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NAME sha3sum - Keccak, SHA-3, SHAKE, and RawSHAKE checksum utilities SYNOPSIS keccaksum [option ...] [file ...] keccak-224sum [option ...] [file ...] keccak-256sum [option ...] [file ...] keccak-384sum [option ...] [file ...] keccak-512sum [option ...] [file ...] sha3-224sum [option ...] [file ...] sha3-256sum [option ...] [file ...] sha3-384sum [option ...] [file ...] sha3-512sum [option ...] [file ...] shake256sum [option ...] [file ...] shake512sum [option ...] [file ...] rawshake256sum [option ...] [file ...] rawshake512sum [option ...] [file ...] DESCRIPTION Fully configurable byte-orientated checksum utilities for Keccak and its close derivatives SHA-3, SHAKE and RawSHAKE. This utilities can generate checksums or verify the checksums of files. OPTIONS -u Use upper-case output. -l Use lower-case output. -b Use binary output. -c Check checksums. -x Use hexadecimal input. -v Be verbose. -R rate Select rate. -C capacity Select capacity. -N, -O output-size Select output size. -S, -B state-size Select state size. -W word-size Select word size. -Z squeeze-count Select squeeze count. RATIONALE We probably do not need this, but it is nice to have in case SHA-2 gets compromised. SEE ALSO libkeccak(7), sum(1), cksum(1), md5sum(1), md6sum(1), sha1sum(1), sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1) PERFORMANCE Performance comparison on a 1 GiB file (yes, that is quite large) with /dev/urandom data: $ keccak-224sum │ $ keccak-256sum real 0m9.550s │ real 0m9.841s user 0m9.223s │ user 0m9.560s sys 0m0.320s │ sys 0m0.260s │ $ keccak-384sum │ $ keccak-512sum real 0m12.902s │ real 0m18.084s user 0m12.580s │ user 0m17.823s sys 0m0.313s │ sys 0m0.243s │ $ keccaksum │ $ sha1sum real 0m10.438s │ real 0m3.421s user 0m10.140s │ user 0m3.157s sys 0m0.287s │ sys 0m0.253s │ $ sha224sum │ $ sha256sum real 0m8.196s │ real 0m9.361s user 0m7.910s │ user 0m9.097s sys 0m0.263s │ sys 0m0.257s │ $ sha384sum │ $ sha512sum real 0m5.450s │ real 0m4.507s user 0m5.223s │ user 0m4.247s sys 0m0.220s │ sys 0m0.257s │ $ md5sum │ $ md6sum real 0m2.987s │ real 1m28.873s user 0m2.703s │ user 1m28.470s sys 0m0.283s │ sys 0m0.360s Note: The times are a bit random, and only one run has been made. "user" is the most interesting data. Additionally, only the pure keccak variants have been tested because the difference is between them and the other are quite small; and of course the other hashing utilities from other packages using other algorithm-families. NOTES Packagers are advised to separate sha3sum(1) into its own packages, apart from the other commands, as it is mearly provided for compatibility and it could cause package conflict with other implementations that only provide sha3sum(1) such as busybox.
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