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[hentainexus] improve 'rc4' performance

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- & 255
- "".join()
This commit is contained in:
Mike Fährmann
2026-01-22 17:36:44 +01:00
parent 16a59140c5
commit 396334e66e
1 changed files with 9 additions and 9 deletions
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18
gallery_dl/extractor/hentainexus.py
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@@ -99,23 +99,23 @@ class HentainexusGalleryExtractor(GalleryExtractor):
k = primes[C & 0x7] k = primes[C & 0x7]
x = 0 x = 0
L = len(key)
S = list(range(256)) S = list(range(256))
for i in range(256): for i in range(256):
x = (x + S[i] + key[i % len(key)]) % 256 x = (x + S[i] + key[i % L]) & 255
S[i], S[x] = S[x], S[i] S[i], S[x] = S[x], S[i]
result = "" result = []
a = c = m = x = 0 a = c = m = x = 0
for n in range(64, len(blob)): for n in range(64, len(blob)):
a = (a + k) % 256 a = (a + k) & 255
x = (c + S[(x + S[a]) % 256]) % 256 x = (c + S[(x + S[a]) & 255]) & 255
c = (c + a + S[a]) % 256 c = (c + a + S[a]) & 255
S[a], S[x] = S[x], S[a] S[a], S[x] = S[x], S[a]
m = S[(x + S[(a + S[(m + c) % 256]) % 256]) % 256] m = S[(x + S[(a + S[(m + c) & 255]) & 255]) & 255]
result += chr(blob[n] ^ m) result.append(chr(blob[n] ^ m))
return "".join(result)
return result
def _join_title(self, data): def _join_title(self, data):
event = data['event'] event = data['event']