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modtrezorcrypto/bip39: throw less exceptions

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This commit is contained in:
Jan Pochyla 2018-01-11 20:07:04 +01:00
parent 58c3bba9e2
commit 20c4900df1
1 changed files with 2 additions and 2 deletions
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4
embed/extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
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@ -18,7 +18,7 @@ STATIC mp_obj_t mod_trezorcrypto_bip39_find_word(mp_obj_t prefix)
mp_buffer_info_t pfx; mp_buffer_info_t pfx;
mp_get_buffer_raise(prefix, &pfx, MP_BUFFER_READ); mp_get_buffer_raise(prefix, &pfx, MP_BUFFER_READ);
if (pfx.len == 0) { if (pfx.len == 0) {
mp_raise_ValueError("Invalid word prefix"); return mp_const_none;
} }
for (const char * const *w = mnemonic_wordlist(); *w != 0; w++) { for (const char * const *w = mnemonic_wordlist(); *w != 0; w++) {
if (strncmp(*w, pfx.buf, pfx.len) == 0) { if (strncmp(*w, pfx.buf, pfx.len) == 0) {
@ -39,7 +39,7 @@ STATIC mp_obj_t mod_trezorcrypto_bip39_complete_word(mp_obj_t prefix)
mp_buffer_info_t pfx; mp_buffer_info_t pfx;
mp_get_buffer_raise(prefix, &pfx, MP_BUFFER_READ); mp_get_buffer_raise(prefix, &pfx, MP_BUFFER_READ);
if (pfx.len == 0) { if (pfx.len == 0) {
mp_raise_ValueError("Invalid word prefix"); return mp_obj_new_int(0xFFFFFFFF); // all letters
} }
uint32_t res = 0; uint32_t res = 0;
uint8_t bit; uint8_t bit;