diff options
Diffstat (limited to 'packages/taler-wallet-core/src/crypto/talerCrypto.ts')
-rw-r--r-- | packages/taler-wallet-core/src/crypto/talerCrypto.ts | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/crypto/talerCrypto.ts b/packages/taler-wallet-core/src/crypto/talerCrypto.ts index 8713fc965..4faa523a0 100644 --- a/packages/taler-wallet-core/src/crypto/talerCrypto.ts +++ b/packages/taler-wallet-core/src/crypto/talerCrypto.ts @@ -389,3 +389,19 @@ export function setupRefreshPlanchet( coinPub: eddsaGetPublic(coinPriv), }; } + +export function setupRefreshTransferPub( + secretSeed: Uint8Array, + transferPubIndex: number, +): EcdheKeyPair { + const info = stringToBytes("taler-transfer-pub-derivation"); + const saltArrBuf = new ArrayBuffer(4); + const salt = new Uint8Array(saltArrBuf); + const saltDataView = new DataView(saltArrBuf); + saltDataView.setUint32(0, transferPubIndex); + const out = kdf(32, secretSeed, salt, info); + return { + ecdhePriv: out, + ecdhePub: ecdheGetPublic(out), + }; +} |