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@@ -0,0 +1,94 @@ +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] ... + bsum [-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 <space> + or <tab>, or if they contain a <newline>, 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) |