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42 lines
1 KiB
Go
42 lines
1 KiB
Go
package shared
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const (
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// Constants for the SHA-1 hash function.
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K0 = 0x5A827999
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K1 = 0x6ED9EBA1
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K2 = 0x8F1BBCDC
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K3 = 0xCA62C1D6
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// Initial values for the buffer variables: h0, h1, h2, h3, h4.
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Init0 = 0x67452301
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Init1 = 0xEFCDAB89
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Init2 = 0x98BADCFE
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Init3 = 0x10325476
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Init4 = 0xC3D2E1F0
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// Initial values for the temporary variables (ihvtmp0, ihvtmp1, ihvtmp2, ihvtmp3, ihvtmp4) during the SHA recompression step.
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InitTmp0 = 0xD5
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InitTmp1 = 0x394
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InitTmp2 = 0x8152A8
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InitTmp3 = 0x0
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InitTmp4 = 0xA7ECE0
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// SHA1 contains 2 buffers, each based off 5 32-bit words.
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WordBuffers = 5
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// The output of SHA1 is 20 bytes (160 bits).
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Size = 20
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// Rounds represents the number of steps required to process each chunk.
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Rounds = 80
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// SHA1 processes the input data in chunks. Each chunk contains 64 bytes.
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Chunk = 64
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// The number of pre-step compression state to store.
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// Currently there are 3 pre-step compression states required: 0, 58, 65.
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PreStepState = 3
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Magic = "shacd\x01"
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MarshaledSize = len(Magic) + 5*4 + Chunk + 8
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)
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