//

 //  MYASN1Object.h

 //  MYCrypto-iPhone

 //

 //  Created by Jens Alfke on 5/28/09.

 //  Copyright 2009 Jens Alfke. All rights reserved.

 //

 #import <Foundation/Foundation.h>

 /* A generic ASN.1 data value. The BER parser instantiates these to represent parsed values that

     it doesn't know how to represent otherwise.

     This is mostly used internally by MYParsedCertificate. */

 @interface MYASN1Object : NSObject

 {

     @private

     uint32_t _tag;

     uint8_t _tagClass;

     BOOL _constructed;

     NSData *_value;

     NSArray *_components;

 }

 - (id) initWithTag: (uint32_t)tag

            ofClass: (uint8_t)tagClass 

        constructed: (BOOL)constructed

              value: (NSData*)value;

 - (id) initWithTag: (uint32_t)tag

            ofClass: (uint8_t)tagClass 

         components: (NSArray*)components;

 @property (readonly) uint32_t tag;

 @property (readonly) uint8_t tagClass;

 @property (readonly) BOOL constructed;

 @property (readonly) NSData *value;

 @property (readonly) NSArray *components;

 + (NSString*) dump: (id)object;

 @end

 /* An ASN.1 "big" (arbitrary-length) integer.

     The value contains the bytes of the integer, in big-endian order.

     This is mostly used internally by MYParsedCertificate. */

 @interface MYASN1BigInteger : MYASN1Object

 - (id) initWithSignedData: (NSData*)signedData;

 - (id) initWithUnsignedData: (NSData*) unsignedData;

 @property (readonly) NSData *signedData, *unsignedData;

 @end

 /* An ordered string of bits, as used in ASN.1.

     This differs from NSData in that it need not occupy a whole number of bytes;

     that is, the number of bits need not be a multiple of 8.

     This is mostly used internally by MYParsedCertificate. */

 @interface MYBitString : NSObject 

 {

     @private

     NSData *_bits;

     NSUInteger _bitCount;

 }

 - (id)initWithBits: (NSData*)bits count: (NSUInteger)bitCount;

 + (MYBitString*) bitStringWithData: (NSData*)bits;

 @property (readonly, nonatomic) NSData *bits;

 @property (readonly, nonatomic) NSUInteger bitCount;

 @end