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annotate nss/lib/freebl/mpi/mp_gf2m-priv.h @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifndef _MP_GF2M_PRIV_H_
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6 #define _MP_GF2M_PRIV_H_
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7
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8 #include "mpi-priv.h"
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9
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10 extern const mp_digit mp_gf2m_sqr_tb[16];
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11
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12 #if defined(MP_USE_UINT_DIGIT)
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13 #define MP_DIGIT_BITS 32
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14 /* enable fast divide and mod operations on MP_DIGIT_BITS */
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15 #define MP_DIGIT_BITS_LOG_2 5
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16 #define MP_DIGIT_BITS_MASK 0x1f
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17 #else
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18 #define MP_DIGIT_BITS 64
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19 /* enable fast divide and mod operations on MP_DIGIT_BITS */
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20 #define MP_DIGIT_BITS_LOG_2 6
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21 #define MP_DIGIT_BITS_MASK 0x3f
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22 #endif
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23
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24 /* Platform-specific macros for fast binary polynomial squaring. */
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25 #if MP_DIGIT_BITS == 32
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26 #define gf2m_SQR1(w) \
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27 mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 16 | \
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28 mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF]
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29 #define gf2m_SQR0(w) \
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30 mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \
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31 mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) & 0xF]
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32 #else
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33 #define gf2m_SQR1(w) \
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34 mp_gf2m_sqr_tb[(w) >> 60 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 56 & 0xF] << 48 | \
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35 mp_gf2m_sqr_tb[(w) >> 52 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 48 & 0xF] << 32 | \
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36 mp_gf2m_sqr_tb[(w) >> 44 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 40 & 0xF] << 16 | \
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37 mp_gf2m_sqr_tb[(w) >> 36 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 32 & 0xF]
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38 #define gf2m_SQR0(w) \
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39 mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 48 | \
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40 mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF] << 32 | \
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41 mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \
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42 mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) & 0xF]
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43 #endif
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44
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45 /* Multiply two binary polynomials mp_digits a, b.
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46 * Result is a polynomial with degree < 2 * MP_DIGIT_BITS - 1.
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47 * Output in two mp_digits rh, rl.
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48 */
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49 void s_bmul_1x1(mp_digit *rh, mp_digit *rl, const mp_digit a, const mp_digit b);
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50
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51 /* Compute xor-multiply of two binary polynomials (a1, a0) x (b1, b0)
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52 * result is a binary polynomial in 4 mp_digits r[4].
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53 * The caller MUST ensure that r has the right amount of space allocated.
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54 */
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55 void s_bmul_2x2(mp_digit *r, const mp_digit a1, const mp_digit a0, const mp_digit b1,
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56 const mp_digit b0);
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57
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58 /* Compute xor-multiply of two binary polynomials (a2, a1, a0) x (b2, b1, b0)
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59 * result is a binary polynomial in 6 mp_digits r[6].
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60 * The caller MUST ensure that r has the right amount of space allocated.
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61 */
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62 void s_bmul_3x3(mp_digit *r, const mp_digit a2, const mp_digit a1, const mp_digit a0,
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63 const mp_digit b2, const mp_digit b1, const mp_digit b0);
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64
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65 /* Compute xor-multiply of two binary polynomials (a3, a2, a1, a0) x (b3, b2, b1, b0)
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66 * result is a binary polynomial in 8 mp_digits r[8].
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67 * The caller MUST ensure that r has the right amount of space allocated.
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68 */
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69 void s_bmul_4x4(mp_digit *r, const mp_digit a3, const mp_digit a2, const mp_digit a1,
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70 const mp_digit a0, const mp_digit b3, const mp_digit b2, const mp_digit b1,
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71 const mp_digit b0);
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72
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73 #endif /* _MP_GF2M_PRIV_H_ */
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