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add mine_key with pow function

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jeffthibault
2023-01-21 14:57:42 -05:00
parent 9d523c8942
commit b8f2d79d2c
1 changed files with 14 additions and 3 deletions
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17
nostr/pow.py
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@@ -1,5 +1,6 @@
import time
from .event import Event
from .key import PrivateKey
def zero_bits(b: int) -> int:
n = 0
@@ -13,10 +14,10 @@ def zero_bits(b: int) -> int:
return 7 - n
def count_leading_zero_bits(event_id: str) -> int:
def count_leading_zero_bits(hex_str: str) -> int:
total = 0
for i in range(0, len(event_id) - 2, 2):
bits = zero_bits(int(event_id[i:i+2], 16))
for i in range(0, len(hex_str) - 2, 2):
bits = zero_bits(int(hex_str[i:i+2], 16))
total += bits
if bits != 8:
@@ -41,3 +42,13 @@ def mine_event(content: str, difficulty: int, public_key: str, kind: int, tags:
num_leading_zero_bits = count_leading_zero_bits(event_id)
return Event(public_key, content, created_at, kind, all_tags, event_id)
def mine_key(difficulty: int) -> PrivateKey:
sk = PrivateKey()
num_leading_zero_bits = count_leading_zero_bits(sk.public_key.hex())
while num_leading_zero_bits < difficulty:
sk = PrivateKey()
num_leading_zero_bits = count_leading_zero_bits(sk.public_key.hex())
return sk