@ledgerhq/coin-casper/lib-es/hw-signMessage.js

Ledger Casper integration

import { log } from "@ledgerhq/logs";
import { getBufferFromString } from "./common-logic/utils";
export const signMessage = (signerContext) => async (deviceId, account, { message }) => {
    log("debug", "start signMessage process");
    if (!message)
        throw new Error(`Message cannot be empty`);
    if (typeof message !== "string")
        throw new Error(`Signing EIP712Message not supported`);
    const r = await signerContext(deviceId, async (signer) => await signer.sign(account.freshAddressPath, getBufferFromString(message)));
    return {
        rsv: {
            r: Buffer.from(r.signature_compact.slice(0, 32)).toString("hex"),
            s: Buffer.from(r.signature_compact.slice(32, 64)).toString("hex"),
            v: parseInt(Buffer.from(r.signature_compact.slice(64, 65)).toString("hex"), 16),
        },
        signature: `0x${Buffer.from(r.signature_compact).toString("hex")}`,
    };
};
export default { signMessage };
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