Something better than Base64, Strange \n in base64 encoded string in Ruby. Here we use \W which remove everything that is not a word character. Ready to optimize your JavaScript with Rust? To learn more, see our tips on writing great answers. Replacing special characters. CGAC2022 Day 10: Help Santa sort presents! How do I tell if this single climbing rope is still safe for use? Why is the federal judiciary of the United States divided into circuits? If you have no alternative suitable "funny" characters to choose from (perhaps all the other characters are invalid leaving only the 62 alphanumeric characters to choose from), you can always use an escape character for a very slight (~3/64?) To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A word character is a character from a-z, A-Z, 0-9, including the _ (underscore) character. How can I convert a stack trace to a string? Use 000 to mean 0. . Not sure if it was just me or something she sent to the whole team, Cooking roast potatoes with a slow cooked roast. This conforms to rfc 4648 so should be widely understandable. To encode and decode a string with base64, we can read this tutorial. Usually UTF-8 or UTF-16 will do. Adding any special characters to the above regex will skip that character. rev2022.12.9.43105. Where does the idea of selling dragon parts come from? The method creates and returns a new string with new characters or strings. 10. The encoding is unable to handle the special characters (ex. You could use base32 instead to be a bit more efficient, but that's likely to be significantly more work, unless you can find a library which supports it out of the box. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Making statements based on opinion; back them up with references or personal experience. ), There are a number of variations of base64, some of which don't use padding. If your strings have to be strictly alphanumeric, then you'll need to use hex encoding (one byte becomes 2 hex digits), or roll your own encoding scheme. Thanks but does not help me unfortunately. gist.github.com/dotnetchris/8e99ef70a6fcb3bd445ef1f3505f7087, en.wikipedia.org/wiki/Base64#Variants_summary_table. did anything serious ever run on the speccy? Cooking roast potatoes with a slow cooked roast. The message gets encoded but the special character is converted to some junk value. Although this argument is technically optional, you are highly encouraged to specify the correct value for your code if the default_charset configuration option may be set incorrectly for the given input. See the previous char and replace with < or >. RFC 4648 Base-N Encodings October 2006 A 65-character subset of US-ASCII is used, enabling 6 bits to be represented per printable character. Why did the Council of Elrond debate hiding or sending the Ring away, if Sauron wins eventually in that scenario? Not the answer you're looking for? Should I give a brutally honest feedback on course evaluations? Making statements based on opinion; back them up with references or personal experience. "Any phrase" -> "Any-phrase". I have an original Text, that I send using outlook. What are the criteria for a protest to be a strong incentivizing factor for policy change in China? If you want to use python to do this, you can refer to this tutorial. Ready to optimize your JavaScript with Rust? Asking for help, clarification, or responding to other answers. This function is case-sensitive. They are not safe to url. Connect and share knowledge within a single location that is structured and easy to search. Now we will replace the special character in the string with an underscore, so click on the Add an action then select Set variable action, then select the variable name 'replace special character', and in values write the below expression: replace (variables ('stringwithspecialcharacter'),item (),'_') Microsoft Flow replace all special characters First 128 characters in the table above is also known as the "7-bit ASCII table", since it was developed in 1963, when one byte was 7 bits long. How to say "patience" in latin in the modern sense of "virtue of waiting or being able to wait"? How to set a newcommand to be incompressible by justification? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. replace all occurrences of a character in a string java. Did neanderthals need vitamin C from the diet? (Libraries to perform hex encoding are very common. If you want alphanumeric, I think it is better and is practical to use base 36. (Does yours match one of those?). How hard is . Would salt mines, lakes or flats be reasonably found in high, snowy elevations? The simplest option would be to encode the text to binary using UTF-8, and then convert the binary back to text as hex (two characters per byte). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In the Flow name field, enter a name for your flow. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Or, better yet, as Mr. Skeet points out, find an existing library with enough flexibility. Find centralized, trusted content and collaborate around the technologies you use most. Is there any reason on passenger airliners not to have a physical lock between throttles? How do I use Base64 and exclude special characters +/= from string? Regular Expression to find special characters in string. Java string replace. ), The Wikipedia page on base64 goes into the details, including the "standard" variations used for a number of common use-cases. This works pretty well but we get an extra underscore character _.The diacritics on the c is conserved. The length of this string must correspond to the length of FromCharacters. There is a very good regular expression to replace characters that are not common letters or numbers, but this expression also removes accents. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Basically, you just need 65 ASCII characters which are acceptable - preferably in addition to line breaks. Any character that matches this pattern is replaced by String.Empty, which is the string defined by the replacement pattern. Like @JeremyP said. the problem with base64 as I understand it is that it includes + / and = which are characters I can not tolerate in my application. In python, we can use base64 to encode a string and transfer it. Making statements based on opinion; back them up with references or personal experience. The problem is that you encoded a UTF-8 encoded string into Base64. Why does the USA not have a constitutional court? How do I remove these and still make sure that my decode works in the future? How to save a PNG image server-side, from a base64 data URI. From now on, you don't need to download any software for such simple tasks. Find centralized, trusted content and collaborate around the technologies you use most. If it's just those particular characters that bother you, and you can find some other characters to use instead, then how about implementing your own custom base64 module? An optional argument defining the encoding used when converting characters. It is unclear if the Base58Check encoding method will formalise across current protocols. Thanks for contributing an answer to Stack Overflow! Creating a BLOB from a Base64 string in JavaScript, Received a 'behavior reminder' from manager. Microsoft Flow Array VariableIn this video, I go through the Append to An Array Action in Power Automate, previously known as Microsoft Flow. String.Replace () method has two overloaded forms. Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? Yea, but I'm not sure that's an assumption you'd want to makeUnless he KNOW for sure his data length will, @BairDev correct, the padding is not counted in base64. The Bitcoin Address Utility is an implementation example; geared for Bitcoins. I've wanted an encoding like this for half a decade, i wish i was aware of it sooner. Consider some other variants: base64 Variant table from Wikipedia. MOSFET is getting very hot at high frequency PWM. How do I encode and decode a base64 string? The Bitcoin Address Utility is an implementation example; geared for Bitcoins. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Each character has its own unique code, binary value, symbol, name, and description. Ready to optimize your JavaScript with Rust? Ruby has built-in encoding/decoding up to base 36 (26 letters and 10 numbers). I need to replace the characters for my full flow to work Message 3 of 10 30,297 Views 0 Kudos Reply. Assuming no padding (normally =) is required, only two non-alphanumeric characters are needed. 3 Answers Sorted by: 5 Rather than invent something new, I'd use Base64.urlsafe_encode64 (and its counterpart Base64.urlsafe_decode64) which is basically base64 with + and / replaced with - and _. So, decoding the Base64 gives you back the original UTF-8 sequence of bytes. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Try converting the byte array to Base64 [ ^] - that will contain only "readable" characters. How can non-ASCII characters be removed from a string? It's also very possible that changing a pixel will cause additions or subtractions to parts of the header info. In C#, Strings are immutable. It's not all that difficult. Essentially I want alphanumeric to be used. base64 decode - problem with special characters Patrick Hi. For instance, 0 (A) would be encoded as "AA", 62 (+) would be encoded as "AB" and 63 (/) would be encoded as "AC". When you are using base64 to encode a string, there are +, / and = characters in encoding result. Below is the UDF code being used: BASE64Encoder encoder = new BASE64Encoder (); String encoded = encoder.encode (payload.getBytes ()); If you truly can only use alphanumerical characters you will have to come up with an escaping scheme that uses one of those chars for example, use 0 as the escape, and then encode the special char as a 2 char hex encoding of the ascii. It won't be terribly efficient, but it will just be alphanumeric. If omitted, encoding defaults to the value of the default_charset configuration option. As Ciaran says, base64 isn't terribly hard to implement - but you may want to have a look for existing libraries which allow you to specify a custom set of characters to use. Why is Singapore considered to be a dictatorial regime and a multi-party democracy at the same time? Are defenders behind an arrow slit attackable? Base64 encoded string represents the initial string containing special characters in some charset, suitable for such special characters. This could be adapted to handle lower bases, but it may be sufficient as is. How can you encode a string to Base64 in JavaScript? A Simple Guide to Python Base64 Encode String for Beginners - Python Tutorial However, the basic base64 function is not safe, as to function: base64.b64encode(s, altchars=None) This function can encode a string with base64, however, the result contains some characters, such as +, / and =. 1980s short story - disease of self absorption, MOSFET is getting very hot at high frequency PWM. The input is not a valid Base-64 string as it contains a non-base 64 character, Using Javascript's atob to decode base64 doesn't properly decode utf-8 strings. How to use a VPN to access a Russian website that is banned in the EU? java string swap two characters. Thanks for contributing an answer to Stack Overflow! The htmlspecialchars_decode () function converts some predefined HTML entities to characters. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, How to generate a random alpha-numeric string. rev2022.12.9.43105. What is the real purpose of Base64 encoding? characters of Spanish language). base64 encoding that doesn't use "+/=" (plus or equals) characters? HTML entities that will be decoded are: & becomes & (ampersand) " becomes " (double quote) ' becomes ' (single quote) < becomes < (less than) > becomes > (greater than) The htmlspecialchars_decode () function is the opposite of . I guess the issue you encountered is cased by ASCII. How is this the accepted answer, it doesn't offer any solution. Is this an at-all realistic configuration for a DHC-2 Beaver? How to set a newcommand to be incompressible by justification? I have a string which contains special character. How to encode a string to replace all special characters. Actually works fine once I grabbed this from MDN to replace the window.atob / this.decode() method // https://devel. How to improve base64 encode and decode string to avoid +, / and =? How can I convert an image into Base64 string using JavaScript? Does balls to the wall mean full speed ahead or full speed ahead and nosedive? Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Binary Data in JSON String. Pick your replacements. The feature may be used to provide fast access to a broader selection of Unicode letters typically not accessible from the keyboard, like umlauts or other diacritics. Are the S&P 500 and Dow Jones Industrial Average securities? Second, Base64 is not an encoding algorithm - it's a translation algorithm which "spreads" the value of bytes across multiple output characters: so a change in a pixel value can alter several values in the output. Not sure if it was just me or something she sent to the whole team. Add a new light switch in line with another switch? I'm pretty sure there are plenty out there, but you haven't specified which platform you need this for. How do I read / convert an InputStream into a String in Java? // This will remove all special characters except space. This conforms to rfc 4648 so should be widely understandable Share Improve this answer Follow edited Jun 16, 2013 at 10:17 answered Jan 9, 2013 at 18:29 Base64 encode your data without hassles or decode it into a human-readable format. how to replace a character with another character in a string in java. RobElliott. To learn more, see our tips on writing great answers. Your stated requirements are rather unusual Commons codec has a url safe version of base64, which emits - and _ instead of + and / characters, http://commons.apache.org/codec/apidocs/org/apache/commons/codec/binary/Base64.html#encodeBase64URLSafe(byte[]). This will search for the (") character (to enter a double quote in a string you need to "double it"), and replace it with another one. var cleaned = stringToReplace.replace (/ [^\w\s]/gm, '') Adding any special characters to the above regex will skip that character. To learn more, see our tips on writing great answers. Now you have a valid document in a string and you can parse with XDocument.Parse (<the string>) Friday, April 16, 2010 10:14 AM. Delete Specials Caractres from a String in java. 1 Regex.Replace(your String, @" [^0-9a-zA-Z]+", "") Add a Grepper Answer C# queries related to "regex for replacing special characters" regex remove special characters regex to replace special characters regex name without numbers and special characters regex replace all characters regex to restrict special characters except space and . Spring Boot - Validations stopped working after upgrade from 2.2.5 to 2.3.0. Hence, is the 8-bit version of the two-byte UTF-8 sequence for (0xC3 and 0xB9). Create Url For Audio FileCreate Url For Video File will sometimes glitch and take you a long time to try different solutions. Another quite recurrent use case is the need to clear the accents and then replace special characters with some other one, e.g. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Why does the USA not have a constitutional court? In this tutorial, we will introduce how to replace +, / and = characters by encoding string with php base64. What are the criteria for a protest to be a strong incentivizing factor for policy change in China? If you see the "cross", you're on the right track. Here \w : A word character, short for [a-zA-Z_0-9] \W : A non-word character. How to capitalize the first character of each word in a string, Efficient method to generate UUID String in Java (UUID.randomUUID().toString() without the dashes). Definition and Usage. Should I give a brutally honest feedback on course evaluations? Convert to BASE64 characters: tsU= BASE32. Actually, that's not a problem with base64, it's a problem with your application. PowerApps remove special characters from string PowerApps replace double quotes PowerApps substring PowerApps replace space PowerApps replace data source PowerApps replace Line break PowerApps Replace function Powerapps Replace function helps to identify the string to replace by starting position and length. import base64 Is there any reason on passenger airliners not to have a physical lock between throttles? Base64 is a generic term for a number of similar encoding schemes that encode binary data by treating it numerically and translating it into a base-64 representation. 7-Eleven breacha team of attackers used SQL injection to penetrate corporate systems at several companies, primarily the 7-Eleven retail chain, stealing 130 million credit card numbers. txt files places It shows about base64 encoding only and i have no problem with base64 encoding an image or a string For example, the filename "test \r This can be useful for populating image fields or for embedding an attachment in XML data . So first of all you should choose which charset to use. How to achieve this, Which encoding will help me to achieve this? I am currently using Ruby's 'base64' but the strings that are created have special characters like /+= . This is my dynamic expression: trim (first (skip (split (first (split (body ('Html_to_text'),'Domain ID :')),'Publisher:'),1))) The end result should be: Microsoft Windows. Can also select entire value with a single double click due to no punctuation. CGAC2022 Day 10: Help Santa sort presents! This too could be done as a pre/post step if you don't want to write your own encoder/decoder from the ground-up. Your badges and posts will all move over, and all URLs will continue to work as before. I have attempted with getting UUID and replace the - and pass to Base64 but its throwing exception, when it goes less than . Maybe someone can help. It replace all special characters from string. Connect and share knowledge within a single location that is structured and easy to search. When would I give a checkpoint to my D&D party that they can return to if they die? Basic improvements over Base64: Only alphanumeric characters [0-9a-zA-Z] No look-alike characters: 0OIl / 0OIl No punctuation to trigger word wrap or line break in documents and emails Can also select entire value with a single double click due to no punctuation. Understanding The Fundamental Theorem of Calculus, Part 2, Better way to check if an element only exists in one array, Received a 'behavior reminder' from manager. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. While base64 encoder/decoders are trivial, replacement subsitution can be done in a simple pre/post processing step of an existing base64 encode/decode functions (inside wrappers) -- no need to re-invent the wheel (entirely). Mark as New; Bookmark . Super User In response to Otto. Oracle Communities Log In Register Home Return :- The resulting String. First (and probably only) time I've ever downvoted an answer from Jon Skeet. Is embedding background image data into CSS as Base64 good or bad practice? Here is an example to show how to use it. In addition to the standard format specifications described in printf (1) and printf (3), printf interprets: %b expand backslash escape sequences in the corresponding argument %q quote the argument in a way that can be reused as shell input % (fmt)T output the date-time string resulting from using FMT as a format string for strftime (3) Share (The extra 65th character, "=", is used to signify a special processing function.) Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. HBGary breachhackers related to the Anonymous activist group used SQL Injection to take down the IT security company's website. But I want to convert the string into a string which will have only alphanumerical letters. Why is it so much harder to run on a treadmill when not holding the handlebars? The \w metacharacter is used to find a word character. Is there any way to handle this? Convert to BASE64 characters: TVqQ. I need to encode a string of about 1000 characters that can be any byte value (00-FF). Asking for help, clarification, or responding to other answers. Appropriate translation of "puer territus pedes nudos aspicit"? Programming Tutorials and Examples for Beginners, PHP Base64 Encode String Safely: Replace +, / and = Characters PHP Tutorial, Python Implements Images Base64 Encode for Beginners Python Tutorial, Best Practice to Save Python String to File Safely Python File Operation Tutorial, A Simple Guide to Detect Python String Contains Non-ASCII Characters Python Tutorial, How to Remove Special Characters From a Python String: An Introduction, Python Replace String with Case Insensitive for Beginners Python Tutorial, Improve NLTK Word Lemmatization with Parts-of Speech NLTK Tutorial, A Simple Guide to Encode and Decode HTML Entities in Python String Python Web Crawler Tutorial, OpenCV Replace a Part of Image Using Other Image or NumPy Array Python OpenCV Tutorial. Asking for help, clarification, or responding to other answers. Note: A novel de facto standard may not be adequate for your needs. arrows or bullets). Regroup into 6-bit quantities and zero-pad as necessary: 101101 101100 010100 null. The result of this function will change . Effect of coal and natural gas burning on particulate matter pollution, Typesetting Malayalam in xelatex & lualatex gives error, Connecting three parallel LED strips to the same power supply. Swift Problem change text color in datepicker format. Find centralized, trusted content and collaborate around the technologies you use most. encoding. That means the method does not replace characters or strings from a string. I am trying to get 22 char length of unique string by encoding the UUID, but all i need to have Alphanumeric, but what i am getting is with some special characters like below, FN5GEqCORP6--eXL4kJE5g IayPN1DsT5-XqUDJl6UJ-A. Does balls to the wall mean full speed ahead or full speed ahead and nosedive? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Unable to download file with special character from Amazon S3, Convert a GUID to a shorter string using 36 character alphabet 0-9 and A-Z, How to avoid the same queue job being processed more than once when scaled across multiple dynos on Heroku. oracle-tech Coming soon, the Groundbreakers Developer Community will be migrating to Oracle Forums for a refreshed experience. To allow additional characters in user input, add those characters to the character class in the regular expression pattern. Effect of coal and natural gas burning on particulate matter pollution, No punctuation to trigger word wrap or line break in documents and emails. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The general rule is to choose a set of 64 characters that is both 1) part of a subset common to most encodings, and 2) also printable. Design The particular choice of characters to make up the 64 characters required for Base64 varies between implementations. How many transistors at minimum do you need to build a general-purpose computer? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In computer programming, Base64 is a group of binary-to-text encoding schemes that represent binary data (more specifically, a sequence of 8-bit bytes) in sequences of 24 bits that can be represented by four 6-bit Base64 digits. The disadvantage with this approach is that the ratio of output characters to input bytes is not fixed. The extended ASCII table contains basic characters sorted by ASCII code. A Simple Guide to Python Base64 Encode String for Beginners Python Tutorial. Yeah - the root of the issue here is that you were searching/replacing Sure. The encoding process represents 24-bit groups of input bits as output strings of 4 encoded characters. To do that we simply specify the target character (an asterisk), followed by the replacement text (the @ sign). Why not write your own Base64 encoder/decoder, but replace those chars in your algorithm. How to set a newcommand to be incompressible by justification? src/Utils base64DecodeStringUrlSafe method Polish Characters in given/family name fields of token are wrong when decoded. Stay tuned for additional updates. But, you better have at least 3 other chars that ARE useable in your app to represent the +/ and ='s base62 is essentially base64 but alphanumeric only. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. The Base64 term originates from a specific MIME-content transfer encoding. How do I create a Java string from the contents of a file? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Some characters are utilized by URLs for special use in defining their syntax. The Base64 term originates from a specific MIME-content transfer encoding. But I have to convert the string into a string without having any special character so I used Base64 But in Base64 we are using equals to symbol (=) which is a special character. The only tricky part here is that the asterisk is a reserved character in Windows PowerShell; because of that we need to "escape" the character before we can perform a search-and-replace operation using that character. It is starting to become something of a de facto standard in cryptocurrency addresses. When these . Why does base64 encoding require padding if the input length is not divisible by 3? As a native speaker why is this usage of I've so awkward? Meet Base64 Decode and Encode, a simple online tool that does exactly what it says: decodes from Base64 encoding as well as encodes into it quickly and easily. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Here is an example. but some Windows-specific one like 1250) run a script to change it to UTF-8 Hi. @JamesQMurphy: I wouldn't answer it this way now, of course (this was over 10 years ago) - but I can't delete it as it's accepted, and there are other answers that have more detail. From the encode result, we can find there are not +, / and = in result. Not the answer you're looking for? rev2022.12.9.43105. These would typically include characters and signs that serve a specific purpose, like mathematical operators, currency symbols, punctuation, graphic symbols (e.g. SQL Server uses UTF-16 Little Endian only for NVARCHAR data, and even for XML. if you encounter > , add -1. if var != 0 then you have encounter either < either > twice.See the previous char and replace with < or >. If your application can't tolerate, There are plenty of "applications" that cannot tolerate. Less dense than Base64, but eliminates unwanted characters completely. How did muzzle-loaded rifled artillery solve the problems of the hand-held rifle? To avoid +, / characters, base64 library provides url safe function. that has a maximum file size with 4 GB. (You still have a couple of non-alphanumeric characters for characters 62 and 63. They are not safe to url. Press the Alt key, and hold it down. URL Encoding of Special Characters. increase in size. var cleaned = stringToReplace.replace (/ [^\w\s.]/gm, '') A working example. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Add a new light switch in line with another switch? This function is case-sensitive. Here we write two functions to improve base64 encode and decode string safely. A word character is any letter, decimal digit, or punctuation connector such as an underscore. The text is: "This is a testmail " (without the ") So on the mailserver I open the message and the body is base64 encoded and contains The easiest way would be to use a regular expression to match all nonalphanumeric characters and replace them with an empty string. check if string has special characters java. (TA) Is it appropriate to ignore emails from a student asking obvious questions? Also I can't remove special character only i have to replace all the special characters to maintain unique between two different strings. Our tool is free to use. Not the answer you're looking for? The String.Replace () method replaces a character or a string with another character or string in a string. TSYong Helper II Remove Special Character 12-14-2020 11:35 PM Hi All, I'm having an issue where special character is being captured in my dynamic content. I don't want to use Hex because it's not dense enough. Base58Check is an option. However, the basic base64 function is not safe, as to function: This function can encode a string with base64, however, the result contains some characters, such as +, / and =. Sure, it will not be able to be decoded with a normal decoder, but if that's not an issue, then whyt worry about it. Replace Special Characters In Java using replaceAll () The syntax of the replaceAll () method is following:- public String replaceAll(String regex, String replacement) Parameter:- regex - the regular expression to which this string is to be matched; replacement - the string to be substituted for each match. Does a 120cc engine burn 120cc of fuel a minute? remove any special characters from string and space with - regex in c#; Remove numbers and special characters in a string c#; removing special characters from string in c#; replace special characters .net core regex; remove special characters and space from string c#; how to remove special characters C#; c# remove special character -recognise the charset of the input (if it's Windows program it very well might NOT be the expected Latin1/iso-8859! ToCharacters Type: Text constant or code The new characters with which you want to replace the FromCharacters. Characters of the Base64 alphabet can be grouped into four groups: Uppercase letters (indices 0-25): ABCDEFGHIJKLMNOPQRSTUVWXYZ Lowercase letters (indices 26-51): abcdefghijklmnopqrstuvwxyz Digits (indices 52-61): 0123456789 Special symbols (indices 62-63): +/ It is very important to note that the Base64 letters are case sensitive. Obtain closed paths using Tikz random decoration on circles. Rather than invent something new, I'd use Base64.urlsafe_encode64 (and its counterpart Base64.urlsafe_decode64) which is basically base64 with + and / replaced with - and _. And here's a ready to go implementation of Base58 in c#. Better way to check if an element only exists in one array. But, he could subst that for another char, only have to worry about 1, instead of 3 @LarryF: Padding can be omitted if length can be detected in some other way, can't it? Encryption always produces "special characters" because it converts the input (from text or whatever it was) to a collection of bytes - which aren't characters, they are eight bit values which may contain valid characters but are more likely not to. How do I convert a String to an int in Java? Special characters that need to be processed in URL; WEB: Special characters needed in the URL; binascii.Error: Invalid base64-encoded string: number of data characters; Day55 - Ajax (Ajax and XML, GET request, POST request distinction, URL address bar transmission Chinese, special characters) When the URL is a parameter with special characters . To type a special character, using an Alt keyboard sequence: Ensure that the Num Lock key has been pressed, to activate the numeric key section of the keyboard. Yes, that's right, just 64 characters is enough to encode any data, of any size. baHR0cHM6Ly93d3cuZXhhbXBsZS5jb20vYyVjL2MrKy8_aWQ9MSZwPTM=. Base64 alphabet characters can be grouped into four groups: Capital letters (0-25): A B C D E F G H I J K L M N O P Q R S T U V W X Y Z You could use Base32 instead. Thanks for contributing an answer to Stack Overflow! Java: Different results when decoding base64 string with java.util.Base64 vs android.util.Base64. Convert the following 40-bit string to BASE32: // This will remove all special characters except space and period. FromCharacters Type: Text constant or code The characters that you want to replace. Connect and share knowledge within a single location that is structured and easy to search. Base64 alphabet contains 64 characters Basic ASCII which are used to encode data. baHR0cHM6Ly93d3cuZXhhbXBsZS5jb20vYyVjL2MrKy8/aWQ9MSZwPTM=. I have a problem with Mime/base64 decoding. How to get an enum value from a string value in Java. Convert the following 16-bit string to BASE64 (this could occur only at the end of a file): Original binary string: 10110110 11000101. 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