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The Qbicc builder for the java.base JDK module
/*
* Copyright (c) 2003, 2021, 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
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package com.sun.crypto.provider;
import java.security.*;
import java.security.spec.*;
import java.util.Arrays;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.security.auth.DestroyFailedException;
/**
* This class implements password-base encryption algorithm with
* SHA1 digest and the following Ciphers (in CBC mode, where applicable):
* - DESede cipher and
* - RC2 Cipher with 40-bit or 128-bit effective key length and
* - RC4 Cipher with 40-bit or 128-bit effective key length
* as defined by PKCS #12 version 1.0 standard.
*
* @author Valerie Peng
* @see javax.crypto.CipherSpi
*/
final class PKCS12PBECipherCore {
// TBD: replace CipherCore with a CipherSpi object to simplify maintenance
private CipherCore cipher;
private int blockSize;
private int keySize;
private int keyLength; // in bits
private String algo = null;
private String pbeAlgo = null;
private byte[] salt = null;
private int iCount = 0;
private static final int DEFAULT_SALT_LENGTH = 20;
private static final int DEFAULT_COUNT = 1024;
static final int CIPHER_KEY = 1;
static final int CIPHER_IV = 2;
static final int MAC_KEY = 3;
// Uses default hash algorithm (SHA-1)
static byte[] derive(char[] chars, byte[] salt,
int ic, int n, int type) {
return derive(chars, salt, ic, n, type, "SHA-1", 64);
}
// Uses supplied hash algorithm
static byte[] derive(char[] chars, byte[] salt, int ic, int n, int type,
String hashAlgo, int blockLength) {
// Add in trailing NULL terminator. Special case:
// no terminator if password is "\0".
int length = chars.length*2;
if (length == 2 && chars[0] == 0) {
chars = new char[0];
length = 0;
} else {
length += 2;
}
byte[] passwd = new byte[length];
for (int i = 0, j = 0; i < chars.length; i++, j+=2) {
passwd[j] = (byte) ((chars[i] >>> 8) & 0xFF);
passwd[j+1] = (byte) (chars[i] & 0xFF);
}
byte[] key = new byte[n];
try {
MessageDigest sha = MessageDigest.getInstance(hashAlgo);
int v = blockLength;
int u = sha.getDigestLength();
int c = roundup(n, u) / u;
byte[] D = new byte[v];
int s = roundup(salt.length, v);
int p = roundup(passwd.length, v);
byte[] I = new byte[s + p];
Arrays.fill(D, (byte)type);
concat(salt, I, 0, s);
concat(passwd, I, s, p);
Arrays.fill(passwd, (byte) 0x00);
byte[] Ai;
byte[] B = new byte[v];
int i = 0;
for (; ; i++, n -= u) {
sha.update(D);
sha.update(I);
Ai = sha.digest();
for (int r = 1; r < ic; r++)
Ai = sha.digest(Ai);
System.arraycopy(Ai, 0, key, u * i, Math.min(n, u));
if (i + 1 == c) {
break;
}
concat(Ai, B, 0, v);
addOne(v, B); // add 1 into B
for (int j = 0; j < I.length; j += v) {
addTwo(v, B, I, j); // add B into I from j
}
}
Arrays.fill(I, (byte)0);
} catch (Exception e) {
throw new RuntimeException("internal error: " + e);
}
return key;
}
// Add 1 to b (as integer)
private static void addOne(int len, byte[] b) {
for (int i = len - 1; i >= 0; i--) {
if ((b[i] & 0xff) != 255) {
b[i]++;
break;
} else {
b[i] = 0;
}
}
}
// Add src (as integer) to dst from offset (as integer)
private static void addTwo(int len, byte[] src, byte[] dst, int offset) {
int carry = 0;
for (int i = len - 1; i >= 0; i--) {
int sum = (src[i] & 0xff) + (dst[i + offset] & 0xff) + carry;
carry = sum >> 8;
dst[i + offset] = (byte)sum;
}
}
private static int roundup(int x, int y) {
return ((x + (y - 1)) / y) * y;
}
private static void concat(byte[] src, byte[] dst, int start, int len) {
if (src.length == 0) {
return;
}
int loop = len / src.length;
int off, i;
for (i = 0, off = 0; i < loop; i++, off += src.length)
System.arraycopy(src, 0, dst, off + start, src.length);
System.arraycopy(src, 0, dst, off + start, len - off);
}
PKCS12PBECipherCore(String symmCipherAlg, int defKeySize)
throws NoSuchAlgorithmException {
algo = symmCipherAlg;
keyLength = defKeySize * 8;
if (algo.equals("RC4")) {
pbeAlgo = "PBEWithSHA1AndRC4_" + keyLength;
} else {
SymmetricCipher symmCipher = null;
if (algo.equals("DESede")) {
symmCipher = new DESedeCrypt();
pbeAlgo = "PBEWithSHA1AndDESede";
keyLength = 112; // effective key length
} else if (algo.equals("RC2")) {
symmCipher = new RC2Crypt();
pbeAlgo = "PBEWithSHA1AndRC2_" + keyLength;
} else {
throw new NoSuchAlgorithmException("No Cipher implementation " +
"for PBEWithSHA1And" + algo);
}
blockSize = symmCipher.getBlockSize();
cipher = new CipherCore(symmCipher, blockSize);
cipher.setMode("CBC");
try {
cipher.setPadding("PKCS5Padding");
} catch (NoSuchPaddingException nspe) {
// should not happen
}
}
keySize = defKeySize;
}
void implSetMode(String mode) throws NoSuchAlgorithmException {
if ((mode != null) && (!mode.equalsIgnoreCase("CBC"))) {
throw new NoSuchAlgorithmException("Invalid cipher mode: "
+ mode);
}
}
void implSetPadding(String padding) throws NoSuchPaddingException {
if ((padding != null) &&
(!padding.equalsIgnoreCase("PKCS5Padding"))) {
throw new NoSuchPaddingException("Invalid padding scheme: " +
padding);
}
}
int implGetBlockSize() {
return blockSize;
}
int implGetOutputSize(int inLen) {
return cipher.getOutputSize(inLen);
}
byte[] implGetIV() {
return cipher.getIV();
}
AlgorithmParameters implGetParameters() {
AlgorithmParameters params = null;
if (salt == null) {
// Cipher is not initialized with parameters;
// follow the recommendation in PKCS12 v1.0
// section B.4 to generate salt and iCount.
salt = new byte[DEFAULT_SALT_LENGTH];
SunJCE.getRandom().nextBytes(salt);
iCount = DEFAULT_COUNT;
}
PBEParameterSpec pbeSpec = new PBEParameterSpec(salt, iCount);
try {
params = AlgorithmParameters.getInstance(pbeAlgo,
SunJCE.getInstance());
params.init(pbeSpec);
} catch (NoSuchAlgorithmException nsae) {
// should never happen
throw new RuntimeException(
"SunJCE provider is not configured properly");
} catch (InvalidParameterSpecException ipse) {
// should never happen
throw new RuntimeException("PBEParameterSpec not supported");
}
return params;
}
void implInit(int opmode, Key key, AlgorithmParameterSpec params,
SecureRandom random) throws InvalidKeyException,
InvalidAlgorithmParameterException {
implInit(opmode, key, params, random, null);
}
void implInit(int opmode, Key key, AlgorithmParameterSpec params,
SecureRandom random, CipherSpi cipherImpl)
throws InvalidKeyException,
InvalidAlgorithmParameterException {
char[] passwdChars = null;
salt = null;
iCount = 0;
if (key instanceof javax.crypto.interfaces.PBEKey) {
javax.crypto.interfaces.PBEKey pbeKey =
(javax.crypto.interfaces.PBEKey) key;
passwdChars = pbeKey.getPassword();
salt = pbeKey.getSalt(); // maybe null if unspecified
iCount = pbeKey.getIterationCount(); // maybe 0 if unspecified
} else if (key instanceof SecretKey) {
byte[] passwdBytes;
if (!(key.getAlgorithm().regionMatches(true, 0, "PBE", 0, 3)) ||
(passwdBytes = key.getEncoded()) == null) {
throw new InvalidKeyException("Missing password");
}
passwdChars = new char[passwdBytes.length];
for (int i=0; i© 2015 - 2025 Weber Informatics LLC | Privacy Policy