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127 lines
2.6 KiB
Go
127 lines
2.6 KiB
Go
// GENERATED CODE. DO NOT MODIFY!
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package internal
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import "encoding/binary"
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func ChaCha20Block(s *[16]uint32, out []byte, rounds int) {
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var x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,x10,x11,x12,x13,x14,x15 = s[0],s[1],s[2],s[3],s[4],s[5],s[6],s[7],s[8],s[9],s[10],s[11],s[12],s[13],s[14],s[15]
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for i := 0; i < rounds; i+=2 {
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var x uint32
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x0+=x4
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x=x12^x0
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x12=(x << 16) | (x >> (32 - 16))
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x8+=x12
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x=x4^x8
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x4=(x << 12) | (x >> (32 - 12))
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x0+=x4
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x=x12^x0
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x12=(x << 8) | (x >> (32 - 8))
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x8+=x12
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x=x4^x8
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x4=(x << 7) | (x >> (32 - 7))
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x1+=x5
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x=x13^x1
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x13=(x << 16) | (x >> (32 - 16))
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x9+=x13
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x=x5^x9
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x5=(x << 12) | (x >> (32 - 12))
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x1+=x5
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x=x13^x1
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x13=(x << 8) | (x >> (32 - 8))
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x9+=x13
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x=x5^x9
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x5=(x << 7) | (x >> (32 - 7))
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x2+=x6
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x=x14^x2
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x14=(x << 16) | (x >> (32 - 16))
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x10+=x14
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x=x6^x10
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x6=(x << 12) | (x >> (32 - 12))
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x2+=x6
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x=x14^x2
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x14=(x << 8) | (x >> (32 - 8))
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x10+=x14
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x=x6^x10
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x6=(x << 7) | (x >> (32 - 7))
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x3+=x7
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x=x15^x3
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x15=(x << 16) | (x >> (32 - 16))
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x11+=x15
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x=x7^x11
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x7=(x << 12) | (x >> (32 - 12))
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x3+=x7
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x=x15^x3
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x15=(x << 8) | (x >> (32 - 8))
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x11+=x15
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x=x7^x11
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x7=(x << 7) | (x >> (32 - 7))
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x0+=x5
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x=x15^x0
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x15=(x << 16) | (x >> (32 - 16))
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x10+=x15
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x=x5^x10
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x5=(x << 12) | (x >> (32 - 12))
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x0+=x5
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x=x15^x0
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x15=(x << 8) | (x >> (32 - 8))
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x10+=x15
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x=x5^x10
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x5=(x << 7) | (x >> (32 - 7))
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x1+=x6
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x=x12^x1
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x12=(x << 16) | (x >> (32 - 16))
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x11+=x12
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x=x6^x11
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x6=(x << 12) | (x >> (32 - 12))
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x1+=x6
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x=x12^x1
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x12=(x << 8) | (x >> (32 - 8))
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x11+=x12
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x=x6^x11
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x6=(x << 7) | (x >> (32 - 7))
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x2+=x7
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x=x13^x2
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x13=(x << 16) | (x >> (32 - 16))
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x8+=x13
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x=x7^x8
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x7=(x << 12) | (x >> (32 - 12))
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x2+=x7
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x=x13^x2
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x13=(x << 8) | (x >> (32 - 8))
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x8+=x13
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x=x7^x8
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x7=(x << 7) | (x >> (32 - 7))
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x3+=x4
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x=x14^x3
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x14=(x << 16) | (x >> (32 - 16))
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x9+=x14
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x=x4^x9
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x4=(x << 12) | (x >> (32 - 12))
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x3+=x4
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x=x14^x3
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x14=(x << 8) | (x >> (32 - 8))
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x9+=x14
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x=x4^x9
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x4=(x << 7) | (x >> (32 - 7))
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}
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binary.LittleEndian.PutUint32(out[0:4], s[0]+x0)
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binary.LittleEndian.PutUint32(out[4:8], s[1]+x1)
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binary.LittleEndian.PutUint32(out[8:12], s[2]+x2)
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binary.LittleEndian.PutUint32(out[12:16], s[3]+x3)
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binary.LittleEndian.PutUint32(out[16:20], s[4]+x4)
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binary.LittleEndian.PutUint32(out[20:24], s[5]+x5)
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binary.LittleEndian.PutUint32(out[24:28], s[6]+x6)
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binary.LittleEndian.PutUint32(out[28:32], s[7]+x7)
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binary.LittleEndian.PutUint32(out[32:36], s[8]+x8)
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binary.LittleEndian.PutUint32(out[36:40], s[9]+x9)
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binary.LittleEndian.PutUint32(out[40:44], s[10]+x10)
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binary.LittleEndian.PutUint32(out[44:48], s[11]+x11)
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binary.LittleEndian.PutUint32(out[48:52], s[12]+x12)
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binary.LittleEndian.PutUint32(out[52:56], s[13]+x13)
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binary.LittleEndian.PutUint32(out[56:60], s[14]+x14)
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binary.LittleEndian.PutUint32(out[60:64], s[15]+x15)
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}
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