jens@16: //
jens@16: //  MYASN1Object.h
jens@16: //  MYCrypto-iPhone
jens@16: //
jens@16: //  Created by Jens Alfke on 5/28/09.
jens@16: //  Copyright 2009 Jens Alfke. All rights reserved.
jens@16: //
jens@16: 
jens@16: #import <Foundation/Foundation.h>
jens@16: 
jens@16: 
jens@19: /* A generic ASN.1 data value. The BER parser instantiates these to represent parsed values that
jens@19:     it doesn't know how to represent otherwise.
jens@19:     This is mostly used internally by MYParsedCertificate. */
jens@16: @interface MYASN1Object : NSObject
jens@16: {
jens@16:     @private
jens@16:     uint32_t _tag;
jens@16:     uint8_t _tagClass;
jens@16:     BOOL _constructed;
jens@16:     NSData *_value;
jens@16:     NSArray *_components;
jens@16: }
jens@16: 
jens@16: - (id) initWithTag: (uint32_t)tag
jens@16:            ofClass: (uint8_t)tagClass 
jens@16:        constructed: (BOOL)constructed
jens@16:              value: (NSData*)value;
jens@16: - (id) initWithTag: (uint32_t)tag
jens@16:            ofClass: (uint8_t)tagClass 
jens@16:         components: (NSArray*)components;
jens@16: 
jens@16: @property (readonly) uint32_t tag;
jens@16: @property (readonly) uint8_t tagClass;
jens@16: @property (readonly) BOOL constructed;
jens@16: @property (readonly) NSData *value;
jens@16: @property (readonly) NSArray *components;
jens@16: 
jens@16: + (NSString*) dump: (id)object;
jens@16: 
jens@16: @end
jens@16: 
jens@16: 
jens@19: /* An ASN.1 "big" (arbitrary-length) integer.
jens@19:     The value contains the bytes of the integer, in big-endian order.
jens@19:     This is mostly used internally by MYParsedCertificate. */
jens@16: @interface MYASN1BigInteger : MYASN1Object
jens@21: - (id) initWithSignedData: (NSData*)signedData;
jens@21: - (id) initWithUnsignedData: (NSData*) unsignedData;
jens@21: @property (readonly) NSData *signedData, *unsignedData;
jens@16: @end
jens@16: 
jens@16: 
jens@19: /* An ordered string of bits, as used in ASN.1.
jens@16:     This differs from NSData in that it need not occupy a whole number of bytes;
jens@19:     that is, the number of bits need not be a multiple of 8.
jens@19:     This is mostly used internally by MYParsedCertificate. */
jens@16: @interface MYBitString : NSObject 
jens@16: {
jens@19:     @private
jens@16:     NSData *_bits;
jens@16:     NSUInteger _bitCount;
jens@16: }
jens@16: 
jens@16: - (id)initWithBits: (NSData*)bits count: (NSUInteger)bitCount;
jens@19: + (MYBitString*) bitStringWithData: (NSData*)bits;
jens@16: 
jens@16: @property (readonly, nonatomic) NSData *bits;
jens@16: @property (readonly, nonatomic) NSUInteger bitCount;
jens@16: 
jens@16: @end