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check buffer is larger enough before overwriting

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This commit is contained in:
Dr. Stephen Henson 2011-04-06 18:06:41 +00:00
parent 161cc82df1
commit acd410dc15
1 changed files with 2 additions and 3 deletions
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5
crypto/ecdsa/ecdsatest.c
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@ -168,10 +168,9 @@ int fbytes(unsigned char *buf, int num)
return 0; return 0;
} }
fbytes_counter ++; fbytes_counter ++;
ret = BN_bn2bin(tmp, buf); if (num != BN_num_bytes(tmp) || !BN_bn2bin(tmp, buf))
if (ret == 0 || ret != num)
ret = 0; ret = 0;
else else
ret = 1; ret = 1;
if (tmp) if (tmp)
BN_free(tmp); BN_free(tmp);