author | jboes |
Fri, 20 Sep 2019 11:07:52 +0100 | |
changeset 58242 | 94bb65cb37d3 |
parent 49547 | 2f3c0bd6b987 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.security; |
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import java.io.IOException; |
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import java.math.BigInteger; |
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import java.util.Arrays; |
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import java.util.regex.Pattern; |
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import sun.security.util.*; |
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/** |
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* An attribute associated with a PKCS12 keystore entry. |
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* The attribute name is an ASN.1 Object Identifier and the attribute |
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* value is a set of ASN.1 types. |
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* |
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* @since 1.8 |
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*/ |
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public final class PKCS12Attribute implements KeyStore.Entry.Attribute { |
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private static final Pattern COLON_SEPARATED_HEX_PAIRS = |
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Pattern.compile("^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2})+$"); |
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private String name; |
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private String value; |
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private final byte[] encoded; |
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private int hashValue = -1; |
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/** |
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* Constructs a PKCS12 attribute from its name and value. |
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* The name is an ASN.1 Object Identifier represented as a list of |
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* dot-separated integers. |
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* A string value is represented as the string itself. |
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* A binary value is represented as a string of colon-separated |
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* pairs of hexadecimal digits. |
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* Multi-valued attributes are represented as a comma-separated |
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* list of values, enclosed in square brackets. See |
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* {@link Arrays#toString(java.lang.Object[])}. |
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* <p> |
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* A string value will be DER-encoded as an ASN.1 UTF8String and a |
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* binary value will be DER-encoded as an ASN.1 Octet String. |
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* |
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* @param name the attribute's identifier |
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* @param value the attribute's value |
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* |
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* @throws NullPointerException if {@code name} or {@code value} |
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* is {@code null} |
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* @throws IllegalArgumentException if {@code name} or |
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* {@code value} is incorrectly formatted |
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*/ |
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public PKCS12Attribute(String name, String value) { |
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if (name == null || value == null) { |
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throw new NullPointerException(); |
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} |
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// Validate name |
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ObjectIdentifier type; |
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try { |
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type = new ObjectIdentifier(name); |
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} catch (IOException e) { |
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throw new IllegalArgumentException("Incorrect format: name", e); |
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} |
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this.name = name; |
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// Validate value |
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int length = value.length(); |
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String[] values; |
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if (length > 1 && |
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value.charAt(0) == '[' && value.charAt(length - 1) == ']') { |
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values = value.substring(1, length - 1).split(", "); |
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} else { |
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values = new String[]{ value }; |
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} |
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this.value = value; |
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try { |
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this.encoded = encode(type, values); |
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} catch (IOException e) { |
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throw new IllegalArgumentException("Incorrect format: value", e); |
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} |
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} |
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/** |
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* Constructs a PKCS12 attribute from its ASN.1 DER encoding. |
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* The DER encoding is specified by the following ASN.1 definition: |
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* <pre> |
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* |
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* Attribute ::= SEQUENCE { |
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* type AttributeType, |
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* values SET OF AttributeValue |
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* } |
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* AttributeType ::= OBJECT IDENTIFIER |
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* AttributeValue ::= ANY defined by type |
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* |
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* </pre> |
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* |
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* @param encoded the attribute's ASN.1 DER encoding. It is cloned |
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* to prevent subsequent modificaion. |
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* |
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* @throws NullPointerException if {@code encoded} is |
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* {@code null} |
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* @throws IllegalArgumentException if {@code encoded} is |
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* incorrectly formatted |
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*/ |
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public PKCS12Attribute(byte[] encoded) { |
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if (encoded == null) { |
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throw new NullPointerException(); |
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} |
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this.encoded = encoded.clone(); |
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try { |
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parse(encoded); |
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} catch (IOException e) { |
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throw new IllegalArgumentException("Incorrect format: encoded", e); |
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} |
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} |
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/** |
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* Returns the attribute's ASN.1 Object Identifier represented as a |
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* list of dot-separated integers. |
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* |
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* @return the attribute's identifier |
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*/ |
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@Override |
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public String getName() { |
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return name; |
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} |
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/** |
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* Returns the attribute's ASN.1 DER-encoded value as a string. |
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* An ASN.1 DER-encoded value is returned in one of the following |
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* {@code String} formats: |
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* <ul> |
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* <li> the DER encoding of a basic ASN.1 type that has a natural |
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* string representation is returned as the string itself. |
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* Such types are currently limited to BOOLEAN, INTEGER, |
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* OBJECT IDENTIFIER, UTCTime, GeneralizedTime and the |
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* following six ASN.1 string types: UTF8String, |
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* PrintableString, T61String, IA5String, BMPString and |
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* GeneralString. |
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* <li> the DER encoding of any other ASN.1 type is not decoded but |
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* returned as a binary string of colon-separated pairs of |
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* hexadecimal digits. |
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* </ul> |
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* Multi-valued attributes are represented as a comma-separated |
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* list of values, enclosed in square brackets. See |
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* {@link Arrays#toString(java.lang.Object[])}. |
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* |
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* @return the attribute value's string encoding |
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*/ |
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@Override |
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public String getValue() { |
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return value; |
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} |
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/** |
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* Returns the attribute's ASN.1 DER encoding. |
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* |
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* @return a clone of the attribute's DER encoding |
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*/ |
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public byte[] getEncoded() { |
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return encoded.clone(); |
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} |
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/** |
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* Compares this {@code PKCS12Attribute} and a specified object for |
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* equality. |
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* |
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* @param obj the comparison object |
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* |
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* @return true if {@code obj} is a {@code PKCS12Attribute} and |
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* their DER encodings are equal. |
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*/ |
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@Override |
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public boolean equals(Object obj) { |
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if (this == obj) { |
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return true; |
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} |
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if (!(obj instanceof PKCS12Attribute)) { |
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return false; |
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} |
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return Arrays.equals(encoded, ((PKCS12Attribute) obj).encoded); |
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} |
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/** |
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* Returns the hashcode for this {@code PKCS12Attribute}. |
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* The hash code is computed from its DER encoding. |
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* |
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* @return the hash code |
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*/ |
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@Override |
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public int hashCode() { |
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int h = hashValue; |
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if (h == -1) { |
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hashValue = h = Arrays.hashCode(encoded); |
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} |
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return h; |
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} |
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/** |
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* Returns a string representation of this {@code PKCS12Attribute}. |
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* |
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* @return a name/value pair separated by an 'equals' symbol |
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*/ |
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@Override |
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public String toString() { |
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return (name + "=" + value); |
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} |
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private byte[] encode(ObjectIdentifier type, String[] values) |
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throws IOException { |
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DerOutputStream attribute = new DerOutputStream(); |
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attribute.putOID(type); |
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DerOutputStream attrContent = new DerOutputStream(); |
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for (String value : values) { |
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if (COLON_SEPARATED_HEX_PAIRS.matcher(value).matches()) { |
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byte[] bytes = |
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new BigInteger(value.replace(":", ""), 16).toByteArray(); |
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if (bytes[0] == 0) { |
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bytes = Arrays.copyOfRange(bytes, 1, bytes.length); |
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} |
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attrContent.putOctetString(bytes); |
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} else { |
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attrContent.putUTF8String(value); |
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} |
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} |
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attribute.write(DerValue.tag_Set, attrContent); |
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DerOutputStream attributeValue = new DerOutputStream(); |
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attributeValue.write(DerValue.tag_Sequence, attribute); |
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return attributeValue.toByteArray(); |
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} |
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private void parse(byte[] encoded) throws IOException { |
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DerInputStream attributeValue = new DerInputStream(encoded); |
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DerValue[] attrSeq = attributeValue.getSequence(2); |
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ObjectIdentifier type = attrSeq[0].getOID(); |
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DerInputStream attrContent = |
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new DerInputStream(attrSeq[1].toByteArray()); |
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DerValue[] attrValueSet = attrContent.getSet(1); |
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String[] values = new String[attrValueSet.length]; |
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String printableString; |
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for (int i = 0; i < attrValueSet.length; i++) { |
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if (attrValueSet[i].tag == DerValue.tag_OctetString) { |
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values[i] = Debug.toString(attrValueSet[i].getOctetString()); |
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} else if ((printableString = attrValueSet[i].getAsString()) |
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!= null) { |
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values[i] = printableString; |
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} else if (attrValueSet[i].tag == DerValue.tag_ObjectId) { |
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values[i] = attrValueSet[i].getOID().toString(); |
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} else if (attrValueSet[i].tag == DerValue.tag_GeneralizedTime) { |
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values[i] = attrValueSet[i].getGeneralizedTime().toString(); |
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} else if (attrValueSet[i].tag == DerValue.tag_UtcTime) { |
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values[i] = attrValueSet[i].getUTCTime().toString(); |
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} else if (attrValueSet[i].tag == DerValue.tag_Integer) { |
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values[i] = attrValueSet[i].getBigInteger().toString(); |
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} else if (attrValueSet[i].tag == DerValue.tag_Boolean) { |
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values[i] = String.valueOf(attrValueSet[i].getBoolean()); |
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} else { |
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values[i] = Debug.toString(attrValueSet[i].getDataBytes()); |
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} |
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} |
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this.name = type.toString(); |
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this.value = values.length == 1 ? values[0] : Arrays.toString(values); |
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} |
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} |