-
Notifications
You must be signed in to change notification settings - Fork 0
/
CrypKeyEntry.java
76 lines (65 loc) · 1.66 KB
/
CrypKeyEntry.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
package crypSwing;
/**
* This class represents one entry in a "known" key,
* the knowledge that one ciphertext character represents one plaintext character.
* e.g. the second character is a plaintext E.
* @author Aaron Bitman
* @version 1.0 03/20/19
* @version 2.0 01/20/21
*/
public class CrypKeyEntry {
/**
* The index in the String.
* For example, the 1st character would be 0, the 2nd character would be 1, etc.
*/
private int index;
/**
* What that "index" character is in plaintext
*/
private char plainText;
/**
* Constructs one "null" entry in the key.
*/
CrypKeyEntry () {
this.index = -1;
this.plainText = ' ';
}
/**
* Gets the index
* @return The index
*/
public int getIndex() {
return index;
}
/**
* Gets the plaintext character
* @return the plaintext character
*/
public char getPlainText() {
return plainText;
}
/**
* Sets one entry in the key.
* @param index The index; see the "index" member for further clarification.
* @param plainText What that index character is in plaintext.
*/
void setCrypKeyEntry (int index, char plainText) {
this.index = index;
this.plainText = plainText;
}
/**
* Determines whether a plaintext word conforms to the key entry.
* @param plainText
* @return true if the word conforms, false otherwise
*/
boolean conforms (String plainText) {
return plainText.charAt(index) == this.plainText;
}
/**
* Determines if the entry is valid.
* @return true if the user entered a real key entry, false if (s)he quit entering entries
*/
boolean isValid () {
return index > -1;
}
}