I'm getting a message that the community 'Package flash-plugin is broken, integrity check has failed.' (details below)

Is it safe? Or is this just a spurious message?


Code:
  Error: INVALID:flash-plugin-11.2.202.643-release.x86_64 (Adobe Flash Plugin): Signature verification failed [4-Signatures public key is not available]
     Header V3 DSA/SHA1 Signature, key ID f6777c67: NOKEY
     Header SHA1 digest: OK (4049465e07f5c8a074acbcf6039f11f54e4a77e0)
     MD5 digest: OK (d9cc5f78ede4210f6a1fcad9c1ddf224)
     V3 DSA/SHA1 Signature, key ID f6777c67: NOKEY