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Add support for "hmac-sha2-512-etm@openssh.com" #129

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2 changes: 1 addition & 1 deletion ssh/common.go
Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@ var supportedHostKeyAlgos = []string{
// This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed
// because they have reached the end of their useful life.
var supportedMACs = []string{
"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96",
"hmac-sha2-512-etm@openssh.com", "hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96",
}

var supportedCompressions = []string{compressionNone}
Expand Down
4 changes: 4 additions & 0 deletions ssh/mac.go
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import (
"crypto/hmac"
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"hash"
)

Expand Down Expand Up @@ -46,6 +47,9 @@ func (t truncatingMAC) Size() int {
func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() }

var macModes = map[string]*macMode{
"hmac-sha2-512-etm@openssh.com": {64, true, func(key []byte) hash.Hash {
return hmac.New(sha512.New, key)
}},
"hmac-sha2-256-etm@openssh.com": {32, true, func(key []byte) hash.Hash {
return hmac.New(sha256.New, key)
}},
Expand Down