Hashes

Calculate values of different hash functions for some piece of data at the same time. Rather efficient, as input is read only once and hashes are calculated in parallel, using all available CPU cores.

Installation

You'll need Go workspace set up, read here on how to do that.

$ go get github.com/vderyagin/hashes

To update installation just add -u flag.

Usage

hashes accepts single filename as an argument. If no arguments provided, data is read from stdin.

Output formats

Three output formats are supported: plain, json and xml:

Usage of hashes:
  -format="plain": format of output (allowed values: plain, json, xml)

Usage examples

Plain output format:

$ hashes somefile
md5: 5bf68257840b05436466d4e815bd7bac
sha1: 9a96f5808e5289aef41015df6bf9c19b62adfa93
sha256: 54a1d9399132bc5910c2e72eefaa65b1de5bb358aad8ce90cd4fa870ba15d924
sha512: f201ffc5952a4eeed9adae369ed1b12f644fcd2810678604cb0703c37e64d2e655f44cc64cbcf47f70d90208bee1275eea77d0f559fec393ce403810e896ece4
adler32: fc22ecce
crc32 (IEEE): 6568dfd6
crc32 (Castagnoli): 33f3f518
crc32 (Koopman): e6b36317
crc64 (ISO): 3d8397b0979c506c
crc64 (ECMA): 12f17c708b67b6bc
fnv32-1: 23124a1a
fnv32-1a: ae662f74
fnv64-1: af92ca3d4f7dbfda
fnv64-1a: 0615cf2092b65c54

JSON output:

$ hashes --format=json someotherfile
[
  {
    "Name": "md5",
    "Value": "f2b31d3a6a5c2827da2bb8832a082fa2"
  },
  {
    "Name": "sha1",
    "Value": "f1378a19c1ff20cfa5fef8103835084b9bdb7b2d"
  },
  {
    "Name": "sha256",
    "Value": "1c1c2a5993c6bd88588fa8f936b3e90eb64249de0088273e0479b494afaa36a0"
  },
  {
    "Name": "sha512",
    "Value": "3be02bd92fc20d8551a1a3e3bd71c9cbda4fddead75770b0aa867a64c80784c0958d03cc6eface14855dd36835108fdb79fae5e5aa2e2ea0211739329431edb5"
  },
  {
    "Name": "adler32",
    "Value": "933507dd"
  },
  {
    "Name": "crc32 (IEEE)",
    "Value": "7c992293"
  },
  {
    "Name": "crc32 (Castagnoli)",
    "Value": "28f9621e"
  },
  {
    "Name": "crc32 (Koopman)",
    "Value": "f98f7d0a"
  },
  {
    "Name": "crc64 (ISO)",
    "Value": "a559d223584f0660"
  },
  {
    "Name": "crc64 (ECMA)",
    "Value": "eb0b411de9b9a2bf"
  },
  {
    "Name": "fnv32-1",
    "Value": "1ff0b102"
  },
  {
    "Name": "fnv32-1a",
    "Value": "9e82a844"
  },
  {
    "Name": "fnv64-1",
    "Value": "f44436c1175a84a2"
  },
  {
    "Name": "fnv64-1a",
    "Value": "584d896cf9a92744"
  }
]

Supported hash functions

• md5
• sha1
• sha256
• sha512
• adler32
• crc32 (IEEE)
• crc32 (Castagnoli)
• crc32 (Koopman)
• crc64 (ISO)
• crc64 (ECMA)
• fnv32-1
• fnv32-1a
• fnv64-1
• fnv64-1a