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Add a secure random string generator for par URN generator #258

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Add a secure random string generator for par URN generator #258

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6 changes: 4 additions & 2 deletions ...o2/openbanking/accelerator/push/authorization/endpoint/api/PushAuthorisationEndpoint.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
import org.wso2.carbon.identity.oauth2.bean.OAuthClientAuthnContext;
import org.wso2.carbon.identity.oauth2.model.OAuth2Parameters;

import java.security.SecureRandom;
import java.time.Instant;
import java.util.List;
import java.util.Map;
Expand Down Expand Up @@ -122,8 +123,9 @@ public Response parPost(@Context HttpServletRequest request, @Context HttpServle
requestJWT = paramMap.get(REQUEST).toString();
}

// Generate a urn with cryptographically strong pseudo random algorithm
String urn = RandomStringUtils.randomAlphanumeric(32);
// Generates a "secure" random string with 32 characters only using alphanumeric characters.
String urn = RandomStringUtils.random(32, 0, 0, true, true, null,
new SecureRandom());

OpenBankingConfigurationService openBankingConfigurationService = getOBConfigService();

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