1 files changed, 0 insertions, 62 deletions
diff --git a/vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go b/vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go
deleted file mode 100644
index c128e327f..000000000
--- a/vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go
+++ /dev/null
@@ -1,62 +0,0 @@
-/*-
- * Copyright 2014 Square Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package josecipher
-
-import (
-	"crypto"
-	"crypto/ecdsa"
-	"encoding/binary"
-)
-
-// DeriveECDHES derives a shared encryption key using ECDH/ConcatKDF as described in JWE/JWA.
-// It is an error to call this function with a private/public key that are not on the same
-// curve. Callers must ensure that the keys are valid before calling this function. Output
-// size may be at most 1<<16 bytes (64 KiB).
-func DeriveECDHES(alg string, apuData, apvData []byte, priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey, size int) []byte {
-	if size > 1<<16 {
-		panic("ECDH-ES output size too large, must be less than or equal to 1<<16")
-	}
-
-	// algId, partyUInfo, partyVInfo inputs must be prefixed with the length
-	algID := lengthPrefixed([]byte(alg))
-	ptyUInfo := lengthPrefixed(apuData)
-	ptyVInfo := lengthPrefixed(apvData)
-
-	// suppPubInfo is the encoded length of the output size in bits
-	supPubInfo := make([]byte, 4)
-	binary.BigEndian.PutUint32(supPubInfo, uint32(size)*8)
-
-	if !priv.PublicKey.Curve.IsOnCurve(pub.X, pub.Y) {
-		panic("public key not on same curve as private key")
-	}
-
-	z, _ := priv.PublicKey.Curve.ScalarMult(pub.X, pub.Y, priv.D.Bytes())
-	reader := NewConcatKDF(crypto.SHA256, z.Bytes(), algID, ptyUInfo, ptyVInfo, supPubInfo, []byte{})
-
-	key := make([]byte, size)
-
-	// Read on the KDF will never fail
-	_, _ = reader.Read(key)
-	return key
-}
-
-func lengthPrefixed(data []byte) []byte {
-	out := make([]byte, len(data)+4)
-	binary.BigEndian.PutUint32(out, uint32(len(data)))
-	copy(out[4:], data)
-	return out
-}