golang如何生成SSH公钥文件authorized_keys

[看着奢扣]

谢谢！
我生成的公钥是这样的：
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApAsNx7DxWcjyaRpNP2Vx
nFGkvtgpZwn77FBu7pbKU54YnsRXWor2+B2RBwscmlTjkCA46y1OTWAEBEAE1qP8
V2pZHC2Z7X07+PU4R4Rb28YzOXUdsdZMykGxr4YBbhQdrqgOzBJLeJY0f7siajjH
6eKn/raiLGWLAxzdZ3oMcdqShJsek1BTCFUT3IcwyCvGPVKTMTLMSzl6F8gxuVc4
YGCv8SHug7cjWo1H1kEx3kXpvNy3JcE2d/BEdQqPRzrfNueXHNpK/DNwNxcvMbZ9
u0X/QQGFgify3nPVfUw+eZhHPxmBGwWzMraa8qJ0s/mO1UXEfSjZIIvmpnSl2Xkv
CQIDAQAB
-----END PUBLIC KEY-----


如何转换成如下编码格式并写入 authorized_keys文件？
root@node001:~/.ssh# cat authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCy/2DmrG2TH+OD8ojZye4GQMM/OpCCxNjmLcZrOfCF+oBXSKtwhvdSdHcruGg48NwC59JULDru5/rSN5LEY0pYeCwuUBcqbzxwXJbECb7jubHiB2kuxZda7TbTbuOxye32I/DmrN6qEjwbSgBzYNqDHi/BxnurYLypbcr4s7ANLHOVUmhxOLcsIOWXUPdbSvzQd5Fjmp+b7NFMP7X0QhEpY8HoOxJB77phm/PUFBbSaEWFUWAyYyDNCzpzLRDlm+jiM9uYMp1WFygpARKYD0iHc0fpBvhLW0VlYvhZKvFfZOfHru8BUfIR855tUj6b/f7QL39UOjUzb5rhAxUJYjlR Generated-by-haff

[看着奢扣]

也就是说 AAAAB3NzaC1yc2EAAAADAQABAAABAQCy/2DmrG2TH+OD8ojZye4GQMM/OpCCxNjmLcZrOfCF+oBXSKtwhvdSdHcruGg48NwC59JULDru5/rSN5LEY0pYeCwuUBcqbzxwXJbECb7jubHiB2kuxZda7TbTbuOxye32I/DmrN6qEjwbSgBzYNqDHi/BxnurYLypbcr4s7ANLHOVUmhxOLcsIOWXUPdbSvzQd5Fjmp+b7NFMP7X0QhEpY8HoOxJB77phm/PUFBbSaEWFUWAyYyDNCzpzLRDlm+jiM9uYMp1WFygpARKYD0iHc0fpBvhLW0VlYvhZKvFfZOfHru8BUfIR855tUj6b/f7QL39UOjUzb5rhAxUJYjlR 是如何根据公钥生成的

[看着奢扣]

谢谢2楼， 我一开始以为api都在x509的包里

[qybao]

pem格式转成ssh，自己查下api就可以解决了
for example

import (
    "fmt"
    "encoding/pem"
    "crypto/rsa"
    "crypto/x509"
    "golang.org/x/crypto/ssh"
)

func main() {
    p := `-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApAsNx7DxWcjyaRpNP2Vx
nFGkvtgpZwn77FBu7pbKU54YnsRXWor2+B2RBwscmlTjkCA46y1OTWAEBEAE1qP8
V2pZHC2Z7X07+PU4R4Rb28YzOXUdsdZMykGxr4YBbhQdrqgOzBJLeJY0f7siajjH
6eKn/raiLGWLAxzdZ3oMcdqShJsek1BTCFUT3IcwyCvGPVKTMTLMSzl6F8gxuVc4
YGCv8SHug7cjWo1H1kEx3kXpvNy3JcE2d/BEdQqPRzrfNueXHNpK/DNwNxcvMbZ9
u0X/QQGFgify3nPVfUw+eZhHPxmBGwWzMraa8qJ0s/mO1UXEfSjZIIvmpnSl2Xkv
CQIDAQAB
-----END PUBLIC KEY-----` //这里为了方便，省略读文件
    b := []byte(p) //如果是读文件，b, err := ioutil.ReadFile(“your_pem_file”)
    block, _ := pem.Decode(b)
    if block == nil {
        panic("invalid public key data")
    }
    if block.Type != "PUBLIC KEY" {
        panic(fmt.Sprintf("invalid public key type : %s", block.Type))
    }
    keyInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
    if err != nil {
        panic("failed to convert bytes to public key.")
    }
    key, ok := keyInterface.(*rsa.PublicKey)
    if !ok {
        panic("not RSA public key")
    }
    skey, err := ssh.NewPublicKey(key)
    if (err != nil) {
    	panic("failed to convert ras key to ssh key.")
    }
    b = ssh.MarshalAuthorizedKey(skey)
    fmt.Printf("result: %v", string(b))
}