Executing digital signature operations in a secure element platform runtime environment

Abstract

One or more embodiments initialize a signature validation object in a secure element (SE) platform runtime environment and utilize the signature validation object to perform signature validation operations. A system accesses an authentication path that includes a set of hash values corresponding to a set of nodes of a tree structure associated with a hash-based signature protocol utilized to generate a digital signature. The system computes a root hash value corresponding to a root node of the tree structure based on the set of hash values of the authentication path. The system verifies the root hash value against a root public key associated with the digital signature. The system determines that the digital signature is valid responsive at least in part to successfully verifying the root hash value against the root public key.