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

Ledger Internet Computer integration

import { log } from "@ledgerhq/logs";
import { getBufferFromString } from "./common-logic/utils";
import { ICP_SEND_TXN_TYPE } from "./consts";
function bufferToArrayBuffer(buffer) {
    const sig = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
    return Buffer.from(sig);
}
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("Message must be a string");
    const { r } = await signerContext(deviceId, async (signer) => {
        const r = await signer.sign(account.freshAddressPath, getBufferFromString(message), ICP_SEND_TXN_TYPE);
        return { r };
    });
    if (!r.signatureRS) {
        throw Error("Signing failed");
    }
    return {
        rsv: {
            r: "",
            s: "",
            v: 0,
        },
        signature: bufferToArrayBuffer(r.signatureRS).toString("hex"),
    };
};
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