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embed/extmod/modtrezorcrypto: use mnemonic_clear where needed

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Pavol Rusnak 2019-01-23 18:37:56 +01:00
parent 806805e296
commit 2de0eac7dc
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GPG Key ID: 91F3B339B9A02A3D
2 changed files with 7 additions and 3 deletions
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8
embed/extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
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@ -81,7 +81,9 @@ STATIC mp_obj_t mod_trezorcrypto_bip39_generate(mp_obj_t strength) {
mp_raise_ValueError("Invalid bit strength (only 128, 160, 192, 224 and 256 values are allowed)"); mp_raise_ValueError("Invalid bit strength (only 128, 160, 192, 224 and 256 values are allowed)");
} }
const char *mnemo = mnemonic_generate(bits); const char *mnemo = mnemonic_generate(bits);
return mp_obj_new_str_copy(&mp_type_str, (const uint8_t *)mnemo, strlen(mnemo)); mp_obj_t res = mp_obj_new_str_copy(&mp_type_str, (const uint8_t *)mnemo, strlen(mnemo));
mnemonic_clear();
return res;
} }
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_bip39_generate_obj, mod_trezorcrypto_bip39_generate); STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_bip39_generate_obj, mod_trezorcrypto_bip39_generate);
@ -96,7 +98,9 @@ STATIC mp_obj_t mod_trezorcrypto_bip39_from_data(mp_obj_t data) {
mp_raise_ValueError("Invalid data length (only 16, 20, 24, 28 and 32 bytes are allowed)"); mp_raise_ValueError("Invalid data length (only 16, 20, 24, 28 and 32 bytes are allowed)");
} }
const char *mnemo = mnemonic_from_data(bin.buf, bin.len); const char *mnemo = mnemonic_from_data(bin.buf, bin.len);
return mp_obj_new_str_copy(&mp_type_str, (const uint8_t *)mnemo, strlen(mnemo)); mp_obj_t res = mp_obj_new_str_copy(&mp_type_str, (const uint8_t *)mnemo, strlen(mnemo));
mnemonic_clear();
return res;
} }
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_bip39_from_data_obj, mod_trezorcrypto_bip39_from_data); STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_bip39_from_data_obj, mod_trezorcrypto_bip39_from_data);

2
vendor/trezor-crypto vendored

@ -1 +1 @@
Subproject commit c316e775a2152db255ace96b6b65ac0f20525ec0 Subproject commit d1c52401e4c76c74a10455682ace0655b7aa644c