话不多说直接上代码:
package mainimport ("crypto""crypto/rand""crypto/rsa""crypto/sha256""crypto/x509""encoding/hex""encoding/pem""errors""fmt")func main() {//rsa 密钥文件产生fmt.Println("-------------------------------获取RSA公私钥-----------------------------------------")prvKey, pubKey := GenRsaKey()fmt.Println(string(prvKey))fmt.Println(string(pubKey))fmt.Println("-------------------------------进行签名与验证操作-----------------------------------------")var data = "卧了个槽，这么神奇的吗？？！！！ ԅ(¯﹃¯ԅ) ！！！！！！）"fmt.Println("对消息进行签名操作...")signData := RsaSignWithSha256([]byte(data), prvKey)fmt.Println("消息的签名信息： ", hex.EncodeToString(signData))fmt.Println("\n对签名信息进行验证...")if RsaVerySignWithSha256([]byte(data), signData, pubKey) {fmt.Println("签名信息验证成功，确定是正确私钥签名！！")}fmt.Println("-------------------------------进行加密解密操作-----------------------------------------")ciphertext := RsaEncrypt([]byte(data), pubKey)fmt.Println("公钥加密后的数据：", hex.EncodeToString(ciphertext))sourceData := RsaDecrypt(ciphertext, prvKey)fmt.Println("私钥解密后的数据：", string(sourceData))}//RSA公钥私钥产生func GenRsaKey() (prvkey, pubkey []byte) {// 生成私钥文件privateKey, err := rsa.GenerateKey(rand.Reader, 1024)if err != nil {panic(err)}derStream := x509.MarshalPKCS1PrivateKey(privateKey)block := &pem.Block{Type: "RSA PRIVATE KEY",Bytes: derStream,}prvkey = pem.EncodeToMemory(block)publicKey := &privateKey.PublicKeyderPkix, err := x509.MarshalPKIXPublicKey(publicKey)if err != nil {panic(err)}block = &pem.Block{Type: "PUBLIC KEY",Bytes: derPkix,}pubkey = pem.EncodeToMemory(block)return}//签名func RsaSignWithSha256(data []byte, keyBytes []byte) []byte {h := sha256.New()h.Write(data)hashed := h.Sum(nil)block, _ := pem.Decode(keyBytes)if block == nil {panic(errors.New("private key error"))}privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)if err != nil {fmt.Println("ParsePKCS8PrivateKey err", err)panic(err)}signature, err := rsa.SignPKCS1v15(rand.Reader, privateKey, crypto.SHA256, hashed)if err != nil {fmt.Printf("Error from signing: %s\n", err)panic(err)}return signature}//验证func RsaVerySignWithSha256(data, signData, keyBytes []byte) bool {block, _ := pem.Decode(keyBytes)if block == nil {panic(errors.New("public key error"))}pubKey, err := x509.ParsePKIXPublicKey(block.Bytes)if err != nil {panic(err)}hashed := sha256.Sum256(data)err = rsa.VerifyPKCS1v15(pubKey.(*rsa.PublicKey), crypto.SHA256, hashed[:], signData)if err != nil {panic(err)}return true}// 公钥加密func RsaEncrypt(data, keyBytes []byte) []byte {//解密pem格式的公钥block, _ := pem.Decode(keyBytes)if block == nil {panic(errors.New("public key error"))}// 解析公钥pubInterface, err := x509.ParsePKIXPublicKey(block.Bytes)if err != nil {panic(err)}// 类型断言pub := pubInterface.(*rsa.PublicKey)//加密ciphertext, err := rsa.EncryptPKCS1v15(rand.Reader, pub, data)if err != nil {panic(err)}return ciphertext}// 私钥解密func RsaDecrypt(ciphertext, keyBytes []byte) []byte {//获取私钥block, _ := pem.Decode(keyBytes)if block == nil {panic(errors.New("private key error!"))}//解析PKCS1格式的私钥priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)if err != nil {panic(err)}// 解密data, err := rsa.DecryptPKCS1v15(rand.Reader, priv, ciphertext)if err != nil {panic(err)}return data}
运行结果：
-------------------------------获取RSA公私钥----------------------------------------------BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY----------BEGIN PUBLIC KEY-----MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCgPwlGJrWqTYaoMkI8jXkEI8ewQ7E57G2Fi91WTXMMK7X6GsT9VmnRcq++Rk/VS+4IPBlfWyVRg0NfQDyuKjed21fUPa9AIbpYWHgP/tojyeYC1+RaXncrt9kLp7nW4FZMJmzwU9hfxIB0nhDQqhJenjdBZuYZfkICfMqyqbVkAwIDAQAB-----END PUBLIC KEY------------------------------------进行签名与验证操作-----------------------------------------对消息进行签名操作...消息的签名信息： 24a29efbc27e7b84c3b0eed683af28915381b2a0312f5383143cdb804d3a16c2b4750fb1857445b46664b795b6cefd402c5cf25e0f28116b7b50f5c16e80af9f9481def0161c6dac7a5d05c56595b891d84091e444ef4012ba1a0efd5cd2ff17c6dfdc109a2a3349ae2523217706a03042ea16d84fcf7d3dae37ee36d2e8对签名信息进行验证...签名信息验证成功，确定是正确私钥签名！！-------------------------------进行加密解密操作-----------------------------------------公钥加密后的数据： 2b34d46a62317f4f5e5c8618671831c0970cef2eeddc0d3aca02e1d5b411a067844e1250a1f69cbb1cbcb0cb1964af85836faa346f9ce9fac2710d4fa18e49ee1c4c73496183952fa95a54dd2d633b115504f0a365bac6d022399059a53f51c474e5e4f0f8eefde61bb85d5d812b67114f5d419c33496acaf11d3d84828733f7私钥解密后的数据： 卧了个槽，这么神奇的吗？？！！！ ԅ(¯﹃¯ԅ) ！！！！！！）
