shenjack/namerena-rs
shenjack/namerena-rs
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Refactor RC4 implementation

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This commit is contained in:
shenjack-5600u 2024-05-02 12:29:52 +08:00
parent fe46122537
commit 6bc2637263
Signed by: shenjack
GPG Key ID: FDF9864E11C7E79F
1 changed files with 8 additions and 6 deletions
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10
namerena-runner/src/rc4.rs
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@ -88,7 +88,8 @@ impl RC4 {
self.i = (self.i + 1) & 255; self.i = (self.i + 1) & 255;
self.j = (self.j + self.main_val[self.i as usize] as u32) & 255; self.j = (self.j + self.main_val[self.i as usize] as u32) & 255;
self.main_val.swap(self.i as usize, self.j as usize); self.main_val.swap(self.i as usize, self.j as usize);
*byte ^= self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255]; *byte ^=
self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255];
} }
} }
@ -113,7 +114,8 @@ impl RC4 {
self.i = (self.i + 1) & 255; self.i = (self.i + 1) & 255;
self.j = (self.j + self.main_val[self.i as usize] as u32) & 255; self.j = (self.j + self.main_val[self.i as usize] as u32) & 255;
self.main_val.swap(self.i as usize, self.j as usize); self.main_val.swap(self.i as usize, self.j as usize);
*byte ^= self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255]; *byte ^=
self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255];
self.j = (self.j + *byte as u32) & 255; self.j = (self.j + *byte as u32) & 255;
} }
} }
@ -141,7 +143,8 @@ impl RC4 {
self.j = (self.j + self.main_val[self.i as usize] as u32) & 255; self.j = (self.j + self.main_val[self.i as usize] as u32) & 255;
self.main_val.swap(self.i as usize, self.j as usize); self.main_val.swap(self.i as usize, self.j as usize);
let byte_v = *byte; let byte_v = *byte;
*byte ^= self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255]; *byte ^=
self.main_val[(self.main_val[self.i as usize] as u32 + self.main_val[self.j as usize] as u32) as usize & 255];
self.j = (self.j + byte_v as u32) & 255; self.j = (self.j + byte_v as u32) & 255;
} }
} }
@ -179,7 +182,6 @@ impl RC4 {
/// } while (round !== 0) /// } while (round !== 0)
/// return n /// return n
/// } /// }
///
/// ``` /// ```
pub fn next_i32(&mut self, max: i32) -> i32 { pub fn next_i32(&mut self, max: i32) -> i32 {
if max == 0 { if max == 0 {