Examples of org.apache.harmony.security.asn1.ASN1Choice

Package org.apache.harmony.security.asn1

Examples of org.apache.harmony.security.asn1.ASN1Choice

org.apache.harmony.security.asn1.ASN1Implicit
etf.org/rfc/rfc3280.txt) Time ::= CHOICE { utcTime UTCTime, generalTime GeneralizedTime } Validity ::= SEQUENCE { notBefore Time, notAfter Time } 1)First approach: No application class to represent ASN.1 Time notation The Time notation is a choice of different time formats: UTC and Generalized. Both of them are mapped to java.util.Date object, so an application class that represents ASN.1 Validity notation may keep values as Date objects. So a custom ASN.1 Time choice type should map its notation to Date object. class Time { // custom ASN.1 choice class: maps Time to is notation public static final ASN1Choice asn1 = new ASN1Choice(new ASN1Type[] { ASN1GeneralizedTime.asn1, ASN1UTCTime.asn1 }) { public int getIndex(java.lang.Object object) { return 0; // always encode as ASN1GeneralizedTime } public Object getObjectToEncode(Object object) { // A value to be encoded value is a Date object // pass it to custom time class return object; } }; } class Validity { private Date notBefore; // choice as Date private Date notAfter; // choice as Date ... // constructors and other methods go here // custom ASN.1 sequence class: maps Validity class to is notation public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {Time.asn1, Time.asn1 }) { protected Object getObject(Object[] values) { // ASN.1 Time choice passed Data object - use it return new Validity((Date) values[0], (Date) values[1]); } protected void getValues(Object object, Object[] values) { Validity validity = (Validity) object; // pass Date objects to ASN.1 Time choice values[0] = validity.notBefore; values[1] = validity.notAfter; } } } 2)Second approach: There is an application class to represent ASN.1 Time notation If it is a matter what time format should be used to decode/encode Date objects a class to represent ASN.1 Time notation must be created. For example, class Time { private Date utcTime; private Date gTime; ... // constructors and other methods go here // custom ASN.1 choice class: maps Time to is notation public static final ASN1Choice asn1 = new ASN1Choice(new ASN1Type[] { ASN1GeneralizedTime.asn1, ASN1UTCTime.asn1 }) { public Object getDecodedObject(BerInputStream in) { // create Time object to pass as decoded value Time time = new Time(); if (in.choiceIndex==0) { // we decoded GeneralizedTime // store decoded Date value in corresponding field time.gTime = in.content; // return it return time; } else { // we decoded UTCTime // store decoded Date value in corresponding field time.utcTime = in.content; // return it return time; } } public int getIndex(java.lang.Object object) { Time time = (Time)object; if(time.utcTime!=null){ // encode Date as UTCTime return 1; } else { // otherwise encode Date as GeneralizedTime return 0; } } public Object getObjectToEncode(Object object) { Time time = (Time)object; if(time.utcTime!=null){ // encode Date as UTCTime return 1; } else { // otherwise encode Date as GeneralizedTime return 0; } } }; } So now Validity class must keep all values in Time object and its custom ASN.1 sequence class must handle this class of objects class Validity { private Time notBefore; // now it is a Time!!! private Time notAfter; // now it is a Time!!! ... // constructors and other methods go here // custom ASN.1 sequence class: maps Validity class to is notation public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {Time.asn1, Time.asn1 }) { protected Object getObject(Object[] values) { // We've gotten Time objects here !!! return new Validity((Time) values[0], (Time) values[1]); } protected void getValues(Object object, Object[] values) { Validity validity = (Validity) object; // pass Time objects to ASN.1 Time choice values[0] = validity.notBefore; values[1] = validity.notAfter; } } } @see http://asn1.elibel.tm.fr/en/standards/index.htm

    //
    //


    public void test_ExplicitChoice() throws IOException {


        ASN1Choice choice = new ASN1Choice(new ASN1Type[] { ASN1Boolean
                .getInstance() }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }

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    /**
     * TODO Put method description here
     */
    public void testChoiceOfChoice() throws Exception {


        ASN1Choice choice1 = new ASN1Choice(new ASN1Type[] {
                ASN1Oid.getInstance(), // first
                ASN1Boolean.getInstance(),// second: decoded component
                ASN1Integer.getInstance() // third
                }) {


            public Object getDecodedObject(BerInputStream in)
                    throws IOException {


                assertEquals("choice1", 1, in.choiceIndex);


                return in.content;
            }


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        ASN1Choice choice2 = new ASN1Choice(new ASN1Type[] { choice1, // first: decoded component
                ASN1BitString.getInstance() // second
                }) {


            public Object getDecodedObject(BerInputStream in)
                    throws IOException {


                assertEquals("choice2", 0, in.choiceIndex);


                return in.content;
            }


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        Boolean b = (Boolean) choice2.decode(new byte[] { 0x01, 0x01, 0x00 });


        assertTrue(b == Boolean.FALSE);
    }

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    /**
     * TODO Put method description here
     */
    public void testDistinctTags() throws Exception {


        ASN1Choice choice1 = new ASN1Choice(new ASN1Type[] {
                ASN1Boolean.getInstance(),// component to be checked
                ASN1Oid.getInstance(), ASN1Integer.getInstance() }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        // two ASN.1 booleans
        try {
            new ASN1Choice(new ASN1Type[] { choice1, //
                    ASN1Boolean.getInstance() // component to be checked
                    }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }


                public int getIndex(Object obj) {
                    return 0;
                }
            };
            fail("No expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
        }


        // ASN.1 ANY
        try {
            new ASN1Choice(new ASN1Type[] { choice1,//
                    ASN1Any.getInstance() // component to be checked
                    }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }


                public int getIndex(Object obj) {
                    return 0;
                }
            };
            fail("No expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
        }


        // two choices
        ASN1Choice choice2 = new ASN1Choice(new ASN1Type[] {
                ASN1BitString.getInstance(), //
                ASN1Boolean.getInstance() //component to be checked
                }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        try {
            new ASN1Choice(new ASN1Type[] { choice1, choice2 }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }

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        }
    }


    public void testChoiceInSequenceOf() throws IOException {


        ASN1Choice choice = new ASN1Choice(new ASN1Type[] {
                ASN1Boolean.getInstance(), ASN1Integer.getInstance() }) {


            public int getIndex(Object object) {
                if (object instanceof Boolean) {
                    return 0; // ASN1Boolean

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    //
    //


    public void test_ExplicitChoice() throws IOException {


        ASN1Choice choice = new ASN1Choice(new ASN1Type[] { ASN1Boolean
                .getInstance() }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }

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    /**
     * TODO Put method description here
     */
    public void testChoiceOfChoice() throws Exception {


        ASN1Choice choice1 = new ASN1Choice(new ASN1Type[] {
                ASN1Oid.getInstance(), // first
                ASN1Boolean.getInstance(),// second: decoded component
                ASN1Integer.getInstance() // third
                }) {


            public Object getDecodedObject(BerInputStream in)
                    throws IOException {


                assertEquals("choice1", 1, in.choiceIndex);


                return in.content;
            }


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        ASN1Choice choice2 = new ASN1Choice(new ASN1Type[] { choice1, // first: decoded component
                ASN1BitString.getInstance() // second
                }) {


            public Object getDecodedObject(BerInputStream in)
                    throws IOException {


                assertEquals("choice2", 0, in.choiceIndex);


                return in.content;
            }


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        Boolean b = (Boolean) choice2.decode(new byte[] { 0x01, 0x01, 0x00 });


        assertTrue(b == Boolean.FALSE);
    }

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    /**
     * TODO Put method description here
     */
    public void testDistinctTags() throws Exception {


        ASN1Choice choice1 = new ASN1Choice(new ASN1Type[] {
                ASN1Boolean.getInstance(),// component to be checked
                ASN1Oid.getInstance(), ASN1Integer.getInstance() }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        // two ASN.1 booleans
        try {
            new ASN1Choice(new ASN1Type[] { choice1, //
                    ASN1Boolean.getInstance() // component to be checked
                    }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }


                public int getIndex(Object obj) {
                    return 0;
                }
            };
            fail("No expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
        }


        // ASN.1 ANY
        try {
            new ASN1Choice(new ASN1Type[] { choice1,//
                    ASN1Any.getInstance() // component to be checked
                    }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }


                public int getIndex(Object obj) {
                    return 0;
                }
            };
            fail("No expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
        }


        // two choices
        ASN1Choice choice2 = new ASN1Choice(new ASN1Type[] {
                ASN1BitString.getInstance(), //
                ASN1Boolean.getInstance() //component to be checked
                }) {


            public Object getObjectToEncode(Object obj) {
                return obj;
            }


            public int getIndex(Object obj) {
                return 0;
            }
        };


        try {
            new ASN1Choice(new ASN1Type[] { choice1, choice2 }) {


                public Object getObjectToEncode(Object obj) {
                    return obj;
                }

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                // [UNIVERSAL 5] Boolean
                new Object[] {
                        Boolean.FALSE,
                        new byte[] { 0x25, 0x03, 0x01, 0x01, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_UNIVERSAL, 5,
                                ASN1Boolean.getInstance()) },


                // [APPLICATION 5] Boolean
                new Object[] {
                        Boolean.FALSE,
                        new byte[] { 0x65, 0x03, 0x01, 0x01, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_APPLICATION, 5,
                                ASN1Boolean.getInstance()) },


                // [CONTEXT-SPECIFIC 5] Boolean
                new Object[] {
                        Boolean.FALSE,
                        new byte[] { (byte) 0xA5, 0x03, 0x01, 0x01, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_CONTEXTSPECIFIC,
                                5, ASN1Boolean.getInstance()) },


                // [5] Boolean (default = CONTEXT-SPECIFIC)
                new Object[] { Boolean.FALSE,
                        new byte[] { (byte) 0xA5, 0x03, 0x01, 0x01, 0x00 },
                        new ASN1Explicit(5, ASN1Boolean.getInstance()) },


                // [PRIVATE 5] Boolean
                new Object[] {
                        Boolean.FALSE,
                        new byte[] { (byte) 0xE5, 0x03, 0x01, 0x01, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_PRIVATE, 5,
                                ASN1Boolean.getInstance()) },


                //
                // Boolean = true
                //


                // [UNIVERSAL 5] Boolean
                new Object[] {
                        Boolean.TRUE,
                        new byte[] { 0x25, 0x03, 0x01, 0x01, (byte) 0xFF },
                        new ASN1Explicit(ASN1Constants.CLASS_UNIVERSAL, 5,
                                ASN1Boolean.getInstance()) },


                // [APPLICATION 5] Boolean
                new Object[] {
                        Boolean.TRUE,
                        new byte[] { 0x65, 0x03, 0x01, 0x01, (byte) 0xFF },
                        new ASN1Explicit(ASN1Constants.CLASS_APPLICATION, 5,
                                ASN1Boolean.getInstance()) },


                // [CONTEXT-SPECIFIC 5] Boolean
                new Object[] {
                        Boolean.TRUE,
                        new byte[] { (byte) 0xA5, 0x03, 0x01, 0x01, (byte) 0xFF },
                        new ASN1Explicit(ASN1Constants.CLASS_CONTEXTSPECIFIC,
                                5, ASN1Boolean.getInstance()) },


                // [5] Boolean (default = CONTEXT-SPECIFIC)
                new Object[] {
                        Boolean.TRUE,
                        new byte[] { (byte) 0xA5, 0x03, 0x01, 0x01, (byte) 0xFF },
                        new ASN1Explicit(ASN1Constants.CLASS_CONTEXTSPECIFIC,
                                5, ASN1Boolean.getInstance()) },


                // [PRIVATE 5] Boolean
                new Object[] {
                        Boolean.TRUE,
                        new byte[] { (byte) 0xE5, 0x03, 0x01, 0x01, (byte) 0xFF },
                        new ASN1Explicit(ASN1Constants.CLASS_PRIVATE, 5,
                                ASN1Boolean.getInstance()) },
                //
                // SequenceOf - testing constructed ASN.1 type
                //


                // [UNIVERSAL 5] SequenceOf
                new Object[] {
                        new ArrayList(),
                        new byte[] { 0x25, 0x02, 0x30, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_UNIVERSAL, 5,
                                sequence) },


                // [APPLICATION 5] SequenceOf
                new Object[] {
                        new ArrayList(),
                        new byte[] { 0x65, 0x02, 0x30, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_APPLICATION, 5,
                                sequence) },


                // [CONTEXT-SPECIFIC 5] SequenceOf
                new Object[] {
                        new ArrayList(),
                        new byte[] { (byte) 0xA5, 0x02, 0x30, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_CONTEXTSPECIFIC,
                                5, sequence) },


                // [5] SequenceOf (default = CONTEXT-SPECIFIC)
                new Object[] {
                        new ArrayList(),
                        new byte[] { (byte) 0xA5, 0x02, 0x30, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_CONTEXTSPECIFIC,
                                5, sequence) },


                // [PRIVATE 5] SequenceOf
                new Object[] {
                        new ArrayList(),
                        new byte[] { (byte) 0xE5, 0x02, 0x30, 0x00 },
                        new ASN1Explicit(ASN1Constants.CLASS_PRIVATE, 5,
                                sequence) } };
    }

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            public int getIndex(Object obj) {
                return 0;
            }
        };


        ASN1Explicit explicit = new ASN1Explicit(0, choice);


        byte[] encoded = new byte[] { (byte) 0xA0, 0x03, 0x01, 0x01, 0x00 };


        assertEquals("False: ", Boolean.FALSE, explicit.decode(encoded));


        encoded[4] = (byte) 0xFF;


        assertEquals("True: ", Boolean.TRUE, explicit.decode(encoded));
    }

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     * 
     * TYPE1 = [1] IMPLICIT OCTET STRING
     * TYPE2 = [2] IMPLICIT TYPE1
     */
    public void testConsecutiveStringTagging() throws Exception {
        ASN1Implicit type1 = new ASN1Implicit(1, ASN1OctetString.getInstance());


        ASN1Implicit type2 = new ASN1Implicit(2, type1);


        byte[] primitiveEncoding = new byte[] {
        // tag: class(CONTEXT SPECIFIC) + number (2) 
                (byte) 0x82,
                // length
                0x03,
                // value
                0x00, 0x01, 0x02 };


        byte[] constructedEncoding = new byte[] {
        // tag: class(CONTEXT SPECIFIC) + constructed +number (2) 
                (byte) 0xA2,
                // length
                0x00 };


        byte[] array = new byte[] { 0x00, 0x01, 0x02 };


        // decode primitive
        assertTrue(Arrays.equals(array, (byte[]) type2
                .decode(primitiveEncoding)));


        // encode primitive
        assertTrue(Arrays.equals(primitiveEncoding, type2.encode(array)));


        // decode constructed
        try {
            type2.decode(constructedEncoding);
            fail("No expected ASN1Exception");
        } catch (ASN1Exception e) {
            // FIXME any other check instead of comparing the message???
            assertEquals(
                    "ASN.1 octetstring: constructed identifier at [0]. Not valid for DER.",

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