What can you do with Base64 Encode Online? Online Base64 Encode is very unique tool to encode Base64 data. Term Base64 initiated from a precise MIME(Multipurpose Internet Mail Extension) content Transfer encoding. Base64 is a part of a group of binary-to-text encoding schemes which represent binary data in an ASCII string format. I have binary data in an unsigned char variable. I need to convert them to PEM base64 in c. I looked in openssl library but i could not find any function. Does any body have any idea?
To encode or decode standard input/output or any file content, Linux uses base64 encoding and decoding system. Data are encoded and decoded to make the data transmission and storing process easier. Encoding and decoding are not similar to encryption and decryption. Encoded data can be easily revealed by decoding. So, this command line utility tool can't be used for data security. Alphabet, number and ‘=' symbol are used to encode any data.base64 [OPTION] [INFILE] [OUTFILE]
You can use different types of options with base64 command. Data can be taken from any file or standard input while encoding or decoding. After encode or decode, you can send the output in a file or print the output in the terminal.
Options:
-e or –encode
This option is used to encode any data from standard input or from any file. It is the default option.
-d or –decode
This option is used to decode any encoded data from standard input or from any file.
-n or –noerrcheck
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By default, base64 checks error while decoding any data. You can use –n or –noerrcheck option to ignore checking at the time of decoding.
-u or –help
This option is used to get information about the usage of this command.
-i, –ignore-garbage
This option is used to ignore non-alphabet character while decoding.
–copyright
It is used to get copyright information.
–version
It is used to get the version information.
How you use the base64 command in Linux is shown in this tutorial by using some examples.
Example#1: Encoding text data
You can encode any text data by using base64 in the command line. When you want to encode any data using base64 then using -e or –encode option is optional. So, if you don't mention any option with base64 then it will work for encoding. The following command will encode the data, ‘linuxhint.com' and print the encoded data as output.
Pixave 1 0 2. Output:
Example#2: Decoding text data
The following command will decode the encoded text, ‘bGludXhoaW50LmNvbQ‘ and print the original text as output.
Output:
Example#3: Encoding text file
Create a text file named, ‘sample.txt' with the following text that will be encoded by using base64.
PHP uses base64_encode and base64_decodefor data encoding and decoding
You can print the encoded text in the command line or store the encoded text into another file. The following command will encode the content of the sample.txt file and print the encoded text in the terminal.
Output:
The following commands will encode the content of the sample.txt file and save the encoded text into the encodedData.txt file.
$ cat encodedData.txt
Output:
Example#4: Decoding text file
The following command will decode the content of the encodedData.txt file and print the output in the terminal
Output:
The following commands will decode the content of the encodedData.txt file and store the decoded content into the file, originalData.txt.
$ cat originalData.txt
Output:
Example#5: Encoding any user-defined text
Bluetooth screen lock v1 3 4. Create a bash file named encode_user_data.sh with the following code. The following script will take any text data as input, encode the text by using base64 and print the encoded text as output.
echo'Enter Some text to encode'
read text
etext=`echo-n$text| base64`
echo'Encoded text is : $etext'
Run the script. Brochure lab 1 2 – pages templates.
Output:
Example#6: Checking user validity by decoding text
Create a bash file named checkValidity.sh and add the following code. In this example, a secret text is taken from the user. A predefined encoded text is decoded by base64 and compared with the user input. If both values are equal then the output will be ‘You are authenticated' otherwise the output will be ‘You are not authenticated'. Using this simple decoding code, normal validation can be done very easily.
echo'Type your secret code'
read secret
otext=`echo'Nzc3Nzk5Cg'| base64 --decode`
if[$secret$otext]; then
echo'You are authenticated'
else
echo'You are not authenticated'
fi
Run the script.
Output:
Conclusion:
For any sensitive data like password or any confidential data, encoding and decoding system is not suitable at all. You must use encryption and decryption system for securing these type of data.
This module implements a base64 encoder and decoder.
Unstable API.
Base64 is an encoding and decoding technique used to convert binary data to an ASCII string format. Each Base64 digit represents exactly 6 bits of data. Three 8-bit bytes (i.e., a total of 24 bits) can therefore be represented by four 6-bit Base64 digits.
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Encoding data
Apart from strings you can also encode lists of integers or characters:
Decoding data
URL Safe Base64
- hashes module for efficient computations of hash values for diverse Nim types
- md5 module implements the MD5 checksum algorithm
- sha1 module implements a sha1 encoder and decoder
Encodes s into base64 representation.
This procedure encodes an openarray (array or sequence) of either integers or characters.
If safe is true then it will encode using the URL-Safe and Filesystem-safe standard alphabet characters, which substitutes - instead of + and _ instead of /.
See also:
- encode proc for encoding a string
- decode proc for decoding a string
Example:
SourceEditEncodes s into base64 representation.
This procedure encodes a string.
If safe is true then it will encode using the URL-Safe and Filesystem-safe standard alphabet characters, which substitutes - instead of + and _ instead of /.
See also:
- encode proc for encoding an openarray
- decode proc for decoding a string
Example:
SourceEditEncodes s into base64 representation as lines. Used in email MIME format, use lineLen and newline.
This procedure encodes a string according to MIME spec.
See also:
- encode proc for encoding a string
- decode proc for decoding a string
Example:
SourceEditDecodes string s in base64 representation back into its original form. The initial whitespace is skipped.
See also:
- encode proc for encoding an openarray
- encode proc for encoding a string
Example:
SourceEdit