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This commit is contained in:
Wade Simmons 2025-07-25 14:32:37 -04:00
parent f6b206d96c
commit 0eb92dcab4
3 changed files with 56 additions and 26 deletions
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8
.github/workflows/smoke.yml vendored
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@ -52,4 +52,12 @@ jobs:
working-directory: ./.github/workflows/smoke
run: NAME="smoke-p256" ./smoke.sh
- name: setup docker image for fips140
working-directory: ./.github/workflows/smoke
run: NAME="smoke-fips140" CURVE=P256 GOFIPS140=v1.0.0 LDFLAGS=-checklinkname=0 ./build.sh
- name: run smoke-fips140
working-directory: ./.github/workflows/smoke
run: NAME="smoke-fips140" ./smoke.sh
timeout-minutes: 10

55
noise.go
View File

@ -25,6 +25,11 @@ func NewNebulaCipherState(s *noise.CipherState) *NebulaCipherState {
}
type cipherAEADDanger interface {
EncryptDanger(out, ad, plaintext []byte, n uint64, nb []byte) ([]byte, error)
DecryptDanger(out, ad, plaintext []byte, n uint64, nb []byte) ([]byte, error)
}
// EncryptDanger encrypts and authenticates a given payload.
//
// out is a destination slice to hold the output of the EncryptDanger operation.
@ -35,20 +40,25 @@ func NewNebulaCipherState(s *noise.CipherState) *NebulaCipherState {
// be re-used by callers to minimize garbage collection.
func (s *NebulaCipherState) EncryptDanger(out, ad, plaintext []byte, n uint64, nb []byte) ([]byte, error) {
if s != nil {
// TODO: Is this okay now that we have made messageCounter atomic?
// Alternative may be to split the counter space into ranges
//if n <= s.n {
// return nil, errors.New("CRITICAL: a duplicate counter value was used")
//}
//s.n = n
nb[0] = 0
nb[1] = 0
nb[2] = 0
nb[3] = 0
noiseEndianness.PutUint64(nb[4:], n)
out = s.c.(cipher.AEAD).Seal(out, nb, plaintext, ad)
//l.Debugf("Encryption: outlen: %d, nonce: %d, ad: %s, plainlen %d", len(out), n, ad, len(plaintext))
return out, nil
switch ce := s.c.(type) {
case cipherAEADDanger:
return ce.EncryptDanger(out, ad, plaintext, n, nb)
default:
// TODO: Is this okay now that we have made messageCounter atomic?
// Alternative may be to split the counter space into ranges
//if n <= s.n {
// return nil, errors.New("CRITICAL: a duplicate counter value was used")
//}
//s.n = n
nb[0] = 0
nb[1] = 0
nb[2] = 0
nb[3] = 0
noiseEndianness.PutUint64(nb[4:], n)
out = s.c.(cipher.AEAD).Seal(out, nb, plaintext, ad)
//l.Debugf("Encryption: outlen: %d, nonce: %d, ad: %s, plainlen %d", len(out), n, ad, len(plaintext))
return out, nil
}
} else {
return nil, errors.New("no cipher state available to encrypt")
}
@ -56,12 +66,17 @@ func (s *NebulaCipherState) EncryptDanger(out, ad, plaintext []byte, n uint64, n
func (s *NebulaCipherState) DecryptDanger(out, ad, ciphertext []byte, n uint64, nb []byte) ([]byte, error) {
if s != nil {
nb[0] = 0
nb[1] = 0
nb[2] = 0
nb[3] = 0
noiseEndianness.PutUint64(nb[4:], n)
return s.c.(cipher.AEAD).Open(out, nb, ciphertext, ad)
switch ce := s.c.(type) {
case cipherAEADDanger:
return ce.DecryptDanger(out, ad, ciphertext, n, nb)
default:
nb[0] = 0
nb[1] = 0
nb[2] = 0
nb[3] = 0
noiseEndianness.PutUint64(nb[4:], n)
return s.c.(cipher.AEAD).Open(out, nb, ciphertext, ad)
}
} else {
return []byte{}, nil
}

19
noiseutil/fips140.go
View File

@ -40,16 +40,12 @@ var CipherAESGCM noise.CipherFunc = cipherFn{cipherAESGCM, "AESGCM"}
var emptyPrefix = []byte{0, 0, 0, 0}
func cipherAESGCM(k [32]byte) noise.Cipher {
// c, err := aes.NewCipher(k[:])
// if err != nil {
// panic(err)
// }
gcm := aeadAESGCM(k[:], emptyPrefix)
return aeadCipher{
gcm,
func(n uint64) []byte {
var nonce [12]byte
binary.BigEndian.PutUint64(nonce[4:], n)
var nonce [8]byte
binary.BigEndian.PutUint64(nonce[:], n)
return nonce[:]
},
}
@ -67,3 +63,14 @@ func (c aeadCipher) Encrypt(out []byte, n uint64, ad, plaintext []byte) []byte {
func (c aeadCipher) Decrypt(out []byte, n uint64, ad, ciphertext []byte) ([]byte, error) {
return c.Open(out, c.nonce(n), ciphertext, ad)
}
func (c aeadCipher) EncryptDanger(out, ad, plaintext []byte, n uint64, nb []byte) ([]byte, error) {
binary.BigEndian.PutUint64(nb[4:], n)
out = c.Seal(out, nb[4:], plaintext, ad)
return out, nil
}
func (c aeadCipher) DecryptDanger(out, ad, ciphertext []byte, n uint64, nb []byte) ([]byte, error) {
binary.BigEndian.PutUint64(nb[4:], n)
return c.Open(out, nb[4:], ciphertext, ad)
}