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28 lines
615 B
Go
28 lines
615 B
Go
package messages
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import (
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"crypto/sha256"
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"encoding/base64"
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"fmt"
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)
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const (
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prefixLength = 4
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IDSize = sha256.Size + 4 // 4 is equal with len(prefix)
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)
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var (
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prefix = []byte("sha-") // 4 bytes
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)
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func HashID(peerID string) ([]byte, string) {
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idHash := sha256.Sum256([]byte(peerID))
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idHashString := string(prefix) + base64.StdEncoding.EncodeToString(idHash[:])
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prefixedHash := append(prefix, idHash[:]...)
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return prefixedHash, idHashString
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}
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func HashIDToString(idHash []byte) string {
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return fmt.Sprintf("%s%s", idHash[:prefixLength], base64.StdEncoding.EncodeToString(idHash[prefixLength:]))
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}
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