Fix RSASSA-PSS example programs
diff --git a/include/polarssl/rsa.h b/include/polarssl/rsa.h
index 504dde2..d8c8341 100644
--- a/include/polarssl/rsa.h
+++ b/include/polarssl/rsa.h
@@ -128,6 +128,21 @@
int hash_id);
/**
+ * \brief Set padding for an already initialized RSA context
+ *
+ * Note: Set padding to RSA_PKCS_V21 for the RSAES-OAEP
+ * encryption scheme and the RSASSA-PSS signature scheme.
+ *
+ * \param ctx RSA context to be set
+ * \param padding RSA_PKCS_V15 or RSA_PKCS_V21
+ * \param hash_id RSA_PKCS_V21 hash identifier
+ *
+ * \note The hash_id parameter is actually ignored
+ * when using RSA_PKCS_V15 padding.
+ */
+void rsa_set_padding( rsa_context *ctx, int padding, int hash_id);
+
+/**
* \brief Generate an RSA keypair
*
* \param ctx RSA context that will hold the key