diff --git a/rtc_base/openssl_stream_adapter.cc b/rtc_base/openssl_stream_adapter.cc
index 9fd8c8f395..5fa1a3c502 100644
--- a/rtc_base/openssl_stream_adapter.cc
+++ b/rtc_base/openssl_stream_adapter.cc
@@ -561,6 +561,21 @@ void OpenSSLStreamAdapter::SetInitialRetransmissionTimeout(int timeout_ms) {
 //
 // StreamInterface Implementation
 //
+// Backwards compatible Write() method using deprecated API.
+// Needed because deprecated API is still =0 in API definition.
+StreamResult OpenSSLStreamAdapter::Write(const void* data,
+                                         size_t data_len,
+                                         size_t* written,
+                                         int* error) {
+  // TODO(bugs.webrtc.org/14632): Consider doing
+  // RTC_CHECK_NOTREACHED(); when downstream usage is eliminated.
+  size_t dummy_written;
+  int dummy_error;
+  return Write(
+      rtc::MakeArrayView(reinterpret_cast<const uint8_t*>(data), data_len),
+      written ? *written : dummy_written, error ? *error : dummy_error);
+}
+
 StreamResult OpenSSLStreamAdapter::Write(rtc::ArrayView<const uint8_t> data,
                                          size_t& written,
                                          int& error) {
@@ -622,6 +637,19 @@ StreamResult OpenSSLStreamAdapter::Write(rtc::ArrayView<const uint8_t> data,
   // not reached
 }
 
+// Backwards compatible Read() method using deprecated API.
+StreamResult OpenSSLStreamAdapter::Read(void* data,
+                                        size_t data_len,
+                                        size_t* read,
+                                        int* error) {
+  // TODO(bugs.webrtc.org/14632): Consider doing
+  // RTC_CHECK_NOTREACHED() when downstream usage is thought to be eliminated.
+  size_t dummy_read;
+  int dummy_error;
+  return Read(rtc::MakeArrayView(reinterpret_cast<uint8_t*>(data), data_len),
+              read ? *read : dummy_read, error ? *error : dummy_error);
+}
+
 StreamResult OpenSSLStreamAdapter::Read(rtc::ArrayView<uint8_t> data,
                                         size_t& read,
                                         int& error) {
diff --git a/rtc_base/openssl_stream_adapter.h b/rtc_base/openssl_stream_adapter.h
index aee8d36aad..3c94ecd2ce 100644
--- a/rtc_base/openssl_stream_adapter.h
+++ b/rtc_base/openssl_stream_adapter.h
@@ -95,9 +95,16 @@ class OpenSSLStreamAdapter final : public SSLStreamAdapter {
   void SetMaxProtocolVersion(SSLProtocolVersion version) override;
   void SetInitialRetransmissionTimeout(int timeout_ms) override;
 
+  [[deprecated("bugs.webrtc.org/14632")]] StreamResult
+  Read(void* data, size_t data_len, size_t* read, int* error) override;
   StreamResult Read(rtc::ArrayView<uint8_t> data,
                     size_t& read,
                     int& error) override;
+  [[deprecated("bugs.webrtc.org/14632")]] StreamResult Write(
+      const void* data,
+      size_t data_len,
+      size_t* written,
+      int* error) override;
   StreamResult Write(rtc::ArrayView<const uint8_t> data,
                      size_t& written,
                      int& error) override;