init

bcrypt/working/shifts.py

@@ -0,0 +1,23 @@
+from typing import Any
+
+def clamp_pos(x: int):
+    return x if x > 0 else 0
+
+def lpad(x: Any, n: int, pad: chr = ' '):
+    x = str(x)
+    return clamp_pos(n - len(x))*pad + x
+    
+def debug_R(B: int):
+    # B = int('1'*7, 2)
+    for j in range(8):
+        j_sq = j**2
+        R_j = B << j_sq
+        lpadbin_R_j = lpad(bin(R_j)[2:], 64, pad='0')
+        print(f'{lpad(j_sq, 2)}: {lpadbin_R_j} {R_j}')
+
+def main():
+    B = int(input('B: '), 2)
+    debug_R(B)
+
+if __name__ == '__main__':
+    main()