golang-golang-x-crypto-dev 1:0.0~git20170629.0.5ef0053-2 (s390x binary) in ubuntu bionic

 This package contains cryptographic algorithms and protocols not packaged in
 the main Go distribution, such as:
 .
  - blowfish
  - nacl
  - openpgp
  - otr
  - sha3
  - ssh
 .
 and many others.