我在 Go 中創建一個簽名，例如：//I'm reading a file with -----BEGIN RSA PRIVATE KEY-----privateKeyPem := strings.Replace(privateKeyString, `\n`, "\n", -1) //file has '/n' instead of break lines for dev purposesblock, _ := pem.Decode([]byte(privateKeyPem))key, _ := x509.ParsePKCS1PrivateKey(block.Bytes)hashedString := sha256.Sum256([]byte(stringTosign))signature, err = rsa.SignPKCS1v15(rand.Reader, key, crypto2.SHA256, hashedString[:])signatureString := base64.StdEncoding.EncodeToString(signature)Java 程序接收變量 signatureString 并執行以下操作：byte[] keyBytes = Files.readAllBytes(Paths.get("./golangSignerPubKey.der"));X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);KeyFactory kf = KeyFactory.getInstance("RSA");PublicKey publicKey = kf.generatePublic(spec);Signature signature = Signature.getInstance("SHA256withRSA", "BC");signature.initVerify(publicKey);signature.update(stringUnsigned.getBytes());boolean signatureIsValid = signature.verify(Base64.getDecoder().decode(signatureString.getBytes()));但是 signatureIsValid 布爾值始終為假，我做錯了什么嗎？
1 回答
弒天下
TA貢獻1818條經驗 獲得超8個贊
我能夠驗證簽名。我在這里發帖以防有人遇到同樣的問題：
Go 中的簽名創建：
bytesToSign := []byte (stringToSign)
block, err8 := pem.Decode([]byte(privateKeyPem)) //-----BEGIN RSA PRIVATE KEY----
if err8 != nil {
logger.Debugf("Error trying decode endorser private key")
}
key, _ := x509.ParsePKCS1PrivateKey(block.Bytes)
h := sha256.New()
h.Write(bytesToSign)
d := h.Sum(nil)
signature, err = rsa.SignPKCS1v15(rand.Reader, key, crypto.SHA256, d)
if err != nil {
panic(err)
}
signatureString = base64.StdEncoding.EncodeToString(signature)
Java 中的簽名驗證（接收 signatureString）：我在 .pub 文件中有公鑰，并且：
byte[] keyBytes = Files.readAllBytes(Paths.get("./public_key.pub"));
String temp = new String(keyBytes);
String publicKeyPEM = temp.replace("-----BEGIN PUBLIC KEY-----\n", "");
publicKeyPEM = publicKeyPEM.replace("\n-----END PUBLIC KEY-----", "");
BASE64Decoder b64= new BASE64Decoder();
byte[] decoded = b64.decodeBuffer(publicKeyPEM);
X509EncodedKeySpec spec = new X509EncodedKeySpec(decoded);
KeyFactory kf = KeyFactory.getInstance("RSA");
publicKey = kf.generatePublic(spec);
Signature signature = Signature.getInstance("SHA256withRSA", "BC");
signature.initVerify(publicKey);
signature.update(bytesToVerify); //bytesToVerify = bytesToSign in go
byte[] signatureDecoded = Base64.getDecoder().decode(signatureString);
boolean endorserSignatureIsValid = signature.verify(signatureDecoded);
//It is now valid
我無法使用 Base64.getDecoder() (java.lang.IllegalArgumentException: Illegal base64 character a) 來解碼 publicKeyPEM，所以我使用了 BASE64Decoder。不知道為什么。
紫衣仙女
TA貢獻1839條經驗 獲得超15個贊
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