paotang_encrypt.java

@Override
@NotNull
public String encrypt(@NotNull String plainText, @NotNull String key) {
    Intrinsics.checkNotNullParameter(plainText, "plainText");
    Intrinsics.checkNotNullParameter(key, "key");
    Cipher cipher = getCipher(1, key);
    byte[] plainTextBytes = plainText.getBytes(Charsets.UTF_8);
    Intrinsics.checkNotNullExpressionValue(plainTextBytes, "(this as java.lang.String).getBytes(charset)");
    byte[] encryptedBytes = Base64.encode(cipher.doFinal(plainTextBytes));
    Intrinsics.checkNotNullExpressionValue(encryptedBytes, "encode(encryptedBytes)");
    return StringsKt__StringsJVMKt.replace$default(new String(encryptedBytes, Charsets.UTF_8), "(\\r|\\n|\\r\\n)+", "", false, 4, (Object) null);
}
@Override
@NotNull
public String generateRandomString(int length) {
    SecureRandom random = new SecureRandom();
    StringBuilder builder = new StringBuilder(length);
    char[] characters = this.characterArray.getCharacters();

    if (length > 0) {
        int i = 0;
        do {
            i++;
            builder.append(characters[random.nextInt(characters.length)]);
        } while (i < length);
    }

    return builder.toString();
}