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crypto/rsa: clarify comment on maximum message length. 

See https://groups.google.com/d/topic/golang-nuts/stbum5gZbAc/discussion

Change-Id: I2e78e8d0dadd78c8b0389514cad3c45d061b663b
Reviewed-on: https://go-review.googlesource.com/29496
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Nigel Tao 2016-09-22 10:58:43 +10:00
parent 9e028b70ea
commit a7dc821d64
1 changed files with 2 additions and 2 deletions
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4
src/crypto/rsa/rsa.go
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@ -362,8 +362,8 @@ func encrypt(c *big.Int, pub *PublicKey, m *big.Int) *big.Int {
// values could be used to ensure that a ciphertext for one purpose cannot be
// used for another by an attacker. If not required it can be empty.
//
// The message must be no longer than the length of the public modulus less
// twice the hash length plus 2.
// The message must be no longer than the length of the public modulus minus
// twice the hash length, minus a further 2.
func EncryptOAEP(hash hash.Hash, random io.Reader, pub *PublicKey, msg []byte, label []byte) ([]byte, error) {
if err := checkPub(pub); err != nil {
return nil, err