mirror of
https://github.com/henrydcase/pqc.git
synced 2024-11-30 03:11:43 +00:00
255 lines
12 KiB
C
255 lines
12 KiB
C
#include "pack_unpack.h"
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void PQCLEAN_FIRESABER_CLEAN_pack_3bit(uint8_t *bytes, const uint16_t *data) {
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uint32_t j;
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uint32_t offset_data, offset_byte;
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for (j = 0; j < SABER_N / 8; j++) {
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offset_byte = 3 * j;
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offset_data = 8 * j;
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bytes[offset_byte + 0] = (data[offset_data + 0] & 0x7) |
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((data[offset_data + 1] & 0x7) << 3) |
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((data[offset_data + 2] & 0x3) << 6);
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bytes[offset_byte + 1] = ((data[offset_data + 2] >> 2 ) & 0x01) |
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((data[offset_data + 3] & 0x7) << 1) |
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((data[offset_data + 4] & 0x7) << 4) |
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(((data[offset_data + 5]) & 0x01) << 7);
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bytes[offset_byte + 2] = ((data[offset_data + 5] >> 1 ) & 0x03) |
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((data[offset_data + 6] & 0x7) << 2) |
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((data[offset_data + 7] & 0x7) << 5);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_un_pack3bit(const uint8_t *bytes, uint16_t *data) {
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uint32_t j;
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uint32_t offset_data, offset_byte;
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for (j = 0; j < SABER_N / 8; j++) {
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offset_byte = 3 * j;
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offset_data = 8 * j;
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data[offset_data + 0] = (bytes[offset_byte + 0]) & 0x07;
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data[offset_data + 1] = ((bytes[offset_byte + 0]) >> 3 ) & 0x07;
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data[offset_data + 2] = (((bytes[offset_byte + 0]) >> 6 ) & 0x03) |
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(((bytes[offset_byte + 1]) & 0x01) << 2);
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data[offset_data + 3] = ((bytes[offset_byte + 1]) >> 1 ) & 0x07;
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data[offset_data + 4] = ((bytes[offset_byte + 1]) >> 4 ) & 0x07;
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data[offset_data + 5] = (((bytes[offset_byte + 1]) >> 7 ) & 0x01) |
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(((bytes[offset_byte + 2]) & 0x03) << 1);
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data[offset_data + 6] = ((bytes[offset_byte + 2] >> 2) & 0x07);
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data[offset_data + 7] = ((bytes[offset_byte + 2] >> 5) & 0x07);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_pack_4bit(uint8_t *bytes, const uint16_t *data) {
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uint32_t j;
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uint32_t offset_data;
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for (j = 0; j < SABER_N / 2; j++) {
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offset_data = 2 * j;
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bytes[j] = (data[offset_data] & 0x0f) |
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((data[offset_data + 1] & 0x0f) << 4);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_un_pack4bit(const unsigned char *bytes, uint16_t *ar) {
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uint32_t j;
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uint32_t offset_data;
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for (j = 0; j < SABER_N / 2; j++) {
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offset_data = 2 * j;
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ar[offset_data] = bytes[j] & 0x0f;
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ar[offset_data + 1] = (bytes[j] >> 4) & 0x0f;
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_pack_6bit(uint8_t *bytes, const uint16_t *data) {
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uint32_t j;
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uint32_t offset_data, offset_byte;
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for (j = 0; j < SABER_N / 4; j++) {
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offset_byte = 3 * j;
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offset_data = 4 * j;
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bytes[offset_byte + 0] = (data[offset_data + 0] & 0x3f) |
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((data[offset_data + 1] & 0x03) << 6);
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bytes[offset_byte + 1] = ((data[offset_data + 1] >> 2) & 0x0f) |
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((data[offset_data + 2] & 0x0f) << 4);
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bytes[offset_byte + 2] = ((data[offset_data + 2] >> 4) & 0x03) |
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((data[offset_data + 3] & 0x3f) << 2);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_un_pack6bit(const unsigned char *bytes, uint16_t *data) {
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uint32_t j;
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uint32_t offset_data, offset_byte;
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for (j = 0; j < SABER_N / 4; j++) {
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offset_byte = 3 * j;
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offset_data = 4 * j;
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data[offset_data + 0] = bytes[offset_byte + 0] & 0x3f;
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data[offset_data + 1] = ((bytes[offset_byte + 0] >> 6) & 0x03) |
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((bytes[offset_byte + 1] & 0x0f) << 2);
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data[offset_data + 2] = ((bytes[offset_byte + 1] & 0xff) >> 4) |
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((bytes[offset_byte + 2] & 0x03) << 4);
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data[offset_data + 3] = ((bytes[offset_byte + 2] & 0xff) >> 2);
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}
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}
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static void POLVECp2BS(uint8_t *bytes, uint16_t data[SABER_K][SABER_N]) {
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uint32_t i, j;
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uint32_t offset_data, offset_byte, offset_byte1;
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for (i = 0; i < SABER_K; i++) {
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offset_byte1 = i * (SABER_N * 10) / 8;
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for (j = 0; j < SABER_N / 4; j++) {
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offset_byte = offset_byte1 + 5 * j;
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offset_data = 4 * j;
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bytes[offset_byte + 0] = (data[i][offset_data + 0] & (0xff));
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bytes[offset_byte + 1] = ((data[i][offset_data + 0] >> 8) & 0x03) |
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((data[i][offset_data + 1] & 0x3f) << 2);
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bytes[offset_byte + 2] = ((data[i][offset_data + 1] >> 6) & 0x0f) |
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((data[i][offset_data + 2] & 0x0f) << 4);
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bytes[offset_byte + 3] = ((data[i][offset_data + 2] >> 4) & 0x3f) |
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((data[i][offset_data + 3] & 0x03) << 6);
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bytes[offset_byte + 4] = ((data[i][offset_data + 3] >> 2) & 0xff);
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}
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}
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}
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static void BS2POLVECp(const unsigned char *bytes, uint16_t data[SABER_K][SABER_N]) {
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uint32_t i, j;
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uint32_t offset_data, offset_byte, offset_byte1;
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for (i = 0; i < SABER_K; i++) {
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offset_byte1 = i * (SABER_N * 10) / 8;
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for (j = 0; j < SABER_N / 4; j++) {
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offset_byte = offset_byte1 + 5 * j;
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offset_data = 4 * j;
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data[i][offset_data + 0] = (bytes[offset_byte + 0] & (0xff)) |
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((bytes[offset_byte + 1] & 0x03) << 8);
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data[i][offset_data + 1] = ((bytes[offset_byte + 1] >> 2) & (0x3f)) |
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((bytes[offset_byte + 2] & 0x0f) << 6);
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data[i][offset_data + 2] = ((bytes[offset_byte + 2] >> 4) & (0x0f)) |
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((bytes[offset_byte + 3] & 0x3f) << 4);
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data[i][offset_data + 3] = ((bytes[offset_byte + 3] >> 6) & (0x03)) |
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((bytes[offset_byte + 4] & 0xff) << 2);
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}
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}
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}
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static void POLVECq2BS(uint8_t *bytes, uint16_t data[SABER_K][SABER_N]) {
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uint32_t i, j;
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uint32_t offset_data, offset_byte, offset_byte1;
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for (i = 0; i < SABER_K; i++) {
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offset_byte1 = i * (SABER_N * 13) / 8;
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for (j = 0; j < SABER_N / 8; j++) {
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offset_byte = offset_byte1 + 13 * j;
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offset_data = 8 * j;
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bytes[offset_byte + 0] = (data[i][offset_data + 0] & (0xff));
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bytes[offset_byte + 1] = ((data[i][offset_data + 0] >> 8) & 0x1f) |
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((data[i][offset_data + 1] & 0x07) << 5);
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bytes[offset_byte + 2] = ((data[i][offset_data + 1] >> 3) & 0xff);
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bytes[offset_byte + 3] = ((data[i][offset_data + 1] >> 11) & 0x03) |
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((data[i][offset_data + 2] & 0x3f) << 2);
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bytes[offset_byte + 4] = ((data[i][offset_data + 2] >> 6) & 0x7f) |
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((data[i][offset_data + 3] & 0x01) << 7);
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bytes[offset_byte + 5] = ((data[i][offset_data + 3] >> 1) & 0xff);
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bytes[offset_byte + 6] = ((data[i][offset_data + 3] >> 9) & 0x0f) |
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((data[i][offset_data + 4] & 0x0f) << 4);
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bytes[offset_byte + 7] = ((data[i][offset_data + 4] >> 4) & 0xff);
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bytes[offset_byte + 8] = ((data[i][offset_data + 4] >> 12) & 0x01) |
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((data[i][offset_data + 5] & 0x7f) << 1);
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bytes[offset_byte + 9] = ((data[i][offset_data + 5] >> 7) & 0x3f) |
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((data[i][offset_data + 6] & 0x03) << 6);
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bytes[offset_byte + 10] = ((data[i][offset_data + 6] >> 2) & 0xff);
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bytes[offset_byte + 11] = ((data[i][offset_data + 6] >> 10) & 0x07) |
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((data[i][offset_data + 7] & 0x1f) << 3);
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bytes[offset_byte + 12] = ((data[i][offset_data + 7] >> 5) & 0xff);
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}
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}
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}
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static void BS2POLVECq(const unsigned char *bytes, uint16_t data[SABER_K][SABER_N]) {
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uint32_t i, j;
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uint32_t offset_data, offset_byte, offset_byte1;
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for (i = 0; i < SABER_K; i++) {
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offset_byte1 = i * (SABER_N * 13) / 8;
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for (j = 0; j < SABER_N / 8; j++) {
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offset_byte = offset_byte1 + 13 * j;
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offset_data = 8 * j;
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data[i][offset_data + 0] = (bytes[offset_byte + 0] & (0xff)) |
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((bytes[offset_byte + 1] & 0x1f) << 8);
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data[i][offset_data + 1] = (bytes[offset_byte + 1] >> 5 & (0x07)) |
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((bytes[offset_byte + 2] & 0xff) << 3) |
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((bytes[offset_byte + 3] & 0x03) << 11);
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data[i][offset_data + 2] = (bytes[offset_byte + 3] >> 2 & (0x3f)) |
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((bytes[offset_byte + 4] & 0x7f) << 6);
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data[i][offset_data + 3] = (bytes[offset_byte + 4] >> 7 & (0x01)) |
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((bytes[offset_byte + 5] & 0xff) << 1) |
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((bytes[offset_byte + 6] & 0x0f) << 9);
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data[i][offset_data + 4] = (bytes[offset_byte + 6] >> 4 & (0x0f)) |
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((bytes[offset_byte + 7] & 0xff) << 4) |
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((bytes[offset_byte + 8] & 0x01) << 12);
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data[i][offset_data + 5] = (bytes[offset_byte + 8] >> 1 & (0x7f)) |
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((bytes[offset_byte + 9] & 0x3f) << 7);
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data[i][offset_data + 6] = (bytes[offset_byte + 9] >> 6 & (0x03)) |
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((bytes[offset_byte + 10] & 0xff) << 2) |
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((bytes[offset_byte + 11] & 0x07) << 10);
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data[i][offset_data + 7] = (bytes[offset_byte + 11] >> 3 & (0x1f)) |
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((bytes[offset_byte + 12] & 0xff) << 5);
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}
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}
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}
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//only BS2POLq no BS2POLp
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void PQCLEAN_FIRESABER_CLEAN_BS2POL(const unsigned char *bytes, uint16_t data[SABER_N]) {
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uint32_t j;
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uint32_t offset_data, offset_byte;
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for (j = 0; j < SABER_N / 8; j++) {
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offset_byte = 13 * j;
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offset_data = 8 * j;
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data[offset_data + 0] = (bytes[offset_byte + 0] & (0xff)) |
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((bytes[offset_byte + 1] & 0x1f) << 8);
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data[offset_data + 1] = (bytes[offset_byte + 1] >> 5 & (0x07)) |
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((bytes[offset_byte + 2] & 0xff) << 3) |
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((bytes[offset_byte + 3] & 0x03) << 11);
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data[offset_data + 2] = (bytes[offset_byte + 3] >> 2 & (0x3f)) |
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((bytes[offset_byte + 4] & 0x7f) << 6);
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data[offset_data + 3] = (bytes[offset_byte + 4] >> 7 & (0x01)) |
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((bytes[offset_byte + 5] & 0xff) << 1) |
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((bytes[offset_byte + 6] & 0x0f) << 9);
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data[offset_data + 4] = (bytes[offset_byte + 6] >> 4 & (0x0f)) |
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((bytes[offset_byte + 7] & 0xff) << 4) |
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((bytes[offset_byte + 8] & 0x01) << 12);
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data[offset_data + 5] = (bytes[offset_byte + 8] >> 1 & (0x7f)) |
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((bytes[offset_byte + 9] & 0x3f) << 7);
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data[offset_data + 6] = (bytes[offset_byte + 9] >> 6 & (0x03)) |
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((bytes[offset_byte + 10] & 0xff) << 2) |
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((bytes[offset_byte + 11] & 0x07) << 10);
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data[offset_data + 7] = (bytes[offset_byte + 11] >> 3 & (0x1f)) |
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((bytes[offset_byte + 12] & 0xff) << 5);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_POLVEC2BS(uint8_t *bytes, uint16_t data[SABER_K][SABER_N], uint16_t modulus) {
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if (modulus == 1024) {
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POLVECp2BS(bytes, data);
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} else if (modulus == 8192) {
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POLVECq2BS(bytes, data);
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}
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}
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void PQCLEAN_FIRESABER_CLEAN_BS2POLVEC(const unsigned char *bytes, uint16_t data[SABER_K][SABER_N], uint16_t modulus) {
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if (modulus == 1024) {
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BS2POLVECp(bytes, data);
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} else if (modulus == 8192) {
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BS2POLVECq(bytes, data);
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}
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}
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