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Diffstat (limited to '')
-rw-r--r-- | security/nss/lib/freebl/mpi/mp_gf2m-priv.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/mp_gf2m-priv.h b/security/nss/lib/freebl/mpi/mp_gf2m-priv.h new file mode 100644 index 0000000000..5be4da4bf2 --- /dev/null +++ b/security/nss/lib/freebl/mpi/mp_gf2m-priv.h @@ -0,0 +1,73 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef _MP_GF2M_PRIV_H_ +#define _MP_GF2M_PRIV_H_ + +#include "mpi-priv.h" + +extern const mp_digit mp_gf2m_sqr_tb[16]; + +#if defined(MP_USE_UINT_DIGIT) +#define MP_DIGIT_BITS 32 +/* enable fast divide and mod operations on MP_DIGIT_BITS */ +#define MP_DIGIT_BITS_LOG_2 5 +#define MP_DIGIT_BITS_MASK 0x1f +#else +#define MP_DIGIT_BITS 64 +/* enable fast divide and mod operations on MP_DIGIT_BITS */ +#define MP_DIGIT_BITS_LOG_2 6 +#define MP_DIGIT_BITS_MASK 0x3f +#endif + +/* Platform-specific macros for fast binary polynomial squaring. */ +#if MP_DIGIT_BITS == 32 +#define gf2m_SQR1(w) \ + mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 16 | \ + mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF] +#define gf2m_SQR0(w) \ + mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \ + mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w)&0xF] +#else +#define gf2m_SQR1(w) \ + mp_gf2m_sqr_tb[(w) >> 60 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 56 & 0xF] << 48 | \ + mp_gf2m_sqr_tb[(w) >> 52 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 48 & 0xF] << 32 | \ + mp_gf2m_sqr_tb[(w) >> 44 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 40 & 0xF] << 16 | \ + mp_gf2m_sqr_tb[(w) >> 36 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 32 & 0xF] +#define gf2m_SQR0(w) \ + mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 48 | \ + mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF] << 32 | \ + mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \ + mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w)&0xF] +#endif + +/* Multiply two binary polynomials mp_digits a, b. + * Result is a polynomial with degree < 2 * MP_DIGIT_BITS - 1. + * Output in two mp_digits rh, rl. + */ +void s_bmul_1x1(mp_digit *rh, mp_digit *rl, const mp_digit a, const mp_digit b); + +/* Compute xor-multiply of two binary polynomials (a1, a0) x (b1, b0) + * result is a binary polynomial in 4 mp_digits r[4]. + * The caller MUST ensure that r has the right amount of space allocated. + */ +void s_bmul_2x2(mp_digit *r, const mp_digit a1, const mp_digit a0, const mp_digit b1, + const mp_digit b0); + +/* Compute xor-multiply of two binary polynomials (a2, a1, a0) x (b2, b1, b0) + * result is a binary polynomial in 6 mp_digits r[6]. + * The caller MUST ensure that r has the right amount of space allocated. + */ +void s_bmul_3x3(mp_digit *r, const mp_digit a2, const mp_digit a1, const mp_digit a0, + const mp_digit b2, const mp_digit b1, const mp_digit b0); + +/* Compute xor-multiply of two binary polynomials (a3, a2, a1, a0) x (b3, b2, b1, b0) + * result is a binary polynomial in 8 mp_digits r[8]. + * The caller MUST ensure that r has the right amount of space allocated. + */ +void s_bmul_4x4(mp_digit *r, const mp_digit a3, const mp_digit a2, const mp_digit a1, + const mp_digit a0, const mp_digit b3, const mp_digit b2, const mp_digit b1, + const mp_digit b0); + +#endif /* _MP_GF2M_PRIV_H_ */ |