cacert-gosigner/datastructures/common.go

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package datastructures
import "encoding/binary"
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const signerTimeFormat = "010203042006.05"
func Encode24BitLength(data []byte) []byte {
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lengthBytes := make([]byte, 4)
binary.BigEndian.PutUint32(lengthBytes, uint32(len(data)))
return lengthBytes[1:]
}
// calculate length from 24 bits of data in network byte order
func Decode24BitLength(bytes []byte) int {
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return int(binary.BigEndian.Uint32([]byte{0x0, bytes[0], bytes[1], bytes[2]}))
}
func CalculateXorCheckSum(byteBlocks [][]byte) byte {
var result byte = 0x0
for _, byteBlock := range byteBlocks {
for _, b := range byteBlock {
result ^= b
}
}
return result
}