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Diffstat (limited to 'mozilla/security/nss/lib/freebl/mpi/montmulf.h')
-rw-r--r-- | mozilla/security/nss/lib/freebl/mpi/montmulf.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/mozilla/security/nss/lib/freebl/mpi/montmulf.h b/mozilla/security/nss/lib/freebl/mpi/montmulf.h new file mode 100644 index 0000000..4476d51 --- /dev/null +++ b/mozilla/security/nss/lib/freebl/mpi/montmulf.h @@ -0,0 +1,103 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is interface file for SPARC Montgomery multiply functions. + * + * The Initial Developer of the Original Code is + * Sun Microsystems Inc. + * Portions created by the Initial Developer are Copyright (C) 1999-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Netscape Communications Corporation + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ +/* $Id: montmulf.h,v 1.4 2004/04/27 23:04:36 gerv%gerv.net Exp $ */ + +/* 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. + */ |