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-rw-r--r--src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp
index 3ff717993..b40fe55cc 100644
--- a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp
+++ b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp
@@ -11,7 +11,8 @@ namespace Botan {
size_t KDF1_18033::kdf(byte key[], size_t key_len,
const byte secret[], size_t secret_len,
- const byte salt[], size_t salt_len) const
+ const byte salt[], size_t salt_len,
+ const byte label[], size_t label_len) const
{
u32bit counter = 0;
secure_vector<byte> h;
@@ -21,6 +22,7 @@ size_t KDF1_18033::kdf(byte key[], size_t key_len,
{
m_hash->update(secret, secret_len);
m_hash->update_be(counter++);
+ m_hash->update(label, label_len);
m_hash->update(salt, salt_len);
m_hash->final(h);