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abd152ee5a
* Separate shared code dependencies * Fix import * Test respective shared code * Update openapi ref * Fix test * Fix test path
32 lines
681 B
Go
32 lines
681 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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peerIDSize = prefixLength + sha256.Size
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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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type PeerID [peerIDSize]byte
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func (p PeerID) String() string {
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return fmt.Sprintf("%s%s", p[:prefixLength], base64.StdEncoding.EncodeToString(p[prefixLength:]))
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}
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// HashID generates a sha256 hash from the peerID and returns the hash and the human-readable string
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func HashID(peerID string) PeerID {
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idHash := sha256.Sum256([]byte(peerID))
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var prefixedHash [peerIDSize]byte
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copy(prefixedHash[:prefixLength], prefix)
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copy(prefixedHash[prefixLength:], idHash[:])
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return prefixedHash
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}
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