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feature: support signature key Rsa and ed25519 (adshao#579)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package common | ||
|
|
||
| import ( | ||
| "crypto" | ||
| "crypto/ed25519" | ||
| "crypto/hmac" | ||
| "crypto/rand" | ||
| "crypto/rsa" | ||
| "crypto/sha256" | ||
| "crypto/x509" | ||
| "encoding/base64" | ||
| "encoding/pem" | ||
| "errors" | ||
| "fmt" | ||
| ) | ||
|
|
||
| const ( | ||
| KeyTypeHmac = "HMAC" | ||
| KeyTypeRsa = "RSA" | ||
| KeyTypeEd25519 = "ED25519" | ||
| ) | ||
|
|
||
| func SignFunc(keyType string) (func(string, string) (*string, error), error) { | ||
| switch { | ||
| case keyType == KeyTypeHmac: | ||
| return Hmac, nil | ||
| case keyType == KeyTypeRsa: | ||
| return Rsa, nil | ||
| case keyType == KeyTypeEd25519: | ||
| return Ed25519, nil | ||
| default: | ||
| return nil, fmt.Errorf("unsupported keyType=%s", keyType) | ||
| } | ||
| } | ||
|
|
||
| func Hmac(secretKey string, data string) (*string, error) { | ||
| mac := hmac.New(sha256.New, []byte(secretKey)) | ||
| _, err := mac.Write([]byte(data)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| encodeData := fmt.Sprintf("%x", (mac.Sum(nil))) | ||
| return &encodeData, nil | ||
| } | ||
|
|
||
| func Rsa(secretKey string, data string) (*string, error) { | ||
| block, _ := pem.Decode([]byte(secretKey)) | ||
| if block == nil { | ||
| return nil, errors.New("Rsa pem.Decode failed, invalid pem format secretKey") | ||
| } | ||
| privateKey, err := x509.ParsePKCS8PrivateKey(block.Bytes) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("Rsa ParsePKCS8PrivateKey failed, error=%v", err.Error()) | ||
| } | ||
| rsaPrivateKey, ok := privateKey.(*rsa.PrivateKey) | ||
| if !ok { | ||
| return nil, fmt.Errorf("Rsa convert PrivateKey failed") | ||
| } | ||
| hashed := sha256.Sum256([]byte(data)) | ||
| signature, err := rsa.SignPKCS1v15(rand.Reader, rsaPrivateKey, crypto.SHA256, hashed[:]) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| encodedSignature := base64.StdEncoding.EncodeToString(signature) | ||
| return &encodedSignature, nil | ||
| } | ||
|
|
||
| func Ed25519(secretKey string, data string) (*string, error) { | ||
| block, _ := pem.Decode([]byte(secretKey)) | ||
| if block == nil { | ||
| return nil, fmt.Errorf("Ed25519 pem.Decode failed, invalid pem format secretKey") | ||
| } | ||
| privateKey, err := x509.ParsePKCS8PrivateKey(block.Bytes) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("Ed25519 call ParsePKCS8PrivateKey failed, error=%v", err.Error()) | ||
| } | ||
| ed25519PrivateKey, ok := privateKey.(ed25519.PrivateKey) | ||
| if !ok { | ||
| return nil, fmt.Errorf("Ed25519 convert PrivateKey failed") | ||
| } | ||
| pk := ed25519.PrivateKey(ed25519PrivateKey) | ||
| signature := ed25519.Sign(pk, []byte(data)) | ||
| encodedSignature := base64.StdEncoding.EncodeToString(signature) | ||
| return &encodedSignature, nil | ||
| } |
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