我需要提供sha1和Base64的哈希密码,如下所示:
base64(sha1(password))
这是我试过的:
private static String convertToHex(byte[] data) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do {
if ((0 <= halfbyte) && (halfbyte <= 9)) {
buf.append((char) ('0' + halfbyte));
}
else {
buf.append((char) ('a' + (halfbyte - 10)));
}
halfbyte = data[i] & 0x0F;
} while(two_halfs++ < 1);
}
return buf.toString();
}
public static String SHA1(String password) throws NoSuchAlgorithmException, UnsupportedEncodingException {
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(password.getBytes("iso-8859-1"), 0, password.length());
byte[] sha1hash = md.digest();
return convertToHex(sha1hash);
}
而不是:
String encodedPass = Base64.encodeToString(password.getBytes(), Base64.DEFAULT);
但是这不能正常工作...... 也许有一些错误或更简单的方法吗?
答案 0 :(得分:0)
接下来的问题是: convertToHex(sha1hash) - 返回字符串,但为了正确使用Base64我需要把byte []放在这里:
Base64.encodeToString(byte[], Base64.DEFAULT);
所以解决方案非常简单:
public static String encodePassword(String password) throws NoSuchAlgorithmException, UnsupportedEncodingException {
String result;
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(password.getBytes("iso-8859-1"), 0, password.length());
byte[] sha1hash = md.digest();
result = Base64.encodeToString(sha1hash, Base64.DEFAULT);
result = result.substring(0, result.length()-1);
return result;
}