The best replacement for hmac is hash.

The best alternatives to hmac are rated as following:
★★★★★  hash
★★★★  sha
★★★★  oauth
★★★  signature
★★  bcrypt
★★  digital signature
★  cbc-mac
★  md5
  digest
  cmac

Your alternative for hmac is not listed? Suggest!
Speaking about hmac, one probably shouldn't forget about aes.

Other search terms related to hmac and their ratings are:
★★★★★ aes
You have in mind a companion for hmac and it is not yet here? Propose!



Google Trends

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hmac
hash
sha