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-rw-r--r--src/pbkdf/pbkdf2/pbkdf2.cpp15
1 files changed, 10 insertions, 5 deletions
diff --git a/src/pbkdf/pbkdf2/pbkdf2.cpp b/src/pbkdf/pbkdf2/pbkdf2.cpp
index e88a5749a..6f6a514f8 100644
--- a/src/pbkdf/pbkdf2/pbkdf2.cpp
+++ b/src/pbkdf/pbkdf2/pbkdf2.cpp
@@ -22,11 +22,16 @@ OctetString PKCS5_PBKDF2::derive_key(u32bit key_len,
if(iterations == 0)
throw Invalid_Argument("PKCS#5 PBKDF2: Invalid iteration count");
- if(passphrase.length() == 0)
- throw Invalid_Argument("PKCS#5 PBKDF2: Empty passphrase is invalid");
-
- mac->set_key(reinterpret_cast<const byte*>(passphrase.data()),
- passphrase.length());
+ try
+ {
+ mac->set_key(reinterpret_cast<const byte*>(passphrase.data()),
+ passphrase.length());
+ }
+ catch(Invalid_Key_Length)
+ {
+ throw Exception(name() + " cannot accept passphrases of length " +
+ to_string(passphrase.length()));
+ }
SecureVector<byte> key(key_len);