From ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- security/nss/lib/freebl/mpi/montmulf.h | 65 ++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 security/nss/lib/freebl/mpi/montmulf.h (limited to 'security/nss/lib/freebl/mpi/montmulf.h') diff --git a/security/nss/lib/freebl/mpi/montmulf.h b/security/nss/lib/freebl/mpi/montmulf.h new file mode 100644 index 0000000000..69bed4acb1 --- /dev/null +++ b/security/nss/lib/freebl/mpi/montmulf.h @@ -0,0 +1,65 @@ +/* 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/. */ + +/* The functions that are to be called from outside of the .s file have the + * following interfaces and array size requirements: + */ + +void conv_i32_to_d32(double *d32, unsigned int *i32, int len); + +/* Converts an array of int's to an array of doubles, so that each double + * corresponds to an int. len is the number of items converted. + * Does not allocate the output array. + * The pointers d32 and i32 should point to arrays of size at least len + * (doubles and unsigned ints, respectively) + */ + +void conv_i32_to_d16(double *d16, unsigned int *i32, int len); + +/* Converts an array of int's to an array of doubles so that each element + * of the int array is converted to a pair of doubles, the first one + * corresponding to the lower (least significant) 16 bits of the int and + * the second one corresponding to the upper (most significant) 16 bits of + * the 32-bit int. len is the number of ints converted. + * Does not allocate the output array. + * The pointer d16 should point to an array of doubles of size at least + * 2*len and i32 should point an array of ints of size at least len + */ + +void conv_i32_to_d32_and_d16(double *d32, double *d16, + unsigned int *i32, int len); + +/* Does the above two conversions together, it is much faster than doing + * both of those in succession + */ + +void mont_mulf_noconv(unsigned int *result, + double *dm1, double *dm2, double *dt, + double *dn, unsigned int *nint, + int nlen, double dn0); + +/* Does the Montgomery multiplication of the numbers stored in the arrays + * pointed to by dm1 and dm2, writing the result to the array pointed to by + * result. It uses the array pointed to by dt as a temporary work area. + * nint should point to the modulus in the array-of-integers representation, + * dn should point to its array-of-doubles as obtained as a result of the + * function call conv_i32_to_d32(dn, nint, nlen); + * nlen is the length of the array containing the modulus. + * The representation used for dm1 is the one that is a result of the function + * call conv_i32_to_d32(dm1, m1, nlen), the representation for dm2 is the + * result of the function call conv_i32_to_d16(dm2, m2, nlen). + * Note that m1 and m2 should both be of length nlen, so they should be + * padded with 0's if necessary before the conversion. The result comes in + * this form (int representation, padded with 0's). + * dn0 is the value of the 16 least significant bits of n0'. + * The function does not allocate memory for any of the arrays, so the + * pointers should point to arrays with the following minimal sizes: + * result - nlen+1 + * dm1 - nlen + * dm2 - 2*nlen+1 ( the +1 is necessary for technical reasons ) + * dt - 4*nlen+2 + * dn - nlen + * nint - nlen + * No two arrays should point to overlapping areas of memory. + */ -- cgit v1.2.3