Fix undocumented feature of pem_read_buffer()
Used to work only for RSAPrivateKey content, now accepts ECPrivateKey too,
and may even work with similar enough structures when they appear.
diff --git a/include/polarssl/pem.h b/include/polarssl/pem.h
index 969faa2..782b235 100644
--- a/include/polarssl/pem.h
+++ b/include/polarssl/pem.h
@@ -84,6 +84,9 @@
* POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT, use_len is
* the length to skip)
*
+ * \note Checks password correctness by verifying if the decrypted
+ * text looks like a RSAPrivateKey or ECPrivateKey structure
+ *
* \return 0 on success, ior a specific PEM error code
*/
int pem_read_buffer( pem_context *ctx, const char *header, const char *footer,