tree 834340d818e6604ef8b944b3ce31a0388ed28935
parent c288d5ba2182a0b2742fa93d04db3e024b00e98e
author Tianjie Xu <xunchang@google.com> 1569868309 -0700
committer Tianjie Xu <xunchang@google.com> 1570213777 +0000

Factor out the RSA verification in payload verifier

Right now, the payload is always signed with a RSA key, and the payload
verifier takes the public key as a PEM encoded string.

As we want to support payload signing with EC keys, we need to figure
out the key types first in the verifier. So, add an overload function in
payload verifier to accept EVP_PKEY as the public key.

Bug: 141244025
Test: unittests pass
Change-Id: Ibbdac5a7a3de48347100861aeac0013bff43da6f