27 lines
510 B
Go
27 lines
510 B
Go
package cryptography
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import (
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"crypto/hmac"
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"crypto/rand"
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"crypto/sha256"
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)
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func GenerateHMACKey(size int) ([]byte, error) {
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key := make([]byte, size)
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if _, err := rand.Read(key); err != nil {
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return nil, err
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}
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return key, nil
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}
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func ComputeHMAC(key, message []byte) []byte {
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h := hmac.New(sha256.New, key)
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h.Write(message)
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return h.Sum(nil)
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}
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func ValidateHMAC(key, message, messageHMAC []byte) bool {
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expectedHMAC := ComputeHMAC(key, message)
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return hmac.Equal(messageHMAC, expectedHMAC)
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}
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