diff options
Diffstat (limited to 'packages/taler-util')
-rw-r--r-- | packages/taler-util/src/taler-crypto.ts | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/packages/taler-util/src/taler-crypto.ts b/packages/taler-util/src/taler-crypto.ts index dd8d7dd7b..e3f7d49a8 100644 --- a/packages/taler-util/src/taler-crypto.ts +++ b/packages/taler-util/src/taler-crypto.ts @@ -35,6 +35,8 @@ import { Logger } from "./logging.js"; import { secretbox } from "./nacl-fast.js"; import * as fflate from "fflate"; import { canonicalJson } from "./helpers.js"; +import { TalerProtocolDuration, TalerProtocolTimestamp } from "./time.js"; +import { AmountLike, Amounts } from "./amounts.js"; export type Flavor<T, FlavorT extends string> = T & { _flavor?: `taler.${FlavorT}`; @@ -963,6 +965,7 @@ export enum TalerSignaturePurpose { EXCHANGE_CONFIRM_RECOUP_REFRESH = 1041, TALER_SIGNATURE_AML_DECISION = 1350, TALER_SIGNATURE_AML_QUERY = 1351, + TALER_SIGNATURE_MASTER_AML_KEY = 1017, ANASTASIS_POLICY_UPLOAD = 1400, ANASTASIS_POLICY_DOWNLOAD = 1401, SYNC_BACKUP_UPLOAD = 1450, @@ -1546,3 +1549,61 @@ export async function decryptContractForDeposit( contractTerms: JSON.parse(contractTermsString), }; } + +export function amountToBuffer(amount: AmountLike): Uint8Array { + const amountJ = Amounts.jsonifyAmount(amount); + const buffer = new ArrayBuffer(8 + 4 + 12); + const dvbuf = new DataView(buffer); + const u8buf = new Uint8Array(buffer); + const curr = stringToBytes(amountJ.currency); + if (typeof dvbuf.setBigUint64 !== "undefined") { + dvbuf.setBigUint64(0, BigInt(amountJ.value)); + } else { + const arr = bigint(amountJ.value).toArray(2 ** 8).value; + let offset = 8 - arr.length; + for (let i = 0; i < arr.length; i++) { + dvbuf.setUint8(offset++, arr[i]); + } + } + dvbuf.setUint32(8, amountJ.fraction); + u8buf.set(curr, 8 + 4); + + return u8buf; +} + +export function timestampRoundedToBuffer(ts: TalerProtocolTimestamp): Uint8Array { + const b = new ArrayBuffer(8); + const v = new DataView(b); + // The buffer we sign over represents the timestamp in microseconds. + if (typeof v.setBigUint64 !== "undefined") { + const s = BigInt(ts.t_s) * BigInt(1000 * 1000); + v.setBigUint64(0, s); + } else { + const s = + ts.t_s === "never" ? bigint.zero : bigint(ts.t_s).multiply(1000 * 1000); + const arr = s.toArray(2 ** 8).value; + let offset = 8 - arr.length; + for (let i = 0; i < arr.length; i++) { + v.setUint8(offset++, arr[i]); + } + } + return new Uint8Array(b); +} + +export function durationRoundedToBuffer(ts: TalerProtocolDuration): Uint8Array { + const b = new ArrayBuffer(8); + const v = new DataView(b); + // The buffer we sign over represents the timestamp in microseconds. + if (typeof v.setBigUint64 !== "undefined") { + const s = BigInt(ts.d_us); + v.setBigUint64(0, s); + } else { + const s = ts.d_us === "forever" ? bigint.zero : bigint(ts.d_us); + const arr = s.toArray(2 ** 8).value; + let offset = 8 - arr.length; + for (let i = 0; i < arr.length; i++) { + v.setUint8(offset++, arr[i]); + } + } + return new Uint8Array(b); +} |