Creates an Ethereum account from a given Secp256k1::Key keypair. It creates a random account if no keys are supplied.

Parameters:

• #key (Secp256k1::Key): the Secp256k1 keypair for the account.

prv = Secp256k1::Num.new "d6c8ace470ab0ce03125cac6abf2779c199d21a47d3e75e93c212b1ec23cfe51"
key = Secp256k1::Key.new prv
Ethereum::Account.new key
# => #<Ethereum::Account:0x7fcc10726a60
#         @key=#<Secp256k1::Key:0x7fcc19799ee0
#             @private_key=#<Secp256k1::Num:0x7fcc1979c300
#                 @hex="d6c8ace470ab0ce03125cac6abf2779c199d21a47d3e75e93c212b1ec23cfe51",
#                 @dec=97149512268879514742361644313413872500736768173592718417281501971026009718353,
#                 @bin=Bytes[214, 200, 172, 228, 112, 171, 12, 224, 49, 37, 202, 198, 171, 242, 119, 156, 25, 157, 33, 164, 125, 62, 117, 233, 60, 33, 43, 30, 194, 60, 254, 81]>,
#             @public_key=#<Secp256k1::Point:0x7fcc19799d20
#                 @x=#<Secp256k1::Num:0x7fcc1979c240
#                     @hex="bf0cf8c934bd3c57e962fdf2a47e99d6136b047f987ee2e0cb03110cafd92afc",
#                     @dec=86414673301778591173569328850396232566766657919369855130423318525027519376124,
#                     @bin=Bytes[191, 12, 248, 201, 52, 189, 60, 87, 233, 98, 253, 242, 164, 126, 153, 214, 19, 107, 4, 127, 152, 126, 226, 224, 203, 3, 17, 12, 175, 217, 42, 252]>,
#                 @y=#<Secp256k1::Num:0x7fcc1979c200
#                     @hex="981974428f8162d3f8fce2f58d4e56341478e87d092aeb3a0edf8af97d638d04",
#                     @dec=68796526558321542419405677832866288094027461232937174622925256896107946151172,
#                     @bin=Bytes[152, 25, 116, 66, 143, 129, 98, 211, 248, 252, 226, 245, 141, 78, 86, 52, 20, 120, 232, 125, 9, 42, 235, 58, 14, 223, 138, 249, 125, 99, 141, 4]>>>,
#         @address="0x2Ef1f605AF5d03874eE88773f41c1382ac71C239">

The checksummed Ethereum account address.

The Secp256k1 keypair for the account.