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Merge pull request #3698 from SparkiDev/sp_math_no_asm_fix

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SP math: fix one word Montgomery Reduction for non-asm
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toddouska
2021-02-09 16:04:38 -08:00
committed by GitHub
parent 32424f715c 0ccb0d5fce
commit 47b2e8342b
2 changed files with 3 additions and 1 deletions
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2
wolfcrypt/src/sp_int.c
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@ -12110,7 +12110,7 @@ static int _sp_mont_red(sp_int* a, sp_int* m, sp_int_digit mp)
a->dp[1] = (sp_int_digit)w; a->dp[1] = (sp_int_digit)w;
w >>= SP_WORD_SIZE; w >>= SP_WORD_SIZE;
a->dp[2] = (sp_int_digit)w; a->dp[2] = (sp_int_digit)w;
a->used = 2; a->used = 3;
/* mp is SP_WORD_SIZE */ /* mp is SP_WORD_SIZE */
bits = SP_WORD_SIZE; bits = SP_WORD_SIZE;
} }

2
wolfssl/wolfcrypt/sp_int.h
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@ -167,6 +167,8 @@ extern "C" {
#define SP_WORD_SIZE 16 #define SP_WORD_SIZE 16
#undef WOLFSSL_SP_ASM #undef WOLFSSL_SP_ASM
#endif #endif
#elif defined(WOLFSSL_SP_X86)
#define SP_WORD_SIZE 32
#elif defined(WOLFSSL_SP_ARM64_ASM) || defined(WOLFSSL_SP_ARM64) #elif defined(WOLFSSL_SP_ARM64_ASM) || defined(WOLFSSL_SP_ARM64)
#define SP_WORD_SIZE 64 #define SP_WORD_SIZE 64
#elif defined(WOLFSSL_SP_ARM32_ASM) || defined(WOLFSSL_SP_ARM32) #elif defined(WOLFSSL_SP_ARM32_ASM) || defined(WOLFSSL_SP_ARM32)