There are two modes this application can run in, encode and decode, which have a slight difference in their usage.

For security reasons, running the application in its own dedicated directory it is highly recommended (or specifying its working directory to a one dedicated to this application). Should it be run by an untrusted user, it must be ensured that the user cannot set JVM arguments.

The application also allows for error detection, which can be enabled by appending "errdetect" to any valid decoding command. If an error occurs during the decoding, the application attempts to find a similar input (at most one symbol difference) that would decode correctly and displays it to the user.

required verbatim, required group, required parameter, [optional verbatim], (tuple)

java -jar jumiru-1.0.jar encode data_format input_destination output_destination HRP

java -jar jumiru-1.0.jar decode data_format input_destination output_destination [errdetect]

data_format = base64/bin/hex

input_destination = stdin/(file file_name)/(arg data_part)/emptyarg

output_destination = stdout/(file file_name)

Note: Input from stdin must be terminated by a newline

Note: file_name must be in the current working directory (or its subdirectory)

• Encode "a" in HRP with empty data part in hex read from argument and output it to stdout

  encode hex arg "" stdout a or encode hex emptyarg stdout a

• Encode "b" in HRP with binary data part from argument and output it to file

  encode bin arg 0110101 file output1.txt b

• Encode "a" in HRP with base64 data part from input1.txt file into stdout

  encode base64 file input1.txt stdout a

• Decode bech32m string read from argument to base64, output to stdout.

  decode base64 arg abcdef1l7aum6echk45nj3s0wdvt2fg8x9yrzpqzd3ryx stdout

• Decode data from input2.txt to binary data and enable error detection, output to stdout.

  decode bin file input2.txt stdout errdetect