fix(sdk): reject GMAC root signatures on read (DSPX-4703) - #401

Check failure on line 414 in sdk/src/main/java/io/opentdf/platform/sdk/TDF.java

sonarqubecloud / SonarCloud Code Analysis

Refactor this method to reduce its Cognitive Complexity from 19 to the 15 allowed.

See more on https://sonarcloud.io/project/issues?id=opentdf_java-sdk&issues=AaCSJCYanTK7fT8fbld4&open=AaCSJCYanTK7fT8fbld4&pullRequest=401