diff --git a/packages/taler-wallet-core/src/crypto/cryptoImplementation.ts b/packages/taler-wallet-core/src/crypto/cryptoImplementation.ts
index 76c13bcb4..16d96eaa9 100644
--- a/packages/taler-wallet-core/src/crypto/cryptoImplementation.ts
+++ b/packages/taler-wallet-core/src/crypto/cryptoImplementation.ts
@@ -28,7 +28,6 @@ import {
   AgeCommitmentProof,
   AgeRestriction,
   AmountJson,
-  AmountLike,
   Amounts,
   AmountString,
   amountToBuffer,
@@ -64,7 +63,6 @@ import {
   hashCoinPub,
   hashDenomPub,
   hashTruncate32,
-  j2s,
   kdf,
   kdfKw,
   keyExchangeEcdhEddsa,
@@ -81,16 +79,13 @@ import {
   rsaVerify,
   setupTipPlanchet,
   stringToBytes,
-  TalerProtocolDuration,
   TalerProtocolTimestamp,
   TalerSignaturePurpose,
   timestampRoundedToBuffer,
   UnblindedSignature,
-  validateIban,
   WireFee,
   WithdrawalPlanchet,
 } from "@gnu-taler/taler-util";
-import bigint from "big-integer";
 // FIXME: Crypto should not use DB Types!
 import { DenominationRecord } from "../db.js";
 import {
@@ -108,7 +103,6 @@ import {
   EncryptContractForDepositResponse,
   EncryptContractRequest,
   EncryptContractResponse,
-  EncryptedContract,
   SignDeletePurseRequest,
   SignDeletePurseResponse,
   SignPurseMergeRequest,