diff options
Diffstat (limited to 'FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i')
| -rw-r--r-- | FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i b/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i index 905028d17..97dc076be 100644 --- a/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i +++ b/FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/fp_mul_comba_32.i @@ -1,8 +1,8 @@ /* fp_mul_comba_32.i * - * Copyright (C) 2006-2015 wolfSSL Inc. + * Copyright (C) 2006-2020 wolfSSL Inc. * - * This file is part of wolfSSL. (formerly known as CyaSSL) + * This file is part of wolfSSL. * * wolfSSL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -16,19 +16,31 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA */ + #ifdef TFM_MUL32 -void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) +int fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) { - fp_digit c0, c1, c2, at[64]; int out_size; + fp_digit c0, c1, c2; +#ifndef WOLFSSL_SMALL_STACK + fp_digit at[64]; +#else + fp_digit *at; +#endif + +#ifdef WOLFSSL_SMALL_STACK + at = (fp_digit*)XMALLOC(sizeof(fp_digit) * 64, NULL, DYNAMIC_TYPE_TMP_BUFFER); + if (at == NULL) + return FP_MEM; +#endif out_size = A->used + B->used; - memcpy(at, A->dp, 32 * sizeof(fp_digit)); - memcpy(at+32, B->dp, 32 * sizeof(fp_digit)); + XMEMCPY(at, A->dp, 32 * sizeof(fp_digit)); + XMEMCPY(at+32, B->dp, 32 * sizeof(fp_digit)); COMBA_START; COMBA_CLEAR; @@ -189,7 +201,7 @@ void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) COMBA_STORE(C->dp[38]); /* early out at 40 digits, 40*32==1280, or two 640 bit operands */ - if (out_size <= 40) { COMBA_STORE2(C->dp[39]); C->used = 40; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return; } + if (out_size <= 40) { COMBA_STORE2(C->dp[39]); C->used = 40; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return FP_OKAY; } /* 39 */ COMBA_FORWARD; @@ -225,7 +237,7 @@ void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) COMBA_STORE(C->dp[46]); /* early out at 48 digits, 48*32==1536, or two 768 bit operands */ - if (out_size <= 48) { COMBA_STORE2(C->dp[47]); C->used = 48; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return; } + if (out_size <= 48) { COMBA_STORE2(C->dp[47]); C->used = 48; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return FP_OKAY; } /* 47 */ COMBA_FORWARD; @@ -261,7 +273,7 @@ void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) COMBA_STORE(C->dp[54]); /* early out at 56 digits, 56*32==1792, or two 896 bit operands */ - if (out_size <= 56) { COMBA_STORE2(C->dp[55]); C->used = 56; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return; } + if (out_size <= 56) { COMBA_STORE2(C->dp[55]); C->used = 56; C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; return FP_OKAY; } /* 55 */ COMBA_FORWARD; @@ -300,5 +312,10 @@ void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C) C->sign = A->sign ^ B->sign; fp_clamp(C); COMBA_FINI; + +#ifdef WOLFSSL_SMALL_STACK + XFREE(at, NULL, DYNAMIC_TYPE_TMP_BUFFER); +#endif + return FP_OKAY; } #endif |