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-rw-r--r--libqpdf/qpdf/QPDFCrypto_native.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/libqpdf/qpdf/QPDFCrypto_native.hh b/libqpdf/qpdf/QPDFCrypto_native.hh
index ec3cab2b..0beca395 100644
--- a/libqpdf/qpdf/QPDFCrypto_native.hh
+++ b/libqpdf/qpdf/QPDFCrypto_native.hh
@@ -24,7 +24,7 @@ class QPDFCrypto_native: public QPDFCryptoImpl
virtual void RC4_init(unsigned char const* key_data, int key_len = -1);
virtual void RC4_process(
- unsigned char* in_data, size_t len, unsigned char* out_data = 0);
+ unsigned char const* in_data, size_t len, unsigned char* out_data = 0);
virtual void RC4_finalize();
virtual void SHA2_init(int bits);