| 1 | package sshtest |
| 2 | |
| 3 | import ( |
| 4 | "crypto/ed25519" |
| 5 | "crypto/rand" |
| 6 | "encoding/pem" |
| 7 | |
| 8 | "golang.org/x/crypto/ssh" |
| 9 | ) |
| 10 | |
| 11 | // generateHostKey creates a fresh ed25519 SSH signer for the test server. |
| 12 | func generateHostKey() (ssh.Signer, error) { |
| 13 | _, priv, err := ed25519.GenerateKey(rand.Reader) |
| 14 | if err != nil { |
| 15 | return nil, err |
| 16 | } |
| 17 | return ssh.NewSignerFromKey(priv) |
| 18 | } |
| 19 | |
| 20 | // GenerateKeyPair returns a new ed25519 signer and its public key, for tests |
| 21 | // that exercise publickey auth. |
| 22 | func GenerateKeyPair() (ssh.Signer, ssh.PublicKey, error) { |
| 23 | _, priv, err := ed25519.GenerateKey(rand.Reader) |
| 24 | if err != nil { |
| 25 | return nil, nil, err |
| 26 | } |
| 27 | signer, err := ssh.NewSignerFromKey(priv) |
| 28 | if err != nil { |
| 29 | return nil, nil, err |
| 30 | } |
| 31 | return signer, signer.PublicKey(), nil |
| 32 | } |
| 33 | |
| 34 | // GenerateKeyPEM returns an unencrypted OpenSSH private key PEM alongside its |
| 35 | // public key, for tests that need an identity file on disk. |
| 36 | func GenerateKeyPEM() (pemBytes []byte, pub ssh.PublicKey, err error) { |
| 37 | _, priv, err := ed25519.GenerateKey(rand.Reader) |
| 38 | if err != nil { |
| 39 | return nil, nil, err |
| 40 | } |
| 41 | block, err := ssh.MarshalPrivateKey(priv, "") |
| 42 | if err != nil { |
| 43 | return nil, nil, err |
| 44 | } |
| 45 | signer, err := ssh.NewSignerFromKey(priv) |
| 46 | if err != nil { |
| 47 | return nil, nil, err |
| 48 | } |
| 49 | return pem.EncodeToMemory(block), signer.PublicKey(), nil |
| 50 | } |
| 51 | |
| 52 | // GenerateEncryptedKeyPEM returns an encrypted OpenSSH private key PEM and its |
| 53 | // public key, for tests that exercise passphrase-backed identity files. |
| 54 | func GenerateEncryptedKeyPEM(passphrase string) (pemBytes []byte, pub ssh.PublicKey, err error) { |
| 55 | _, priv, err := ed25519.GenerateKey(rand.Reader) |
| 56 | if err != nil { |
| 57 | return nil, nil, err |
| 58 | } |
| 59 | block, err := ssh.MarshalPrivateKeyWithPassphrase(priv, "", []byte(passphrase)) |
| 60 | if err != nil { |
| 61 | return nil, nil, err |
| 62 | } |
| 63 | signer, err := ssh.NewSignerFromKey(priv) |
| 64 | if err != nil { |
| 65 | return nil, nil, err |
| 66 | } |
| 67 | return pem.EncodeToMemory(block), signer.PublicKey(), nil |
| 68 | } |
| 69 |