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/********************************************************************************/
/* */
/* Macro and Structure Definitions for the X509 Commands and Functions. */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: TpmAsn1.h 1519 2019-11-15 20:43:51Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
/* 1. Copyright Licenses: */
/* */
/* - Trusted Computing Group (TCG) grants to the user of the source code in */
/* this specification (the "Source Code") a worldwide, irrevocable, */
/* nonexclusive, royalty free, copyright license to reproduce, create */
/* derivative works, distribute, display and perform the Source Code and */
/* derivative works thereof, and to grant others the rights granted herein. */
/* */
/* - The TCG grants to the user of the other parts of the specification */
/* (other than the Source Code) the rights to reproduce, distribute, */
/* display, and perform the specification solely for the purpose of */
/* developing products based on such documents. */
/* */
/* 2. Source Code Distribution Conditions: */
/* */
/* - Redistributions of Source Code must retain the above copyright licenses, */
/* this list of conditions and the following disclaimers. */
/* */
/* - Redistributions in binary form must reproduce the above copyright */
/* licenses, this list of conditions and the following disclaimers in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* 3. Disclaimers: */
/* */
/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
/* information on specification licensing rights available through TCG */
/* membership agreements. */
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/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
/* */
/* - Without limitation, TCG and its members and licensors disclaim all */
/* liability, including liability for infringement of any proprietary */
/* rights, relating to use of information in this specification and to the */
/* implementation of this specification, and TCG disclaims all liability for */
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/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2019 */
/* */
/********************************************************************************/
// 10.1.15 TpmAsn1.h
// 10.1.15.1 Introduction
// This file contains the macro and structure definitions for the X509 commands and functions.
#ifndef _TPMASN1_H_
#define _TPMASN1_H_
// 10.1.15.2 Includes
#include "Tpm.h"
#include "OIDs.h"
// 10.1.15.3 Defined Constants
// 10.1.15.3.1 ASN.1 Universal Types (Class 00b
#define ASN1_EOC 0x00
#define ASN1_BOOLEAN 0x01
#define ASN1_INTEGER 0x02
#define ASN1_BITSTRING 0x03
#define ASN1_OCTET_STRING 0x04
#define ASN1_NULL 0x05
#define ASN1_OBJECT_IDENTIFIER 0x06
#define ASN1_OBJECT_DESCRIPTOR 0x07
#define ASN1_EXTERNAL 0x08
#define ASN1_REAL 0x09
#define ASN1_ENUMERATED 0x0A
#define ASN1_EMBEDDED 0x0B
#define ASN1_UTF8String 0x0C
#define ASN1_RELATIVE_OID 0x0D
#define ASN1_SEQUENCE 0x10 // Primitive + Constructed + 0x10
#define ASN1_SET 0x11 // Primitive + Constructed + 0x11
#define ASN1_NumericString 0x12
#define ASN1_PrintableString 0x13
#define ASN1_T61String 0x14
#define ASN1_VideoString 0x15
#define ASN1_IA5String 0x16
#define ASN1_UTCTime 0x17
#define ASN1_GeneralizeTime 0x18
#define ASN1_VisibleString 0x1A
#define ASN1_GeneralString 0x1B
#define ASN1_UniversalString 0x1C
#define ASN1_CHARACTER STRING 0x1D
#define ASN1_BMPString 0x1E
#define ASN1_CONSTRUCTED 0x20
#define ASN1_APPLICAIION_SPECIFIC 0xA0
#define ASN1_CONSTRUCTED_SEQUENCE (ASN1_SEQUENCE + ASN1_CONSTRUCTED)
#define MAX_DEPTH 10 // maximum push depth for marshaling context.
// 10.1.15.4 Macros
// 10.1.15.4.1 Unmarshaling Macros
#ifndef VERIFY
#define VERIFY(_X_) {if(!(_X_)) goto Error; }
#endif
// Checks the validity of the size making sure that there is no wrap around
#define CHECK_SIZE(context, length) \
VERIFY( (((length) + (context)->offset) >= (context)->offset) \
&& (((length) + (context)->offset) <= (context)->size))
#define NEXT_OCTET(context) ((context)->buffer[(context)->offset++])
#define PEEK_NEXT(context) ((context)->buffer[(context)->offset])
// 10.1.15.4.2 Marshaling Macros Marshaling works in reverse order. The offset is set to the top of
// the buffer and, as the buffer is filled, offset counts down to zero. When the full thing is
// encoded it can be moved to the top of the buffer. This happens when the last context is closed.
#define CHECK_SPACE(context, length) VERIFY(context->offset > length)
// 10.1.15.5 Structures
typedef struct ASN1UnmarshalContext {
BYTE *buffer; // pointer to the buffer
INT16 size; // size of the buffer (a negative number indicates
// a parsing failure).
INT16 offset; // current offset into the buffer (a negative number
// indicates a parsing failure). Not used
BYTE tag; // The last unmarshaled tag
} ASN1UnmarshalContext;
typedef struct ASN1MarshalContext {
BYTE *buffer; // pointer to the start of the buffer
INT16 offset; // place on the top where the last entry was added
// items are added from the bottom up.
INT16 end; // the end offset of the current value
INT16 depth; // how many pushed end values.
INT16 ends[MAX_DEPTH];
} ASN1MarshalContext;
#endif // _TPMASN1_H_
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