Malleable Signature Library (MSSLib) is a Java library (MSS library) and part of the PRISMACLOUD FLEXAUT cryptographic tool that supports various types of malleable signature schemes for controlled modification of signed data and verifiable computations.

(Note: PRISMACLOUD is part of TRUSTEE (daTa pRivacy and cloUd SecuriTy clustEr Europe), a network of 11 research projects funded by the European Union which are all performing cutting-edge research and innovation in different domains of cloud security and privacy, ranging from secure and privacy-friendly authentication over encrypted and distributed solutions for data sharing and cloud storage to data integrity, authenticity, and availability.)