tree 94eb9eea31ffa0429b3d0d891efc96217b5f0899
parent 1c4bb0ec589c51dbe2a9d49448ff8a7124f52135
author Prashant Patil <patilprashant@google.com> 1659528721 +0000
committer Prashant Patil <patilprashant@google.com> 1668437475 +0000

KeyStore: X25519 key import

Added a KeyAgreement algorithm for X25519(XDH) in KeyProperties.
KM_ALGORITHM_EC is used for XDH because Keymint uses KM_ALGORITHM_EC along
with Curve25519 to differentiate X25519 and other EC keys.

Algorithm name XDH is set for X25519 private key.

Consilidated methods of Keymaster specific conversions of EC_CURVE into
KeymasterUtil.

Bug: 240682299
Test: run cts -m CtsKeystoreTestCases -t android.keystore.cts.Curve25519Test#x25519KeyImportAndAgreementTest
Change-Id: I3f95738194e62be0f1d821b1eb467ed810a5a175