chore: vendor

vendor/github.com/pjbgf/sha1cd/internal/const.go

@@ -0,0 +1,42 @@
+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
+
+	// The number of pre-step compression state to store.
+	// Currently there are 3 pre-step compression states required: 0, 58, 65.
+	PreStepState = 3
+
+	Magic         = "shacd\x01"
+	MarshaledSize = len(Magic) + 5*4 + Chunk + 8
+)