<?php $secretKey = "merchantSecretKey"; $merchantApiKey = "merchantApiKey"; $externalOrderId = "1234"; $data = $merchantApiKey.$externalOrderId; echo hash_hmac('sha1', 'The quick brown fox jumped over the lazy dog.', $secretKey); /* String secretKey = "merchantSecretKey"; String merchantApiKey = "merchantApiKey"; String externalOrderId = "1234"; String data = merchantApiKey + externalOrderId; Mac m = Mac.getInstance("HmacSHA1"); m.init(new SecretKeySpec(secretKey.getBytes("UTF-8"), "HmacSHA1")); byte[] hash = m.doFinal(data.getBytes("UTF-8")); String secret = new String(Base64.encodeBase64(hash)); */
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