mirror of https://github.com/wolfSSL/wolfTPM.git
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/* tpm2_asn.h
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*
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* Copyright (C) 2006-2025 wolfSSL Inc.
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*
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* This file is part of wolfTPM.
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*
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* wolfTPM is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfTPM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef WOLFTPM_TPM2_ASN_H
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#define WOLFTPM_TPM2_ASN_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <wolftpm/tpm2.h>
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#include <wolftpm/tpm2_types.h>
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#ifndef WOLFTPM2_NO_WRAPPER
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef MAX_CERT_SZ
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#define MAX_CERT_SZ 2048
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#endif
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/* ASN Error Codes */
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#define TPM_RC_ASN_PARSE (-201) /* ASN parsing error */
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#define TPM_RC_INSUFFICIENT (-202) /* ASN insufficient data */
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#define TPM_RC_VALUE (-203) /* ASN value error (invalid tag) */
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#define TPM_RC_BUFFER (-204) /* ASN buffer error */
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/* ASN.1 Constants */
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enum {
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TPM2_ASN_SEQUENCE = 0x10,
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TPM2_ASN_CONSTRUCTED = 0x20,
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TPM2_ASN_CONTEXT_SPECIFIC = 0x80,
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TPM2_ASN_LONG_LENGTH = 0x80,
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TPM2_ASN_INTEGER = 0x02,
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TPM2_ASN_BIT_STRING = 0x03,
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TPM2_ASN_OCTET_STRING = 0x04,
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TPM2_ASN_TAG_NULL = 0x05,
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TPM2_ASN_OBJECT_ID = 0x06
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};
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#if defined(WOLFTPM2_NO_WOLFCRYPT) || defined(NO_RSA)
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#define RSA_BLOCK_TYPE_1 1
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#define RSA_BLOCK_TYPE_2 2
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#endif
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/* ASN.1 Decoder Types */
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typedef struct DecodedX509 {
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word32 certBegin;
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byte* cert; /* pointer to start of cert */
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word32 certSz;
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byte* publicKey; /* pointer to public key */
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word32 pubKeySz;
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byte* signature; /* pointer to signature */
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word32 sigSz; /* length of signature */
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} DecodedX509;
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/* ASN.1 Decoder Functions */
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WOLFTPM_API int TPM2_ASN_GetLength(const uint8_t* input, word32* inOutIdx, int* len,
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word32 maxIdx);
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WOLFTPM_API int TPM2_ASN_GetLength_ex(const uint8_t* input, word32* inOutIdx, int* len,
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word32 maxIdx, int check);
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WOLFTPM_API int TPM2_ASN_DecodeTag(const uint8_t* input, int inputSz, int* inOutIdx, int* tag_len, uint8_t tag);
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WOLFTPM_API int TPM2_ASN_RsaDecodeSignature(uint8_t** pInput, int inputSz);
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WOLFTPM_API int TPM2_ASN_DecodeX509Cert(uint8_t* input, int inputSz, DecodedX509* x509);
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WOLFTPM_API int TPM2_ASN_DecodeRsaPubKey(uint8_t* input, int inputSz, TPM2B_PUBLIC* pub);
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WOLFTPM_API int TPM2_ASN_RsaUnpadPkcsv15(uint8_t** pSig, int* sigSz);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* !WOLFTPM2_NO_WRAPPER */
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#endif /* WOLFTPM_TPM2_ASN_H */
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