Copy the salt before returning it

chris-wood · armfazh · commit 2428169dc9cd · 2022-03-01T11:06:04.000-08:00
diff --git a/blindsign/blindrsa/blindrsa.go b/blindsign/blindrsa/blindrsa.go
@@ -192,7 +192,9 @@ func (state RSAVerifierState) CopyBlind() []byte {
 
 // CopySalt returns an encoding of the per-message salt used in the protocol.
 func (state RSAVerifierState) CopySalt() []byte {
-	return state.salt
+	salt := make([]byte, len(state.salt))
+	copy(salt, state.salt)
+	return salt
 }
 
 // An RSASigner represents the Signer in the blind RSA protocol.

Original file line number	Diff line number	Diff line change
`@@ -192,7 +192,9 @@ func (state RSAVerifierState) CopyBlind() []byte {`
`192`	`192`
`193`	`193`	`// CopySalt returns an encoding of the per-message salt used in the protocol.`
`194`	`194`	`func (state RSAVerifierState) CopySalt() []byte {`
`195`		`- return state.salt`
	`195`	`+ salt := make([]byte, len(state.salt))`
	`196`	`+ copy(salt, state.salt)`
	`197`	`+ return salt`
`196`	`198`	`}`
`197`	`199`
`198`	`200`	`// An RSASigner represents the Signer in the blind RSA protocol.`