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nem: modtrezorcrypto overflow fix and err check

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This commit is contained in:
Tomas Susanka 2018-03-27 10:50:58 +02:00 committed by Jan Pochyla
parent 0e1b3aa904
commit 3fc96805dd
1 changed files with 7 additions and 3 deletions
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10
embed/extmod/modtrezorcrypto/modtrezorcrypto-bip32.h
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@ -323,8 +323,10 @@ STATIC mp_obj_t mod_trezorcrypto_HDNode_nem_address(mp_obj_t self, mp_obj_t netw
mp_obj_HDNode_t *o = MP_OBJ_TO_PTR(self);
uint8_t n = mp_obj_get_int_truncated(network);
char address[NEM_ADDRESS_SIZE];
hdnode_get_nem_address(&o->hdnode, n, address);
char address[NEM_ADDRESS_SIZE + 1];
if (!hdnode_get_nem_address(&o->hdnode, n, address)) {
mp_raise_ValueError("Failed to compute a NEM address");
}
return mp_obj_new_str(address, strlen(address), false);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorcrypto_HDNode_nem_address_obj, mod_trezorcrypto_HDNode_nem_address);
@ -360,7 +362,9 @@ STATIC mp_obj_t mod_trezorcrypto_HDNode_nem_encrypt(size_t n_args, const mp_obj_
uint8_t buffer[NEM_ENCRYPTED_SIZE(payload.len)];
hdnode_nem_encrypt(&o->hdnode, *(const ed25519_public_key *)transfer_pk.buf, iv.buf, salt.buf, payload.buf, payload.len, buffer);
if (!hdnode_nem_encrypt(&o->hdnode, *(const ed25519_public_key *)transfer_pk.buf, iv.buf, salt.buf, payload.buf, payload.len, buffer)) {
mp_raise_ValueError("HDNode nem encrypt failed");
}
return mp_obj_new_bytes(buffer, sizeof(buffer));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorcrypto_HDNode_nem_encrypt_obj, 5, 5, mod_trezorcrypto_HDNode_nem_encrypt);