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go: Refactor for clarity and performance #34

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merged 4 commits into from
Feb 22, 2023
Merged

go: Refactor for clarity and performance #34

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f5d5267
tests: Refactor and add benchmark with collision data
pjbgf Jan 23, 2023
5ac3a2d
ubc: Convert dv types to uint32
pjbgf Feb 21, 2023
1e872be
go: Refactor for clarity and performance
pjbgf Feb 22, 2023
73b0ccd
ci: Add Go 1.20 and remove 1.15
pjbgf Feb 22, 2023
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2 changes: 1 addition & 1 deletion .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ jobs:
strategy:
fail-fast: false
matrix:
go-version: [1.19.x]
go-version: [1.20.x]
platform: [ubuntu-latest]

runs-on: ${{ matrix.platform }}
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2 changes: 1 addition & 1 deletion .github/workflows/nightly.yml
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Expand Up @@ -18,7 +18,7 @@ jobs:
- name: Setup Go
uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # v3.5.0
with:
go-version: 1.19.x
go-version: 1.20.x
- name: Run fuzzers
env:
FUZZ_TIME: 30m
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4 changes: 2 additions & 2 deletions .github/workflows/tests.yml
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Expand Up @@ -21,7 +21,7 @@ jobs:
strategy:
fail-fast: false
matrix:
go-version: [1.15.x, 1.16.x, 1.17.x, 1.18.x, 1.19.x]
go-version: [1.16.x, 1.17.x, 1.18.x, 1.19.x, 1.20.x]
platform: [ubuntu-latest, macos-latest, windows-latest]

runs-on: ${{ matrix.platform }}
Expand All @@ -43,7 +43,7 @@ jobs:
- name: Setup Go
uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # v3.5.0
with:
go-version: 1.19.x
go-version: 1.20.x
- name: Run benchmarks
run: make bench
- name: Run fuzzers
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38 changes: 38 additions & 0 deletions internal/const.go
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@@ -0,0 +1,38 @@
package shared

const (
// Constants for the SHA-1 hash function.
K0 = 0x5A827999
K1 = 0x6ED9EBA1
K2 = 0x8F1BBCDC
K3 = 0xCA62C1D6

// Initial values for the buffer variables: h0, h1, h2, h3, h4.
Init0 = 0x67452301
Init1 = 0xEFCDAB89
Init2 = 0x98BADCFE
Init3 = 0x10325476
Init4 = 0xC3D2E1F0

// Initial values for the temporary variables (ihvtmp0, ihvtmp1, ihvtmp2, ihvtmp3, ihvtmp4) during the SHA recompression step.
InitTmp0 = 0xD5
InitTmp1 = 0x394
InitTmp2 = 0x8152A8
InitTmp3 = 0x0
InitTmp4 = 0xA7ECE0

// SHA1 contains 2 buffers, each based off 5 32-bit words.
WordBuffers = 5

// The output of SHA1 is 20 bytes (160 bits).
Size = 20

// Rounds represents the number of steps required to process each chunk.
Rounds = 80

// SHA1 processes the input data in chunks. Each chunk contains 64 bytes.
Chunk = 64

Magic = "shacd\x01"
MarshaledSize = len(Magic) + 5*4 + Chunk + 8
)
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