ECC NIST P-521 key taken from
https://sites.google.com/site/brainhub/pgpecckeys

The sample key has ECDSA top key 0x6B4184E145AF2FFE and a single ECDH
encryption subkey 0x07EAAA48A81C4838. ECDH subkey uses SHA-512 and
AES-256 with KDF.

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: PGP Command Line v10.0.0 (Linux)
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=5yaB
-----END PGP PUBLIC KEY BLOCK-----