def process_receive_entry(sqlcur, key, value):
# blocks.cpp, deserialize_block(stream, type), rai::receive_block members
previous_block = value[:32]
source_block = value[32:64]
signature = value[64:128]
work = unpack('<Q', value[128:136])[0]
successor = value[136:168]
assert len(value[168:]) == 0
"""
print('Receive block %s' % bin2hex(key))
print('... previous block %s' % bin2hex(previous_block))
print('... source block %s' % bin2hex(source_block))
print('... signature %s' % bin2hex(signature))
print('... work %08x' % work)
print('... successor %s' % bin2hex(successor))
"""
block_id = get_block_id(key) # XXX _id
hash = bin2hex(key)
previous_id = get_block_id(previous_block)
source_id = get_block_id(source_block)
signature = bin2hex(signature)
work = '%08x' % work
successor_id = get_block_id(successor)
sqlcur.execute(
'insert into blocks (id, hash, type, previous, source, next) values (?,?,?,?,?,?)',
(block_id, hash, 'receive', previous_id, source_id, successor_id))
sqlcur.execute(
'insert into block_validation (id, signature, work) values (?,?,?)',
(block_id, signature, work))
def process_send_entry(sqlcur, key, value):
# blocks.cpp, deserialize_block(stream, type), rai::send_block members
previous_block = value[:32]
destination = value[32:64]
balance = value[64:80]
signature = value[80:144]
work = unpack('<Q', value[144:152])[0]
successor = value[152:184]
assert len(value[184:]) == 0
"""
print('Send block %s' % bin2hex(key))
print('... previous block %s' % bin2hex(previous_block))
print('... destination %s (%s)' % (destination, encode_account(destination)))
print('... balance %s (%.6f Mxrb)' % (bin2hex(balance), bin2balance_mxrb(balance)))
print('... signature %s' % bin2hex(signature))
print('... work %08x' % work)
print('... successor %s' % bin2hex(successor))
"""
block_id = get_block_id(key)
balance_mxrb = bin2balance_mxrb(balance)
balance_raw = bin2balance_raw(balance)
hash = bin2hex(key)
previous_id = get_block_id(previous_block)
destination_id = get_account_id(encode_account(destination))
signature = bin2hex(signature)
work = '%08x' % work
successor_id = get_block_id(successor)
# Note that we store balance_raw (a Python long) as a string
sqlcur.execute(
'insert into blocks (id, hash, type, previous, destination, balance, balance_raw, next) values (?,?,?,?,?,?,?,?)',
(block_id, hash, 'send', previous_id, destination_id, balance_mxrb,
str(balance_raw), successor_id))
sqlcur.execute(
'insert into block_validation (id, signature, work) values (?,?,?)',
(block_id, signature, work))
def get_block_id(blockhash):
# XXX this takes a bytes object, while get_account_id takes a string :-/
if bin2hex(
blockhash
) == '0000000000000000000000000000000000000000000000000000000000000000':
# Used in the LMDB database to indicate a null block "pointer"
return None
if bin2hex(blockhash) == GENESIS_PUBLIC_KEY:
# Source block of the genesis open block does not exist
return None
global next_block_id
try:
return block_ids[blockhash]
except KeyError:
block_ids[blockhash] = next_block_id
next_block_id += 1
return next_block_id - 1
def process_change_entry(sqlcur, key, value):
# blocks.cpp, deserialize_block(stream, type), rai::change_block members
previous_block = value[:32]
representative = value[32:64]
signature = value[64:128]
work = unpack('<Q', value[128:136])[0]
successor = value[136:168]
assert len(value[168:]) == 0
"""
print('Change block %s' % bin2hex(key))
print('... previous block %s' % bin2hex(previous_block))
print('... representative %s (%s)' % (bin2hex(representative), encode_account(representative)))
print('... signature %s' % bin2hex(signature))
print('... work %08x' % work)
print('... successor %s' % bin2hex(successor))
"""
block_id = get_block_id(key)
hash = bin2hex(key)
previous_id = get_block_id(previous_block)
representative_id = get_account_id(encode_account(representative))
signature = bin2hex(signature)
work = '%08x' % work
successor_id = get_block_id(successor)
sqlcur.execute(
'insert into blocks (id, hash, type, previous, representative, next) values (?,?,?,?,?,?)',
(block_id, hash, 'change', previous_id, representative_id,
successor_id))
sqlcur.execute(
'insert into block_validation (id, signature, work) values (?,?,?)',
(block_id, signature, work))
def process_open_entry(sqlcur, key, value):
# blocks.cpp, deserialize_block(stream, type), rai::open_block members
"""
Special case: open block of the genesis account (991CF190094C00F0B68E2E5F75F6BEE95A2E0BD93CEAA4A6734DB9F19B728948):
{
"type": "open",
"source": "E89208DD038FBB269987689621D52292AE9C35941A7484756ECCED92A65093BA",
"representative": "xrb_3t6k35gi95xu6tergt6p69ck76ogmitsa8mnijtpxm9fkcm736xtoncuohr3",
"account": "xrb_3t6k35gi95xu6tergt6p69ck76ogmitsa8mnijtpxm9fkcm736xtoncuohr3",
"work": "62f05417dd3fb691",
"signature": "9F0C933C8ADE004D808EA1985FA746A7E95BA2A38F867640F53EC8F180BDFE9E2C1268DEAD7C2664F356E37ABA362BC58E46DBA03E523A7B5A19E4B6EB12BB02"
}
See rai/secure.cpp for this block.
The source block does not exist!
Receive 340,282,366.920938 XRB
Where does the genesis balance come from?
Holy crap, from ledger_constants::genesis_amount() in rai/secure.cpp:
genesis_amount (std::numeric_limits<rai::uint128_t>::max ())
So, the initial amount available is 2**128-1 = 340282366920938463463374607431768211455 raw
But why the non-existent source block? Ah, the source "block" is actually the
public key of the Genesis account.
char const * live_public_key_data = "E89208DD038FBB269987689621D52292AE9C35941A7484756ECCED92A65093BA"; // xrb_3t6k35gi95xu6tergt6p69ck76ogmitsa8mnijtpxm9fkcm736xtoncuohr3
"""
source_block = value[:32]
representative = value[32:64]
account = value[64:96]
signature = value[96:160]
work = unpack('<Q', value[160:168])[0]
successor = value[168:200]
assert len(value[200:]) == 0
"""
print('Open block %s' % bin2hex(key))
print('... source block %s' % bin2hex(source_block))
print('... representative %s (%s)' % (bin2hex(representative), encode_account(representative)))
print('... account %s (%s)' % (bin2hex(account), encode_account(account)))
print('... signature %s' % bin2hex(signature))
print('... work %08x' % work)
print('... successor %s' % bin2hex(successor))
"""
block_id = get_block_id(key)
hash = bin2hex(key)
source_id = get_block_id(source_block)
representative_id = get_account_id(encode_account(representative))
account_id = get_account_id(encode_account(account))
signature = bin2hex(signature)
work = '%08x' % work
successor_id = get_block_id(successor)
sqlcur.execute(
'insert into blocks (id, hash, type, source, representative, account, next) values (?,?,?,?,?,?,?)',
(block_id, hash, 'open', source_id, representative_id, account_id,
successor_id))
sqlcur.execute(
'insert into block_validation (id, signature, work) values (?,?,?)',
(block_id, signature, work))
aes = AES.new(derived_key, AES.MODE_CTR, counter=counter)
wallet_key = aes.decrypt(encrypted_wallet_key)
#print(bin2hex(wallet_key))
# Password check:
# - Encrypt zeros with the (decrypted) wallet key
# - Check against stored value
# - Also uses only the first half of the salt
counter = Counter.new(128, initial_value=initial_counter_value)
aes = AES.new(wallet_key, AES.MODE_CTR, counter=counter)
result = aes.encrypt('\x00' * 32)
result = bin2hex(result).upper()
check = wallet[KEY_CHECK_VALUE]
if result != check:
print(result)
print(check)
print('PASSWORD IS INCORRECT')
sys.exit(-1)
# Get encrypted seed for deterministic key generation
# (i.e. THE wallet seed as entered in the Nano wallet) and decrypt it.
# Note: uses only the first half of the salt for the CTR mode
counter = Counter.new(128, initial_value=initial_counter_value)
aes = AES.new(wallet_key, AES.MODE_CTR, counter=counter)