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22 lines
591 B
Rust
22 lines
591 B
Rust
use crc32fast::Hasher;
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use siphasher::sip::SipHasher;
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pub fn sip_hash(key: &str, cardinality: usize, id: &[u8; 16]) -> usize {
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// 你的密钥，必须是 16 字节
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// 计算字符串的 SipHash 值
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let result = SipHasher::new_with_key(id).hash(key.as_bytes());
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result as usize % cardinality
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}
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pub fn crc_hash(key: &str, cardinality: usize) -> usize {
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let mut hasher = Hasher::new(); // 创建一个新的哈希器
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hasher.update(key.as_bytes()); // 更新哈希状态，添加数据
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let checksum = hasher.finalize();
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checksum as usize % cardinality
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}
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