diff options
Diffstat (limited to 'libtommath/bn_mp_read_radix.c')
| -rw-r--r-- | libtommath/bn_mp_read_radix.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libtommath/bn_mp_read_radix.c b/libtommath/bn_mp_read_radix.c index 1e272fb..4b92589 100644 --- a/libtommath/bn_mp_read_radix.c +++ b/libtommath/bn_mp_read_radix.c @@ -12,7 +12,7 @@ * The library is free for all purposes without any express * guarantee it works. * - * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org + * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com */ /* read a string [ASCII] in a given radix */ @@ -21,6 +21,9 @@ int mp_read_radix (mp_int * a, const char *str, int radix) int y, res, neg; char ch; + /* zero the digit bignum */ + mp_zero(a); + /* make sure the radix is ok */ if (radix < 2 || radix > 64) { return MP_VAL; @@ -45,7 +48,7 @@ int mp_read_radix (mp_int * a, const char *str, int radix) * this allows numbers like 1AB and 1ab to represent the same value * [e.g. in hex] */ - ch = (char) ((radix < 36) ? toupper (*str) : *str); + ch = (char) ((radix < 36) ? toupper ((unsigned char) *str) : *str); for (y = 0; y < 64; y++) { if (ch == mp_s_rmap[y]) { break; |