Module ec-compression

Elliptic Curve point compression

Decompress a compressed public key in SEC format. See section 2.3.3 in SEC 1 v2

• https://stackoverflow.com/questions/17171542/algorithm-for-elliptic-curve-point-compression/30431547#30431547
• https://github.com/w3c-ccg/did-method-key/issues/32