normalizeWebhookSignature function

String normalizeWebhookSignature(
  1. String signature
)

Remove prefixo sha256= se presente.

Implementation

String normalizeWebhookSignature(String signature) {
  final trimmed = signature.trim();
  if (trimmed.toLowerCase().startsWith('sha256=')) {
    return trimmed.substring(7);
  }
  return trimmed;
}