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Review comment in sp_int file

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This commit is contained in:
Tesfa Mael 2020-08-04 15:37:20 -07:00
parent d03971e233
commit 5d7649c959
1 changed files with 10 additions and 8 deletions
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18
wolfcrypt/src/sp_int.c
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@ -43,9 +43,9 @@ This library provides single precision (SP) integer math functions.
* WOLFSSL_HAVE_SP_RSA: Enable SP RSA support
* WOLFSSL_HAVE_SP_DH: Enable SP DH support
* WOLFSSL_HAVE_SP_ECC: Enable SP ECC support
* WOLFSSL_SP_MATH: Use only single precision math and algorithms
* WOLFSSL_SP_MATH: Use only single precision math and algorithms
* it supports (no fastmath tfm.c or normal integer.c)
* WOLFSSL_SP_SMALL: Use smaller version of code and avoid large
* WOLFSSL_SP_SMALL: Use smaller version of code and avoid large
* stack variables
* WOLFSSL_SP_NO_MALLOC: Always use stack, no heap XMALLOC/XFREE allowed
* WOLFSSL_SP_NO_2048: Disable RSA/DH 2048-bit support
@ -59,11 +59,11 @@ This library provides single precision (SP) integer math functions.
* WOLFSSL_SP_ARM32_ASM Enable Aarch32 assembly speedups
* WOLFSSL_SP_ARM64_ASM Enable Aarch64 assembly speedups
* WOLFSSL_SP_ARM_CORTEX_M_ASM Enable Cortex-M assembly speedups
* WOLFSSL_SP_ARM_THUMB_ASM Enable ARM Thumb assembly speedups
* WOLFSSL_SP_ARM_THUMB_ASM Enable ARM Thumb assembly speedups
* (used with -mthumb)
* SP_WORD_SIZE Force 32 or 64 bit mode
* WOLFSSL_SP_NONBLOCK Enables "non blocking" mode for SP math, which
* will return FP_WOULDBLOCK for long operations and function must be
* WOLFSSL_SP_NONBLOCK Enables "non blocking" mode for SP math, which
* will return FP_WOULDBLOCK for long operations and function must be
* called again until complete.
*/
@ -192,7 +192,7 @@ int sp_read_unsigned_bin(sp_int* a, const byte* in, word32 inSz)
int i, j = 0, k;
/* Extra digit added to SP_INT_DIGITS to be used in calculations. */
if (inSz > SP_INT_DIGITS * (int)sizeof(a->dp[0])) {
if (inSz > (SP_INT_DIGITS - 1) * (int)sizeof(a->dp[0])) {
err = MP_VAL;
}
else if (inSz == 0) {
@ -1063,8 +1063,10 @@ int sp_add_d(sp_int* a, sp_int_digit d, sp_int* r)
}
}
r->dp[0] = t;
for (++i; i < a->used; i++)
r->dp[i] = a->dp[i];
if (r != a) {
for (++i; i < a->used; i++)
r->dp[i] = a->dp[i];
}
return MP_OKAY;
}