46 lines
897 B
Go
46 lines
897 B
Go
package datastructures
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import "encoding/binary"
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type Action uint8
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const (
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ActionNul = Action(0)
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ActionSign = Action(1)
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ActionRevoke = Action(2)
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)
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func (a Action) String() string {
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switch a {
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case ActionNul:
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return "NUL"
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case ActionSign:
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return "SIGN"
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case ActionRevoke:
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return "REVOKE"
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default:
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return "unknown"
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}
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}
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func encode24BitLength(data []byte) []byte {
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lengthBytes := make([]byte, 4)
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binary.BigEndian.PutUint32(lengthBytes, uint32(len(data)))
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return lengthBytes[1:]
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}
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// calculate length from 24 bits of data in network byte order
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func Decode24BitLength(bytes []byte) int {
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return int(binary.BigEndian.Uint32([]byte{0x0, bytes[0], bytes[1], bytes[2]}))
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}
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func CalculateXorCheckSum(byteBlocks [][]byte) byte {
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var result byte = 0x0
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for _, byteBlock := range byteBlocks {
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for _, b := range byteBlock {
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result ^= b
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}
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}
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return result
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}
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