github.com/opencoff/sigtool (go): Ed25519 signing, verification and encryption, decryption for arbitary files; like OpenBSD signifiy but with more functionality and written in Golang - only easier and simpler
Keywords: curve25519|digital-signature|ecdh|ecdh-signature|ed25519|elliptic-curve-diffie-hellman|elliptic-curves|encryption-decryption|file-decryption|file-encryption|golang|signature-verification|signify