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4054af0c42
* Sebastian's HQC merge request * Clean up changes to common infrastructure * Fix Bitmask macro It assumed that ``unsigned long`` was 64 bit * Remove maxlen from nistseedexpander It's a complicated thing to handle because the value is larger than size_t supports on 32-bit platforms * Initialize buffers to help linter * Add Nistseedexpander test * Resolve UB in gf2x.c Some of the shifts could be larger than WORD_SIZE_BITS, ie. larger than the width of uint64_t. This apparently on Intel gets interpreted as the shift mod 64, but on ARM something else happened. * Fix Windows complaints * rename log, exp which appear to be existing functions on MS * Solve endianness problems * remove all spaces before ';' * Fix duplicate consistency * Fix duplicate consistency * Fix complaints by MSVC about narrowing int * Add nistseedexpander.obj to COMMON_OBJECTS_NOPATH * astyle format util.[ch] * add util.h to makefile * Sort includes in util.h * Fix more Windows MSVC complaints Co-authored-by: Sebastian Verschoor <sebastian@zeroknowledge.me> Co-authored-by: Thom Wiggers <thom@thomwiggers.nl>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/**
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* @file tensor.c
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* @brief Implementation of tensor code
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*/
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#include "bch.h"
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#include "parameters.h"
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#include "repetition.h"
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#include "tensor.h"
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#include <stdint.h>
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/**
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* @brief Encoding the message m to a code word em using the tensor code
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*
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* First we encode the message using the BCH code, then with the repetition code to obtain
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* a tensor code word.
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*
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* @param[out] em Pointer to an array that is the tensor code word
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* @param[in] m Pointer to an array that is the message
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*/
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void PQCLEAN_HQC1281CCA2_LEAKTIME_tensor_code_encode(uint8_t *em, const uint8_t *m) {
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uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
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PQCLEAN_HQC1281CCA2_LEAKTIME_bch_code_encode(tmp, m);
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PQCLEAN_HQC1281CCA2_LEAKTIME_repetition_code_encode(em, tmp);
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}
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/**
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* @brief Decoding the code word em to a message m using the tensor code
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*
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* @param[out] m Pointer to an array that is the message
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* @param[in] em Pointer to an array that is the code word
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*/
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void PQCLEAN_HQC1281CCA2_LEAKTIME_tensor_code_decode(uint8_t *m, const uint8_t *em) {
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uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
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PQCLEAN_HQC1281CCA2_LEAKTIME_repetition_code_decode(tmp, em);
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PQCLEAN_HQC1281CCA2_LEAKTIME_bch_code_decode(m, tmp);
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}
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