List of Special Characters for Passwords

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This is list of which of the list of Unicode characters can be used to meet the requirement or option of special characters for user passwords. Every system has its own requirements and limitations; this article refers to the general class of characters that are easily accessible to most users.

Character reference overview

An HTML or XML numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format

&#nnnn;

or

&#xhhhh;

where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. The x must be lowercase in XML documents. The nnnn or hhhh may be any number of digits and may include leading zeros. The hhhh may mix uppercase and lowercase, though uppercase is the usual style.

In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). The format is the same as for any entity reference:

&name;

where name is the case-sensitive name of the entity. The semicolon is required.

Table of Special Characters

These characters are part of the Basic Latin (Unicode block). There are 33 characters classified as ASCII Punctuation & Symbols are also sometimes referred to as ASCII special characters. The table has columns for many of the most common password system solutions.

Description Glyph Code Decimal Octal # Google/Gmail Microsoft Windows
Space   U+0020 32 040 0001 No No
Exclamation mark ! U+0021 33 041 0002 Yes Yes
Quotation mark " U+0022 34 042 0003
Number sign # U+0023 35 043 0004
Dollar sign $ U+0024 36 044 0005
Percent sign % U+0025 37 045 0006
Ampersand & U+0026 38 046 0007
Apostrophe ' U+0027 39 047 0008
Left parenthesis ( U+0028 40 050 0009
Right parenthesis ) U+0029 41 051 0010
Asterisk * U+002A 42 052 0011
Plus sign + U+002B 43 053 0012
Comma , U+002C 44 054 0013
Hyphen-minus - U+002D 45 055 0014
Full stop . U+002E 46 056 0015
Slash (Solidus) / U+002F 47 057 0016
Colon : U+003A 58 072 0027
Semicolon ; U+003B 59 073 0028
Less-than sign < U+003C 60 074 0029
Equal sign = U+003D 61 075 0030
Greater-than sign > U+003E 62 076 0031
Question mark ? U+003F 63 077 0032
At sign @ U+0040 64 0100 0033
Left Square Bracket [ U+005B 91 0133 0060
Backslash \ U+005C 92 0134 0061
Right Square Bracket ] U+005D 93 0135 0062
Circumflex accent ^ U+005E 94 0136 0063
Low line _ U+005F 95 0137 0064
Grave accent ' U+0060 96 0140 0065
Left Curly Bracket { U+007B 123 0173 0092
Vertical bar | U+007C 124 0174 0093
Right Curly Bracket } U+007D 125 0175 0094
Tilde ~ U+007E 126 0176 0095
Description Glyph Code Decimal Octal #

See also

References

External links