Function signEncryptionKey

signEncryptionKey(
encryptionPublicKey: Uint8Array,
signingKey: Uint8Array,
): Uint8Array
Signs an encryption public key with an Ed25519 signing key.

This creates a cryptographic proof that the encryption key belongs to the holder of the Ed25519 private key (Algorand account).
Parameters
- encryptionPublicKey: Uint8Array
  The X25519 public key to sign (32 bytes)
- signingKey: Uint8Array
  The Ed25519 signing key (32 bytes private key)
Returns Uint8Array
The Ed25519 signature (64 bytes)

Throws
If the key lengths are invalid
- Defined in src/crypto/signature.ts:42