explain xkcd - User contributions [en]

3054: Scream Cipher

2025-02-25T17:15:52Z

WKoA: Move community translators to example section (I think that's better?), organize them.

{{comic
| number = 3054
| date = February 21, 2025
| title = Scream Cipher
| image = scream_cipher_2x.png
| imagesize = 287x416px
| noexpand = true
| titletext = AAAAAA A ÃA̧AȂA̦ ǍÅÂÃĀÁȂ AAAAAAA!
}}

==Explanation==
{{incomplete|Created by A ÃA̧ȂÁAǍẢÂA̋ ȦÅĀ - Need to add more notes for the other cipher characters. Do NOT delete this tag too soon.}}
A {{w|Cipher}} is a method of encryption, where characters, or sometimes words, are substituted for other characters in a set pattern, allowing for arbitrary strings to be enciphered using it. The complexity and strength of ciphers varies, from {{w|one-time pads}} and (historically) {{w|enigma machine|Enigma}} as stronger and more complex, to {{w|substitution ciphers}} as some of the weakest and least complex, where each character is simply given a set different symbol to represent it in the cipher.

This comic uses a substitution cipher, where all the letters of the English Alphabet are represented using the letter "A", with different {{w|diacritical marks}} to define the differences. See details about the 25 marks in the [[#Trivia|Trivia section]] below. This kind of cipher is often used on a recreational basis by children or casual enthusiasts, the similarity of the letters increasing the obscurity of the content and the skill or technology required for use, but there is also significant impracticality, as not only are substitution ciphers the easiest to break, but also the similarities in the letters do make the cipher hard to read and easy to misread, and the detail in the diacritical marks makes it easy to draw the "A"s incorrectly or ambiguously, potentially leading to [[3003: Sandwich Helix|part of the message being lost]]. This was our experience in the comments section of this very article, where one person implemented translator functions alongside another person crafting a message that failed to translate. However, the logic behind the code is mostly visual similarity, and if attentive to connecting concepts between the Latin and scream cipher alphabet, it could be quickly learned and translated in a glance.

It's named "Scream Cipher" (as a pun on {{w|stream cipher}}s, commonly used in computing) because the written form of a scream is often a long string of As, possibly with some other characters at the end (and often an exclamation point for emphasis), such as "Aaaaaah!" or "Aaaaaaagh!". The name may or may not be a reference to IBM's {{w|Scream_(cipher)|Scream cipher}} published in 2002.

In the comic, [[Cueball]] texts the ciphered version for the plaintext "HELLO", and [[Megan]] responds with that for "HI". The title text deciphers to "AAAAAA A SCARY MONSTER AAAAAAA!"

Another recent comic featuring all "A"s was [[2957: A Crossword Puzzle]].

Diacritics was also the main theme in [[1647: Diacritics]] (of course) and was previously also mentioned in [[1209: Encoding]] and in [[1857: Emoji Movie]] where they have an important part of the pun, and is mentioned in one point of the list in [[1957: 2018 CVE List]].

==Worked example==

Say we want to encode "Scream" in the Scream Cipher. First we would need to split out word into the letters, so S, C, R, E, A, M.

The first letter is S, so if we go to S in the table S is shown to become to Ã, C similarly becomes A̧, R becomes Ȃ, E corresponds to Á, A is the main letter so A is unchanged to A, and M becomes Ǎ. If we then write them again in order, we find SCREAM becomes ÃA̧ȂÁAǍ.

To turn cipher text back into normal text, the process is repeated in reverse. To translate A̧ẢA̯A̰ÁȂ, we go to A̧ in the table and find A̧ becomes C. Ả similarly becomes I, A̯ becomes P, A̰ becomes H, Á becomes E, and Ȃ becomes R. If we write the letters in order, we see that A̧ẢA̯A̰ÁȂ becomes CIPHER.

Text can be automatically translated using any of the following community implimentations:
* The first known translator hosted on [https://github.com/Reginald-Gillespie/ScreamCipher GitHub Pages].
* A more bare-bones [https://github.com/matthewpwatkins/scream-cipher/ implimentation] hosted on netlify.
* A terminal [https://github.com/klanderfri/ScreamCipher/ implimentation].

==Transcript==
:[The top of the panel has the 26 letters of the alphabet written, each followed by a hyphen and the letter "A" with a unique diacritical mark for each. "A - A" is the only letter in the top row, and the only one where that A on the right side doesn't have a diacritic. The next 25 is sorted in a 5 by 5 grid, with the first five letters after A in the first column, then the next 5 in the second column and so on:]
:{|
|A - A
|-
|B - Ȧ
|G - A̋
|L - Ă
|Q - A̤
|V - À
|-
|C - A̧
|H - A̰
|M - Ǎ
|R - Ȃ
|W - Ȁ
|-
|D - A̱
|I - Ả
|N - Â
|S - Ã
|X - A̽
|-
|E - Á
|J - A̓
|O - Å
|T - Ā
|Y - A̦
|-
|F - A̮
|K - Ạ
|P - A̯
|U - Ä
|Z - Ⱥ
|}
:[Beneath these letters we see Cueball and Megan typing on their phones, Cueball with two hands and Megan with one hand, small lines indicating the movement of their hands. Cueball and Megan is turned towards each other but with more separation than if they were engaged in normal discussion. They both look down at their phones not towards each other. The text they type is shown above their phone with a line starting in a starburst at the top of their phones going up the to the text.]
:Cueball's phone: A̰ÁĂĂÅ
:Megan's phone: A̰Ả

:[Caption below the panel:]
:In the '''''Scream Cipher''''', messages consist of all As, with different letters distinguished using diacritics.

==Trivia==
The {{w|Unicode}} names of the characters in the cipher are as follows:

{|class="wikitable"
! colspan=2 | Input !! colspan=3 | Substitution
|-
! Plain !! Unicode description !! Cipher !! Unicode description(s) !! Notes
|-
| A || U+0041 LATIN CAPITAL LETTER A || {{w|A}} || '''U+0041 LATIN CAPITAL LETTER A || Unadorned base character
|-
| B || U+0042 LATIN CAPITAL LETTER B || {{w|Ȧ}} || '''U+0226 LATIN CAPITAL LETTER A WITH {{w|Dot (diacritic)|DOT}} ABOVE || A with one dot over it, which can indicate a single change in math and science. Phonetic symbol for low central vowel.
|-
| C || U+0043 LATIN CAPITAL LETTER C || A̧ || U+0041 LATIN CAPITAL LETTER A, '''U+0327 {{w|Combining Diacritical Marks|COMBINING}} {{w|Cedilla|CEDILLA}}''' || Cedilla is often attached to a 'c', as in "français", as well as starting with 'c' itself. Appears similar to Ą (U+0104, A with ogonek) used in many language to denote a nasal a sound and in Polish to denote a nasal o sound, however the two can be distinguished by the direction of the diacritic.
|-
| D || U+0044 LATIN CAPITAL LETTER D || A̱ || U+0041 LATIN CAPITAL LETTER A, '''U+0331 COMBINING MACRON BELOW''' || Some see the lower bar as similar to the lower edge of the D.
|-
| E || U+0045 LATIN CAPITAL LETTER E || {{w|Á}} || '''U+00C1 LATIN CAPITAL LETTER A WITH ACUTE || Many words have an acute e, as in "fiancé".
|-
| F || U+0046 LATIN CAPITAL LETTER F || A̮ || U+0041 LATIN CAPITAL LETTER A, '''U+032E COMBINING BREVE BELOW''' || The breve adds a second line to the A, much like how an F has two lines.
|-
| G || U+0047 LATIN CAPITAL LETTER G || A̋ || U+0041 LATIN CAPITAL LETTER A, '''U+030B COMBINING {{w|Double acute accent|DOUBLE ACUTE}} ACCENT''' || Adds two acutes to a letter.
|-
| H || U+0048 LATIN CAPITAL LETTER H || A̰ || U+0041 LATIN CAPITAL LETTER A, '''U+0330 COMBINING TILDE BELOW''' || The low tilde has horizontal ink in the middle that moves vertical toward the sides, like an H.
|-
| I || U+0049 LATIN CAPITAL LETTER I || {{w|Ả}} || '''U+1EA2 LATIN CAPITAL LETTER A WITH HOOK ABOVE || The hook almost looks like half of a circle, and the lowercase letter I (i) has a circular shape (known as a tittle) above it.
|-
| J || U+004A LATIN CAPITAL LETTER J || A̓ || U+0041 LATIN CAPITAL LETTER A, '''U+0313 COMBINING COMMA ABOVE''' || The comma symbol looks like a small letter 'J' in some fonts
|-
| K || U+004B LATIN CAPITAL LETTER K || Ạ || '''U+1EA0 LATIN CAPITAL LETTER A WITH DOT BELOW || 
|-
| L || U+004C LATIN CAPITAL LETTER L || {{w|Ă}} || '''U+0102 LATIN CAPITAL LETTER A WITH {{w|Breve|BREVE}} ||
|-
| M || U+004D LATIN CAPITAL LETTER M || Ǎ || '''U+01CD LATIN CAPITAL LETTER A WITH {{w|caron|CARON}} || The top-centered caron is the same shape as the top center of the M.
|-
| N || U+004E LATIN CAPITAL LETTER N || {{w|Â}} || '''U+00C2 LATIN CAPITAL LETTER A WITH CIRCUMFLEX || The lowercase letter 'n' also looks like a circumflex in some scripts. The circumflex peak mirrors the peak at the top left of the N.
|-
| O || U+004F LATIN CAPITAL LETTER O || {{w|Å}} || '''U+00C5 LATIN CAPITAL LETTER A WITH RING ABOVE || The symbol contains the letter 'O'. In Scandinavian languages like Swedish, this combination of 'O' and 'A' is a letter unto itself, mostly used in words where a long 'a' sound has acquired a more 'o'-like sound.
|-
| P || U+0050 LATIN CAPITAL LETTER P || A̯ || U+0041 LATIN CAPITAL LETTER A, '''U+032F COMBINING INVERTED BREVE BELOW''' || Refer to R: P also has a curve at the top center, but is encoded with one below.
|-
| Q || U+0051 LATIN CAPITAL LETTER Q || A̤ || U+0041 LATIN CAPITAL LETTER A, '''U+0324 COMBINING DIAERESIS BELOW''' || The two dots below the baseline reflect the two times Randall's Q touch the baseline. In the Orthographies of Spanish, Catalan, French and Galician, the grapheme 'qu' normally represents a single sound, before vowels 'e' and 'i'. In the few exceptions where the 'u' is pronounced, a diaeresis is added to it.
|-
| R || U+0052 LATIN CAPITAL LETTER R || Ȃ || '''U+0202 LATIN CAPITAL LETTER A WITH {{w|Inverted breve|INVERTED BREVE}} ||
The inverted centered top curve mirrors the curve at the top center of an R.
|-
| S || U+0053 LATIN CAPITAL LETTER S || {{w|Ã}} || '''U+00C3 LATIN CAPITAL LETTER A WITH TILDE || Tilde looks like a sideways 'S'.
|-
| T || U+0054 LATIN CAPITAL LETTER T || {{w|Ā}} || '''U+0100 LATIN CAPITAL LETTER A WITH {{w|Macron (diacritic)|MACRON}} || The macron looks like the top horizontal line in the letter 'T'
|-
| U || U+0055 LATIN CAPITAL LETTER U || {{w|Ä}} || '''U+00C4 LATIN CAPITAL LETTER A WITH DIAERESIS || Many German and Swedish words have a 'Ä', as in "{{w|Die_Ärzte|Ärzte}}". Similar to the encoding for Q, the two top dots mirror the two times the script of U reaches the top line.
|-
| V || U+0056 LATIN CAPITAL LETTER V || {{w|À}} || '''U+00C0 LATIN CAPITAL LETTER A WITH GRAVE || Grave has the letter 'V' in it, as well as being half of its shape.
|-
| W || U+0057 LATIN CAPITAL LETTER W || Ȁ || '''U+0200 LATIN CAPITAL LETTER A WITH {{w|Double grave accent|DOUBLE GRAVE}} || The letter 'W' is visually two copies of the letter 'V'
|-
| X || U+0058 LATIN CAPITAL LETTER X || A̽ || U+0041 LATIN CAPITAL LETTER A, '''U+033D COMBINING X ABOVE''' || The symbol contains the letter 'X'.
|-
| Y || U+0059 LATIN CAPITAL LETTER Y || A̦ || U+0041 LATIN CAPITAL LETTER A, '''U+0326 COMBINING COMMA BELOW''' || Comma is used con conjuntion as the letter 'Y' in some languages like Spanish
|-
| Z || U+005A LATIN CAPITAL LETTER Z || {{w|Saanich_dialect#Writing_system|Ⱥ}} || '''U+023A LATIN CAPITAL LETTER A WITH STROKE || The strikethrough the letter A resembles the diagonal stroke of a capital "Z"
|}

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Language]]
[[Category:Cryptography]]
[[Category:Unicode]]
[[Category:Smartphones]]

3054: Scream Cipher

2025-02-22T15:13:24Z

WKoA: Remove duplicate line I added

{{comic
| number = 3054
| date = February 21, 2025
| title = Scream Cipher
| image = scream_cipher_2x.png
| imagesize = 287x416px
| noexpand = true
| titletext = AAAAAA A ÃA̧AȂA̦ ǍÅÂÃĀÁȂ AAAAAAA!
}}

==Explanation==
{{incomplete|Created by A ÃA̧ȂÁAǍẢÂA̋ ȦÅĀ - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
A {{w|Cipher}} is a method of encryption, where characters or sometimes words are substituted for other characters in a set pattern, allowing for arbitrary strings to be enciphered using it. The complexity and strength of ciphers varies, from {{w|one-time pads}} and (historically) {{w|enigma machine|Enigma}} as stronger and more complex, to {{w|substitution ciphers}} as some of the weakest and least complex, where each character is simply given a set different symbol to represent it in the cipher.

This comic uses a substitution cipher, where all the letters of the English Alphabet are represented using the letter "A", with different {{w|diacritical marks}} to define the differences. This kind of cipher is often used on a recreational basis by children or casual enthusiasts, the similarity of the letters increasing the obcurity of the content and the skill or technology required for use, but there is also significant impracticality, as not only are substitution ciphers the easiest to break, but also the similarities in the letters do make the cipher hard to read and easy to misread, and the detail in the diacritical marks makes it easy to draw the "A"s incorrectly or ambiguously, potentially leading to [[3003: Sandwich Helix|part of the message being lost]]. This was our experience in the comments section of this very article, where one person implemented translator functions alongside another person crafting a message that failed to translate. However, the logic behind the code is mostly visual similarity, and if attentive to connecting concepts between the American and scream cipher alphabet, it could be quickly learned and translated in a glance.

It's named "Scream Cipher" (as a pun on {{w|stream cipher}}s, commonly used in computing) because the written form of a scream is a long string of As, possibly with some other characters at the end (and often an exclamation point for emphasis), such as "Aaaaaah!" or "Aaaaaaagh!". The name may or may not be a reference to IBM's {{w|Scream_(cipher)|Scream cipher}} published in 2002.

In the comic, [[Cueball]] texts the ciphered version for the plaintext "HELLO", and [[Megan]] responds with that for "HI".

The title text deciphers to "AAAAAA A SCARY MONSTER AAAAAAA!"

You can translate text to and from Scream Cipher using [https://github.com/matthewpwatkins/scream-cipher/ the Scream Cipher Translator] or [https://github.com/Reginald-Gillespie/ScreamCipher an alternative] with additional features.

Another recent comic featuring all "A"s was [[2957: A Crossword Puzzle]].

==Worked example==



Say we want to encode "Scream" in the Scream Cipher. First we would need to split out word into the letters, so S, C, R, E, A, M.

The first letter is S, so if we go to S in the table S is shown to become to Ã, C similarly becomes A̧, R becomes Ȃ, E corresponds to Á, A is the main letter so A is unchanged to A, and M becomes Ǎ. If we then write them again in order, we find SCREAM becomes ÃA̧ȂÁAǍ.

To turn cipher text back into normal text, the process is repeated in reverse. To translate A̧ẢA̯A̰ÁȂ, we go to A̧ in the table and find A̧ becomes C. Ả similarly becomes I, A̯ becomes P, A̰ becomes H, Á becomes E, and Ȃ becomes R. If we write the letters in order, we see that A̧ẢA̯A̰ÁȂ becomes CIPHER.

==Table==

The {{w|Unicode}} names of the characters in the cipher are as follows:

{|class="wikitable"
! colspan=2 | Input !! colspan=3 | Substitution
|-
! Plain !! Unicode description !! Cipher !! Unicode description(s) !! Usage note
|-
| A || U+0041 LATIN CAPITAL LETTER A || A || '''U+0041 LATIN CAPITAL LETTER A || Unadorned base character
|-
| B || U+0042 LATIN CAPITAL LETTER B || Ȧ || '''U+0226 LATIN CAPITAL LETTER A WITH DOT ABOVE || Phonetic symbol for low central vowel
|-
| C || U+0043 LATIN CAPITAL LETTER C || A̧ || U+0041 LATIN CAPITAL LETTER A, '''U+0327 COMBINING CEDILLA''' || Cedille is often attached to a 'c', as in "français".
|-
| D || U+0044 LATIN CAPITAL LETTER D || A̱ || U+0041 LATIN CAPITAL LETTER A, '''U+0331 COMBINING MACRON BELOW''' ||
|-
| E || U+0045 LATIN CAPITAL LETTER E || Á || '''U+00C1 LATIN CAPITAL LETTER A WITH ACUTE || Many words have an acute e, as in "fiancé".
|-
| F || U+0046 LATIN CAPITAL LETTER F || A̮ || U+0041 LATIN CAPITAL LETTER A, '''U+032E COMBINING BREVE BELOW''' ||
|-
| G || U+0047 LATIN CAPITAL LETTER G || A̋ || U+0041 LATIN CAPITAL LETTER A, '''U+030B COMBINING DOUBLE ACUTE ACCENT''' ||
|-
| H || U+0048 LATIN CAPITAL LETTER H || A̰ || U+0041 LATIN CAPITAL LETTER A, '''U+0330 COMBINING TILDE BELOW''' ||
|-
| I || U+0049 LATIN CAPITAL LETTER I || Ả || '''U+1EA2 LATIN CAPITAL LETTER A WITH HOOK ABOVE ||
|-
| J || U+004A LATIN CAPITAL LETTER J || A̓ || U+0041 LATIN CAPITAL LETTER A, '''U+0313 COMBINING COMMA ABOVE''' || The comma symbol looks like a small letter 'J' in some fonts
|-
| K || U+004B LATIN CAPITAL LETTER K || Ạ || '''U+1EA0 LATIN CAPITAL LETTER A WITH DOT BELOW ||
|-
| L || U+004C LATIN CAPITAL LETTER L || Ă || '''U+0102 LATIN CAPITAL LETTER A WITH BREVE ||
|-
| M || U+004D LATIN CAPITAL LETTER M || Ǎ || '''U+01CD LATIN CAPITAL LETTER A WITH CARON ||
|-
| N || U+004E LATIN CAPITAL LETTER N || Â || '''U+00C2 LATIN CAPITAL LETTER A WITH CIRCUMFLEX || The letter 'n' looks like a circumflex in some fonts
|-
| O || U+004F LATIN CAPITAL LETTER O || Å || '''U+00C5 LATIN CAPITAL LETTER A WITH RING ABOVE || The symbol contains the letter 'O'. In Scandinavian languages like Swedish, this *is* the letter 'O' (a written 'O' may be closer to a 'U', but not always)
|-
| P || U+0050 LATIN CAPITAL LETTER P || A̯ || U+0041 LATIN CAPITAL LETTER A, '''U+032F COMBINING INVERTED BREVE BELOW''' ||
|-
| Q || U+0051 LATIN CAPITAL LETTER Q || A̤ || U+0041 LATIN CAPITAL LETTER A, '''U+0324 COMBINING DIAERESIS BELOW''' || In the Orthographies of Spanish, Catalan, French and Galician, the grapheme 'qu' normally represents a single sound, before vowels 'e' and 'i'. In the few exceptions where the 'u' is pronounced, a diaeresis is added to it.
|-
| R || U+0052 LATIN CAPITAL LETTER R || Ȃ || '''U+0202 LATIN CAPITAL LETTER A WITH INVERTED BREVE ||
|-
| S || U+0053 LATIN CAPITAL LETTER S || Ã || '''U+00C3 LATIN CAPITAL LETTER A WITH TILDE || Tilde looks like a sideways 'S'.
|-
| T || U+0054 LATIN CAPITAL LETTER T || Ā || '''U+0100 LATIN CAPITAL LETTER A WITH MACRON || The macron looks like the top horizontal line in the letter 'T'
|-
| U || U+0055 LATIN CAPITAL LETTER U || Ä || '''U+00C4 LATIN CAPITAL LETTER A WITH DIAERESIS || Many German words have a 'ü', as in "[[w|Fahrvergnügen]]"
|-
| V || U+0056 LATIN CAPITAL LETTER V || À || '''U+00C0 LATIN CAPITAL LETTER A WITH GRAVE || Grave has the letter 'V' in it
|-
| W || U+0057 LATIN CAPITAL LETTER W || Ȁ || '''U+0200 LATIN CAPITAL LETTER A WITH DOUBLE GRAVE || The letter 'W' is visually two copies of the letter 'V'
|-
| X || U+0058 LATIN CAPITAL LETTER X || A̽ || U+0041 LATIN CAPITAL LETTER A, '''U+033D COMBINING X ABOVE''' || The symbol contains the letter 'X'.
|-
| Y || U+0059 LATIN CAPITAL LETTER Y || A̦ || U+0041 LATIN CAPITAL LETTER A, '''U+0326 COMBINING COMMA BELOW''' || Comma is used con conjuntion as the letter 'Y' in some languages like Spanish
|-
| Z || U+005A LATIN CAPITAL LETTER Z || Ⱥ || '''U+023A LATIN CAPITAL LETTER A WITH STROKE || The strikethrough the letter A resembles the diagonal stroke of a capital "Z"
|}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Top of the panel has 26 letters of the alphabet, each followed by a hyphen and the letter "A" with a unique diacritical mark for each. "A - A" at the top is an exception, where the latter doesn't have a diacritic.]
:{|
|A - A
|-
|B - Ȧ
|G - A̋
|L - Ă
|Q - A̤
|V - À
|-
|C - A̧
|H - A̰
|M - Ǎ
|R - Ȃ
|W - Ȁ
|-
|D - A̱
|I - Ả
|N - Â
|S - Ã
|X - A̽
|-
|E - Á
|J - A̓
|O - Å
|T - Ā
|Y - A̦
|-
|F - A̮
|K - Ạ
|P - A̯
|U - Ä
|Z - Ⱥ
|}
:[Cueball and Megan typing on their phones, Cueball with two hands and Megan with one hand.]
:Cueball's phone: A̰ÁĂĂÅ
:Megan's phone: A̰Ả

:[Caption below the panel:]
:In the ''Scream Cipher'', messages consist of all As, with different letters distinguished using diacritics.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Language]]
[[Category:Cryptography]]
[[Category:Unicode]]

3054: Scream Cipher

2025-02-22T15:12:55Z

WKoA: Added link to earlier Scream Cipher implementation

{{comic
| number = 3054
| date = February 21, 2025
| title = Scream Cipher
| image = scream_cipher_2x.png
| imagesize = 287x416px
| noexpand = true
| titletext = AAAAAA A ÃA̧AȂA̦ ǍÅÂÃĀÁȂ AAAAAAA!
}}

==Explanation==
{{incomplete|Created by A ÃA̧ȂÁAǍẢÂA̋ ȦÅĀ - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
A {{w|Cipher}} is a method of encryption, where characters or sometimes words are substituted for other characters in a set pattern, allowing for arbitrary strings to be enciphered using it. The complexity and strength of ciphers varies, from {{w|one-time pads}} and (historically) {{w|enigma machine|Enigma}} as stronger and more complex, to {{w|substitution ciphers}} as some of the weakest and least complex, where each character is simply given a set different symbol to represent it in the cipher.

This comic uses a substitution cipher, where all the letters of the English Alphabet are represented using the letter "A", with different {{w|diacritical marks}} to define the differences. This kind of cipher is often used on a recreational basis by children or casual enthusiasts, the similarity of the letters increasing the obcurity of the content and the skill or technology required for use, but there is also significant impracticality, as not only are substitution ciphers the easiest to break, but also the similarities in the letters do make the cipher hard to read and easy to misread, and the detail in the diacritical marks makes it easy to draw the "A"s incorrectly or ambiguously, potentially leading to [[3003: Sandwich Helix|part of the message being lost]]. This was our experience in the comments section of this very article, where one person implemented translator functions alongside another person crafting a message that failed to translate. However, the logic behind the code is mostly visual similarity, and if attentive to connecting concepts between the American and scream cipher alphabet, it could be quickly learned and translated in a glance.

It's named "Scream Cipher" (as a pun on {{w|stream cipher}}s, commonly used in computing) because the written form of a scream is a long string of As, possibly with some other characters at the end (and often an exclamation point for emphasis), such as "Aaaaaah!" or "Aaaaaaagh!". The name may or may not be a reference to IBM's {{w|Scream_(cipher)|Scream cipher}} published in 2002.

In the comic, [[Cueball]] texts the ciphered version for the plaintext "HELLO", and [[Megan]] responds with that for "HI".

The title text deciphers to "AAAAAA A SCARY MONSTER AAAAAAA!"

You can translate text to and from Scream Cipher using [https://github.com/matthewpwatkins/scream-cipher/ the Scream Cipher Translator].
You can translate text to and from Scream Cipher using [https://github.com/matthewpwatkins/scream-cipher/ the Scream Cipher Translator] or [https://github.com/Reginald-Gillespie/ScreamCipher an alternative] with additional features.

Another recent comic featuring all "A"s was [[2957: A Crossword Puzzle]].

==Worked example==



Say we want to encode "Scream" in the Scream Cipher. First we would need to split out word into the letters, so S, C, R, E, A, M.

The first letter is S, so if we go to S in the table S is shown to become to Ã, C similarly becomes A̧, R becomes Ȃ, E corresponds to Á, A is the main letter so A is unchanged to A, and M becomes Ǎ. If we then write them again in order, we find SCREAM becomes ÃA̧ȂÁAǍ.

To turn cipher text back into normal text, the process is repeated in reverse. To translate A̧ẢA̯A̰ÁȂ, we go to A̧ in the table and find A̧ becomes C. Ả similarly becomes I, A̯ becomes P, A̰ becomes H, Á becomes E, and Ȃ becomes R. If we write the letters in order, we see that A̧ẢA̯A̰ÁȂ becomes CIPHER.

==Table==

The {{w|Unicode}} names of the characters in the cipher are as follows:

{|class="wikitable"
! colspan=2 | Input !! colspan=3 | Substitution
|-
! Plain !! Unicode description !! Cipher !! Unicode description(s) !! Usage note
|-
| A || U+0041 LATIN CAPITAL LETTER A || A || '''U+0041 LATIN CAPITAL LETTER A || Unadorned base character
|-
| B || U+0042 LATIN CAPITAL LETTER B || Ȧ || '''U+0226 LATIN CAPITAL LETTER A WITH DOT ABOVE || Phonetic symbol for low central vowel
|-
| C || U+0043 LATIN CAPITAL LETTER C || A̧ || U+0041 LATIN CAPITAL LETTER A, '''U+0327 COMBINING CEDILLA''' || Cedille is often attached to a 'c', as in "français".
|-
| D || U+0044 LATIN CAPITAL LETTER D || A̱ || U+0041 LATIN CAPITAL LETTER A, '''U+0331 COMBINING MACRON BELOW''' ||
|-
| E || U+0045 LATIN CAPITAL LETTER E || Á || '''U+00C1 LATIN CAPITAL LETTER A WITH ACUTE || Many words have an acute e, as in "fiancé".
|-
| F || U+0046 LATIN CAPITAL LETTER F || A̮ || U+0041 LATIN CAPITAL LETTER A, '''U+032E COMBINING BREVE BELOW''' ||
|-
| G || U+0047 LATIN CAPITAL LETTER G || A̋ || U+0041 LATIN CAPITAL LETTER A, '''U+030B COMBINING DOUBLE ACUTE ACCENT''' ||
|-
| H || U+0048 LATIN CAPITAL LETTER H || A̰ || U+0041 LATIN CAPITAL LETTER A, '''U+0330 COMBINING TILDE BELOW''' ||
|-
| I || U+0049 LATIN CAPITAL LETTER I || Ả || '''U+1EA2 LATIN CAPITAL LETTER A WITH HOOK ABOVE ||
|-
| J || U+004A LATIN CAPITAL LETTER J || A̓ || U+0041 LATIN CAPITAL LETTER A, '''U+0313 COMBINING COMMA ABOVE''' || The comma symbol looks like a small letter 'J' in some fonts
|-
| K || U+004B LATIN CAPITAL LETTER K || Ạ || '''U+1EA0 LATIN CAPITAL LETTER A WITH DOT BELOW ||
|-
| L || U+004C LATIN CAPITAL LETTER L || Ă || '''U+0102 LATIN CAPITAL LETTER A WITH BREVE ||
|-
| M || U+004D LATIN CAPITAL LETTER M || Ǎ || '''U+01CD LATIN CAPITAL LETTER A WITH CARON ||
|-
| N || U+004E LATIN CAPITAL LETTER N || Â || '''U+00C2 LATIN CAPITAL LETTER A WITH CIRCUMFLEX || The letter 'n' looks like a circumflex in some fonts
|-
| O || U+004F LATIN CAPITAL LETTER O || Å || '''U+00C5 LATIN CAPITAL LETTER A WITH RING ABOVE || The symbol contains the letter 'O'. In Scandinavian languages like Swedish, this *is* the letter 'O' (a written 'O' may be closer to a 'U', but not always)
|-
| P || U+0050 LATIN CAPITAL LETTER P || A̯ || U+0041 LATIN CAPITAL LETTER A, '''U+032F COMBINING INVERTED BREVE BELOW''' ||
|-
| Q || U+0051 LATIN CAPITAL LETTER Q || A̤ || U+0041 LATIN CAPITAL LETTER A, '''U+0324 COMBINING DIAERESIS BELOW''' || In the Orthographies of Spanish, Catalan, French and Galician, the grapheme 'qu' normally represents a single sound, before vowels 'e' and 'i'. In the few exceptions where the 'u' is pronounced, a diaeresis is added to it.
|-
| R || U+0052 LATIN CAPITAL LETTER R || Ȃ || '''U+0202 LATIN CAPITAL LETTER A WITH INVERTED BREVE ||
|-
| S || U+0053 LATIN CAPITAL LETTER S || Ã || '''U+00C3 LATIN CAPITAL LETTER A WITH TILDE || Tilde looks like a sideways 'S'.
|-
| T || U+0054 LATIN CAPITAL LETTER T || Ā || '''U+0100 LATIN CAPITAL LETTER A WITH MACRON || The macron looks like the top horizontal line in the letter 'T'
|-
| U || U+0055 LATIN CAPITAL LETTER U || Ä || '''U+00C4 LATIN CAPITAL LETTER A WITH DIAERESIS || Many German words have a 'ü', as in "[[w|Fahrvergnügen]]"
|-
| V || U+0056 LATIN CAPITAL LETTER V || À || '''U+00C0 LATIN CAPITAL LETTER A WITH GRAVE || Grave has the letter 'V' in it
|-
| W || U+0057 LATIN CAPITAL LETTER W || Ȁ || '''U+0200 LATIN CAPITAL LETTER A WITH DOUBLE GRAVE || The letter 'W' is visually two copies of the letter 'V'
|-
| X || U+0058 LATIN CAPITAL LETTER X || A̽ || U+0041 LATIN CAPITAL LETTER A, '''U+033D COMBINING X ABOVE''' || The symbol contains the letter 'X'.
|-
| Y || U+0059 LATIN CAPITAL LETTER Y || A̦ || U+0041 LATIN CAPITAL LETTER A, '''U+0326 COMBINING COMMA BELOW''' || Comma is used con conjuntion as the letter 'Y' in some languages like Spanish
|-
| Z || U+005A LATIN CAPITAL LETTER Z || Ⱥ || '''U+023A LATIN CAPITAL LETTER A WITH STROKE || The strikethrough the letter A resembles the diagonal stroke of a capital "Z"
|}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Top of the panel has 26 letters of the alphabet, each followed by a hyphen and the letter "A" with a unique diacritical mark for each. "A - A" at the top is an exception, where the latter doesn't have a diacritic.]
:{|
|A - A
|-
|B - Ȧ
|G - A̋
|L - Ă
|Q - A̤
|V - À
|-
|C - A̧
|H - A̰
|M - Ǎ
|R - Ȃ
|W - Ȁ
|-
|D - A̱
|I - Ả
|N - Â
|S - Ã
|X - A̽
|-
|E - Á
|J - A̓
|O - Å
|T - Ā
|Y - A̦
|-
|F - A̮
|K - Ạ
|P - A̯
|U - Ä
|Z - Ⱥ
|}
:[Cueball and Megan typing on their phones, Cueball with two hands and Megan with one hand.]
:Cueball's phone: A̰ÁĂĂÅ
:Megan's phone: A̰Ả

:[Caption below the panel:]
:In the ''Scream Cipher'', messages consist of all As, with different letters distinguished using diacritics.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Language]]
[[Category:Cryptography]]
[[Category:Unicode]]

Talk:3054: Scream Cipher

2025-02-22T00:19:29Z

WKoA: Ooooh that's how you comment. Apologies.

Anyone know a good free all-language OCR tool to help with the transcript? [[Special:Contributions/172.69.67.156|172.69.67.156]] 17:30, 21 February 2025 (UTC)
: Found one here: https://www.lexilogos.com/keyboard/diacritics.htm --mezimm [[Special:Contributions/172.68.2.70|172.68.2.70]] 17:52, 21 February 2025 (UTC)

The written cipher is very interesting, but where can I hear recordings of the spoken form? [[Special:Contributions/Rockymountain|Rockymountain]] 17:31, 21 February 2025 (UTC)
: [https://www.youtube.com/watch?v=eL4piuUn5nc Here ya go.] --mezimm [[Special:Contributions/172.68.35.117|172.68.35.117]] 17:54, 21 February 2025 (UTC)

Are Cueball and Megan millenials? Who else would text greetings when they're standing right next to each other? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:38, 21 February 2025 (UTC)
:They could be texting other people. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:37, 21 February 2025 (UTC)
:Engineers and cyberfolk were text messaging their neighbors rather than talking long before it was <s>cool</s> encouraged for social distancing or quarantine! It's always helpful to get a reminder not to do this. [[Special:Contributions/162.158.159.101|162.158.159.101]] 20:37, 21 February 2025 (UTC)
:They might not be diegetically in the same room. Comics can get weird with physical space. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 20:34, 21 February 2025 (UTC)

Likely a pun on "stream cipher"

- Related reference: https://en.wikipedia.org/wiki/Scream_(cipher) [[Special:Contributions/172.68.26.229|172.68.26.229]] 17:46, 21 February 2025 (UTC)

A̦ÅÄ ẠÂÅȀ, A̓A̅ ȀÅÄĂA̱ ȦÁ ÂÁAĂĂA̦ A̮ÄÂÂA̦ A̓A̮ ȀÁ A̱A̓A̱ A ÀÁÂÃA̓ÅÂ ÅA̮ A̅A̰A̓Ã A̭AA̋Á A̓Â A̅A̰A̓Ã ÃA̅A̦ĂÁ! --mezimm [[Special:Contributions/172.68.3.112|172.68.3.112]] 17:50, 21 February 2025 (UTC)

:The Wikifunction [https://www.wikifunctions.org/view/en/Z22728 from Scream] returns "YOU KNOW, JA̅ WOULD BE NEALLY FUNNY JF WE DJD A VENSJON OF A̅HJS A̭AGE JN A̅HJS SA̅YLE!". Hmmm... [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

::The page you link to came into existence 7 minutes after I had posted this comment ;) I was doing it all manually, using [https://www.lexilogos.com/keyboard/diacritics.htm this page] and best-guess attempts to interpret what Randall's handwritten diacritics were meant to correspond to. --mezimm [[Special:Contributions/172.68.1.158|172.68.1.158]] 19:55, 21 February 2025 (UTC)

::: updated version: "A̦ÅÄ ẠÂÅȀ, ẢĀ ȀÅÄĂA̱ ȦÁ ȂÁAĂĂA̦ A̮ÄÂÂA̦ ẢA̮ ȀÁ A̱ẢA̱ A ÀÁȂÃẢÅÂ ÅA̮ ĀA̰ẢÃ A̯AA̋Á ẢÂ ĀA̰ẢÃ ÃĀA̦ĂÁ!" --mezimm [[Special:Contributions/172.68.3.67|172.68.3.67]] 20:01, 21 February 2025 (UTC)

On Wikifunctions, we implemented the two functions [https://www.wikifunctions.org/view/en/Z22725 to Scream Cipher] and [https://www.wikifunctions.org/view/en/Z22728 from Scream Cipher] --[[Special:Contributions/172.70.38.235|172.70.38.235]] 18:09, 21 February 2025 (UTC)

:It looks like the wikifunctions are using a different character for "D" than [https://scream-cipher.netlify.app/ the github project] linked in the explanation. Seems as though one's using U+0331 and the other's using 0332. [[User:Schiffy|Schiffy]] ([[User_talk:Schiffy|Speak to me]]|[[Special:Contributions/Schiffy|What I've done]]) 20:32, 21 February 2025 (UTC)

Is there a logic behind the choices of the letter? I guess A̧ is for C because of the French ç and Å is pronounced like O in some Nordic languages. Also, is it A̱, A̲ or A̲ ? (or something else). [[Special:Contributions/172.71.126.50|172.71.126.50]] 18:10, 21 February 2025 (UTC)
: Seems to be mostly visual similarity. Å has an actual O shape added to it. [[Special:Contributions/172.70.110.171|172.70.110.171]] 20:19, 21 February 2025 (UTC)

I give it a week for people to make a translator to and from this cipher. [[User:CalibansCreations|'''Caliban''']] ([[User talk:CalibansCreations|talk]]) 18:20, 21 February 2025 (UTC)

- The Wikifunctions translations above were complete at least 11 minutes ''before'' your comment and well within the goal of one week :-) . [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

Numbers should be variations of h and/or g. [[User:Andyd273|Andyd273]] ([[User talk:Andyd273|talk]]) 18:32, 21 February 2025 (UTC)#
:H > g [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)

Using ''sed'' you can encode with <code>sed 's/C/A̧/g;s/D/A̱/g;s/F/A̮/g;s/G/A̋/g;s/H/A̰/g;s/J/A̓/g;s/P/A̯/g;s/Q/A̤/g;s/X/A̽/g;s/Y/A̦/g;y/BEIKLMNORSTUVWZ/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/'</code> and decode with <code>sed 's/A̧/C/g;s/A̱/D/g;s/A̮/F/g;s/A̋/G/g;s/A̰/H/g;s/A̓/J/g;s/A̯/P/g;s/A̤/Q/g;s/A̽/X/g;s/A̦/Y/g;y/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/BEIKLMNORSTUVWZ/'</code>. [[Special:Contributions/162.158.159.102|162.158.159.102]] 18:41, 21 February 2025 (UTC)

It would be really funny if someone added an image of Bill Cipher screaming, with the tag "A screaming cipher". It wouldn't reall fit but it'd be funny [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)
:[[File:Screamingcipher.png]] I did. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:57, 21 February 2025 (UTC) (EDIT: WOW, that thing is MASSIVE! Can someone please downscale it because I have no idea how. You have permission to edit my comment '''''only for that.''''') (DOUBLE EDIT: Nevermind, I did it.)
Someone started a GitHub repo with a web-based encoded/decoder already: https://github.com/Reginald-Gillespie/StreamCipher [[User:Dlech|Dlech]] ([[User talk:Dlech|talk]]) 19:35, 21 February 2025 (UTC)

I'd almost want to edit in my repo instead of the current one because mine is objectively better, but I'm new to this and not sure if that's appropriate or not =P (I don't even know if I am commenting correctly) [[User:WKoA|WKoA]] ([[User talk:WKoA|talk]])

I know you can decode a substitution cipher by counting letters and replacing common ones like 'E' and then filling in the rest by inspection, but what kinds of automated approaches are there? [[Special:Contributions/162.158.159.105|162.158.159.105]] 20:14, 21 February 2025 (UTC)

'''HEADS UP:''' I just changed A̲ (0332 COMBINING LOW LINE) to A̱ (0331 COMBINING MACRON BELOW) as encoding for "D" in the table and the transcript. Rationale: "T" is written with macron, so it's only logical to encode "D" likewise. A "low line" is longer than a macron, and looking at Randall's comic, the line below the "D" is definitely not longer than the one above "T". It would also make no sense to encode "T" with a "combining low line" as well when a single, uncombined character exists. [[Special:Contributions/172.70.114.123|172.70.114.123]] 20:29, 21 February 2025 (UTC)

Talk:3054: Scream Cipher

2025-02-22T00:17:38Z

WKoA: I think that's how you're supposed to do comments?

Anyone know a good free all-language OCR tool to help with the transcript? [[Special:Contributions/172.69.67.156|172.69.67.156]] 17:30, 21 February 2025 (UTC)
: Found one here: https://www.lexilogos.com/keyboard/diacritics.htm --mezimm [[Special:Contributions/172.68.2.70|172.68.2.70]] 17:52, 21 February 2025 (UTC)

The written cipher is very interesting, but where can I hear recordings of the spoken form? [[Special:Contributions/Rockymountain|Rockymountain]] 17:31, 21 February 2025 (UTC)
: [https://www.youtube.com/watch?v=eL4piuUn5nc Here ya go.] --mezimm [[Special:Contributions/172.68.35.117|172.68.35.117]] 17:54, 21 February 2025 (UTC)

Are Cueball and Megan millenials? Who else would text greetings when they're standing right next to each other? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:38, 21 February 2025 (UTC)
:They could be texting other people. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:37, 21 February 2025 (UTC)
:Engineers and cyberfolk were text messaging their neighbors rather than talking long before it was <s>cool</s> encouraged for social distancing or quarantine! It's always helpful to get a reminder not to do this. [[Special:Contributions/162.158.159.101|162.158.159.101]] 20:37, 21 February 2025 (UTC)
:They might not be diegetically in the same room. Comics can get weird with physical space. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 20:34, 21 February 2025 (UTC)

Likely a pun on "stream cipher"

- Related reference: https://en.wikipedia.org/wiki/Scream_(cipher) [[Special:Contributions/172.68.26.229|172.68.26.229]] 17:46, 21 February 2025 (UTC)

A̦ÅÄ ẠÂÅȀ, A̓A̅ ȀÅÄĂA̱ ȦÁ ÂÁAĂĂA̦ A̮ÄÂÂA̦ A̓A̮ ȀÁ A̱A̓A̱ A ÀÁÂÃA̓ÅÂ ÅA̮ A̅A̰A̓Ã A̭AA̋Á A̓Â A̅A̰A̓Ã ÃA̅A̦ĂÁ! --mezimm [[Special:Contributions/172.68.3.112|172.68.3.112]] 17:50, 21 February 2025 (UTC)

:The Wikifunction [https://www.wikifunctions.org/view/en/Z22728 from Scream] returns "YOU KNOW, JA̅ WOULD BE NEALLY FUNNY JF WE DJD A VENSJON OF A̅HJS A̭AGE JN A̅HJS SA̅YLE!". Hmmm... [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

::The page you link to came into existence 7 minutes after I had posted this comment ;) I was doing it all manually, using [https://www.lexilogos.com/keyboard/diacritics.htm this page] and best-guess attempts to interpret what Randall's handwritten diacritics were meant to correspond to. --mezimm [[Special:Contributions/172.68.1.158|172.68.1.158]] 19:55, 21 February 2025 (UTC)

::: updated version: "A̦ÅÄ ẠÂÅȀ, ẢĀ ȀÅÄĂA̱ ȦÁ ȂÁAĂĂA̦ A̮ÄÂÂA̦ ẢA̮ ȀÁ A̱ẢA̱ A ÀÁȂÃẢÅÂ ÅA̮ ĀA̰ẢÃ A̯AA̋Á ẢÂ ĀA̰ẢÃ ÃĀA̦ĂÁ!" --mezimm [[Special:Contributions/172.68.3.67|172.68.3.67]] 20:01, 21 February 2025 (UTC)

On Wikifunctions, we implemented the two functions [https://www.wikifunctions.org/view/en/Z22725 to Scream Cipher] and [https://www.wikifunctions.org/view/en/Z22728 from Scream Cipher] --[[Special:Contributions/172.70.38.235|172.70.38.235]] 18:09, 21 February 2025 (UTC)

:It looks like the wikifunctions are using a different character for "D" than [https://scream-cipher.netlify.app/ the github project] linked in the explanation. Seems as though one's using U+0331 and the other's using 0332. [[User:Schiffy|Schiffy]] ([[User_talk:Schiffy|Speak to me]]|[[Special:Contributions/Schiffy|What I've done]]) 20:32, 21 February 2025 (UTC)

Is there a logic behind the choices of the letter? I guess A̧ is for C because of the French ç and Å is pronounced like O in some Nordic languages. Also, is it A̱, A̲ or A̲ ? (or something else). [[Special:Contributions/172.71.126.50|172.71.126.50]] 18:10, 21 February 2025 (UTC)
: Seems to be mostly visual similarity. Å has an actual O shape added to it. [[Special:Contributions/172.70.110.171|172.70.110.171]] 20:19, 21 February 2025 (UTC)

I give it a week for people to make a translator to and from this cipher. [[User:CalibansCreations|'''Caliban''']] ([[User talk:CalibansCreations|talk]]) 18:20, 21 February 2025 (UTC)

- The Wikifunctions translations above were complete at least 11 minutes ''before'' your comment and well within the goal of one week :-) . [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

Numbers should be variations of h and/or g. [[User:Andyd273|Andyd273]] ([[User talk:Andyd273|talk]]) 18:32, 21 February 2025 (UTC)#
:H > g [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)

Using ''sed'' you can encode with <code>sed 's/C/A̧/g;s/D/A̱/g;s/F/A̮/g;s/G/A̋/g;s/H/A̰/g;s/J/A̓/g;s/P/A̯/g;s/Q/A̤/g;s/X/A̽/g;s/Y/A̦/g;y/BEIKLMNORSTUVWZ/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/'</code> and decode with <code>sed 's/A̧/C/g;s/A̱/D/g;s/A̮/F/g;s/A̋/G/g;s/A̰/H/g;s/A̓/J/g;s/A̯/P/g;s/A̤/Q/g;s/A̽/X/g;s/A̦/Y/g;y/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/BEIKLMNORSTUVWZ/'</code>. [[Special:Contributions/162.158.159.102|162.158.159.102]] 18:41, 21 February 2025 (UTC)

It would be really funny if someone added an image of Bill Cipher screaming, with the tag "A screaming cipher". It wouldn't reall fit but it'd be funny [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)
:[[File:Screamingcipher.png]] I did. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:57, 21 February 2025 (UTC) (EDIT: WOW, that thing is MASSIVE! Can someone please downscale it because I have no idea how. You have permission to edit my comment '''''only for that.''''') (DOUBLE EDIT: Nevermind, I did it.)
Someone started a GitHub repo with a web-based encoded/decoder already: https://github.com/Reginald-Gillespie/StreamCipher [[User:Dlech|Dlech]] ([[User talk:Dlech|talk]]) 19:35, 21 February 2025 (UTC)

I'd almost want to edit in my repo instead of the current one because mine is objectively better, but I'm new to this and not sure if that's appropriate or not =P (I don't even know if I am commenting correctly) [[User:WKoA|WKoA]] ([[User WKoA:WKoA|WKoA]]) 00:13, 22 February 2025 (UTC)[[User:WKoA|WKoA]] ([[User talk:WKoA|talk]]) 00:17, 22 February 2025 (UTC)

I know you can decode a substitution cipher by counting letters and replacing common ones like 'E' and then filling in the rest by inspection, but what kinds of automated approaches are there? [[Special:Contributions/162.158.159.105|162.158.159.105]] 20:14, 21 February 2025 (UTC)

'''HEADS UP:''' I just changed A̲ (0332 COMBINING LOW LINE) to A̱ (0331 COMBINING MACRON BELOW) as encoding for "D" in the table and the transcript. Rationale: "T" is written with macron, so it's only logical to encode "D" likewise. A "low line" is longer than a macron, and looking at Randall's comic, the line below the "D" is definitely not longer than the one above "T". It would also make no sense to encode "T" with a "combining low line" as well when a single, uncombined character exists. [[Special:Contributions/172.70.114.123|172.70.114.123]] 20:29, 21 February 2025 (UTC)

Talk:3054: Scream Cipher

2025-02-22T00:15:04Z

WKoA: Adding a comment... I think?

Anyone know a good free all-language OCR tool to help with the transcript? [[Special:Contributions/172.69.67.156|172.69.67.156]] 17:30, 21 February 2025 (UTC)
: Found one here: https://www.lexilogos.com/keyboard/diacritics.htm --mezimm [[Special:Contributions/172.68.2.70|172.68.2.70]] 17:52, 21 February 2025 (UTC)

The written cipher is very interesting, but where can I hear recordings of the spoken form? [[Special:Contributions/Rockymountain|Rockymountain]] 17:31, 21 February 2025 (UTC)
: [https://www.youtube.com/watch?v=eL4piuUn5nc Here ya go.] --mezimm [[Special:Contributions/172.68.35.117|172.68.35.117]] 17:54, 21 February 2025 (UTC)

Are Cueball and Megan millenials? Who else would text greetings when they're standing right next to each other? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:38, 21 February 2025 (UTC)
:They could be texting other people. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:37, 21 February 2025 (UTC)
:Engineers and cyberfolk were text messaging their neighbors rather than talking long before it was <s>cool</s> encouraged for social distancing or quarantine! It's always helpful to get a reminder not to do this. [[Special:Contributions/162.158.159.101|162.158.159.101]] 20:37, 21 February 2025 (UTC)
:They might not be diegetically in the same room. Comics can get weird with physical space. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 20:34, 21 February 2025 (UTC)

Likely a pun on "stream cipher"

- Related reference: https://en.wikipedia.org/wiki/Scream_(cipher) [[Special:Contributions/172.68.26.229|172.68.26.229]] 17:46, 21 February 2025 (UTC)

A̦ÅÄ ẠÂÅȀ, A̓A̅ ȀÅÄĂA̱ ȦÁ ÂÁAĂĂA̦ A̮ÄÂÂA̦ A̓A̮ ȀÁ A̱A̓A̱ A ÀÁÂÃA̓ÅÂ ÅA̮ A̅A̰A̓Ã A̭AA̋Á A̓Â A̅A̰A̓Ã ÃA̅A̦ĂÁ! --mezimm [[Special:Contributions/172.68.3.112|172.68.3.112]] 17:50, 21 February 2025 (UTC)

:The Wikifunction [https://www.wikifunctions.org/view/en/Z22728 from Scream] returns "YOU KNOW, JA̅ WOULD BE NEALLY FUNNY JF WE DJD A VENSJON OF A̅HJS A̭AGE JN A̅HJS SA̅YLE!". Hmmm... [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

::The page you link to came into existence 7 minutes after I had posted this comment ;) I was doing it all manually, using [https://www.lexilogos.com/keyboard/diacritics.htm this page] and best-guess attempts to interpret what Randall's handwritten diacritics were meant to correspond to. --mezimm [[Special:Contributions/172.68.1.158|172.68.1.158]] 19:55, 21 February 2025 (UTC)

::: updated version: "A̦ÅÄ ẠÂÅȀ, ẢĀ ȀÅÄĂA̱ ȦÁ ȂÁAĂĂA̦ A̮ÄÂÂA̦ ẢA̮ ȀÁ A̱ẢA̱ A ÀÁȂÃẢÅÂ ÅA̮ ĀA̰ẢÃ A̯AA̋Á ẢÂ ĀA̰ẢÃ ÃĀA̦ĂÁ!" --mezimm [[Special:Contributions/172.68.3.67|172.68.3.67]] 20:01, 21 February 2025 (UTC)

On Wikifunctions, we implemented the two functions [https://www.wikifunctions.org/view/en/Z22725 to Scream Cipher] and [https://www.wikifunctions.org/view/en/Z22728 from Scream Cipher] --[[Special:Contributions/172.70.38.235|172.70.38.235]] 18:09, 21 February 2025 (UTC)

:It looks like the wikifunctions are using a different character for "D" than [https://scream-cipher.netlify.app/ the github project] linked in the explanation. Seems as though one's using U+0331 and the other's using 0332. [[User:Schiffy|Schiffy]] ([[User_talk:Schiffy|Speak to me]]|[[Special:Contributions/Schiffy|What I've done]]) 20:32, 21 February 2025 (UTC)

Is there a logic behind the choices of the letter? I guess A̧ is for C because of the French ç and Å is pronounced like O in some Nordic languages. Also, is it A̱, A̲ or A̲ ? (or something else). [[Special:Contributions/172.71.126.50|172.71.126.50]] 18:10, 21 February 2025 (UTC)
: Seems to be mostly visual similarity. Å has an actual O shape added to it. [[Special:Contributions/172.70.110.171|172.70.110.171]] 20:19, 21 February 2025 (UTC)

I give it a week for people to make a translator to and from this cipher. [[User:CalibansCreations|'''Caliban''']] ([[User talk:CalibansCreations|talk]]) 18:20, 21 February 2025 (UTC)

- The Wikifunctions translations above were complete at least 11 minutes ''before'' your comment and well within the goal of one week :-) . [[User:Mwarren|Mwarren]] ([[User talk:Mwarren|talk]]) 19:04, 21 February 2025 (UTC)

Numbers should be variations of h and/or g. [[User:Andyd273|Andyd273]] ([[User talk:Andyd273|talk]]) 18:32, 21 February 2025 (UTC)#
:H > g [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)

Using ''sed'' you can encode with <code>sed 's/C/A̧/g;s/D/A̱/g;s/F/A̮/g;s/G/A̋/g;s/H/A̰/g;s/J/A̓/g;s/P/A̯/g;s/Q/A̤/g;s/X/A̽/g;s/Y/A̦/g;y/BEIKLMNORSTUVWZ/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/'</code> and decode with <code>sed 's/A̧/C/g;s/A̱/D/g;s/A̮/F/g;s/A̋/G/g;s/A̰/H/g;s/A̓/J/g;s/A̯/P/g;s/A̤/Q/g;s/A̽/X/g;s/A̦/Y/g;y/ȦÁẢẠĂǍÂÅȂÃĀÄÀȀȺ/BEIKLMNORSTUVWZ/'</code>. [[Special:Contributions/162.158.159.102|162.158.159.102]] 18:41, 21 February 2025 (UTC)

It would be really funny if someone added an image of Bill Cipher screaming, with the tag "A screaming cipher". It wouldn't reall fit but it'd be funny [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 18:59, 21 February 2025 (UTC)
:[[File:Screamingcipher.png]] I did. [[User:B_for_brain|B for brain]] ([[User_talk:B_for_brain|talk]]) ([https://www.youtube.com/@bforbrain youtube channel] [https://bforbrain.weebly.com/ wobsite (supposed to be a blag)]) 19:57, 21 February 2025 (UTC) (EDIT: WOW, that thing is MASSIVE! Can someone please downscale it because I have no idea how. You have permission to edit my comment '''''only for that.''''') (DOUBLE EDIT: Nevermind, I did it.)
Someone started a GitHub repo with a web-based encoded/decoder already: https://github.com/Reginald-Gillespie/StreamCipher [[User:Dlech|Dlech]] ([[User talk:Dlech|talk]]) 19:35, 21 February 2025 (UTC)
I'd almost want to edit in my repo instead of the current one because mine is objectively better, but I'm new to this and not sure if that's appropriate or not =P (I don't even know if I am commenting correctly) [[User:WKoA|WKoA]] ([[User WKoA:WKoA|WKoA]]) 00:13, 22 February 2025 (UTC)

I know you can decode a substitution cipher by counting letters and replacing common ones like 'E' and then filling in the rest by inspection, but what kinds of automated approaches are there? [[Special:Contributions/162.158.159.105|162.158.159.105]] 20:14, 21 February 2025 (UTC)

'''HEADS UP:''' I just changed A̲ (0332 COMBINING LOW LINE) to A̱ (0331 COMBINING MACRON BELOW) as encoding for "D" in the table and the transcript. Rationale: "T" is written with macron, so it's only logical to encode "D" likewise. A "low line" is longer than a macron, and looking at Randall's comic, the line below the "D" is definitely not longer than the one above "T". It would also make no sense to encode "T" with a "combining low line" as well when a single, uncombined character exists. [[Special:Contributions/172.70.114.123|172.70.114.123]] 20:29, 21 February 2025 (UTC)