EcdsaLib

EcdsaLib

compressPublicKey

function compressPublicKey(bytes32 x, bytes32 y) internal pure returns (bytes)

Converts public key X and Y coordinates (32-byte each) to a compressed public key (33-byte). Compressed public key is X coordinate prefixed with 02 or 03 based on the Y coordinate parity. It is expected that the uncompressed public key is stripped (i.e. it is not prefixed with 04).

Parameters

Name	Type	Description
x	bytes32	Wallet's public key's X coordinate.
y	bytes32	Wallet's public key's Y coordinate.

Return Values

Name	Type	Description
[0]	bytes	Compressed public key (33-byte), prefixed with 02 or 03.