>inputOffset</code>, and any input bytes that
* may have been buffered during a previous <code>update</code> operation,
* are processed, with padding (if requested) being applied.
* The result is stored in a new buffer.
*
* <p>The cipher is reset to its initial state (uninitialized) after this
* call.
*
* @param input the input buffer
* @param inputOffset the offset in <code>input</code> where the input
* starts
* @param inputLen the input length
*
* @return the new buffer with the result
*
* @exception IllegalBlockSizeException if this cipher is a block cipher,
* no padding has been requested (only in encryption mode), and the total
* input length of the data processed by this cipher is not a multiple of
* block size
* @exception BadPaddingException if decrypting and padding is chosen,
* but the last input data does not have proper padding bytes.
*/
byte[] doFinal(byte[] input, int inputOffset, int inputLen)
throws IllegalBlockSizeException, BadPaddingException {
return cipher.doFinal(input, inputOffset, inputLen);
}
/**
* Encrypts or decrypts data in a single-part operation,
* or finishes a multiple-part operation.
* The data is encrypted or decrypted, depending on how this cipher was
* initialized.
*
* <p>The first <code>inputLen</code> bytes in the <code>input</code>
* buffer, starting at <code>inputOffset</code>, and any input bytes that
* may have been buffered during a previous <code>update</code> operation,
* are processed, with padding (if requested) being applied.
* The result is stored in the <code>output</code> buffer, starting at
* <code>outputOffset</code>.
*
* <p>The cipher is reset to its initial state (uninitialized) after this
* call.
*
* @param input the input buffer
* @param inputOffset the offset in <code>input</code> where the input
* starts
* @param inputLen the input length
* @param output the buffer for the result
* @param outputOffset the offset in <code>output</code> where the result
* is stored
*
* @return the number of bytes stored in <code>output</code>
*
* @exception IllegalBlockSizeException if this cipher is a block cipher,
* no padding has been requested (only in encryption mode), and the total
* input length of the data processed by this cipher is not a multiple of
* block size
* @exception ShortBufferException if the given output buffer is too small
* to hold the result
* @exception BadPaddingException if decrypting and padding is chosen,
* but the last input data does not have proper padding bytes.
*/
int doFinal(byte[] input, int inputOffset, int inputLen,
byte[] output, int outputOffset)
throws ShortBufferException, IllegalBlockSizeException,
BadPaddingException {
return cipher.doFinal(input, inputOffset, inputLen,
output, outputOffset);
}
/**
* Wrap a key.
*
* @param key the key to be wrapped.
*
* @return the wrapped key.
*
* @exception IllegalBlockSizeException if this cipher is a block
* cipher, no padding has been requested, and the length of the
* encoding of the key to be wrapped is not a
* multiple of the block size.
*
* @exception InvalidKeyException if it is impossible or unsafe to
* wrap the key with this cipher (e.g., a hardware protected key is
* being passed to a software only cipher).
*/
byte[] wrap(Key key)
throws IllegalBlockSizeException, InvalidKeyException {
byte[] result = null;
try {
byte[] encodedKey = key.getEncoded();
if ((encodedKey == null) || (encodedKey.length == 0)) {
throw new InvalidKeyException("Cannot get an encoding of " +
"the key to be wrapped");
}
result = doFinal(encodedKey, 0, encodedKey.length);
} catch (BadPaddingException e) {
// Should never happen
}
return result;
}
/**
* Unwrap a previously wrapped key.
*
* @param wrappedKey the key to be unwrapped.
*
* @param wrappedKeyAlgorithm the algorithm the wrapped key is for.
*
* @param wrappedKeyType the type of the wrapped key.
* This is one of <code>Cipher.SECRET_KEY</code>,
* <code>Cipher.PRIVATE_KEY</code>, or <code>Cipher.PUBLIC_KEY</code>.
*
* @return the unwrapped key.
*
* @exception NoSuchAlgorithmException if no installed providers
* can create keys of type <code>wrappedKeyType</code> for the
* <code>wrappedKeyAlgorithm</code>.
*
* @exception InvalidKeyException if <code>wrappedKey</code> does not
* represent a wrapped key of type <code>wrappedKeyType</code> for
* the <code>wrappedKeyAlgorithm</code>.
*/
Key unwrap(byte[] wrappedKey,
String wrappedKeyAlgorithm,
int wrappedKeyType)
throws InvalidKeyException, NoSuchAlgorithmException {
byte[] encodedKey;
try {
encodedKey = doFinal(wrappedKey, 0, wrappedKey.length);
} catch (BadPaddingException ePadding) {
throw new InvalidKeyException("The wrapped key is not padded " +
"correctly");
} catch (IllegalBlockSizeException eBlockSize) {
throw new InvalidKeyException("The wrapped key does not have " +
"the correct length");
}
return ConstructKeys.constructKey(encodedKey, wrappedKeyAlgorithm,
wrappedKeyType);
}
}
src/share/classes/com/sun/crypto/provider/PBES1Core.java
浏览文件 @ af862438
/*
* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -260,7 +260,7 @@ final class PBES1Core {
if (algo.equals("DES")) {
// P || S (password concatenated with salt)
byte[] concat = new byte[passwdBytes.length + salt.length];
byte[] concat = new byte[Math.addExact(passwdBytes.length, salt.length)];
System.arraycopy(passwdBytes, 0, concat, 0, passwdBytes.length);
java.util.Arrays.fill(passwdBytes, (byte)0x00);
System.arraycopy(salt, 0, concat, passwdBytes.length, salt.length);
......
src/share/classes/com/sun/crypto/provider/PKCS5Padding.java
浏览文件 @ af862438
/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -26,6 +26,7 @@
package com.sun.crypto.provider;
import javax.crypto.ShortBufferException;
import java.util.Arrays;
/**
* This class implements padding as specified in the PKCS#5 standard.
......@@ -63,14 +64,13 @@ final class PKCS5Padding implements Padding {
if (in == null)
return;
if ((off + len) > in.length) {
int idx = Math.addExact(off, len);
if (idx > in.length) {
throw new ShortBufferException("Buffer too small to hold padding");
}
byte paddingOctet = (byte) (len & 0xff);
for (int i = 0; i < len; i++) {
in[i + off] = paddingOctet;
}
Arrays.fill(in, off, idx, paddingOctet);
return;
}
......@@ -92,25 +92,24 @@ final class PKCS5Padding implements Padding {
(len == 0)) { // this can happen if input is really a padded buffer
return 0;
}
byte lastByte = in[off + len - 1];
int idx = Math.addExact(off, len);
byte lastByte = in[idx - 1];
int padValue = (int)lastByte & 0x0ff;
if ((padValue < 0x01)
|| (padValue > blockSize)) {
return -1;
}
int start = off + len - ((int)lastByte & 0x0ff);
int start = idx - padValue;
if (start < off) {
return -1;
}
for (int i = 0; i < ((int)lastByte & 0x0ff); i++) {
if (in[start+i] != lastByte) {
for (int i = start; i < idx; i++) {
if (in[i] != lastByte) {
return -1;
}
}
return start;
}
......
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