keys 使用

RSA 密钥示例

生成 rsa 公钥及私钥,并使用公钥的 OAEP 填充模式加密,用私钥的 OAEP 填充模式解密

import crypto.keys.*
import crypto.digest.*
import std.io.*
import std.crypto.digest.*

main() {
    var rsaPri = RSAPrivateKey(2048)
    var rsaPub = RSAPublicKey(rsaPri)

    var str: String = "hello world, hello cangjie"
    var bas1 = ByteBuffer()
    var bas2 = ByteBuffer()
    var bas3 = ByteBuffer()
    bas1.write(str.toArray())

    var encOpt = OAEPOption(SHA1(), SHA256())
    rsaPub.encrypt(bas1, bas2, padType: OAEP(encOpt))
    var encOpt2 = OAEPOption(SHA1(), SHA256())
    rsaPri.decrypt(bas2, bas3, padType: OAEP(encOpt2))

    var buf = Array<Byte>(str.size, repeat:0)
    bas3.read(buf)
    if (str.toArray() == buf){
        println("success")
    } else {
        println("fail")
    }
}

运行结果:

success

从文件中读取 rsa 公钥和私钥,并使用私钥的 PKCS1 填充模式签名,用公钥的 PKCS1 填充模式验证签名结果

说明: >

  • 需要自行准备公私钥文件。
import crypto.keys.*
import crypto.digest.*
import std.crypto.digest.*
import std.fs.*
import std.io.*

main() {
    var pemPri = String.fromUtf8(readToEnd(File("./files/rsaPri.pem", OpenOption.Open(true, false))))
    var rsaPri = RSAPrivateKey.decodeFromPem(pemPri)

    var pemPub = String.fromUtf8(readToEnd(File("./files/rsaPub.pem", OpenOption.Open(true, false))))
    var rsaPub = RSAPublicKey.decodeFromPem(pemPub)

    var str: String = "helloworld"
    var sha512Instance = SHA512()
    var md: Array<Byte> = digest(sha512Instance, str)

    var sig = rsaPri.sign(sha512Instance, md, padType: PKCS1)
    if (rsaPub.verify(sha512Instance, md, sig, padType: PKCS1)){
        println("verify successful")
    }
}

运行结果:

verify successful

ECDSA 密钥示例

使用 ECDSA 密钥使用示例。

生成 ECDSA 公钥及私钥,并使用私钥签名,公钥验证签名结果

import crypto.keys.*
import crypto.digest.*
import std.convert.*
import std.crypto.digest.*

main() {
    var ecPri = ECDSAPrivateKey(P224)
    var ecPub = ECDSAPublicKey(ecPri)

    var str: String = "helloworld"
    var sha512Instance = SHA512()
    var md: Array<Byte> = digest(sha512Instance, str)

    var sig = ecPri.sign(md)
    if (ecPub.verify(md, sig)){
        println("verify successful")
    }
}

运行结果:

verify successful

SM2 密钥示例

生成 SM2 公钥及私钥,并使用私钥签名,公钥验证签名结果

import crypto.keys.*
import crypto.digest.*
import std.convert.*
import std.crypto.digest.*
import std.fs.*
import std.io.*

main(): Unit {
    // 无参生成公钥私钥
    let sm2PrivateKey = SM2PrivateKey()
    let sm2PublicKey = SM2PublicKey(sm2PrivateKey)

    //公钥和私钥导出
    let priPem = sm2PrivateKey.encodeToPem()
    let file1: File = File("./sm2Pri.pem", OpenOption.CreateOrTruncate(true))
    file1.write(priPem.encode().toArray())
    file1.close()

    let pubPem = sm2PublicKey.encodeToPem()
    let file2: File = File("./sm2Pub.pem", OpenOption.CreateOrTruncate(true))
    file2.write(pubPem.encode().toArray())
    file2.close()

    //公钥加密 私钥解密
    let str: String = "helloworld"
    let encresult = sm2PublicKey.encrypt(str.toArray())
    let decresult = sm2PrivateKey.decrypt(encresult)
    println(String.fromUtf8(decresult))

    //私钥签名 公钥验证
    let strSig: String = "helloworld"
    let sigRe = sm2PrivateKey.sign(strSig.toArray())
    let verifyre  = sm2PublicKey.verify(strSig.toArray(), sigRe)
    println(verifyre)

    // 私钥公钥导入
    let pemPri = String.fromUtf8(readToEnd(File("./sm2Pri.pem", OpenOption.Open(true, false))))
    let sm2PrivateKeyNew = SM2PrivateKey.decodeFromPem(pemPri)
    let pemPub = String.fromUtf8(readToEnd(File("./sm2Pub.pem", OpenOption.Open(true, false))))
    let sm2PublicKeyNew = SM2PublicKey.decodeFromPem(pemPub)

    }

运行结果:

helloworld
true