libsrtp2-dev 2.4.2-3 (s390x binary) in ubuntu kinetic

 SRTP is a security profile for RTP
 that adds confidentiality, message authentication, and replay protection
 to that protocol.
 It is specified in RFC 3711.
 .
 LibSRTP provides an implementation
 of the Secure Real-time Transport Protocol (SRTP),
 the Universal Security Transform (UST),
 and a supporting cryptographic kernel.
 .
 This package contains the development headers and static libraries.