NAME blakesum - Checksum utilities for the BLAKE-family of hashing functions SYNOPSIS bsum [-l bits] [-c | -B | -L | -U] [-xz] [file] ... b224sum [-c | -B | -L | -U] [-xz] [file] ... b256sum [-c | -B | -L | -U] [-xz] [file] ... b384sum [-c | -B | -L | -U] [-xz] [file] ... b512sum [-c | -B | -L | -U] [-xz] [file] ... b2sum [-l bits | -X bits] [-c | -B | -L | -U] [-sxz] [file] ... DESCRIPTION Print or check BLAKE, BLAKE2, or BLAKE2X checksums. bsum is used for BLAKE2 checksums, and b2sum is used for BLAKE2 and BLAKE2X checksums. b224sum is an alias for bsum -l 224. b256sum is an alias for bsum -l 256. b384sum is an alias for bsum -l 384. b512sum is an alias for bsum -l 512. OPTIONS The following options are supported: -B Output checksums in binary representation. This suppresses the filenames and checksum delimiters. Only the checksums are printed. -c Read checksums from the file and check them against the files on your systems. The input files files should be formatted as the output of the program, or similarly. This is not going to work if any of the filenames in the input files starts with or , or if they contain a , unless the -z option is also used. -L Output checksums in lower-case hexadecimal representation. (Default) -l bits For bsum: Select version of the BLAKE algorithm. Valid values are 224 (default), 256, 384, and 512. For b2sum: Select output size, valid values are multiples of 8 between 8 and 512, inclusively, or if the -s option is used between 8 and 256, inclusively. (Default is maximum.) -s (Only available in b2sum) Use BLAKE2s instead of BLAKE2b. -U Output checksums in upper-case hexadecimal representation. -X bits (Only available in b2sum) Use BLAKE2Xb instead of BLAKE2b or BLAKE2Xs instead of BLAKE2s, and select the extended output function output length, in bits; must be a non-zero multiple of 8, and no greater than 34359738360 or (if the -s option is used) 524280. -x Convert input files from hexadecimal form to binary form before calculating the checksums. -z Lines end with NUL instead of LF. If used with -c, this applies to read files (not the output), but it will also apply more strict parsing and allow any whitespace in file names. OPERANDS The following operands are supported: file File to read. The standard input will be used - or no file is specified. EXIT STATUS 0 Successful completion. 1 Checksums did not match or a file did not exist. 2 An error occurred. NOTES BLAKE2X has not been finalised as of 2022-02-20. SEE ALSO sha3sum, sha256sum(1), sha512sum(1)