throw error when attempting to rsa sign w/ public key (segfault previ…

…ously)
vapor · Feb 28, 2018 · e5dbff5 · e5dbff5
1 parent f510082
commit e5dbff5
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/Sources/Crypto/RSA/OpenSSLRSA.swift b/Sources/Crypto/RSA/OpenSSLRSA.swift
@@ -17,6 +17,11 @@ extension RSAHashAlgorithm {
 
 struct OpenSSLRSA {
     static func sign(_ input: Data, for rsa: RSA) throws -> Data {
+        switch rsa.key.type {
+        case .public: throw RSAError(identifier: "sign", reason: "Cannot create RSA signature with a public key. A private key is required.")
+        case .private: break
+        }
+
         let key = try rsa.key.makeOpenSSLKey()
 
         var siglen: UInt32 = 0