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/*
* Copyright (c) 2012, 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.io.*;
import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
import java.security.AlgorithmParametersSpi;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.InvalidParameterSpecException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.PBEParameterSpec;
import sun.misc.HexDumpEncoder;
import sun.security.util.*;
/**
* This class implements the parameter set used with password-based
* encryption scheme 2 (PBES2), which is defined in PKCS#5 as follows:
*
* <pre>
* -- PBES2
*
* PBES2Algorithms ALGORITHM-IDENTIFIER ::=
* { {PBES2-params IDENTIFIED BY id-PBES2}, ...}
*
* id-PBES2 OBJECT IDENTIFIER ::= {pkcs-5 13}
*
* PBES2-params ::= SEQUENCE {
* keyDerivationFunc AlgorithmIdentifier {{PBES2-KDFs}},
* encryptionScheme AlgorithmIdentifier {{PBES2-Encs}} }
*
* PBES2-KDFs ALGORITHM-IDENTIFIER ::=
* { {PBKDF2-params IDENTIFIED BY id-PBKDF2}, ... }
*
* PBES2-Encs ALGORITHM-IDENTIFIER ::= { ... }
*
* -- PBKDF2
*
* PBKDF2Algorithms ALGORITHM-IDENTIFIER ::=
* { {PBKDF2-params IDENTIFIED BY id-PBKDF2}, ...}
*
* id-PBKDF2 OBJECT IDENTIFIER ::= {pkcs-5 12}
*
* PBKDF2-params ::= SEQUENCE {
* salt CHOICE {
* specified OCTET STRING,
* otherSource AlgorithmIdentifier {{PBKDF2-SaltSources}}
* },
* iterationCount INTEGER (1..MAX),
* keyLength INTEGER (1..MAX) OPTIONAL,
* prf AlgorithmIdentifier {{PBKDF2-PRFs}} DEFAULT algid-hmacWithSHA1
* }
*
* PBKDF2-SaltSources ALGORITHM-IDENTIFIER ::= { ... }
*
* PBKDF2-PRFs ALGORITHM-IDENTIFIER ::= {
* {NULL IDENTIFIED BY id-hmacWithSHA1} |
* {NULL IDENTIFIED BY id-hmacWithSHA224} |
* {NULL IDENTIFIED BY id-hmacWithSHA256} |
* {NULL IDENTIFIED BY id-hmacWithSHA384} |
* {NULL IDENTIFIED BY id-hmacWithSHA512}, ... }
*
* algid-hmacWithSHA1 AlgorithmIdentifier {{PBKDF2-PRFs}} ::=
* {algorithm id-hmacWithSHA1, parameters NULL : NULL}
*
* id-hmacWithSHA1 OBJECT IDENTIFIER ::= {digestAlgorithm 7}
*
* PBES2-Encs ALGORITHM-IDENTIFIER ::= { ... }
*
* </pre>
*/
abstract class PBES2Parameters extends AlgorithmParametersSpi {
private static final int pkcs5PBKDF2[] =
{1, 2, 840, 113549, 1, 5, 12};
private static final int pkcs5PBES2[] =
{1, 2, 840, 113549, 1, 5, 13};
private static final int hmacWithSHA1[] =
{1, 2, 840, 113549, 2, 7};
private static final int hmacWithSHA224[] =
{1, 2, 840, 113549, 2, 8};
private static final int hmacWithSHA256[] =
{1, 2, 840, 113549, 2, 9};
private static final int hmacWithSHA384[] =
{1, 2, 840, 113549, 2, 10};
private static final int hmacWithSHA512[] =
{1, 2, 840, 113549, 2, 11};
private static final int aes128CBC[] =
{2, 16, 840, 1, 101, 3, 4, 1, 2};
private static final int aes192CBC[] =
{2, 16, 840, 1, 101, 3, 4, 1, 22};
private static final int aes256CBC[] =
{2, 16, 840, 1, 101, 3, 4, 1, 42};
private static ObjectIdentifier pkcs5PBKDF2_OID;
private static ObjectIdentifier pkcs5PBES2_OID;
private static ObjectIdentifier hmacWithSHA1_OID;
private static ObjectIdentifier hmacWithSHA224_OID;
private static ObjectIdentifier hmacWithSHA256_OID;
private static ObjectIdentifier hmacWithSHA384_OID;
private static ObjectIdentifier hmacWithSHA512_OID;
private static ObjectIdentifier aes128CBC_OID;
private static ObjectIdentifier aes192CBC_OID;
private static ObjectIdentifier aes256CBC_OID;
static {
try {
pkcs5PBKDF2_OID = new ObjectIdentifier(pkcs5PBKDF2);
pkcs5PBES2_OID = new ObjectIdentifier(pkcs5PBES2);
hmacWithSHA1_OID = new ObjectIdentifier(hmacWithSHA1);
hmacWithSHA224_OID = new ObjectIdentifier(hmacWithSHA224);
hmacWithSHA256_OID = new ObjectIdentifier(hmacWithSHA256);
hmacWithSHA384_OID = new ObjectIdentifier(hmacWithSHA384);
hmacWithSHA512_OID = new ObjectIdentifier(hmacWithSHA512);
aes128CBC_OID = new ObjectIdentifier(aes128CBC);
aes192CBC_OID = new ObjectIdentifier(aes192CBC);
aes256CBC_OID = new ObjectIdentifier(aes256CBC);
} catch (IOException ioe) {
// should not happen
}
}
// the PBES2 algorithm name
private String pbes2AlgorithmName = null;
// the salt
private byte[] salt = null;
// the iteration count
private int iCount = 0;
// the cipher parameter
private AlgorithmParameterSpec cipherParam = null;
// the key derivation function (default is HmacSHA1)
private ObjectIdentifier kdfAlgo_OID = hmacWithSHA1_OID;
// the encryption function
private ObjectIdentifier cipherAlgo_OID = null;
// the cipher keysize (in bits)
private int keysize = -1;
PBES2Parameters() {
// KDF, encryption & keysize values are set later, in engineInit(byte[])
}
PBES2Parameters(String pbes2AlgorithmName) throws NoSuchAlgorithmException {
int and;
String kdfAlgo = null;
String cipherAlgo = null;
// Extract the KDF and encryption algorithm names
this.pbes2AlgorithmName = pbes2AlgorithmName;
if (pbes2AlgorithmName.startsWith("PBEWith") &&
(and = pbes2AlgorithmName.indexOf("And", 7 + 1)) > 0) {
kdfAlgo = pbes2AlgorithmName.substring(7, and);
cipherAlgo = pbes2AlgorithmName.substring(and + 3);
// Check for keysize
int underscore;
if ((underscore = cipherAlgo.indexOf('_')) > 0) {
int slash;
if ((slash = cipherAlgo.indexOf('/', underscore + 1)) > 0) {
keysize =
Integer.parseInt(cipherAlgo.substring(underscore + 1,
slash));
} else {
keysize =
Integer.parseInt(cipherAlgo.substring(underscore + 1));
}
cipherAlgo = cipherAlgo.substring(0, underscore);
}
} else {
throw new NoSuchAlgorithmException("No crypto implementation for " +
pbes2AlgorithmName);
}
switch (kdfAlgo) {
case "HmacSHA1":
kdfAlgo_OID = hmacWithSHA1_OID;
break;
case "HmacSHA224":
kdfAlgo_OID = hmacWithSHA224_OID;
break;
case "HmacSHA256":
kdfAlgo_OID = hmacWithSHA256_OID;
break;
case "HmacSHA384":
kdfAlgo_OID = hmacWithSHA384_OID;
break;
case "HmacSHA512":
kdfAlgo_OID = hmacWithSHA512_OID;
break;
default:
throw new NoSuchAlgorithmException(
"No crypto implementation for " + kdfAlgo);
}
if (cipherAlgo.equals("AES")) {
this.keysize = keysize;
switch (keysize) {
case 128:
cipherAlgo_OID = aes128CBC_OID;
break;
case 256:
cipherAlgo_OID = aes256CBC_OID;
break;
default:
throw new NoSuchAlgorithmException(
"No Cipher implementation for " + keysize + "-bit " +
cipherAlgo);
}
} else {
throw new NoSuchAlgorithmException("No Cipher implementation for " +
cipherAlgo);
}
}
protected void engineInit(AlgorithmParameterSpec paramSpec)
throws InvalidParameterSpecException
{
if (!(paramSpec instanceof PBEParameterSpec)) {
throw new InvalidParameterSpecException
("Inappropriate parameter specification");
}
this.salt = ((PBEParameterSpec)paramSpec).getSalt().clone();
this.iCount = ((PBEParameterSpec)paramSpec).getIterationCount();
this.cipherParam = ((PBEParameterSpec)paramSpec).getParameterSpec();
}
protected void engineInit(byte[] encoded)
throws IOException
{
String kdfAlgo = null;
String cipherAlgo = null;
DerValue pBES2Algorithms = new DerValue(encoded);
if (pBES2Algorithms.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
if (!pkcs5PBES2_OID.equals(pBES2Algorithms.data.getOID())) {
throw new IOException("PBE parameter parsing error: "
+ "expecting the object identifier for PBES2");
}
if (pBES2Algorithms.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
DerValue pBES2_params = pBES2Algorithms.data.getDerValue();
if (pBES2_params.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
kdfAlgo = parseKDF(pBES2_params.data.getDerValue());
if (pBES2_params.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
cipherAlgo = parseES(pBES2_params.data.getDerValue());
pbes2AlgorithmName = new StringBuilder().append("PBEWith")
.append(kdfAlgo).append("And").append(cipherAlgo).toString();
}
private String parseKDF(DerValue keyDerivationFunc) throws IOException {
String kdfAlgo = null;
if (!pkcs5PBKDF2_OID.equals(keyDerivationFunc.data.getOID())) {
throw new IOException("PBE parameter parsing error: "
+ "expecting the object identifier for PBKDF2");
}
if (keyDerivationFunc.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
DerValue pBKDF2_params = keyDerivationFunc.data.getDerValue();
if (pBKDF2_params.tag != DerValue.tag_Sequence) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 SEQUENCE tag");
}
DerValue specified = pBKDF2_params.data.getDerValue();
// the 'specified' ASN.1 CHOICE for 'salt' is supported
if (specified.tag == DerValue.tag_OctetString) {
salt = specified.getOctetString();
} else {
// the 'otherSource' ASN.1 CHOICE for 'salt' is not supported
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 OCTET STRING tag");
}
iCount = pBKDF2_params.data.getInteger();
DerValue keyLength = pBKDF2_params.data.getDerValue();
if (keyLength.tag == DerValue.tag_Integer) {
keysize = keyLength.getInteger() * 8; // keysize (in bits)
}
if (pBKDF2_params.tag == DerValue.tag_Sequence) {
DerValue prf = pBKDF2_params.data.getDerValue();
kdfAlgo_OID = prf.data.getOID();
if (hmacWithSHA1_OID.equals(kdfAlgo_OID)) {
kdfAlgo = "HmacSHA1";
} else if (hmacWithSHA224_OID.equals(kdfAlgo_OID)) {
kdfAlgo = "HmacSHA224";
} else if (hmacWithSHA256_OID.equals(kdfAlgo_OID)) {
kdfAlgo = "HmacSHA256";
} else if (hmacWithSHA384_OID.equals(kdfAlgo_OID)) {
kdfAlgo = "HmacSHA384";
} else if (hmacWithSHA512_OID.equals(kdfAlgo_OID)) {
kdfAlgo = "HmacSHA512";
} else {
throw new IOException("PBE parameter parsing error: "
+ "expecting the object identifier for a HmacSHA key "
+ "derivation function");
}
if (prf.data.available() != 0) {
// parameter is 'NULL' for all HmacSHA KDFs
DerValue parameter = prf.data.getDerValue();
if (parameter.tag != DerValue.tag_Null) {
throw new IOException("PBE parameter parsing error: "
+ "not an ASN.1 NULL tag");
}
}
}
return kdfAlgo;
}
private String parseES(DerValue encryptionScheme) throws IOException {
String cipherAlgo = null;
cipherAlgo_OID = encryptionScheme.data.getOID();
if (aes128CBC_OID.equals(cipherAlgo_OID)) {
cipherAlgo = "AES_128";
// parameter is AES-IV 'OCTET STRING (SIZE(16))'
cipherParam =
new IvParameterSpec(encryptionScheme.data.getOctetString());
keysize = 128;
} else if (aes256CBC_OID.equals(cipherAlgo_OID)) {
cipherAlgo = "AES_256";
// parameter is AES-IV 'OCTET STRING (SIZE(16))'
cipherParam =
new IvParameterSpec(encryptionScheme.data.getOctetString());
keysize = 256;
} else {
throw new IOException("PBE parameter parsing error: "
+ "expecting the object identifier for AES cipher");
}
return cipherAlgo;
}
protected void engineInit(byte[] encoded, String decodingMethod)
throws IOException
{
engineInit(encoded);
}
protected <T extends AlgorithmParameterSpec>
T engineGetParameterSpec(Class<T> paramSpec)
throws InvalidParameterSpecException
{
if (PBEParameterSpec.class.isAssignableFrom(paramSpec)) {
return paramSpec.cast(
new PBEParameterSpec(this.salt, this.iCount, this.cipherParam));
} else {
throw new InvalidParameterSpecException
("Inappropriate parameter specification");
}
}
protected byte[] engineGetEncoded() throws IOException {
DerOutputStream out = new DerOutputStream();
DerOutputStream pBES2Algorithms = new DerOutputStream();
pBES2Algorithms.putOID(pkcs5PBES2_OID);
DerOutputStream pBES2_params = new DerOutputStream();
DerOutputStream keyDerivationFunc = new DerOutputStream();
keyDerivationFunc.putOID(pkcs5PBKDF2_OID);
DerOutputStream pBKDF2_params = new DerOutputStream();
pBKDF2_params.putOctetString(salt); // choice: 'specified OCTET STRING'
pBKDF2_params.putInteger(iCount);
pBKDF2_params.putInteger(keysize / 8); // derived key length (in octets)
DerOutputStream prf = new DerOutputStream();
// algorithm is id-hmacWithSHA1/SHA224/SHA256/SHA384/SHA512
prf.putOID(kdfAlgo_OID);
// parameters is 'NULL'
prf.putNull();
pBKDF2_params.write(DerValue.tag_Sequence, prf);
keyDerivationFunc.write(DerValue.tag_Sequence, pBKDF2_params);
pBES2_params.write(DerValue.tag_Sequence, keyDerivationFunc);
DerOutputStream encryptionScheme = new DerOutputStream();
// algorithm is id-aes128-CBC or id-aes256-CBC
encryptionScheme.putOID(cipherAlgo_OID);
// parameters is 'AES-IV ::= OCTET STRING (SIZE(16))'
if (cipherParam != null && cipherParam instanceof IvParameterSpec) {
encryptionScheme.putOctetString(
((IvParameterSpec)cipherParam).getIV());
} else {
throw new IOException("Wrong parameter type: IV expected");
}
pBES2_params.write(DerValue.tag_Sequence, encryptionScheme);
pBES2Algorithms.write(DerValue.tag_Sequence, pBES2_params);
out.write(DerValue.tag_Sequence, pBES2Algorithms);
return out.toByteArray();
}
protected byte[] engineGetEncoded(String encodingMethod)
throws IOException
{
return engineGetEncoded();
}
/*
* Returns a formatted string describing the parameters.
*
* The algorithn name pattern is: "PBEWith<prf>And<encryption>"
* where <prf> is one of: HmacSHA1, HmacSHA224, HmacSHA256, HmacSHA384,
* or HmacSHA512, and <encryption> is AES with a keysize suffix.
*/
protected String engineToString() {
return pbes2AlgorithmName;
}
public static final class General extends PBES2Parameters {
public General() throws NoSuchAlgorithmException {
super();
}
}
public static final class HmacSHA1AndAES_128 extends PBES2Parameters {
public HmacSHA1AndAES_128() throws NoSuchAlgorithmException {
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