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Signed-off-by: Mirko Mollik <mirko.mollik@fit.fraunhofer.de>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| export * from './status-list.js'; | ||
| export * from './status-list-jwt.js'; | ||
| export * from './types.js'; | ||
| export * from './status-list'; | ||
| export * from './status-list-jwt'; | ||
| export * from './types'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,138 +1,4 @@ | ||
| import { Jwt, SDJwtInstance } from '@sd-jwt/core'; | ||
| import type { DisclosureFrame, Verifier } from '@sd-jwt/types'; | ||
| import { SDJWTException } from '../../utils/dist'; | ||
| import type { SdJwtVcPayload } from './sd-jwt-vc-payload'; | ||
| import type { SDJWTVCConfig } from './sd-jwt-vc-config'; | ||
| import { | ||
| type StatusListJWTHeaderParameters, | ||
| type StatusListJWTPayload, | ||
| getListFromStatusListJWT, | ||
| } from '@sd-jwt/jwt-status-list'; | ||
| export class SDJwtVcInstance extends SDJwtInstance<SdJwtVcPayload> { | ||
| /** | ||
| * The type of the SD-JWT-VC set in the header.typ field. | ||
| */ | ||
| protected type = 'vc+sd-jwt'; | ||
|
|
||
| protected userConfig: SDJWTVCConfig = {}; | ||
|
|
||
| constructor(userConfig?: SDJWTVCConfig) { | ||
| super(userConfig); | ||
| if (userConfig) { | ||
| this.userConfig = userConfig; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Validates if the disclosureFrame contains any reserved fields. If so it will throw an error. | ||
| * @param disclosureFrame | ||
| */ | ||
| protected validateReservedFields( | ||
| disclosureFrame: DisclosureFrame<SdJwtVcPayload>, | ||
| ): void { | ||
| //validate disclosureFrame according to https://www.ietf.org/archive/id/draft-ietf-oauth-sd-jwt-vc-03.html#section-3.2.2.2 | ||
| if ( | ||
| disclosureFrame?._sd && | ||
| Array.isArray(disclosureFrame._sd) && | ||
| disclosureFrame._sd.length > 0 | ||
| ) { | ||
| const reservedNames = ['iss', 'nbf', 'exp', 'cnf', 'vct', 'status']; | ||
| // check if there is any reserved names in the disclosureFrame._sd array | ||
| const reservedNamesInDisclosureFrame = ( | ||
| disclosureFrame._sd as string[] | ||
| ).filter((key) => reservedNames.includes(key)); | ||
| if (reservedNamesInDisclosureFrame.length > 0) { | ||
| throw new SDJWTException('Cannot disclose protected field'); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Fetches the status list from the uri with a timeout of 10 seconds. | ||
| * @param uri The URI to fetch from. | ||
| * @returns A promise that resolves to a compact JWT. | ||
| */ | ||
| private async statusListFetcher(uri: string): Promise<string> { | ||
| const controller = new AbortController(); | ||
| const timeoutId = setTimeout(() => controller.abort(), 10000); | ||
|
|
||
| try { | ||
| const response = await fetch(uri, { signal: controller.signal }); | ||
| if (!response.ok) { | ||
| throw new Error( | ||
| `Error fetching status list: ${ | ||
| response.status | ||
| } ${await response.text()}`, | ||
| ); | ||
| } | ||
|
|
||
| return response.text(); | ||
| } finally { | ||
| clearTimeout(timeoutId); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Validates the status, throws an error if the status is not 0. | ||
| * @param status | ||
| * @returns | ||
| */ | ||
| private async statusValidator(status: number): Promise<void> { | ||
| if (status !== 0) throw new SDJWTException('Status is not valid'); | ||
| return Promise.resolve(); | ||
| } | ||
|
|
||
| /** | ||
| * Verifies the SD-JWT-VC. | ||
| */ | ||
| async verify( | ||
| encodedSDJwt: string, | ||
| requiredClaimKeys?: string[], | ||
| requireKeyBindings?: boolean, | ||
| ) { | ||
| // Call the parent class's verify method | ||
| const result = await super | ||
| .verify(encodedSDJwt, requiredClaimKeys, requireKeyBindings) | ||
| .then((res) => { | ||
| return { payload: res.payload as SdJwtVcPayload, header: res.header }; | ||
| }); | ||
|
|
||
| if (result.payload.status) { | ||
| //checks if a status field is present in the payload based on https://www.ietf.org/archive/id/draft-ietf-oauth-status-list-02.html | ||
| if (result.payload.status.status_list) { | ||
| // fetch the status list from the uri | ||
| const fetcher = | ||
| this.userConfig.statusListFetcher ?? this.statusListFetcher; | ||
| // fetch the status list from the uri | ||
| const statusListJWT = await fetcher( | ||
| result.payload.status.status_list.uri, | ||
| ); | ||
|
|
||
| const slJWT = Jwt.fromEncode< | ||
| StatusListJWTHeaderParameters, | ||
| StatusListJWTPayload | ||
| >(statusListJWT); | ||
| // check if the status list has a valid signature. The presence of the verifier is checked in the parent class. | ||
| await slJWT.verify(this.userConfig.verifier as Verifier); | ||
|
|
||
| //check if the status list is expired | ||
| if (slJWT.payload?.exp && slJWT.payload.exp < Date.now() / 1000) { | ||
| throw new SDJWTException('Status list is expired'); | ||
| } | ||
|
|
||
| // get the status list from the status list JWT | ||
| const statusList = getListFromStatusListJWT(statusListJWT); | ||
| const status = statusList.getStatus( | ||
| result.payload.status.status_list.idx, | ||
| ); | ||
|
|
||
| // validate the status | ||
| const statusValidator = | ||
| this.userConfig.statusValidator ?? this.statusValidator; | ||
| await statusValidator(status); | ||
| } | ||
| } | ||
|
|
||
| return result; | ||
| } | ||
| } | ||
| export * from './sd-jwt-vc-config'; | ||
| export * from './sd-jwt-vc-instance'; | ||
| export * from './sd-jwt-vc-payload'; | ||
| export * from './sd-jwt-vc-status-reference'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| import { Jwt, SDJwtInstance } from '@sd-jwt/core'; | ||
| import type { DisclosureFrame, Verifier } from '@sd-jwt/types'; | ||
| import { SDJWTException } from '@sd-jwt/utils'; | ||
| import type { SdJwtVcPayload } from './sd-jwt-vc-payload'; | ||
| import type { SDJWTVCConfig } from './sd-jwt-vc-config'; | ||
| import { | ||
| type StatusListJWTPayload, | ||
| getListFromStatusListJWT, | ||
| } from '@sd-jwt/jwt-status-list'; | ||
| import type { StatusListJWTHeaderParameters } from '@sd-jwt/jwt-status-list'; | ||
| export class SDJwtVcInstance extends SDJwtInstance<SdJwtVcPayload> { | ||
| /** | ||
| * The type of the SD-JWT-VC set in the header.typ field. | ||
| */ | ||
| protected type = 'vc+sd-jwt'; | ||
|
|
||
| protected userConfig: SDJWTVCConfig = {}; | ||
|
|
||
| constructor(userConfig?: SDJWTVCConfig) { | ||
| super(userConfig); | ||
| if (userConfig) { | ||
| this.userConfig = userConfig; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Validates if the disclosureFrame contains any reserved fields. If so it will throw an error. | ||
| * @param disclosureFrame | ||
| */ | ||
| protected validateReservedFields( | ||
| disclosureFrame: DisclosureFrame<SdJwtVcPayload>, | ||
| ): void { | ||
| //validate disclosureFrame according to https://www.ietf.org/archive/id/draft-ietf-oauth-sd-jwt-vc-03.html#section-3.2.2.2 | ||
| if ( | ||
| disclosureFrame?._sd && | ||
| Array.isArray(disclosureFrame._sd) && | ||
| disclosureFrame._sd.length > 0 | ||
| ) { | ||
| const reservedNames = ['iss', 'nbf', 'exp', 'cnf', 'vct', 'status']; | ||
| // check if there is any reserved names in the disclosureFrame._sd array | ||
| const reservedNamesInDisclosureFrame = ( | ||
| disclosureFrame._sd as string[] | ||
| ).filter((key) => reservedNames.includes(key)); | ||
| if (reservedNamesInDisclosureFrame.length > 0) { | ||
| throw new SDJWTException('Cannot disclose protected field'); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Fetches the status list from the uri with a timeout of 10 seconds. | ||
| * @param uri The URI to fetch from. | ||
| * @returns A promise that resolves to a compact JWT. | ||
| */ | ||
| private async statusListFetcher(uri: string): Promise<string> { | ||
| const controller = new AbortController(); | ||
| const timeoutId = setTimeout(() => controller.abort(), 10000); | ||
|
|
||
| try { | ||
| const response = await fetch(uri, { signal: controller.signal }); | ||
| if (!response.ok) { | ||
| throw new Error( | ||
| `Error fetching status list: ${ | ||
| response.status | ||
| } ${await response.text()}`, | ||
| ); | ||
| } | ||
|
|
||
| return response.text(); | ||
| } finally { | ||
| clearTimeout(timeoutId); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Validates the status, throws an error if the status is not 0. | ||
| * @param status | ||
| * @returns | ||
| */ | ||
| private async statusValidator(status: number): Promise<void> { | ||
| if (status !== 0) throw new SDJWTException('Status is not valid'); | ||
| return Promise.resolve(); | ||
| } | ||
|
|
||
| /** | ||
| * Verifies the SD-JWT-VC. | ||
| */ | ||
| async verify( | ||
| encodedSDJwt: string, | ||
| requiredClaimKeys?: string[], | ||
| requireKeyBindings?: boolean, | ||
| ) { | ||
| // Call the parent class's verify method | ||
| const result = await super | ||
| .verify(encodedSDJwt, requiredClaimKeys, requireKeyBindings) | ||
| .then((res) => { | ||
| return { payload: res.payload as SdJwtVcPayload, header: res.header }; | ||
| }); | ||
|
|
||
| if (result.payload.status) { | ||
| //checks if a status field is present in the payload based on https://www.ietf.org/archive/id/draft-ietf-oauth-status-list-02.html | ||
| if (result.payload.status.status_list) { | ||
| // fetch the status list from the uri | ||
| const fetcher = | ||
| this.userConfig.statusListFetcher ?? this.statusListFetcher; | ||
| // fetch the status list from the uri | ||
| const statusListJWT = await fetcher( | ||
| result.payload.status.status_list.uri, | ||
| ); | ||
|
|
||
| const slJWT = Jwt.fromEncode< | ||
| StatusListJWTHeaderParameters, | ||
| StatusListJWTPayload | ||
| >(statusListJWT); | ||
| // check if the status list has a valid signature. The presence of the verifier is checked in the parent class. | ||
| await slJWT.verify(this.userConfig.verifier as Verifier); | ||
|
|
||
| //check if the status list is expired | ||
| if ( | ||
| slJWT.payload?.exp && | ||
| (slJWT.payload.exp as number) < Date.now() / 1000 | ||
| ) { | ||
| throw new SDJWTException('Status list is expired'); | ||
| } | ||
|
|
||
| // get the status list from the status list JWT | ||
| const statusList = getListFromStatusListJWT(statusListJWT); | ||
| const status = statusList.getStatus( | ||
| result.payload.status.status_list.idx, | ||
| ); | ||
|
|
||
| // validate the status | ||
| const statusValidator = | ||
| this.userConfig.statusValidator ?? this.statusValidator; | ||
| await statusValidator(status); | ||
| } | ||
| } | ||
|
|
||
| return result; | ||
| } | ||
| } |
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