yes BN remove leading 0, the last 0 from the second column is made by the
memset
JLD
----- Original Message -----
From: "Jake" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, March 07, 2002 5:19 PM
Subject: BN_bin2bn, is this normal?
>
> the following program outputs:
>
> -----------------------
> what the heck?
> 0 41
> 41 81
> 81 c1
> c1 1
> 1 42
> 42 82
> 82 c2
> c2 0
> -----------------------
>
> is this the expected behavior?
>
>
> #include <stdio.h>
> #include <string.h>
> #include <openssl/bn.h>
>
> static unsigned char data[8]={0x00,0x41,0x81,0xc1,0x01,0x42,0x82,0xc2};
>
> int main(int argc, char* argv[])
> {
> unsigned char aa[8];
> BIGNUM *a;
> int i;
>
> memset(aa, 0, 8);
> a = BN_new();
>
> BN_bin2bn(data, 8, a);
> BN_bn2bin(a, aa);
>
> if (memcmp(aa, data, 8) != 0)
> printf("what the heck?\n");
>
> for (i = 0; i < 8; i++)
> printf("%2x %2x\n", data[i], aa[i]);
> }
>
>
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