81 lines
3.9 KiB
C
81 lines
3.9 KiB
C
/******************************************************************************
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* Filename: pka_doc.h
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* Revised: 2020-02-14 11:30:20 +0100 (Fri, 14 Feb 2020)
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* Revision: 56760
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*
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* Copyright (c) 2015 - 2017, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of the ORGANIZATION nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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//! \addtogroup pka_api
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//! @{
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//! \section sec_pka Introduction
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//!
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//! The PKA (Public Key Accelerator) API provides access to the Large Number
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//! Engine (LNME). The LNME allows for efficient math operations on numbers
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//! larger than those that fit within the ALU of the system CPU. It is significantly faster
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//! to perform these operations using the LNME than implementing the same
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//! functionality in software using regular word-wise math operations. While the
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//! LNME runs in the background, the system CPU may perform other operations
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//! or be turned off.
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//!
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//! The LNME supports both primitive math operations and serialized primitive
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//! operations (sequencer operations).
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//! - Addition
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//! - Multiplication
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//! - Comparison
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//! - Modulo
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//! - Inverse Modulo
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//! - ECC Point Addition (including point doubling)
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//! - ECC Scalar Multiplication
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//!
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//! These primitives and sequencer operations can be used to implement various
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//! public key encryption schemes.
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//! It is possible to implement the following schemes using the operations mentioned above:
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//! - RSA encryption and decryption
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//! - RSA sign and verify
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//! - DHE (Diffie-Hellman Key Exchange)
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//! - ECDH (Elliptic Curve Diffie-Hellman Key Exchange)
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//! - ECDSA (Elliptic Curve Digital Signature Algorithm)
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//! - ECIES (Elliptic Curve Integrated Encryption Scheme)
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//!
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//! The DriverLib PKA functions copy the relevant parameters into the dedicated
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//! PKA RAM. The LNME requires these parameters be present and correctly
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//! formatted in the PKA RAM and not system RAM. They are copied word-wise as
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//! the PKA RAM does not support byte-wise access. The CPU handles the alignment differences
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//! during the memory copy operation. Forcing buffer alignment in system RAM results
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//! in a significant speedup of the copy operation compared to unaligned buffers.
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//!
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//! When the operation completes, the result is copied back into
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//! a buffer in system RAM specified by the application. The PKA RAM is then cleared
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//! to prevent sensitive keying material from remaining in PKA RAM.
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//!
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//!
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//! @}
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