package sshui import ( "crypto/rsa" "crypto/x509" "encoding/pem" ) // encodePrivateKeyToPEM encodes Private Key from RSA to PEM format func encodePrivateKeyToPEM(privateKey *rsa.PrivateKey) []byte { // Get ASN.1 DER format privDER := x509.MarshalPKCS1PrivateKey(privateKey) // pem.Block privBlock := pem.Block{ Type: "RSA PRIVATE KEY", Headers: map[string]string{"gr33tz": "tcp.direct"}, Bytes: privDER, } return pem.EncodeToMemory(&privBlock) }