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CheckSum = AppSecret + str(Nonce) + str(CurTime)
for i in range(1000):
sha = hashlib.sha1(CheckSum)
CheckSum = sha.hexdigest()
print CheckSum
import java.security.MessageDigest;
public class CheckSumBuilder {
// 计算并获取CheckSum
public static String getCheckSum(String appSecret, String nonce, String curTime) {
return encode("sha1", appSecret + nonce + curTime);
}
// 计算并获取md5值
public static String getMD5(String requestBody) {
return encode(“md5”, requestBody);
}
private static String encode(String algorithm, String value) {
if (value == null) {
return null;
}
try {
MessageDigest messageDigest
= MessageDigest.getInstance(algorithm);
messageDigest.update(value.getBytes());
return getFormattedText(messageDigest.digest());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private static String getFormattedText(byte[] bytes) {
int len = bytes.length;
StringBuilder buf = new StringBuilder(len * 2);
for (int j = 0; j < len; j++) {
buf.append(HEX_DIGITS[(bytes[j] >> 4) & 0x0f]);
buf.append(HEX_DIGITS[bytes[j] & 0x0f]);
}
return buf.toString();
}
private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
}
这个有平台提供的java实现