43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
# hashstream
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A combined streaming hasher.
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Hashstream is designed for needing multiple different hash types from a single stream / file simultaneously.
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Hashstream does not perform any file IO on its own, it only reads and writes to stdio. You must pipe `|` or `<` redirect input to hashstream for processing.
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Useful for coordinating systems that provide different hashtypes for stored blobs.
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# Usage
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` dd if=/dev/zero bs=4M count=250 status=progress | hashstream --sha256 `
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` hashstream --all < /home/user/somefile.dat `
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```
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Usage: hashstream [OPTIONS]
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Options:
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--all Enable all hash types, can not be used with any other hash type flag [DEFAULT]
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--sha256 SHA2-256
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--sha3-256 SHA3-256
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--sha1 SHA1
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--crc32-iso CRC_32_ISO_HDLC
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--crc32-posix CRC_32_CKSUM
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--crc32-xfer CRC_32_XFER
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--blake256 Blake2b256
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--blake512 Blake2b512
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--blake3 Blake3
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--md5 MD5
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-h, --help Print help
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-V, --version Print version
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```
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# TODO:
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- Multithreading? Maybe higher performance for multiple hashes at same time?
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- More hash types? idk what else may be useful
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- Passthrough processing? Maybe output hashes to stderr or socket / named pipe?
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- More perf tuning? Is faster than `*sum` utils on Arch for me, but slower under Alma and MacOS...
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- Polynym binary? i.e. like busybox, selects set of hashes based on binary / link name?
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