Hmac using sha2-256.
bytesToHex(hmacSha2_256(textToBytes("key"), textToBytes("The quick brown fox jumps over the lazy dog"))) == "f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8" Copy
bytesToHex(hmacSha2_256(textToBytes("key"), textToBytes("The quick brown fox jumps over the lazy dog"))) == "f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8"
Hmac using sha2-256.