wolfSSL的Golang封装中的加密功能实现

wolfSSL的Golang封装中的加密功能实现 请查看这篇宣布 go-wolfssl（wolfSSL 的 Go 语言封装库）中加密功能的博客文章！

wolfssl.com

Crypto in go-wolfssl - wolfSSL

wolfSSL 的 Go 语言封装库 go-wolfssl，现已包含第一轮的 wolfCrypt API。最近新增的功能包括 ECC 签名/验证、SHA 哈希和 AES 加密。


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go-wolfssl为Golang开发者提供了wolfCrypt加密库的直接接口，实现了高性能的底层加密操作。以下是关键功能的代码示例：

1. ECC签名与验证

package main

import (
    "fmt"
    "github.com/wolfssl/go-wolfssl/wolfcrypt"
)

func main() {
    // 生成ECC密钥对
    key := wolfcrypt.EccKeyNew()
    defer wolfcrypt.EccKeyFree(key)
    
    rng := wolfcrypt.Wc_RngNew()
    defer wolfcrypt.Wc_RngFree(rng)
    
    // 使用SECP256R1曲线初始化密钥
    wolfcrypt.EccInitKey(key, 32, nil, nil)
    wolfcrypt.EccMakeKey(key, 32, rng)
    
    // 签名数据
    message := []byte("重要交易数据")
    sig := make([]byte, 64)
    sigLen := uint32(64)
    
    ret := wolfcrypt.EccSignHash(message, uint32(len(message)), 
        sig, &sigLen, key, rng)
    if ret == 0 {
        fmt.Printf("签名成功，长度：%d\n", sigLen)
    }
    
    // 验证签名
    verifyRet := wolfcrypt.EccVerifyHash(sig, sigLen, 
        message, uint32(len(message)), key)
    if verifyRet == 0 {
        fmt.Println("签名验证成功")
    }
}

2. SHA系列哈希计算

package main

import (
    "fmt"
    "github.com/wolfssl/go-wolfssl/wolfcrypt"
)

func main() {
    data := []byte("需要哈希的数据")
    
    // SHA-256
    sha256 := wolfcrypt.Sha256New()
    defer wolfcrypt.Sha256Free(sha256)
    
    wolfcrypt.Sha256Update(sha256, data, uint32(len(data)))
    hash256 := make([]byte, 32)
    wolfcrypt.Sha256Final(sha256, hash256)
    fmt.Printf("SHA-256: %x\n", hash256)
    
    // SHA-512
    sha512 := wolfcrypt.Sha512New()
    defer wolfcrypt.Sha512Free(sha512)
    
    wolfcrypt.Sha512Update(sha512, data, uint32(len(data)))
    hash512 := make([]byte, 64)
    wolfcrypt.Sha512Final(sha512, hash512)
    fmt.Printf("SHA-512: %x\n", hash512)
}

3. AES加密解密

package main

import (
    "fmt"
    "github.com/wolfssl/go-wolfssl/wolfcrypt"
)

func main() {
    key := []byte("32字节AES-256密钥示例1234567890123456")
    iv := []byte("16字节初始化向量")
    plaintext := []byte("需要加密的敏感数据")
    
    // AES-CBC加密
    aes := wolfcrypt.AesNew()
    defer wolfcrypt.AesFree(aes)
    
    // 设置加密密钥
    wolfcrypt.AesSetKey(aes, key, 32, iv, wolfcrypt.AES_ENCRYPTION)
    
    ciphertext := make([]byte, len(plaintext))
    wolfcrypt.AesCbcEncrypt(aes, ciphertext, plaintext, 
        uint32(len(plaintext)))
    fmt.Printf("加密结果: %x\n", ciphertext)
    
    // AES-CBC解密
    wolfcrypt.AesSetKey(aes, key, 32, iv, wolfcrypt.AES_DECRYPTION)
    
    decrypted := make([]byte, len(ciphertext))
    wolfcrypt.AesCbcDecrypt(aes, decrypted, ciphertext, 
        uint32(len(ciphertext)))
    fmt.Printf("解密结果: %s\n", decrypted)
}

4. 随机数生成

package main

import (
    "fmt"
    "github.com/wolfssl/go-wolfssl/wolfcrypt"
)

func main() {
    rng := wolfcrypt.Wc_RngNew()
    defer wolfcrypt.Wc_RngFree(rng)
    
    // 生成32字节随机数
    randomBytes := make([]byte, 32)
    wolfcrypt.Wc_RngGenerateBlock(rng, randomBytes, 32)
    
    fmt.Printf("随机数: %x\n", randomBytes)
    
    // 生成ECC密钥对所需的随机数
    eccKey := wolfcrypt.EccKeyNew()
    defer wolfcrypt.EccKeyFree(eccKey)
    
    wolfcrypt.EccInitKey(eccKey, 32, nil, nil)
    wolfcrypt.EccMakeKey(eccKey, 32, rng)
}

这些示例展示了go-wolfssl提供的底层加密原语接口。该封装直接暴露wolfCrypt C API，为需要FIPS认证或特定性能要求的Golang应用提供了替代方案。

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