有人知道我將如何將java代碼轉換成python嗎？在/**

* signs the data for the account account

*/

private byte[] sign(String pkStr,byte[] data, String keyType) throws Exception {

BASE64Decoder decoder = new BASE64Decoder();

KeyFactory keyFac = null;

//instantiate the key factory based on the key alg type

if(keyType.equals("DSA")){

keyFac = KeyFactory.getInstance("DSA");

}else if(keyType.equals("RSA")){

keyFac = KeyFactory.getInstance("RSA");

}

//generate the public key

PKCS8EncodedKeySpec dprks = new PKCS8EncodedKeySpec(decoder.decodeBuffer(pkStr));

PrivateKey pk = keyFac.generatePrivate(dprks);

return(signBytes(data,pk,keyType));

}

/**

* sign the data with the key

*/

private byte[] signBytes(byte [] data,

PrivateKey signingPrivateKey, String keyType)throws Exception {

Signature dsa = null;

//instantiate the signature alg based on the key type

if(keyType.equals("DSA")){

dsa = Signature.getInstance("SHA1withDSA");

}else if(keyType.equals("RSA")){

dsa = Signature.getInstance("SHA1withRSA");

}

/* Initializing the object with a private key */

dsa.initSign(signingPrivateKey);

/* Update and sign the data */

dsa.update(data);

byte[] sig = dsa.sign();

return sig;

}

“keyType”似乎總是被傳遞為“DSA”，所以我研究了M2Crypto.DSA，這看起來很有前途。這個數字簽名但是，函數返回一個由2字節字符串組成的元組，我根本不知道該如何處理。在

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