Book Cipher Word Coordinate Lookup
Lookup exact one-based line/word coordinates in caller supplied canonical book text, no punctuation normalization or assumed book edition. Classical educational encoding only; not secure encryption, no hidden normalization or inferred key.
Description
A book cipher reference depends on a precise edition and tokenization.
A book cipher reference depends on a precise edition and tokenization.1
A line-and-word lookup retrieves caller text rather than discovering which book was used. Use Book Cipher Word Coordinate Lookup to evaluate the supplied inputs under the specific model below.
When to use Book Cipher Word Coordinate Lookup
Use Book Cipher Word Coordinate Lookup to evaluate the supplied inputs under the specific model below. Choose the intended encoding, alphabet or check and keep the exact character, key and measurement conventions described below.
How to use Book Cipher Word Coordinate Lookup and understand its results
- Choose the intended encoding, alphabet or check and keep the exact character, key and measurement conventions described below.
- Enter Caller book lines, Line one based, Word one based using the field table and validation rules below, then run the tool.
- Read Word and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerBookLines | Caller book lines | array of string | Required; constraints below |
| lineOneBased | Line one based | number | Required; constraints below |
| wordOneBased | Word one based | number | Required; constraints below |
Enter a nonempty array of book lines, a one-based line number and a one-based word number within that selected line. The selected line must consist of nonempty uppercase A–Z words separated by single spaces; unselected lines are not subjected to that word-content check. Return the chosen word unchanged. No book or edition is supplied or fetched.
word = bookLines[lineNumber−1].split(singleSpace)[wordNumber−1] Field order, units and branch conditions follow the implementation explanation above.
| Output field | Meaning | Value type |
|---|---|---|
| word | Word | string |
{
"input": {
"callerBookLines": [
"ONE TWO",
"THREE FOUR"
],
"lineOneBased": 2,
"wordOneBased": 1
},
"output": {
"word": "THREE"
}
}Limitations and assumptions
A line-and-word lookup retrieves caller text rather than discovering which book was used. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
This educational transformation or format check does not establish modern cryptographic confidentiality, authentication or key security.
Alternative or Complementary methods
Use AD FGX Cipher Tool for a related task: ADFGX combines five-by-five coordinate substitution with keyed column transposition.
Use Polybius Square Coordinate Lookup for a related task: A Polybius square maps symbols to row and column coordinates.
References
-
Book Cipher Word Coordinate Lookup — tool.io
Similar or alternative tools
- AD FGX Cipher Tool
ADFGX combines five-by-five coordinate substitution with keyed column transposition.
- Polybius Square Coordinate Lookup
A Polybius square maps symbols to row and column coordinates.