oAuth JWT Bearer Grant Type Integration Setup - Support and Troubleshooting

oAuth JWT Bearer Grant Type Integration Setup Issue JWT (JSON Web Token) Grant type will provide capabilities to do server-to-server API interactions between Service Now and External API providers without requiring any user intervention.

Procedure Upload jks which has jwt signing key in sys certificate.Java keystore with a signing key ( Private-Public key pair ) is generated by customer. Use the below command in the terminal to generate a java keystore with a self signed certificate. keytool -genkey -alias snclient -keyalg RSA -validity 365 -keystore jwtdemo.keystore -storepass jwtdemo -keypass jwtdemo

Create a JWT Signing key and assign corresponding signing jks

Create jwt provider with required claims and assign jwt signing key.It is recommended to check with the vendor to know the mandatory claims for the API.

Create a 3rd party Oauth provider in Application Registry. Configure JWT Provider and Signing Keys in ServiceNow.

Open oauth entity profile record and assign a jwt provider .

Test oAuth Provide r via Scripts Background var tokenRequest = new sn_auth.GlideOAuthClientRequest(); tokenRequest.setGrantType(" urn:ietf:params:oauth:grant-type:jwt-bearer "); tokenRequest.setRequestor("someone@someemail.com");

var oAuthClient = new sn_auth.GlideOAuthClient(); var tokenResponse = oAuthClient.requestTokenByRequest(" box_demo ", tokenRequest); gs.info("Error:" + tokenResponse.getErrorMessage());

var token = tokenResponse.getToken(); dumpToken(token);

function dumpToken(token) { if(token) { gs.info("AccessToken:" + token.getAccessToken()); gs.info("AccessTokenExpiresIn:" + token.getExpiresIn()); } } Output:

Getting JWTProvider for jwtProviderSysId = e4967691dbf92300980c90b6db96190d Auth com.snc.platform.security.oauth.jwt.JWTProvider@1219a82 Auth Cache miss, got jwtProvider from GlideRecord and put in cache Getting JWTProviderConfig for jwtProviderId = e4967691dbf92300980c90b6db96190d Auth Cache hit. Getting JWTProviderConfiguration from cache Started to generate JWT AuthAdding payload claims to jwt with name = box_sub_type and value = enterprise AuthAdding payload claims to jwt with name = aud and value = https://api.box.com/oauth2/token AuthAdding payload claims to jwt with name = sub and value = 120961449 AuthAdding payload claims to jwt with name = iss and value = o9xqbay28g97deumamwz2s0tvtsfrusb AuthAdding claims to jwt. Header Claims = [], keyId = , issuedAt = Thu Nov 15 14:36:21 PST 2018, expiresAt = Thu Nov 15 14:37:21 PST 2018, issuer = o9xqbay28g97deumamwz2s0tvtsfrusb, notBefore = null, signingAlgorithms=RS256, jwtId=4370d0df-a37e-4c31-a667-308acb6ac9ce Successfully generated JWT OAUTH - OAuthHTTPRequest : Sending http request, url :https://api.box.com/oauth2/token OAUTH - OAuthHTTPRequest : Sending http request, body :grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&assertion=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJhdWQiOiJodHRwczovL2FwaS5ib3guY29tL29hdXRoMi90b2tlbiIsInN1YiI6IjEyMDk2MTQ0OSIsImJveF9zdWJfdHlwZSI6ImVudGVycHJpc2UiLCJpc3MiOiJvOXhxYmF5MjhnOTdkZXVtYW13ejJzMHR2dHNmcnVzYiIsImV4cCI6MTU0MjMyMTQ0MSwiaWF0IjoxNTQyMzIxMzgxLCJqdGkiOiI0MzcwZDBkZi1hMzdlLTRjMzEtYTY2Ny0zMDhhY2I2YWM5Y2UifQ.G_D4Xbmiml7D2n2pmApXq04npyqhwJ2i78SJeg45k5f1fBBhw4oIjeHH5-En2lawByEuRWjopViM25zXs57E-4DnDzTkJvJnWiHG0oKQdZlcf9EcfWUS2z7tfIvSmI1m_JiepQoQQXWR9eVrwnR0y_-n_K6Qt3C1CUIpY3X7t23gyDEn1D2XVs-WDo_1GZ29YQnVxzQOmcPQafN5oQ8st7dJkv21o71elWU0-pn_34rbx_uJvc80uC-t8PZtNbvuFNYpXNFbu0AC5_QcJ5ZlQFwwO7RofiOSRi25Uq0SoJ_JsfBtlas3iBMFbmDd0i81g4C9ljEOrnF1dhn3ttdQ4A&client_secret=DRcW5sBRcuy4jDqryIoPB5BhCw7h1QzL&client_id=o9xqbay28g97deumamwz2s0tvtsfrusb SecurityUtils: Obfuscating Key : access_token and all its children! OAUTH - OAuthHTTPRequest : Received http response: {"access_token":"********","token_type":"bearer","expires_in":3899,"restricted_to":[]} *** Script: Error:null *** Script: AccessToken : 1xyzIxLg8JhFroarvBVCa4XgghdbZ5Eo *** Script: AccessTokenExpiresIn:3899 *** Script: RefreshToken:null Release Madrid

Related Links JSON Web Token (JWT) Profile for OAuth 2.0 Client Authentication and Authorization Grants: https://tools.ietf.org/html/rfc7523 oAuth2.0 JWT Bearer Grant Flow - Use the below article to understand JWT Bearer Grant Flow https://help.salesforce.com/articleView?id=remoteaccess_oauth_jwt_flow.htm&type=5 https://docs.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-on-behalf-of-flow