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23 lines
844 B
Go
23 lines
844 B
Go
package androidsmsgateway
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/hex"
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)
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// Sign returns the hex-encoded HMAC-SHA256 signature for a webhook payload.
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// The message is payload concatenated with timestamp (the X-Timestamp header value).
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func Sign(secretKey, payload, timestamp string) string {
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mac := hmac.New(sha256.New, []byte(secretKey))
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mac.Write([]byte(payload + timestamp))
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return hex.EncodeToString(mac.Sum(nil))
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}
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// VerifySignature verifies the HMAC-SHA256 signature of a webhook payload.
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// The message is payload concatenated with timestamp (the X-Timestamp header value).
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// The signature is the hex-encoded HMAC-SHA256 of that message using secretKey.
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func VerifySignature(secretKey, payload, timestamp, signature string) bool {
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return hmac.Equal([]byte(Sign(secretKey, payload, timestamp)), []byte(signature))
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}
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