diff --git a/libs/bssl/src/ec_key.rs b/libs/bssl/src/ec_key.rs
index 7e677c4..6436be3 100644
--- a/libs/bssl/src/ec_key.rs
+++ b/libs/bssl/src/ec_key.rs
@@ -45,7 +45,7 @@
 type Coordinate = [u8; P256_AFFINE_COORDINATE_SIZE];
 
 /// Wrapper of an `EC_KEY` object, representing a public or private EC key.
-pub struct EcKey(NonNull<EC_KEY>);
+pub struct EcKey(pub(crate) NonNull<EC_KEY>);
 
 impl Drop for EcKey {
     fn drop(&mut self) {
diff --git a/libs/bssl/src/evp.rs b/libs/bssl/src/evp.rs
new file mode 100644
index 0000000..30bfc21
--- /dev/null
+++ b/libs/bssl/src/evp.rs
@@ -0,0 +1,90 @@
+// Copyright 2023, The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Wrappers of the EVP functions in BoringSSL evp.h.
+
+use crate::cbb::CbbFixed;
+use crate::ec_key::EcKey;
+use crate::util::{check_int_result, to_call_failed_error};
+use alloc::vec::Vec;
+use bssl_avf_error::{ApiName, Result};
+use bssl_ffi::{
+    CBB_flush, CBB_len, EVP_PKEY_free, EVP_PKEY_new, EVP_PKEY_set1_EC_KEY, EVP_marshal_public_key,
+    EVP_PKEY,
+};
+use core::ptr::NonNull;
+
+/// Wrapper of an `EVP_PKEY` object, representing a public or private key.
+pub struct EvpPKey {
+    pkey: NonNull<EVP_PKEY>,
+    /// Since this struct owns the inner key, the inner key remains valid as
+    /// long as the pointer to `EVP_PKEY` is valid.
+    _inner_key: EcKey,
+}
+
+impl Drop for EvpPKey {
+    fn drop(&mut self) {
+        // SAFETY: It is safe because `EVP_PKEY` has been allocated by BoringSSL and isn't
+        // used after this.
+        unsafe { EVP_PKEY_free(self.pkey.as_ptr()) }
+    }
+}
+
+/// Creates a new empty `EVP_PKEY`.
+fn new_pkey() -> Result<NonNull<EVP_PKEY>> {
+    // SAFETY: The returned pointer is checked below.
+    let key = unsafe { EVP_PKEY_new() };
+    NonNull::new(key).ok_or(to_call_failed_error(ApiName::EVP_PKEY_new))
+}
+
+impl TryFrom<EcKey> for EvpPKey {
+    type Error = bssl_avf_error::Error;
+
+    fn try_from(key: EcKey) -> Result<Self> {
+        let pkey = new_pkey()?;
+        // SAFETY: The function only sets the inner key of the initialized and
+        // non-null `EVP_PKEY` to point to the given `EC_KEY`. It only reads from
+        // and writes to the initialized `EVP_PKEY`.
+        // Since this struct owns the inner key, the inner key remains valid as
+        // long as `EVP_PKEY` is valid.
+        let ret = unsafe { EVP_PKEY_set1_EC_KEY(pkey.as_ptr(), key.0.as_ptr()) };
+        check_int_result(ret, ApiName::EVP_PKEY_set1_EC_KEY)?;
+        Ok(Self { pkey, _inner_key: key })
+    }
+}
+
+impl EvpPKey {
+    /// Returns a DER-encoded SubjectPublicKeyInfo structure as specified
+    /// in RFC 5280 s4.1.2.7:
+    ///
+    /// https://www.rfc-editor.org/rfc/rfc5280.html#section-4.1.2.7
+    pub fn subject_public_key_info(&self) -> Result<Vec<u8>> {
+        const CAPACITY: usize = 256;
+        let mut buf = [0u8; CAPACITY];
+        let mut cbb = CbbFixed::new(buf.as_mut());
+        // SAFETY: The function only write bytes to the buffer managed by the valid `CBB`.
+        // The inner key in `EVP_PKEY` was set to a valid key when the object was created.
+        // As this struct owns the inner key, the inner key is guaranteed to be valid
+        // throughout the execution of the function.
+        let ret = unsafe { EVP_marshal_public_key(cbb.as_mut(), self.pkey.as_ptr()) };
+        check_int_result(ret, ApiName::EVP_marshal_public_key)?;
+        // SAFETY: This is safe because the CBB pointer is a valid pointer initialized with
+        // `CBB_init_fixed()`.
+        check_int_result(unsafe { CBB_flush(cbb.as_mut()) }, ApiName::CBB_flush)?;
+        // SAFETY: This is safe because the CBB pointer is initialized with `CBB_init_fixed()`,
+        // and it has been flushed, thus it has no active children.
+        let len = unsafe { CBB_len(cbb.as_ref()) };
+        Ok(buf.get(0..len).ok_or(to_call_failed_error(ApiName::CBB_len))?.to_vec())
+    }
+}
diff --git a/libs/bssl/src/lib.rs b/libs/bssl/src/lib.rs
index 8e3abcf..e378386 100644
--- a/libs/bssl/src/lib.rs
+++ b/libs/bssl/src/lib.rs
@@ -24,6 +24,7 @@
 mod digest;
 mod ec_key;
 mod err;
+mod evp;
 mod hkdf;
 mod hmac;
 mod rand;
@@ -37,6 +38,7 @@
 pub use cbs::Cbs;
 pub use digest::Digester;
 pub use ec_key::{EcKey, ZVec};
+pub use evp::EvpPKey;
 pub use hkdf::hkdf;
 pub use hmac::hmac_sha256;
 pub use rand::rand_bytes;