您可以将值直接放入
rsa.PublicKey，可以按原样使用。由于要将其编码为pem编码的x.509，因此可以使用该
x509.MarshalPKIXPublicKey函数封送der块，并使用pem包对其进行编码。
解开示例中的第一个键后
jwk：
// depre the base64 bytes for nnb, err := base64.RawURLEncoding.DepreString(jwk["n"])if err != nil { log.Fatal(err)}e := 65537// The default exponent is usually 65537, so just compare the// base64 for [1,0,1] or [0,1,0,1]if jwk["e"] != "AQAB" && jwk["e"] != "AAEAAQ" { // still need to depre the big-endian int log.Fatal("need to deocde e:", jwk["e"])}pk := &rsa.PublicKey{ N: new(big.Int).SetBytes(nb), E: e,}der, err := x509.MarshalPKIXPublicKey(pk)if err != nil { log.Fatal(err)}block := &pem.Block{ Type: "RSA PUBLIC KEY", Bytes: der,}var out bytes.Bufferpem.Enpre(&out, block)fmt.Println(out.String())将输出：
-----BEGIN RSA PUBLIC KEY-----MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAok6rvXu95337IxsDXrKzlIqw/I/zPDG8JyEw2CTOtNMoDi1QzpXQVMGj2snNEmvNYaCTmFf51I+EDgeFLLexr40jzBXlg72quV4aw4yiNuxkigW0gMA92OmaT2jMRIdDZM8mVokoxyPfLub2YnXHFq0XuUUgkX/TlutVhgGbyPN0M12teYZtMYo2AUzIRggONhHvnibHP0CPWDjCwSfp3On1Recn4DPxbn3DuGslF2myalmCtkujNcrhHLhwYPP+yZFb8e0XSNTcQvXaQxAqmnWH6NXcOtaeWMQe43PNTAyNinhndgI8ozG3Hz+1NzHssDH/yk6UYFSszhDbWAzyqwIDAQAB-----END RSA PUBLIC KEY-----
https://play.golang.org/p/Ch6Nr9F6Ik
