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Merge v1.2.1-master

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Signed-off-by: Emile Vauge <emile@vauge.com>
This commit is contained in:
Emile Vauge 2017-04-11 17:10:46 +02:00
parent a590155b0b
commit aeb17182b4
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GPG key ID: D808B4C167352E59
396 changed files with 27271 additions and 9969 deletions
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11
vendor/gopkg.in/square/go-jose.v1/cipher/ecdh_es.go generated vendored
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@ -23,7 +23,14 @@ import (
)
// 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 1<<16")
}
// algId, partyUInfo, partyVInfo inputs must be prefixed with the length
algID := lengthPrefixed([]byte(alg))
ptyUInfo := lengthPrefixed(apuData)
@ -33,6 +40,10 @@ func DeriveECDHES(alg string, apuData, apvData []byte, priv *ecdsa.PrivateKey, p
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{})