项目：https://github.com/cook-code-jazor/x509js

0、支持算法

algorithmType: RSA, algorithmParameters: 2048/4096

algorithmType: ECC, algorithmParameters: P-256/P-384/P-521

1、生成密钥对

使用指定的算法和参数，生成非对称加密密钥对。

X509.keypair(
    algorithmType: String, 
    algorithmParameters: String | Integer
) : Promise<KeyPair>

const response = await X509.keypair('ECC')

console.log(response)

/**
-----BEGIN PRIVATE KEY-----
MIG/AgEAMBAGByqGSM49AgEGBSuBBAAiBIGnMIGkAgEBBDCFf0WeXpl5TSU8+sK2
UpJZcfNFu8X0HzJwAXBZOK/wy4PsQRqtri/JjgarmtD9N9+gBwYFK4EEACKhZANi
AARC6NScZIRjcO4BGUvNIF29DUsjC7NymGCHdl1r8dQ9VwZnytzmGH1VbGRGVihg
l9R1uRk0cVC1ejlH23FuUJwBMKd/Qe5SxUuyx9nZOa7R5FFkDa4IENi9YokWpovU
AfE=
-----END PRIVATE KEY-----

-----BEGIN PUBLIC KEY-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEQujUnGSEY3DuARlLzSBdvQ1LIwuzcphg
h3Zda/HUPVcGZ8rc5hh9VWxkRlYoYJfUdbkZNHFQtXo5R9txblCcATCnf0HuUsVL
ssfZ2Tmu0eRRZA2uCBDYvWKJFqaL1AHx
-----END PUBLIC KEY-----
*/

2、生成CSR

使用指定算法和参数生成证书签发请求(CSR)，至少要提供subject，可提供subjectAltNames。

X509.csr(
    algorithmType: String, 
    algorithmParameters: String | Integer, 
    subject: X509Name, 
    subjectAltNames: SubjectAltNames | null
) : Promise<CSRResponse>

示例1

//仅使用commonName生成CSR。
const subject = X509.X509Name('name.com');
const response = await X509.csr('ECC', 'P-384', subject, null)

console.log(response.csr)
console.log(response.private_key)
console.log(response.public_key)

/**
-----BEGIN CERTIFICATE REQUEST-----
MIIBCjCBkAIBADATMREwDwYDVQQDDAhuYW1lLmNvbTB2MBAGByqGSM49AgEGBSuB
BAAiA2IABKt6ZhC8Wm2vnUHTj6hq/AdSrPsu6TIUA/V8J4MijXPQA97s/eeWWSPb
aocYjFmfBptDGHKFcgjxT5u0W8jx8V0KrxtLKuah904YheMZr1cMwRDx4Ko8iCVL
48YVTfIJVTAKBggqhkjOPQQDAgNpADBmAjEA5agr642TPRjBbarkX2/V52CKVe0B
p0zuvZH1Jb+IOOj+slUGY6IdekroY+Nhm2iyAjEA9Ab45+J1ZHS2vBF8VGQmYdPH
hbfMpeFIrfAtBg3Q+a9xfy0vR8nNL00P76uRT7F9
-----END CERTIFICATE REQUEST-----

-----BEGIN PRIVATE KEY-----
MIG/AgEAMBAGByqGSM49AgEGBSuBBAAiBIGnMIGkAgEBBDCIbFAazhcPz4SIXgfi
Wq8sv87o8uZVsucE4YLFFClQ5z0RidMVdcRNcwnTwrzJVW6gBwYFK4EEACKhZANi
AASremYQvFptr51B04+oavwHUqz7LukyFAP1fCeDIo1z0APe7P3nllkj22qHGIxZ
nwabQxhyhXII8U+btFvI8fFdCq8bSyrmofdOGIXjGa9XDMEQ8eCqPIglS+PGFU3y
CVU=
-----END PRIVATE KEY-----

-----BEGIN PUBLIC KEY-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEq3pmELxaba+dQdOPqGr8B1Ks+y7pMhQD
9XwngyKNc9AD3uz955ZZI9tqhxiMWZ8Gm0MYcoVyCPFPm7RbyPHxXQqvG0sq5qH3
ThiF4xmvVwzBEPHgqjyIJUvjxhVN8glV
-----END PUBLIC KEY-----
*/

示例2

//构造主题
const subject = X509.X509Name('name.com');

//extend field
subject.org('orgname')
    .org_unit('Unit')
    .email('test@gm.com')
    .state('State')
    .country('CN')
    .location('City');

//构造SAN（使用者别名）
const subjectAltNames = X509
    .SubjectAltNames()
    .add('name.com')
    .add('*.name.com')
    .add(['*.loc.name.com', '*.sev.name.com'])

//使用主题信息和SAN生成CSR
const response = await X509.csr('ECC', 'P-384', subject, subjectAltNames)

console.log(response)