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packages/lit-node-client-nodejs/src/lib/lit-node-client-nodejs.ts

Lines changed: 34 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -135,7 +135,8 @@ import type {
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export class LitNodeClientNodeJs
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extends LitCore
138-
implements LitClientSessionManager, ILitNodeClient {
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implements LitClientSessionManager, ILitNodeClient
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{
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defaultAuthCallback?: (authSigParams: AuthCallbackParams) => Promise<AuthSig>;
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// ========== Constructor ==========
@@ -1292,8 +1293,8 @@ export class LitNodeClientNodeJs
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// -- optional params
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...(params.authMethods &&
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params.authMethods.length > 0 && {
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authMethods: params.authMethods,
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}),
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authMethods: params.authMethods,
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}),
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};
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logWithRequestId(requestId, 'reqBody:', reqBody);
@@ -2065,30 +2066,30 @@ export class LitNodeClientNodeJs
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};
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/**
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*
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* Retrieves or generates sessionSigs (think access token) for accessing Lit Network resources.
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*
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* How this function works on a high level:
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* 1. Generate or retrieve [session keys](https://v6-api-doc-lit-js-sdk.vercel.app/interfaces/types_src.SessionKeyPair.html) (a public and private key pair)
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* 2. Generate or retrieve the [`AuthSig`](https://v6-api-doc-lit-js-sdk.vercel.app/interfaces/types_src.AuthSig.html) that specifies the session [abilities](https://v6-api-doc-lit-js-sdk.vercel.app/enums/auth_helpers_src.LitAbility.html)
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* 3. Sign the specific resources with the session key
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*
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* The process follows these steps:
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* 1. Retrieves or generates a session key pair (Ed25519) for the user's device. The session key is either fetched from local storage or newly created if not found. The key does not expire.
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* 2. Generates an authentication signature (`authSig`) by signing an ERC-5573 “Sign-in with Ethereum” message, which includes resource ability requests, capabilities, expiration, the user's device session public key, and a nonce. The `authSig` is retrieved from local storage, and if it has expired, the user will be prompted to re-sign.
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* 3. Uses the session private key to sign the session public key along with the resource ability requests, capabilities, issuedAt, and expiration details. This creates a device-generated signature.
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* 4. Constructs the session signatures (`sessionSigs`) by including the device-generated signature and the original message. The `sessionSigs` provide access to Lit Network features such as `executeJs` and `pkpSign`.
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*
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* See Sequence Diagram: https://www.plantuml.com/plantuml/uml/VPH1RnCn48Nl_XLFlT1Av00eGkm15QKLWY8K9K9SO-rEar4sjcLFalBl6NjJAuaMRl5utfjlPjQvJsAZx7UziQtuY5-9eWaQufQ3TOAR77cJy407Rka6zlNdHTRouUbIzSEtjiTIBUswg5v_NwMnuAVlA9KKFPN3I0x9qSSj7bqNF3iPykl9c4o9oUSJMuElv2XQ8IHAYRt3bluWM8wuVUpUJwVlFjsP8JUh5B_1DyV2AYdD6DjhLsTQTaYd3W3ad28SGWqM997fG5ZrB9DJqOaALuRwH1TMpik8tIYze-E8OrPKU5I6cMqtem2kCqOhr4vdaRAvtSjcoMkTo68scKu_Vi1EPMfrP_xVtj7sFMaHNg-6GVqk0MW0z18uKdVULTvDWtdqko28b7KktvUB2hKOBd1asU2QgDfTzrj7T4bLPdv6TR0zLwPQKkkZpIRTY4CTMbrBpg_VKuXyi49beUAHqIlirOUrL2zq9JPPdpRR5OMLVQGoGlLcjyRyQNv6MHz4W_fG42W--xWhUfNyOxiLL1USS6lRLeyAkYLNjrkVJuClm_qp5I8Lq0krUw7lwIt2DgY9oiozrjA_Yhy0
2083-
*
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* Note: When generating session signatures for different PKPs or auth methods,
2085-
* be sure to call disconnectWeb3 to clear auth signatures stored in local storage
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*
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* @param { GetSessionSigsProps } params
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*
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* An example of how this function is used can be found in the Lit developer-guides-code repository [here](https://github.com/LIT-Protocol/developer-guides-code/tree/master/session-signatures/getSessionSigs).
2090-
*
2091-
*/
2069+
*
2070+
* Retrieves or generates sessionSigs (think access token) for accessing Lit Network resources.
2071+
*
2072+
* How this function works on a high level:
2073+
* 1. Generate or retrieve [session keys](https://v6-api-doc-lit-js-sdk.vercel.app/interfaces/types_src.SessionKeyPair.html) (a public and private key pair)
2074+
* 2. Generate or retrieve the [`AuthSig`](https://v6-api-doc-lit-js-sdk.vercel.app/interfaces/types_src.AuthSig.html) that specifies the session [abilities](https://v6-api-doc-lit-js-sdk.vercel.app/enums/auth_helpers_src.LitAbility.html)
2075+
* 3. Sign the specific resources with the session key
2076+
*
2077+
* The process follows these steps:
2078+
* 1. Retrieves or generates a session key pair (Ed25519) for the user's device. The session key is either fetched from local storage or newly created if not found. The key does not expire.
2079+
* 2. Generates an authentication signature (`authSig`) by signing an ERC-5573 “Sign-in with Ethereum” message, which includes resource ability requests, capabilities, expiration, the user's device session public key, and a nonce. The `authSig` is retrieved from local storage, and if it has expired, the user will be prompted to re-sign.
2080+
* 3. Uses the session private key to sign the session public key along with the resource ability requests, capabilities, issuedAt, and expiration details. This creates a device-generated signature.
2081+
* 4. Constructs the session signatures (`sessionSigs`) by including the device-generated signature and the original message. The `sessionSigs` provide access to Lit Network features such as `executeJs` and `pkpSign`.
2082+
*
2083+
* See Sequence Diagram: https://www.plantuml.com/plantuml/uml/VPH1RnCn48Nl_XLFlT1Av00eGkm15QKLWY8K9K9SO-rEar4sjcLFalBl6NjJAuaMRl5utfjlPjQvJsAZx7UziQtuY5-9eWaQufQ3TOAR77cJy407Rka6zlNdHTRouUbIzSEtjiTIBUswg5v_NwMnuAVlA9KKFPN3I0x9qSSj7bqNF3iPykl9c4o9oUSJMuElv2XQ8IHAYRt3bluWM8wuVUpUJwVlFjsP8JUh5B_1DyV2AYdD6DjhLsTQTaYd3W3ad28SGWqM997fG5ZrB9DJqOaALuRwH1TMpik8tIYze-E8OrPKU5I6cMqtem2kCqOhr4vdaRAvtSjcoMkTo68scKu_Vi1EPMfrP_xVtj7sFMaHNg-6GVqk0MW0z18uKdVULTvDWtdqko28b7KktvUB2hKOBd1asU2QgDfTzrj7T4bLPdv6TR0zLwPQKkkZpIRTY4CTMbrBpg_VKuXyi49beUAHqIlirOUrL2zq9JPPdpRR5OMLVQGoGlLcjyRyQNv6MHz4W_fG42W--xWhUfNyOxiLL1USS6lRLeyAkYLNjrkVJuClm_qp5I8Lq0krUw7lwIt2DgY9oiozrjA_Yhy0
2084+
*
2085+
* Note: When generating session signatures for different PKPs or auth methods,
2086+
* be sure to call disconnectWeb3 to clear auth signatures stored in local storage
2087+
*
2088+
* @param { GetSessionSigsProps } params
2089+
*
2090+
* An example of how this function is used can be found in the Lit developer-guides-code repository [here](https://github.com/LIT-Protocol/developer-guides-code/tree/master/session-signatures/getSessionSigs).
2091+
*
2092+
*/
20922093
getSessionSigs = async (
20932094
params: GetSessionSigsProps
20942095
): Promise<SessionSigsMap> => {
@@ -2102,8 +2103,8 @@ export class LitNodeClientNodeJs
21022103
const sessionCapabilityObject = params.sessionCapabilityObject
21032104
? params.sessionCapabilityObject
21042105
: await this.generateSessionCapabilityObjectWithWildcards(
2105-
params.resourceAbilityRequests.map((r) => r.resource)
2106-
);
2106+
params.resourceAbilityRequests.map((r) => r.resource)
2107+
);
21072108
const expiration = params.expiration || LitNodeClientNodeJs.getExpiration();
21082109

21092110
// -- (TRY) to get the wallet signature
@@ -2186,10 +2187,10 @@ export class LitNodeClientNodeJs
21862187

21872188
const capabilities = params.capacityDelegationAuthSig
21882189
? [
2189-
...(params.capabilityAuthSigs ?? []),
2190-
params.capacityDelegationAuthSig,
2191-
authSig,
2192-
]
2190+
...(params.capabilityAuthSigs ?? []),
2191+
params.capacityDelegationAuthSig,
2192+
authSig,
2193+
]
21932194
: [...(params.capabilityAuthSigs ?? []), authSig];
21942195

21952196
const signingTemplate = {

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