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| Original file line number | Diff line number | Diff line change |
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@@ -20,4 +20,4 @@ | |
| package examples | ||
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| // 当前极光 SDK 使用范例模块的版本号。 | ||
| const Version = "v0.1.1" | ||
| const Version = "v0.1.2" | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * | ||
| * Copyright 2025 calvinit/jiguang-sdk-go authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * | ||
| */ | ||
|
|
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| package jiguang | ||
|
|
||
| import ( | ||
| "crypto/elliptic" | ||
| "crypto/rand" | ||
| "encoding/base64" | ||
| "errors" | ||
| "fmt" | ||
| "math/big" | ||
|
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| "github.com/calvinit/jiguang-sdk-go/third_party/gmsm/sm2" | ||
| ) | ||
|
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| const ( | ||
| sm2B64PubKey = "BPj6Mj/T444gxPaHc6CDCizMRp4pEl14WI2lvIbdEK2c+5XiSqmQt2TQc8hMMZqfxcDqUNQW95puAfQx1asv3rU=" | ||
| sm2B64PrivKey = "EjRWeJA=" // N/A: 在客户端 SDK 中不会使用私钥，因此不提供私钥，私钥应该由极光服务端保存。 | ||
| ) | ||
|
|
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| var ( | ||
| sm2PubKey *sm2.PublicKey | ||
| sm2PrivKey *sm2.PrivateKey | ||
| ) | ||
|
|
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| func init() { | ||
| var err error | ||
|
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| // 初始化 SM2 公钥 | ||
| sm2PubKey, err = desm2PubKey(sm2B64PubKey) | ||
| if err != nil { | ||
| panic(fmt.Sprintf("failed to initialize SM2 public key: %v", err)) | ||
| } | ||
|
|
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| // 初始化 SM2 私钥 | ||
| sm2PrivKey, err = desm2PrivKey(sm2B64PrivKey) | ||
| if err != nil { | ||
| panic(fmt.Sprintf("failed to initialize SM2 private key: %v", err)) | ||
| } | ||
| } | ||
|
|
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| // 从 Base64 编码解析 SM2 公钥。 | ||
| func desm2PubKey(b64PubKey string) (*sm2.PublicKey, error) { | ||
| pubKeyBytes, err := base64.StdEncoding.DecodeString(b64PubKey) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to decode Base64 SM2 public key: %w", err) | ||
| } | ||
|
|
||
| curve := sm2.P256Sm2() // 使用 sm2p256v1 曲线 | ||
| x, y := elliptic.Unmarshal(curve, pubKeyBytes) // 反序列化为椭圆曲线点 | ||
| if x == nil || y == nil { | ||
| return nil, errors.New("invalid SM2 public key: unable to unmarshal curve point") | ||
| } | ||
|
|
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| // 返回解析后的公钥 | ||
| return &sm2.PublicKey{ | ||
| Curve: curve, | ||
| X: x, | ||
| Y: y, | ||
| }, nil | ||
| } | ||
|
|
||
| // 从 Base64 编码解析 SM2 私钥。 | ||
| func desm2PrivKey(b64PrivKey string) (*sm2.PrivateKey, error) { | ||
| privKeyBytes, err := base64.StdEncoding.DecodeString(b64PrivKey) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to decode Base64 SM2 private key: %w", err) | ||
| } | ||
|
|
||
| curve := sm2.P256Sm2() // 使用 sm2p256v1 曲线 | ||
| privKey := new(sm2.PrivateKey) | ||
| privKey.D = new(big.Int).SetBytes(privKeyBytes) // 将字节数组转换为大整数 | ||
| privKey.PublicKey.Curve = curve // 设置公钥曲线 | ||
| privKey.PublicKey.X, privKey.PublicKey.Y = curve.ScalarBaseMult(privKeyBytes) // 计算公钥坐标 | ||
|
|
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| return privKey, nil | ||
| } | ||
|
|
||
| // 使用 SM2 公钥加密数据并返回 Base64 编码字符串。 | ||
| func EncryptWithSM2(data []byte) (string, error) { | ||
| if sm2PubKey == nil { | ||
| return "", errors.New("SM2 public key not initialized") | ||
| } | ||
|
|
||
| cipherBytes, err := sm2.Encrypt(sm2PubKey, data, rand.Reader, sm2.C1C2C3) | ||
| if err != nil { | ||
| return "", fmt.Errorf("SM2 encryption error: %w", err) | ||
| } | ||
|
|
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| return base64.StdEncoding.EncodeToString(cipherBytes), nil | ||
| } | ||
|
|
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| // 使用 SM2 私钥解密 Base64 编码的加密数据。 | ||
| func DecryptWithSM2(data string) ([]byte, error) { | ||
| if sm2PrivKey == nil { | ||
| return nil, errors.New("SM2 private key not initialized") | ||
| } | ||
|
|
||
| cipherBytes, err := base64.StdEncoding.DecodeString(data) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to decode data: %w", err) | ||
| } | ||
|
|
||
| plainBytes, err := sm2.Decrypt(sm2PrivKey, cipherBytes, sm2.C1C2C3) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("SM2 decryption error: %w", err) | ||
| } | ||
|
|
||
| return plainBytes, nil | ||
| } |
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