JAvaのMD 5暗号化の簡単な実現
1817 ワード
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public String md5Digest(String src) throws Exception {
// , :MD5, SHA-1
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] b = md.digest(src.getBytes("utf-8"));
return this.byte2HexStr(b);
}
private String byte2HexStr(byte[] b) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < b.length; i++) {
String s = Integer.toHexString(b[i] & 0xFF);
if (s.length() == 1) {
sb.append("0");
}
sb.append(s.toUpperCase());
}
return sb.toString();
}