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(PHP Extension) HMAC SHA-1 Matching FIPS ExamplesProvides an example of computing an HMAC-SHA1 digest to duplicate the FIPS examples at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $crypt = new CkCrypt2(); $strToSign = 'Sample #1'; // 64-byte key $key = '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f'; // The expected result: // (from Appendix A.1 at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf ) $expectedResult = '4f4ca3d5d68ba7cc0a1208c9c61e9c5da0403c0a'; // Here is the code to duplicate the results: $crypt->put_HashAlgorithm('sha-1'); $crypt->put_EncodingMode('hex'); $crypt->SetHmacKeyEncoded($key,'hex'); $mac = $crypt->hmacStringENC($strToSign); print 'Computed: ' . $mac . "\n"; print 'Expected: ' . $expectedResult . "\n"; ?> |
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