diff --git a/include/qpdf/QPDFWriter.hh b/include/qpdf/QPDFWriter.hh
index 5d3ad5df..f30a9986 100644
--- a/include/qpdf/QPDFWriter.hh
+++ b/include/qpdf/QPDFWriter.hh
@@ -432,44 +432,6 @@ class QPDFWriter
         qpdf_r3_print_e print,
         bool encrypt_metadata_aes);
 
-    // Pre qpdf 8.4.0 API
-    [[deprecated("see newer API above")]] QPDF_DLL void
-    setR3EncryptionParameters(
-        char const* user_password,
-        char const* owner_password,
-        bool allow_accessibility,
-        bool allow_extract,
-        qpdf_r3_print_e print,
-        qpdf_r3_modify_e modify);
-    [[deprecated("see newer API above")]] QPDF_DLL void
-    setR4EncryptionParameters(
-        char const* user_password,
-        char const* owner_password,
-        bool allow_accessibility,
-        bool allow_extract,
-        qpdf_r3_print_e print,
-        qpdf_r3_modify_e modify,
-        bool encrypt_metadata,
-        bool use_aes);
-    [[deprecated("see newer API above")]] QPDF_DLL void
-    setR5EncryptionParameters(
-        char const* user_password,
-        char const* owner_password,
-        bool allow_accessibility,
-        bool allow_extract,
-        qpdf_r3_print_e print,
-        qpdf_r3_modify_e modify,
-        bool encrypt_metadata);
-    [[deprecated("see newer API above")]] QPDF_DLL void
-    setR6EncryptionParameters(
-        char const* user_password,
-        char const* owner_password,
-        bool allow_accessibility,
-        bool allow_extract,
-        qpdf_r3_print_e print,
-        qpdf_r3_modify_e modify,
-        bool encrypt_metadata_aes);
-
     // Create linearized output.  Disables qdf mode, content
     // normalization, and stream prefiltering.
     QPDF_DLL
diff --git a/include/qpdf/qpdf-c.h b/include/qpdf/qpdf-c.h
index 9c7557ab..1a81b899 100644
--- a/include/qpdf/qpdf-c.h
+++ b/include/qpdf/qpdf-c.h
@@ -524,51 +524,6 @@ extern "C" {
         enum qpdf_r3_print_e print,
         QPDF_BOOL encrypt_metadata);
 
-    /* Pre 8.4.0 encryption API */
-    QPDF_DLL
-    void qpdf_set_r3_encryption_parameters(
-        qpdf_data qpdf,
-        char const* user_password,
-        char const* owner_password,
-        QPDF_BOOL allow_accessibility,
-        QPDF_BOOL allow_extract,
-        enum qpdf_r3_print_e print,
-        enum qpdf_r3_modify_e modify);
-
-    QPDF_DLL
-    void qpdf_set_r4_encryption_parameters(
-        qpdf_data qpdf,
-        char const* user_password,
-        char const* owner_password,
-        QPDF_BOOL allow_accessibility,
-        QPDF_BOOL allow_extract,
-        enum qpdf_r3_print_e print,
-        enum qpdf_r3_modify_e modify,
-        QPDF_BOOL encrypt_metadata,
-        QPDF_BOOL use_aes);
-
-    QPDF_DLL
-    void qpdf_set_r5_encryption_parameters(
-        qpdf_data qpdf,
-        char const* user_password,
-        char const* owner_password,
-        QPDF_BOOL allow_accessibility,
-        QPDF_BOOL allow_extract,
-        enum qpdf_r3_print_e print,
-        enum qpdf_r3_modify_e modify,
-        QPDF_BOOL encrypt_metadata);
-
-    QPDF_DLL
-    void qpdf_set_r6_encryption_parameters(
-        qpdf_data qpdf,
-        char const* user_password,
-        char const* owner_password,
-        QPDF_BOOL allow_accessibility,
-        QPDF_BOOL allow_extract,
-        enum qpdf_r3_print_e print,
-        enum qpdf_r3_modify_e modify,
-        QPDF_BOOL encrypt_metadata);
-
     QPDF_DLL
     void qpdf_set_linearization(qpdf_data qpdf, QPDF_BOOL value);
 
diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc
index 215af009..2b3e0207 100644
--- a/libqpdf/QPDFWriter.cc
+++ b/libqpdf/QPDFWriter.cc
@@ -390,31 +390,6 @@ QPDFWriter::setR2EncryptionParameters(
     setEncryptionParameters(user_password, owner_password, 1, 2, 5, clear);
 }
 
-void
-QPDFWriter::setR3EncryptionParameters(
-    char const* user_password,
-    char const* owner_password,
-    bool allow_accessibility,
-    bool allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify)
-{
-    std::set<int> clear;
-    interpretR3EncryptionParameters(
-        clear,
-        user_password,
-        owner_password,
-        allow_accessibility,
-        allow_extract,
-        true,
-        true,
-        true,
-        true,
-        print,
-        modify);
-    setEncryptionParameters(user_password, owner_password, 2, 3, 16, clear);
-}
-
 void
 QPDFWriter::setR3EncryptionParameters(
     char const* user_password,
@@ -443,35 +418,6 @@ QPDFWriter::setR3EncryptionParameters(
     setEncryptionParameters(user_password, owner_password, 2, 3, 16, clear);
 }
 
-void
-QPDFWriter::setR4EncryptionParameters(
-    char const* user_password,
-    char const* owner_password,
-    bool allow_accessibility,
-    bool allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    bool encrypt_metadata,
-    bool use_aes)
-{
-    std::set<int> clear;
-    interpretR3EncryptionParameters(
-        clear,
-        user_password,
-        owner_password,
-        allow_accessibility,
-        allow_extract,
-        true,
-        true,
-        true,
-        true,
-        print,
-        modify);
-    this->m->encrypt_use_aes = use_aes;
-    this->m->encrypt_metadata = encrypt_metadata;
-    setEncryptionParameters(user_password, owner_password, 4, 4, 16, clear);
-}
-
 void
 QPDFWriter::setR4EncryptionParameters(
     char const* user_password,
@@ -504,34 +450,6 @@ QPDFWriter::setR4EncryptionParameters(
     setEncryptionParameters(user_password, owner_password, 4, 4, 16, clear);
 }
 
-void
-QPDFWriter::setR5EncryptionParameters(
-    char const* user_password,
-    char const* owner_password,
-    bool allow_accessibility,
-    bool allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    bool encrypt_metadata)
-{
-    std::set<int> clear;
-    interpretR3EncryptionParameters(
-        clear,
-        user_password,
-        owner_password,
-        allow_accessibility,
-        allow_extract,
-        true,
-        true,
-        true,
-        true,
-        print,
-        modify);
-    this->m->encrypt_use_aes = true;
-    this->m->encrypt_metadata = encrypt_metadata;
-    setEncryptionParameters(user_password, owner_password, 5, 5, 32, clear);
-}
-
 void
 QPDFWriter::setR5EncryptionParameters(
     char const* user_password,
@@ -563,34 +481,6 @@ QPDFWriter::setR5EncryptionParameters(
     setEncryptionParameters(user_password, owner_password, 5, 5, 32, clear);
 }
 
-void
-QPDFWriter::setR6EncryptionParameters(
-    char const* user_password,
-    char const* owner_password,
-    bool allow_accessibility,
-    bool allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    bool encrypt_metadata)
-{
-    std::set<int> clear;
-    interpretR3EncryptionParameters(
-        clear,
-        user_password,
-        owner_password,
-        allow_accessibility,
-        allow_extract,
-        true,
-        true,
-        true,
-        true,
-        print,
-        modify);
-    this->m->encrypt_use_aes = true;
-    this->m->encrypt_metadata = encrypt_metadata;
-    setEncryptionParameters(user_password, owner_password, 5, 6, 32, clear);
-}
-
 void
 QPDFWriter::setR6EncryptionParameters(
     char const* user_password,
diff --git a/libqpdf/qpdf-c.cc b/libqpdf/qpdf-c.cc
index 926768ad..e4ec6a61 100644
--- a/libqpdf/qpdf-c.cc
+++ b/libqpdf/qpdf-c.cc
@@ -805,130 +805,6 @@ qpdf_set_r6_encryption_parameters2(
         encrypt_metadata != QPDF_FALSE);
 }
 
-void
-qpdf_set_r3_encryption_parameters(
-    qpdf_data qpdf,
-    char const* user_password,
-    char const* owner_password,
-    QPDF_BOOL allow_accessibility,
-    QPDF_BOOL allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify)
-{
-#ifdef _MSC_VER
-# pragma warning(disable : 4996)
-#endif
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-    qpdf->qpdf_writer->setR3EncryptionParameters(
-        user_password,
-        owner_password,
-        allow_accessibility != QPDF_FALSE,
-        allow_extract != QPDF_FALSE,
-        print,
-        modify);
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic pop
-#endif
-}
-
-void
-qpdf_set_r4_encryption_parameters(
-    qpdf_data qpdf,
-    char const* user_password,
-    char const* owner_password,
-    QPDF_BOOL allow_accessibility,
-    QPDF_BOOL allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    QPDF_BOOL encrypt_metadata,
-    QPDF_BOOL use_aes)
-{
-#ifdef _MSC_VER
-# pragma warning(disable : 4996)
-#endif
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-    qpdf->qpdf_writer->setR4EncryptionParameters(
-        user_password,
-        owner_password,
-        allow_accessibility != QPDF_FALSE,
-        allow_extract != QPDF_FALSE,
-        print,
-        modify,
-        encrypt_metadata != QPDF_FALSE,
-        use_aes != QPDF_FALSE);
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic pop
-#endif
-}
-
-void
-qpdf_set_r5_encryption_parameters(
-    qpdf_data qpdf,
-    char const* user_password,
-    char const* owner_password,
-    QPDF_BOOL allow_accessibility,
-    QPDF_BOOL allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    QPDF_BOOL encrypt_metadata)
-{
-#ifdef _MSC_VER
-# pragma warning(disable : 4996)
-#endif
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-    qpdf->qpdf_writer->setR5EncryptionParameters(
-        user_password,
-        owner_password,
-        allow_accessibility != QPDF_FALSE,
-        allow_extract != QPDF_FALSE,
-        print,
-        modify,
-        encrypt_metadata != QPDF_FALSE);
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic pop
-#endif
-}
-
-void
-qpdf_set_r6_encryption_parameters(
-    qpdf_data qpdf,
-    char const* user_password,
-    char const* owner_password,
-    QPDF_BOOL allow_accessibility,
-    QPDF_BOOL allow_extract,
-    qpdf_r3_print_e print,
-    qpdf_r3_modify_e modify,
-    QPDF_BOOL encrypt_metadata)
-{
-#ifdef _MSC_VER
-# pragma warning(disable : 4996)
-#endif
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-    qpdf->qpdf_writer->setR6EncryptionParameters(
-        user_password,
-        owner_password,
-        allow_accessibility != QPDF_FALSE,
-        allow_extract != QPDF_FALSE,
-        print,
-        modify,
-        encrypt_metadata != QPDF_FALSE);
-#if (defined(__GNUC__) || defined(__clang__))
-# pragma GCC diagnostic pop
-#endif
-}
-
 void
 qpdf_set_linearization(qpdf_data qpdf, QPDF_BOOL value)
 {