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modtrezorcrypto: add HDNode.address

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TODO: tests
This commit is contained in:
Jan Pochyla 2016-10-20 15:03:50 +02:00
parent 46d06321dd
commit 4e47ae1606
1 changed files with 27 additions and 6 deletions
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33
extmod/modtrezorcrypto/modtrezorcrypto-bip32.h
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@ -15,6 +15,9 @@ typedef struct _mp_obj_HDNode_t {
HDNode hdnode;
} mp_obj_HDNode_t;
#define XPUB_MAXLEN 128
#define ADDRESS_MAXLEN 36
/// def trezor.crypto.HDNode.derive(index: int) -> None:
/// '''
/// Derive a BIP0032 child node in place.
@ -74,7 +77,7 @@ STATIC mp_obj_t serialize_public_private(mp_obj_t self, bool use_public) {
mp_obj_HDNode_t *o = MP_OBJ_TO_PTR(self);
vstr_t vstr;
vstr_init(&vstr, 120); // maximum length of base58-serialized node
vstr_init(&vstr, XPUB_MAXLEN);
int written;
if (use_public) {
@ -149,6 +152,16 @@ STATIC mp_obj_t mod_TrezorCrypto_HDNode_chain_code(mp_obj_t self) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_HDNode_chain_code_obj, mod_TrezorCrypto_HDNode_chain_code);
/// def trezor.crypto.HDNode.private_key() -> bytes:
/// '''
/// Returns a private key of the HD node.
/// '''
STATIC mp_obj_t mod_TrezorCrypto_HDNode_private_key(mp_obj_t self) {
mp_obj_HDNode_t *o = MP_OBJ_TO_PTR(self);
return mp_obj_new_str_of_type(&mp_type_bytes, o->hdnode.private_key, sizeof(o->hdnode.private_key));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_HDNode_private_key_obj, mod_TrezorCrypto_HDNode_private_key);
/// def trezor.crypto.HDNode.public_key() -> bytes:
/// '''
/// Returns a public key of the HD node.
@ -160,15 +173,22 @@ STATIC mp_obj_t mod_TrezorCrypto_HDNode_public_key(mp_obj_t self) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_HDNode_public_key_obj, mod_TrezorCrypto_HDNode_public_key);
/// def trezor.crypto.HDNode.private_key() -> bytes:
/// def trezor.crypto.HDNode.address(version: int) -> str:
/// '''
/// Returns a private key of the HD node.
/// Compute a base58-encoded address string from the HD node.
/// '''
STATIC mp_obj_t mod_TrezorCrypto_HDNode_private_key(mp_obj_t self) {
STATIC mp_obj_t mod_TrezorCrypto_HDNode_address(mp_obj_t self, mp_obj_t version) {
mp_obj_HDNode_t *o = MP_OBJ_TO_PTR(self);
return mp_obj_new_str_of_type(&mp_type_bytes, o->hdnode.private_key, sizeof(o->hdnode.private_key));
uint32_t v = mp_obj_get_int_truncated(version);
vstr_t vstr;
vstr_init(&vstr, ADDRESS_MAXLEN);
hdnode_get_address(&o->hdnode, v, vstr.buf, vstr.alloc);
vstr.len = strlen(vstr.buf);
return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_HDNode_private_key_obj, mod_TrezorCrypto_HDNode_private_key);
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_HDNode_address_obj, mod_TrezorCrypto_HDNode_address);
STATIC const mp_rom_map_elem_t mod_TrezorCrypto_HDNode_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_derive), MP_ROM_PTR(&mod_TrezorCrypto_HDNode_derive_obj) },
@ -182,6 +202,7 @@ STATIC const mp_rom_map_elem_t mod_TrezorCrypto_HDNode_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_chain_code), MP_ROM_PTR(&mod_TrezorCrypto_HDNode_chain_code_obj) },
{ MP_ROM_QSTR(MP_QSTR_private_key), MP_ROM_PTR(&mod_TrezorCrypto_HDNode_private_key_obj) },
{ MP_ROM_QSTR(MP_QSTR_public_key), MP_ROM_PTR(&mod_TrezorCrypto_HDNode_public_key_obj) },
{ MP_ROM_QSTR(MP_QSTR_address), MP_ROM_PTR(&mod_TrezorCrypto_HDNode_address_obj) },
};
STATIC MP_DEFINE_CONST_DICT(mod_TrezorCrypto_HDNode_locals_dict, mod_TrezorCrypto_HDNode_locals_dict_table);