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ecies: drop randomness parameter from PrivateKey.Decrypt (#16374)

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The parameter `rand` is unused in `PrivateKey.Decrypt`. Decryption in
the ECIES encryption scheme is deterministic, so randomness isn't
needed.
This commit is contained in:
David Huie
2018-03-26 03:46:18 -07:00
committed by Péter Szilágyi
parent e9a1d8de34
commit 23ac783332
5 changed files with 17 additions and 17 deletions
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6
crypto/ecies/ecies.go
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@ -230,7 +230,7 @@ func symEncrypt(rand io.Reader, params *ECIESParams, key, m []byte) (ct []byte,
// symDecrypt carries out CTR decryption using the block cipher specified in
// the parameters
func symDecrypt(rand io.Reader, params *ECIESParams, key, ct []byte) (m []byte, err error) {
func symDecrypt(params *ECIESParams, key, ct []byte) (m []byte, err error) {
c, err := params.Cipher(key)
if err != nil {
return
@ -292,7 +292,7 @@ func Encrypt(rand io.Reader, pub *PublicKey, m, s1, s2 []byte) (ct []byte, err e
}
// Decrypt decrypts an ECIES ciphertext.
func (prv *PrivateKey) Decrypt(rand io.Reader, c, s1, s2 []byte) (m []byte, err error) {
func (prv *PrivateKey) Decrypt(c, s1, s2 []byte) (m []byte, err error) {
if len(c) == 0 {
return nil, ErrInvalidMessage
}
@ -361,6 +361,6 @@ func (prv *PrivateKey) Decrypt(rand io.Reader, c, s1, s2 []byte) (m []byte, err
return
}
m, err = symDecrypt(rand, params, Ke, c[mStart:mEnd])
m, err = symDecrypt(params, Ke, c[mStart:mEnd])
return
}