Open source license and copyright information tampering detection method and system

The invention provides an open source license and copyright information tampering detection method and system. The detection method comprises the steps: building a homologous analysis feature knowledge base; matching the feature information of the to-be-detected file with feature information in a homologous analysis feature knowledge base, and judging whether the to-be-detected file has a homologous relationship with files in the feature information knowledge base or not; and under the condition that the to-be-detected file is judged to have the homologous relationship file, recording the homologous relationship file, performing matching verification on the license and the copyright information of the to-be-detected file and the license and the copyright information of the homologous relationship file, and judging whether the license and the copyright information in the to-be-detected file are tampered, deleted and newly added or not. According to the open source license and copyright information tampering de