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Diffstat (limited to 'src/tpm2/MathOnByteBuffers_fp.h')
| -rw-r--r-- | src/tpm2/MathOnByteBuffers_fp.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/tpm2/MathOnByteBuffers_fp.h b/src/tpm2/MathOnByteBuffers_fp.h new file mode 100644 index 0000000..42f6112 --- /dev/null +++ b/src/tpm2/MathOnByteBuffers_fp.h @@ -0,0 +1,110 @@ +/********************************************************************************/ +/* */ +/* Math functions performed with canonical integers in byte buffers */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: MathOnByteBuffers_fp.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. */ +/* */ +/* - 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 */ +/* cost of procurement of substitute goods or services, lost profits, loss */ +/* of use, loss of data or any incidental, consequential, direct, indirect, */ +/* or special damages, whether under contract, tort, warranty or otherwise, */ +/* arising in any way out of use or reliance upon this specification or any */ +/* information herein. */ +/* */ +/* (c) Copyright IBM Corp. and others, 2016 - 2019 */ +/* */ +/********************************************************************************/ + +#ifndef MATHONBYTEBUFFERS_FP_H +#define MATHONBYTEBUFFERS_FP_H + +LIB_EXPORT int +UnsignedCompareB( + UINT32 aSize, // IN: size of a + const BYTE *a, // IN: a + UINT32 bSize, // IN: size of b + const BYTE *b // IN: b + ); +int +SignedCompareB( + const UINT32 aSize, // IN: size of a + const BYTE *a, // IN: a buffer + const UINT32 bSize, // IN: size of b + const BYTE *b // IN: b buffer + ); +TPM_RC +ModExpB( + UINT32 cSize, // IN: the size of the output buffer. It will + // need to be the same size as the modulus + BYTE *c, // OUT: the buffer to receive the results + // (c->size must be set to the maximum size + // for the returned value) + const UINT32 mSize, + const BYTE *m, // IN: number to exponentiate + const UINT32 eSize, + const BYTE *e, // IN: power + const UINT32 nSize, + const BYTE *n // IN: modulus + ); +LIB_EXPORT TPM_RC +DivideB( + const TPM2B *n, // IN: numerator + const TPM2B *d, // IN: denominator + TPM2B *q, // OUT: quotient + TPM2B *r // OUT: remainder + ); +UINT16 +AdjustNumberB( + TPM2B *num, + UINT16 requestedSize + ); +TPM2B * +ShiftLeft( + TPM2B *value // IN/OUT: value to shift and shifted value out + ); + +#endif |