Struct XofAlgorithmBuilder

pub struct XofAlgorithmBuilder;

Builder for constructing XOF algorithm instances.

用于构建 XOF 算法实例的构建器。

Usage Pattern | 使用模式

use seal_crypto_wrapper::algorithms::xof::XofAlgorithm;

// For general-purpose applications
let shake128 = XofAlgorithm::build().shake128();

// For high-security applications
let shake256 = XofAlgorithm::build().shake256();

Performance Considerations | 性能考虑

SHAKE-128 is faster due to its higher rate (more data processed per round), while SHAKE-256 provides higher security at the cost of some performance.

SHAKE-128 由于其更高的速率（每轮处理更多数据）而更快， 而 SHAKE-256 以一些性能为代价提供更高的安全性。

Implementations

impl XofAlgorithmBuilder

pub fn shake128(self) -> XofAlgorithm

Selects SHAKE-128 extendable output function.

选择 SHAKE-128 可扩展输出函数。

Properties | 属性

• Security level: 128-bit
• Rate: 1344 bits (168 bytes per round)
• Capacity: 256 bits
• Performance: High

Use Cases | 使用场景

• General-purpose key derivation

• Random number generation

• Stream cipher keystreams

• Mask generation functions

• 通用密钥派生

• 随机数生成

• 流密码密钥流

• 掩码生成函数

Examples | 示例

use seal_crypto_wrapper::algorithms::xof::XofAlgorithm;
use seal_crypto_wrapper::prelude::XofAlgorithmTrait;

let xof = XofAlgorithm::build().shake128();
let wrapper = xof.into_wrapper();

// Generate variable-length output
let mut reader = wrapper.reader(b"input data", None, None)?;
let output = reader.read_boxed(32); // 32 bytes of output

pub fn shake256(self) -> XofAlgorithm

Selects SHAKE-256 extendable output function.

选择 SHAKE-256 可扩展输出函数。

Properties | 属性

• Security level: 256-bit
• Rate: 1088 bits (136 bytes per round)
• Capacity: 512 bits
• Performance: Medium

Use Cases | 使用场景

• High-security key derivation

• Long-term cryptographic applications

• Post-quantum security preparations

• High-value data protection

• 高安全性密钥派生

• 长期密码应用

• 后量子安全准备

• 高价值数据保护

Examples | 示例

use seal_crypto_wrapper::algorithms::xof::XofAlgorithm;
use seal_crypto_wrapper::prelude::XofAlgorithmTrait;

let xof = XofAlgorithm::build().shake256();
let wrapper = xof.into_wrapper();

// Generate large amounts of pseudorandom data
let mut reader = wrapper.reader(b"seed", Some(b"salt"), Some(b"info"))?;
let large_output = reader.read_boxed(1024); // 1KB of output