CERTIFICATE MANAGEMENT
According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to receive a message requesting a cryptographic certificate comprising a public key to be published in a blockchain, responsive to the message, publish the cryptographic certificate in the blockchain, and responsive to a second message requesting a revocation of the cryptographic certificate to be published in the blockchain, publish the revocation of the cryptographic certificate in the blockchain.