amagi 0.1.2

Rust SDK, CLI, and Web API service skeleton for multi-platform social web adapters.
Documentation 
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pub(crate) fn rc4_encrypt(key: &[u8], data: &[u8]) -> Vec<u8> {
    if key.is_empty() {
        return data.to_vec();
    }

    let mut s = [0u8; 256];
    for (index, value) in s.iter_mut().enumerate() {
        *value = index as u8;
    }

    let mut j = 0usize;
    for i in 0..256 {
        j = (j + s[i] as usize + key[i % key.len()] as usize) % 256;
        s.swap(i, j);
    }

    let mut i = 0usize;
    j = 0usize;
    let mut output = Vec::with_capacity(data.len());

    for byte in data {
        i = (i + 1) % 256;
        j = (j + s[i] as usize) % 256;
        s.swap(i, j);
        let t = (s[i] as usize + s[j] as usize) % 256;
        output.push(byte ^ s[t]);
    }

    output
}