getPublicKey
Derives the verifying key (public key) from a private key.
BIP-340 Public Key Format:
32 bytes (x-only public key)
Y-coordinate is implicit (even)
NOT the same as uncompressed secp256k1 public key (33 or 65 bytes)
Usage Example:
val privateKey: ByteArray = ... // 32 bytes from BIP-32
val publicKey = TransactionSigner.getPublicKey(privateKey)
// publicKey is 32 bytes (BIP-340 x-only format)
val address = AddressFormatter.encodeAddress(publicKey)Content copied to clipboard
Return
32-byte BIP-340 public key (x-only), or null on error
Parameters
privateKey
32-byte secp256k1 private key
Throws
if privateKey is not 32 bytes