diff --git a/include/mbedtls/aead_chacha20_poly1305.h b/include/mbedtls/aead_chacha20_poly1305.h
new file mode 100644
index 000000000..a1ccf319e
--- /dev/null
+++ b/include/mbedtls/aead_chacha20_poly1305.h
@@ -0,0 +1,224 @@
+/**
+ * \file aead_chacha20_poly1305.h
+ *
+ * \brief ChaCha20-Poly1305 AEAD construction based on RFC 7539.
+ *
+ *  Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+#ifndef MBEDTLS_AEAD_CHACHA20_POLY1305_H
+#define MBEDTLS_AEAD_CHACHA20_POLY1305_H
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if !defined(MBEDTLS_AEAD_CHACHA20_POLY1305_ALT)
+
+#include "chacha20.h"
+#include "poly1305.h"
+
+#define MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA -0x00047 /**< Invalid input parameter(s). */
+#define MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE      -0x00049 /**< The requested operation is not permitted in the current state */
+
+typedef enum
+{
+    MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT,
+    MBEDTLS_AEAD_CHACHA20_POLY1305_DECRYPT
+}
+mbedtls_aead_chacha20_poly1305_mode_t;
+
+typedef struct
+{
+    mbedtls_chacha20_context chacha20_ctx;      /** ChaCha20 context */
+    mbedtls_poly1305_context poly1305_ctx;      /** Poly1305 context */
+    uint64_t aad_len;                           /** Length (bytes) of the Additional Authenticated Data */
+    uint64_t ciphertext_len;                    /** Length (bytes) of the ciphertext */
+    int state;                                  /** Current state of the context */
+    mbedtls_aead_chacha20_poly1305_mode_t mode; /** Cipher mode (encrypt or decrypt) */
+}
+mbedtls_aead_chacha20_poly1305_context;
+
+/**
+ * \brief               Initialize ChaCha20-Poly1305 context
+ *
+ * \param ctx           ChaCha20-Poly1305 context to be initialized
+ */
+void mbedtls_aead_chacha20_poly1305_init( mbedtls_aead_chacha20_poly1305_context *ctx );
+
+/**
+ * \brief               Clear ChaCha20-Poly1305 context
+ *
+ * \param ctx           ChaCha20-Poly1305 context to be cleared
+ */
+void mbedtls_aead_chacha20_poly1305_free( mbedtls_aead_chacha20_poly1305_context *ctx );
+
+/**
+ * \brief               Set the ChaCha20-Poly1305 symmetric encryption key.
+ *
+ * \param ctx           The ChaCha20-Poly1305 context.
+ * \param key           The 256-bit (32 bytes) key.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if \p ctx or \p key are NULL.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_setkey( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           const unsigned char key[32] );
+
+/**
+ * \brief               Setup ChaCha20-Poly1305 context for encryption or decryption.
+ *
+ * \note                If the context is being used for AAD only (no data to
+ *                      encrypt or decrypt) then \p mode can be set to any value.
+ *
+ * \param ctx           The ChaCha20-Poly1305 context.
+ * \param nonce         The nonce/IV to use for the message. This must be unique
+ *                      for every message encrypted under the same key.
+ * \param mode          Specifies whether the context is used to encrypt or
+ *                      decrypt data.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if \p ctx or \p mac are NULL.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_starts( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           const unsigned char nonce[12],
+                                           mbedtls_aead_chacha20_poly1305_mode_t mode );
+
+/**
+ * \brief               Process additional authenticated data (AAD).
+ *
+ *                      This function processes data that is authenticated, but
+ *                      not encrypted.
+ *
+ * \note                This function is called before data is encrypted/decrypted.
+ *                      I.e. call this function to process the AAD before calling
+ *                      mbedtls_aead_chacha20_poly1305_update.
+ *
+ *                      You may call this function multiple times to process
+ *                      an arbitrary amount of AAD. It is permitted to call
+ *                      this function 0 times, if no AAD is used.
+ *
+ *                      This function cannot be called any more if data has
+ *                      been processed by mbedtls_aead_chacha20_poly1305_update,
+ *                      or if the context has been finished.
+ *
+ * \param ctx           The ChaCha20-Poly1305 context.
+ * \param aad_len       The length (in bytes) of the AAD. The length has no
+ *                      restrictions.
+ * \param aad           Buffer containing the AAD.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if \p ctx or \p aad are NULL.
+ *                      MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE is returned if
+ *                      the context has not been setup, the context has been
+ *                      finished, or if the AAD has been finished.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_update_aad( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                               size_t aad_len,
+                                               const unsigned char *aad );
+
+/**
+ * \brief               Encrypt/decrypt data.
+ *
+ *                      The direction (encryption or decryption) depends on the
+ *                      mode that was given when calling
+ *                      mbedtls_aead_chacha20_poly1305_starts.
+ *
+ *                      You may call this function multiple times to process
+ *                      an arbitrary amount of data. It is permitted to call
+ *                      this function 0 times, if no data is to be encrypted
+ *                      or decrypted.
+ *
+ * \param ctx           The ChaCha20-Poly1305 context.
+ * \param len           The length (in bytes) of the data to encrypt or decrypt.
+ * \param input         Buffer containing the data to encrypt or decrypt.
+ * \param output        Buffer to where the encrypted or decrypted data is written.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if \p ctx, \p input, or \p output are NULL.
+ *                      MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE is returned if
+ *                      the context has not been setup, or if the context has been
+ *                      finished.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_update( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                            size_t len,
+                                            const unsigned char *input,
+                                            unsigned char *output );
+
+/**
+ * \brief               Compute the ChaCha20-Poly1305 MAC.
+ *
+ * \param ctx           The ChaCha20-Poly1305 context.
+ * \param mac           Buffer to where the 128-bit (16 bytes) MAC is written.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if \p ctx or \p mac are NULL.
+ *                      MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE is returned if
+ *                      the context has not been setup.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_finish( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           unsigned char mac[16] );
+
+#else /* !MBEDTLS_AEAD_CHACHA20_POLY1305_ALT */
+#include "aead_chacha20_poly1305_alt.h"
+#endif /* !MBEDTLS_AEAD_CHACHA20_POLY1305_ALT */
+
+/**
+ * \brief               Encrypt or decrypt data, and produce a MAC with ChaCha20-Poly1305.
+ *
+ * \param key           The 256-bit (32 bytes) encryption key to use.
+ * \param nonce         The 96-bit (12 bytes) nonce/IV to use.
+ * \param mode          Specifies whether the data in the \p input buffer is to
+ *                      be encrypted or decrypted. If there is no data to encrypt
+ *                      or decrypt (i.e. \p ilen is 0) then the value of this
+ *                      parameter does not matter.
+ * \param aad_len       The length (in bytes) of the AAD data to process.
+ * \param aad           Buffer containing the additional authenticated data (AAD).
+ * \param ilen          The length (in bytes) of the data to encrypt or decrypt.
+ * \param input         Buffer containing the data to encrypt or decrypt.
+ * \param output        Buffer to where the encrypted or decrypted data is written.
+ * \param mac           Buffer to where the computed 128-bit (16 bytes) MAC is written.
+ *
+ * \return              MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA is returned
+ *                      if one or more of the required parameters are NULL.
+ *                      Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_aead_chacha20_poly1305_crypt_and_mac( const unsigned char key[32],
+                                                  const unsigned char nonce[12],
+                                                  mbedtls_aead_chacha20_poly1305_mode_t mode,
+                                                  size_t aad_len,
+                                                  const unsigned char *aad,
+                                                  size_t ilen,
+                                                  const unsigned char *input,
+                                                  unsigned char *output,
+                                                  unsigned char mac[16] );
+
+/**
+ * \brief               Checkup routine
+ *
+ * \return              0 if successful, or 1 if the test failed
+ */
+int mbedtls_aead_chacha20_poly1305_self_test( int verbose );
+
+#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_H */
diff --git a/include/mbedtls/chacha20.h b/include/mbedtls/chacha20.h
index d23618ee0..ab87f66b9 100644
--- a/include/mbedtls/chacha20.h
+++ b/include/mbedtls/chacha20.h
@@ -99,6 +99,27 @@ int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx,
                              const unsigned char nonce[12],
                              uint32_t counter );
 
+/**
+ * \brief           Generates a block of keystream bytes for a specific counter value.
+ *
+ *                  This function uses the key and nonce previously set in
+ *                  the context (via mbedtls_chacha20_setkey and
+ *                  mbedtls_chacha20_starts), but ignores the previously
+ *                  set counter and uses the counter given as the parameter to
+ *                  this function.
+ *
+ * \param ctx       The ChaCha20 context. This context is not modified.
+ * \param counter   The counter value to use.
+ * \param keystream Buffer to where the generated keystream bytes are written.
+ *
+ * \return          MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if ctx or keystream are
+ *                  NULL.
+ *                  Otherwise, 0 is returned to indicate success.
+ */
+int mbedtls_chacha20_keystream_block( const mbedtls_chacha20_context *ctx,
+                                      uint32_t counter,
+                                      unsigned char keystream[64] );
+
 /**
  * \brief           Encrypt or decrypt data.
  *
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 7d0960a29..22d465cda 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -269,6 +269,7 @@
  *            digests and ciphers instead.
  *
  */
+//#define MBEDTLS_AEAD_CHACHA20_POLY1305_ALT
 //#define MBEDTLS_AES_ALT
 //#define MBEDTLS_ARC4_ALT
 //#define MBEDTLS_BLOWFISH_ALT
@@ -1688,6 +1689,17 @@
  */
 #define MBEDTLS_AES_C
 
+/**
+ * \def MBEDTLS_AEAD_CHACHA20_POLY1305_C
+ *
+ * Enable the ChaCha20-Poly1305 AEAD algorithm.
+ *
+ * Module:  library/aead_chacha20_poly1305.c
+ *
+ * This module requires: MBEDTLS_CHACHA20_C, MBEDTLS_POLY1305_C
+ */
+#define MBEDTLS_AEAD_CHACHA20_POLY1305_C
+
 /**
  * \def MBEDTLS_ARC4_C
  *
@@ -1837,6 +1849,16 @@
  */
 #define MBEDTLS_CAMELLIA_C
 
+/**
+ * \def MBEDTLS_CHACHA20_C
+ *
+ * Enable the ChaCha20 block cipher.
+ *
+ * Module:  library/chacha20.c
+ * Caller:  library/aead_chacha20_poly1305.c
+ */
+#define MBEDTLS_CHACHA20_C
+
 /**
  * \def MBEDTLS_CCM_C
  *
@@ -2405,6 +2427,7 @@
  * Enable the Poly1305 MAC algorithm.
  *
  * Module:  library/poly1305.c
+ * Caller:  library/aead_chacha20_poly1305.c
  */
 #define MBEDTLS_POLY1305_C
 
diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index feeda79ed..72b7f18ff 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -78,6 +78,7 @@
  * SHA512    1                  0x0039-0x0039
  * CHACHA20  1                  0x003B-0x003B
  * POLY1305  1                  0x0041-0x0041
+ * AEAD_CHACHA20_POLY1305 2     0x0047-0x0049
  *
  * High-level module nr (3 bits - 0x0...-0x7...)
  * Name      ID  Nr of Errors
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 251b6c625..b8f663d9c 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -3,6 +3,7 @@ option(USE_SHARED_MBEDTLS_LIBRARY "Build mbed TLS shared library." OFF)
 option(LINK_WITH_PTHREAD "Explicitly link mbed TLS library to pthread." OFF)
 
 set(src_crypto
+    aead_chacha20_poly1305.c
     aes.c
     aesni.c
     arc4.c
diff --git a/library/Makefile b/library/Makefile
index 5fd693b25..de4bd5c42 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -47,7 +47,8 @@ ifdef WINDOWS_BUILD
 DLEXT=dll
 endif
 
-OBJS_CRYPTO=	aes.o		aesni.o		arc4.o		\
+OBJS_CRYPTO=	aead_chacha20_poly1305.o	\
+		aes.o		aesni.o		arc4.o		\
 		asn1parse.o	asn1write.o	base64.o	\
 		bignum.o	blowfish.o	camellia.o	\
 		ccm.o		chacha20.o			\
diff --git a/library/aead_chacha20_poly1305.c b/library/aead_chacha20_poly1305.c
new file mode 100644
index 000000000..ab29dfa1b
--- /dev/null
+++ b/library/aead_chacha20_poly1305.c
@@ -0,0 +1,463 @@
+/**
+ * \file aead_chacha20_poly1305.c
+ *
+ * \brief ChaCha20-Poly1305 AEAD construction based on RFC 7539.
+ *
+ *  Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
+
+#include "mbedtls/aead_chacha20_poly1305.h"
+#include <string.h>
+
+#if defined(MBEDTLS_SELF_TEST)
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#define mbedtls_printf printf
+#endif /* MBEDTLS_PLATFORM_C */
+#endif /* MBEDTLS_SELF_TEST */
+
+#if !defined(MBEDTLS_AEAD_CHACHA20_POLY1305_ALT)
+
+#define AEAD_CHACHA20_POLY1305_STATE_INIT       ( 0 )
+#define AEAD_CHACHA20_POLY1305_STATE_AAD        ( 1 )
+#define AEAD_CHACHA20_POLY1305_STATE_CIPHERTEXT ( 2 ) /* Encrypting or decrypting */
+#define AEAD_CHACHA20_POLY1305_STATE_FINISHED   ( 3 )
+
+/* Implementation that should never be optimized out by the compiler */
+static void mbedtls_zeroize( void *v, size_t n ) {
+    volatile unsigned char *p = v; while( n-- ) *p++ = 0;
+}
+
+/**
+ * \brief           Adds padding bytes (zeroes) to pad the AAD for Poly1305.
+ *
+ * \param ctx       The ChaCha20-Poly1305 context.
+ */
+static void mbedtls_aead_chacha20_poly1305_pad_aad( mbedtls_aead_chacha20_poly1305_context *ctx )
+{
+    uint32_t partial_block_len = (uint32_t)( ctx->aad_len % 16U );
+    unsigned char zeroes[15];
+
+    if ( partial_block_len > 0U )
+    {
+        memset( zeroes, 0, sizeof(zeroes) );
+        (void)mbedtls_poly1305_update( &ctx->poly1305_ctx,
+                                       16U - partial_block_len,
+                                       zeroes );
+    }
+}
+
+/**
+ * \brief           Adds padding bytes (zeroes) to pad the ciphertext for Poly1305.
+ *
+ * \param ctx       The ChaCha20-Poly1305 context.
+ */
+static void mbedtls_aead_chacha20_poly1305_pad_ciphertext( mbedtls_aead_chacha20_poly1305_context *ctx )
+{
+    uint32_t partial_block_len = (uint32_t)( ctx->ciphertext_len % 16U );
+    unsigned char zeroes[15];
+
+    if ( partial_block_len > 0U )
+    {
+        memset( zeroes, 0, sizeof(zeroes) );
+        (void)mbedtls_poly1305_update( &ctx->poly1305_ctx,
+                                       16U - partial_block_len,
+                                       zeroes );
+    }
+}
+
+void mbedtls_aead_chacha20_poly1305_init( mbedtls_aead_chacha20_poly1305_context *ctx )
+{
+    if ( ctx != NULL )
+    {
+        mbedtls_chacha20_init( &ctx->chacha20_ctx );
+        mbedtls_poly1305_init( &ctx->poly1305_ctx );
+        ctx->aad_len        = 0U;
+        ctx->ciphertext_len = 0U;
+        ctx->state          = AEAD_CHACHA20_POLY1305_STATE_INIT;
+        ctx->mode           = MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT;
+    }
+}
+
+void mbedtls_aead_chacha20_poly1305_free( mbedtls_aead_chacha20_poly1305_context *ctx )
+{
+    if ( ctx != NULL )
+    {
+        mbedtls_chacha20_free( &ctx->chacha20_ctx );
+        mbedtls_poly1305_free( &ctx->poly1305_ctx );
+        ctx->aad_len        = 0U;
+        ctx->ciphertext_len = 0U;
+        ctx->state          = AEAD_CHACHA20_POLY1305_STATE_INIT;
+        ctx->mode           = MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT;
+    }
+}
+
+int mbedtls_aead_chacha20_poly1305_setkey( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           const unsigned char key[32] )
+{
+    int result;
+
+    if ( ( ctx == NULL ) || ( key == NULL ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA );
+    }
+
+    result = mbedtls_chacha20_setkey( &ctx->chacha20_ctx, key );
+
+    return( result );
+}
+
+int mbedtls_aead_chacha20_poly1305_starts( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           const unsigned char nonce[12],
+                                           mbedtls_aead_chacha20_poly1305_mode_t mode  )
+{
+    int result;
+    unsigned char poly1305_key[64];
+
+    if ( ( ctx == NULL ) || ( nonce == NULL ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA );
+    }
+
+    result = mbedtls_chacha20_starts( &ctx->chacha20_ctx, nonce, 1U );
+    if ( result != 0 )
+        goto cleanup;
+
+    /* Generate the Poly1305 key by getting the ChaCha20 keystream output with counter = 0.
+     * Only the first 256-bits (32 bytes) of the key is used for Poly1305.
+     * The other 256 bits are discarded.
+     */
+    result = mbedtls_chacha20_keystream_block( &ctx->chacha20_ctx, 0U, poly1305_key );
+    if ( result != 0 )
+        goto cleanup;
+
+    result = mbedtls_poly1305_setkey( &ctx->poly1305_ctx, poly1305_key );
+
+    if ( result == 0 )
+    {
+        ctx->aad_len        = 0U;
+        ctx->ciphertext_len = 0U;
+        ctx->state          = AEAD_CHACHA20_POLY1305_STATE_AAD;
+        ctx->mode           = mode;
+    }
+
+cleanup:
+    mbedtls_zeroize( poly1305_key, 64U );
+    return( result );
+}
+
+int mbedtls_aead_chacha20_poly1305_update_aad( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                               size_t aad_len,
+                                               const unsigned char *aad )
+{
+    if ( ( ctx == NULL ) || ( aad == NULL ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA );
+    }
+    else if ( ctx->state != AEAD_CHACHA20_POLY1305_STATE_AAD )
+    {
+        return (MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE );
+    }
+
+    ctx->aad_len += aad_len;
+
+    return ( mbedtls_poly1305_update( &ctx->poly1305_ctx, aad_len, aad ) );
+}
+
+int mbedtls_aead_chacha20_poly1305_update( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           size_t len,
+                                           const unsigned char *input,
+                                           unsigned char *output )
+{
+    if ( ( ctx == NULL ) || ( input == NULL ) || ( output == NULL ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA );
+    }
+    else if ( ( ctx->state != AEAD_CHACHA20_POLY1305_STATE_AAD ) &&
+              ( ctx->state != AEAD_CHACHA20_POLY1305_STATE_CIPHERTEXT ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE );
+    }
+
+    if ( ctx->state == AEAD_CHACHA20_POLY1305_STATE_AAD )
+    {
+        ctx->state = AEAD_CHACHA20_POLY1305_STATE_CIPHERTEXT;
+
+        mbedtls_aead_chacha20_poly1305_pad_aad( ctx );
+    }
+
+    ctx->ciphertext_len += len;
+
+    if ( ctx->mode == MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT )
+    {
+        /* Note: the following functions return an error only if one or more of
+         *       the input pointers are NULL. Since we have checked their validity
+         *       above, we can safety ignore the return value.
+         */
+        (void)mbedtls_chacha20_update( &ctx->chacha20_ctx, len, input, output );
+        (void)mbedtls_poly1305_update( &ctx->poly1305_ctx, len, output );
+    }
+    else /* DECRYPT */
+    {
+        (void)mbedtls_poly1305_update( &ctx->poly1305_ctx, len, input );
+        (void)mbedtls_chacha20_update( &ctx->chacha20_ctx, len, input, output );
+    }
+
+    return( 0 );
+}
+
+int mbedtls_aead_chacha20_poly1305_finish( mbedtls_aead_chacha20_poly1305_context *ctx,
+                                           unsigned char mac[16] )
+{
+    unsigned char len_block[16];
+
+    if ( ( ctx == NULL ) || ( mac == NULL ) )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA );
+    }
+    else if ( ctx->state == AEAD_CHACHA20_POLY1305_STATE_INIT )
+    {
+        return( MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE );
+    }
+
+    if ( ctx->state == AEAD_CHACHA20_POLY1305_STATE_AAD )
+    {
+        mbedtls_aead_chacha20_poly1305_pad_aad( ctx );
+    }
+    else if ( ctx->state == AEAD_CHACHA20_POLY1305_STATE_CIPHERTEXT )
+    {
+        mbedtls_aead_chacha20_poly1305_pad_ciphertext( ctx );
+    }
+
+    ctx->state = AEAD_CHACHA20_POLY1305_STATE_FINISHED;
+
+    /* The lengths of the AAD and ciphertext are processed by
+     * Poly1305 as the final 128-bit block, encoded as little-endian integers.
+     */
+    len_block[0]  = (unsigned char)ctx->aad_len;
+    len_block[1]  = (unsigned char)( ctx->aad_len >> 8 );
+    len_block[2]  = (unsigned char)( ctx->aad_len >> 16 );
+    len_block[3]  = (unsigned char)( ctx->aad_len >> 24 );
+    len_block[4]  = (unsigned char)( ctx->aad_len >> 32 );
+    len_block[5]  = (unsigned char)( ctx->aad_len >> 40 );
+    len_block[6]  = (unsigned char)( ctx->aad_len >> 48 );
+    len_block[7]  = (unsigned char)( ctx->aad_len >> 56 );
+    len_block[8]  = (unsigned char)ctx->ciphertext_len;
+    len_block[9]  = (unsigned char)( ctx->ciphertext_len >> 8 );
+    len_block[10] = (unsigned char)( ctx->ciphertext_len >> 16 );
+    len_block[11] = (unsigned char)( ctx->ciphertext_len >> 24 );
+    len_block[12] = (unsigned char)( ctx->ciphertext_len >> 32 );
+    len_block[13] = (unsigned char)( ctx->ciphertext_len >> 40 );
+    len_block[14] = (unsigned char)( ctx->ciphertext_len >> 48 );
+    len_block[15] = (unsigned char)( ctx->ciphertext_len >> 56 );
+
+    (void)mbedtls_poly1305_update( &ctx->poly1305_ctx, 16U, len_block );
+    (void)mbedtls_poly1305_finish( &ctx->poly1305_ctx, mac );
+
+    return( 0 );
+}
+
+#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_ALT */
+
+int mbedtls_aead_chacha20_poly1305_crypt_and_mac ( const unsigned char key[32],
+                                                    const unsigned char nonce[12],
+                                                    mbedtls_aead_chacha20_poly1305_mode_t mode,
+                                                    size_t aad_len,
+                                                    const unsigned char *aad,
+                                                    size_t ilen,
+                                                    const unsigned char *input,
+                                                    unsigned char *output,
+                                                    unsigned char mac[16] )
+{
+    mbedtls_aead_chacha20_poly1305_context ctx;
+    int result;
+
+    mbedtls_aead_chacha20_poly1305_init( &ctx );
+
+    result = mbedtls_aead_chacha20_poly1305_setkey( &ctx, key );
+    if ( result != 0 )
+        goto cleanup;
+
+    result = mbedtls_aead_chacha20_poly1305_starts( &ctx, nonce, mode );
+    if ( result != 0 )
+        goto cleanup;
+
+    result = mbedtls_aead_chacha20_poly1305_update_aad( &ctx, aad_len, aad );
+    if ( result != 0 )
+            goto cleanup;
+
+    result = mbedtls_aead_chacha20_poly1305_update( &ctx, ilen, input, output );
+    if ( result != 0 )
+            goto cleanup;
+
+    result = mbedtls_aead_chacha20_poly1305_finish( &ctx, mac );
+
+cleanup:
+    mbedtls_aead_chacha20_poly1305_free( &ctx );
+    return( result );
+}
+
+#if defined(MBEDTLS_SELF_TEST)
+
+static const unsigned char test_key[1][32] =
+{
+    {
+        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+        0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+        0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+        0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f
+    }
+};
+
+static const unsigned char test_nonce[1][12] =
+{
+    {
+        0x07, 0x00, 0x00, 0x00,                         /* 32-bit common part */
+        0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47  /* 64-bit IV */
+    }
+};
+
+static const unsigned char test_aad[1][12] =
+{
+    {
+        0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3,
+        0xc4, 0xc5, 0xc6, 0xc7
+    }
+};
+
+static const size_t test_aad_len[1] =
+{
+    12U
+};
+
+static const unsigned char test_input[1][114] =
+{
+    {
+        0x4c, 0x61, 0x64, 0x69, 0x65, 0x73, 0x20, 0x61,
+        0x6e, 0x64, 0x20, 0x47, 0x65, 0x6e, 0x74, 0x6c,
+        0x65, 0x6d, 0x65, 0x6e, 0x20, 0x6f, 0x66, 0x20,
+        0x74, 0x68, 0x65, 0x20, 0x63, 0x6c, 0x61, 0x73,
+        0x73, 0x20, 0x6f, 0x66, 0x20, 0x27, 0x39, 0x39,
+        0x3a, 0x20, 0x49, 0x66, 0x20, 0x49, 0x20, 0x63,
+        0x6f, 0x75, 0x6c, 0x64, 0x20, 0x6f, 0x66, 0x66,
+        0x65, 0x72, 0x20, 0x79, 0x6f, 0x75, 0x20, 0x6f,
+        0x6e, 0x6c, 0x79, 0x20, 0x6f, 0x6e, 0x65, 0x20,
+        0x74, 0x69, 0x70, 0x20, 0x66, 0x6f, 0x72, 0x20,
+        0x74, 0x68, 0x65, 0x20, 0x66, 0x75, 0x74, 0x75,
+        0x72, 0x65, 0x2c, 0x20, 0x73, 0x75, 0x6e, 0x73,
+        0x63, 0x72, 0x65, 0x65, 0x6e, 0x20, 0x77, 0x6f,
+        0x75, 0x6c, 0x64, 0x20, 0x62, 0x65, 0x20, 0x69,
+        0x74, 0x2e
+    }
+};
+
+static const unsigned char test_output[1][114] =
+{
+    {
+        0xd3, 0x1a, 0x8d, 0x34, 0x64, 0x8e, 0x60, 0xdb,
+        0x7b, 0x86, 0xaf, 0xbc, 0x53, 0xef, 0x7e, 0xc2,
+        0xa4, 0xad, 0xed, 0x51, 0x29, 0x6e, 0x08, 0xfe,
+        0xa9, 0xe2, 0xb5, 0xa7, 0x36, 0xee, 0x62, 0xd6,
+        0x3d, 0xbe, 0xa4, 0x5e, 0x8c, 0xa9, 0x67, 0x12,
+        0x82, 0xfa, 0xfb, 0x69, 0xda, 0x92, 0x72, 0x8b,
+        0x1a, 0x71, 0xde, 0x0a, 0x9e, 0x06, 0x0b, 0x29,
+        0x05, 0xd6, 0xa5, 0xb6, 0x7e, 0xcd, 0x3b, 0x36,
+        0x92, 0xdd, 0xbd, 0x7f, 0x2d, 0x77, 0x8b, 0x8c,
+        0x98, 0x03, 0xae, 0xe3, 0x28, 0x09, 0x1b, 0x58,
+        0xfa, 0xb3, 0x24, 0xe4, 0xfa, 0xd6, 0x75, 0x94,
+        0x55, 0x85, 0x80, 0x8b, 0x48, 0x31, 0xd7, 0xbc,
+        0x3f, 0xf4, 0xde, 0xf0, 0x8e, 0x4b, 0x7a, 0x9d,
+        0xe5, 0x76, 0xd2, 0x65, 0x86, 0xce, 0xc6, 0x4b,
+        0x61, 0x16
+    }
+};
+
+static const size_t test_input_len[1] =
+{
+    114U
+};
+
+static const unsigned char test_mac[1][16] =
+{
+    {
+        0x1a, 0xe1, 0x0b, 0x59, 0x4f, 0x09, 0xe2, 0x6a,
+        0x7e, 0x90, 0x2e, 0xcb, 0xd0, 0x60, 0x06, 0x91
+    }
+};
+
+int mbedtls_aead_chacha20_poly1305_self_test( int verbose )
+{
+    size_t i;
+    int result;
+    unsigned char output[200];
+    unsigned char mac[16];
+
+    for ( i = 0U; i < 1U; i++ )
+    {
+        result = mbedtls_aead_chacha20_poly1305_crypt_and_mac( test_key[i],
+                                                               test_nonce[i],
+                                                               MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT,
+                                                               test_aad_len[i],
+                                                               test_aad[i],
+                                                               test_input_len[i],
+                                                               test_input[i],
+                                                               output,
+                                                               mac );
+        if ( result != 0 )
+        {
+            if ( verbose != 0 )
+            {
+                mbedtls_printf( "ChaCha20-Poly1305 test %zi error code: %i\n", i, result );
+            }
+            return( -1 );
+        }
+
+        if ( memcmp( output, test_output[i], test_input_len[i] ) != 0 )
+        {
+            if ( verbose != 0 )
+            {
+                mbedtls_printf( "ChaCha20-Poly1305 test %zi failure (wrong output)\n", i );
+            }
+            return( -1 );
+        }
+
+        if ( memcmp( mac, test_mac[i], 16U ) != 0 )
+        {
+            if ( verbose != 0 )
+            {
+                mbedtls_printf( "ChaCha20-Poly1305 test %zi failure (wrong MAC)\n", i );
+            }
+            return( -1 );
+        }
+    }
+
+    return( 0 );
+}
+
+#endif /* MBEDTLS_SELF_TEST */
+
+#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_C */
diff --git a/library/chacha20.c b/library/chacha20.c
index 8206a3bf0..b20c7ad55 100644
--- a/library/chacha20.c
+++ b/library/chacha20.c
@@ -134,46 +134,47 @@ static void mbedtls_chacha20_inner_block( uint32_t state[16] )
  * \param working_state This state is used as a temporary working area.
  * \param keystream     Generated keystream bytes are written to this buffer.
  */
-static void mbedtls_chacha20_block( mbedtls_chacha20_context *ctx,
+static void mbedtls_chacha20_block( const uint32_t initial_state[16],
+                                    uint32_t working_state[16],
                                     unsigned char keystream[64] )
 {
     size_t i;
     size_t offset;
 
-    memcpy( ctx->working_state,
-            ctx->initial_state,
-            sizeof(ctx->initial_state) );
+    memcpy( working_state,
+            initial_state,
+            CHACHA20_BLOCK_SIZE_BYTES );
 
     for ( i = 0U; i < 10U; i++ )
     {
-        mbedtls_chacha20_inner_block( ctx->working_state );
+        mbedtls_chacha20_inner_block( working_state );
     }
 
-    ctx->working_state[0]  += ctx->initial_state[0];
-    ctx->working_state[1]  += ctx->initial_state[1];
-    ctx->working_state[2]  += ctx->initial_state[2];
-    ctx->working_state[3]  += ctx->initial_state[3];
-    ctx->working_state[4]  += ctx->initial_state[4];
-    ctx->working_state[5]  += ctx->initial_state[5];
-    ctx->working_state[6]  += ctx->initial_state[6];
-    ctx->working_state[7]  += ctx->initial_state[7];
-    ctx->working_state[8]  += ctx->initial_state[8];
-    ctx->working_state[9]  += ctx->initial_state[9];
-    ctx->working_state[10] += ctx->initial_state[10];
-    ctx->working_state[11] += ctx->initial_state[11];
-    ctx->working_state[12] += ctx->initial_state[12];
-    ctx->working_state[13] += ctx->initial_state[13];
-    ctx->working_state[14] += ctx->initial_state[14];
-    ctx->working_state[15] += ctx->initial_state[15];
+    working_state[0]  += initial_state[0];
+    working_state[1]  += initial_state[1];
+    working_state[2]  += initial_state[2];
+    working_state[3]  += initial_state[3];
+    working_state[4]  += initial_state[4];
+    working_state[5]  += initial_state[5];
+    working_state[6]  += initial_state[6];
+    working_state[7]  += initial_state[7];
+    working_state[8]  += initial_state[8];
+    working_state[9]  += initial_state[9];
+    working_state[10] += initial_state[10];
+    working_state[11] += initial_state[11];
+    working_state[12] += initial_state[12];
+    working_state[13] += initial_state[13];
+    working_state[14] += initial_state[14];
+    working_state[15] += initial_state[15];
 
     for ( i = 0U; i < 16; i++ )
     {
         offset = i * 4U;
 
-        keystream[offset     ] = (unsigned char)  ctx->working_state[i];
-        keystream[offset + 1U] = (unsigned char)( ctx->working_state[i] >> 8  );
-        keystream[offset + 2U] = (unsigned char)( ctx->working_state[i] >> 16 );
-        keystream[offset + 3U] = (unsigned char)( ctx->working_state[i] >> 24 );
+        keystream[offset     ] = (unsigned char)  working_state[i];
+        keystream[offset + 1U] = (unsigned char)( working_state[i] >> 8  );
+        keystream[offset + 2U] = (unsigned char)( working_state[i] >> 16 );
+        keystream[offset + 3U] = (unsigned char)( working_state[i] >> 24 );
     }
 }
 
@@ -245,6 +246,43 @@ int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx,
     return( 0 );
 }
 
+int mbedtls_chacha20_keystream_block( const mbedtls_chacha20_context *ctx,
+                                      uint32_t counter,
+                                      unsigned char keystream[64] )
+{
+    uint32_t initial_state[16];
+    uint32_t working_state[16];
+
+    if ( ( ctx == NULL ) || ( keystream == NULL ) )
+    {
+        return( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA );
+    }
+
+    initial_state[0]  = ctx->initial_state[0];
+    initial_state[1]  = ctx->initial_state[1];
+    initial_state[2]  = ctx->initial_state[2];
+    initial_state[3]  = ctx->initial_state[3];
+    initial_state[4]  = ctx->initial_state[4];
+    initial_state[5]  = ctx->initial_state[5];
+    initial_state[6]  = ctx->initial_state[6];
+    initial_state[7]  = ctx->initial_state[7];
+    initial_state[8]  = ctx->initial_state[8];
+    initial_state[9]  = ctx->initial_state[9];
+    initial_state[10] = ctx->initial_state[10];
+    initial_state[11] = ctx->initial_state[11];
+    initial_state[12] = counter;
+    initial_state[13] = ctx->initial_state[13];
+    initial_state[14] = ctx->initial_state[14];
+    initial_state[15] = ctx->initial_state[15];
+
+    mbedtls_chacha20_block( initial_state, working_state, keystream );
+
+    mbedtls_zeroize( initial_state, sizeof(initial_state) );
+    mbedtls_zeroize( working_state, sizeof(working_state) );
+
+    return ( 0 );
+}
+
 int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx,
                               size_t size,
                               const unsigned char *input,
@@ -271,7 +309,7 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx,
     /* Process full blocks */
     while ( size >= CHACHA20_BLOCK_SIZE_BYTES )
     {
-        mbedtls_chacha20_block( ctx, &output[offset] );
+        mbedtls_chacha20_block( ctx->initial_state, ctx->working_state, &output[offset] );
 
         for ( i = 0U; i < 64U; i += 8U )
         {
@@ -288,14 +326,14 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx,
         /* Increment counter */
         ctx->initial_state[CHACHA20_CTR_INDEX]++;
 
-        offset += 64U;
-        size   -= 64U;
+        offset += CHACHA20_BLOCK_SIZE_BYTES;
+        size   -= CHACHA20_BLOCK_SIZE_BYTES;
     }
 
     /* Last (partial) block */
     if ( size > 0U )
     {
-        mbedtls_chacha20_block( ctx, ctx->keystream8 );
+        mbedtls_chacha20_block( ctx->initial_state, ctx->working_state, ctx->keystream8 );
 
         for ( i = 0U; i < size; i++)
         {
diff --git a/library/error.c b/library/error.c
index 12bd2101b..d0a75ca5a 100644
--- a/library/error.c
+++ b/library/error.c
@@ -41,6 +41,10 @@
 
 #include <stdio.h>
 
+#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
+#include "mbedtls/aead_chacha20_poly1305.h"
+#endif
+
 #if defined(MBEDTLS_AES_C)
 #include "mbedtls/aes.h"
 #endif
@@ -575,6 +579,13 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
     // Low level error codes
     //
     // BEGIN generated code
+#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
+    if( use_ret == -(MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA) )
+        mbedtls_snprintf( buf, buflen, "AEAD_CHACHA20_POLY1305 - Invalid input parameter(s)" );
+    if( use_ret == -(MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE) )
+        mbedtls_snprintf( buf, buflen, "AEAD_CHACHA20_POLY1305 - The requested operation is not permitted in the current state" );
+#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_C */
+
 #if defined(MBEDTLS_AES_C)
     if( use_ret == -(MBEDTLS_ERR_AES_INVALID_KEY_LENGTH) )
         mbedtls_snprintf( buf, buflen, "AES - Invalid key length" );
diff --git a/library/version_features.c b/library/version_features.c
index babf2c782..64aa9f641 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -516,6 +516,9 @@ static const char *features[] = {
 #if defined(MBEDTLS_AES_C)
     "MBEDTLS_AES_C",
 #endif /* MBEDTLS_AES_C */
+#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
+    "MBEDTLS_AEAD_CHACHA20_POLY1305_C",
+#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_C */
 #if defined(MBEDTLS_ARC4_C)
     "MBEDTLS_ARC4_C",
 #endif /* MBEDTLS_ARC4_C */
diff --git a/scripts/generate_errors.pl b/scripts/generate_errors.pl
index 1dac39bf1..b5d141322 100755
--- a/scripts/generate_errors.pl
+++ b/scripts/generate_errors.pl
@@ -29,7 +29,7 @@ if( @ARGV ) {
 
 my $error_format_file = $data_dir.'/error.fmt';
 
-my @low_level_modules = qw( AES ARC4 ASN1 BASE64 BIGNUM BLOWFISH
+my @low_level_modules = qw( AEAD_CHACHA20_POLY1305 AES ARC4 ASN1 BASE64 BIGNUM BLOWFISH
                             CAMELLIA CCM CHACHA20 CMAC CTR_DRBG DES
                             ENTROPY GCM HMAC_DRBG MD2 MD4 MD5
                             NET OID PADLOCK PBKDF2 POLY1305 RIPEMD160
@@ -88,6 +88,7 @@ foreach my $line (@matches)
     $module_name = "BIGNUM" if ($module_name eq "MPI");
     $module_name = "CTR_DRBG" if ($module_name eq "CTR");
     $module_name = "HMAC_DRBG" if ($module_name eq "HMAC");
+    $module_name = "AEAD_CHACHA20_POLY1305" if ($module_name eq "AEAD");
 
     my $define_name = $module_name;
     $define_name = "X509_USE,X509_CREATE" if ($define_name eq "X509");
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 82f155419..03797ec32 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -44,6 +44,7 @@ if(MSVC)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX-")
 endif(MSVC)
 
+add_test_suite(aead_chacha20_poly1305)
 add_test_suite(aes aes.ecb)
 add_test_suite(aes aes.cbc)
 add_test_suite(aes aes.cfb)
diff --git a/tests/Makefile b/tests/Makefile
index 90b2028f5..4a23e64cc 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -45,7 +45,8 @@ ifdef ZLIB
 LOCAL_LDFLAGS += -lz
 endif
 
-APPS =	test_suite_aes.ecb$(EXEXT)	test_suite_aes.cbc$(EXEXT)	\
+APPS = test_suite_aead_chacha20_poly1305$(EXEXT)			\
+	test_suite_aes.ecb$(EXEXT)	test_suite_aes.cbc$(EXEXT)	\
 	test_suite_aes.cfb$(EXEXT)	test_suite_aes.rest$(EXEXT)	\
 	test_suite_arc4$(EXEXT)		test_suite_asn1write$(EXEXT)	\
 	test_suite_base64$(EXEXT)	test_suite_blowfish$(EXEXT)	\
@@ -203,6 +204,11 @@ test_suite_hmac_drbg.pr.c : suites/test_suite_hmac_drbg.function suites/test_sui
 	echo "  Gen   $@"
 	perl scripts/generate_code.pl suites $* $*
 
+
+test_suite_aead_chacha20_poly1305$(EXEXT): test_suite_aead_chacha20_poly1305.c $(DEP)
+	echo "  CC    $<"
+	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) $<	$(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
+
 test_suite_aes.ecb$(EXEXT): test_suite_aes.ecb.c $(DEP)
 	echo "  CC    $<"
 	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) $<	$(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
diff --git a/tests/suites/test_suite_aead_chacha20_poly1305.data b/tests/suites/test_suite_aead_chacha20_poly1305.data
new file mode 100644
index 000000000..1cbfa24da
--- /dev/null
+++ b/tests/suites/test_suite_aead_chacha20_poly1305.data
@@ -0,0 +1,19 @@
+ChaCha20-Poly1305 RFC 7539 Example and Test Vector (Encrypt)
+depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C
+mbedtls_aead_chacha20_poly1305_enc:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b6116":"1ae10b594f09e26a7e902ecbd0600691"
+
+ChaCha20-Poly1305 RFC 7539 Example and Test Vector (Encrypt)
+depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C
+mbedtls_aead_chacha20_poly1305_dec:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b6116":"4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":"1ae10b594f09e26a7e902ecbd0600691"
+
+ChaCha20-Poly1305 RFC 7539 Test Vector #1 (Encrypt)
+depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C
+mbedtls_aead_chacha20_poly1305_enc:"1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cbc207075c0":"000000000102030405060708":"f33388860000000000004e91":"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":"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":"eead9d67890cbb22392336fea1851f38"
+
+ChaCha20-Poly1305 RFC 7539 Test Vector #1 (Decrypt)
+depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C
+mbedtls_aead_chacha20_poly1305_dec:"1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cbc207075c0":"000000000102030405060708":"f33388860000000000004e91":"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":"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":"eead9d67890cbb22392336fea1851f38"
+
+ChaCha20-Poly1305 Selftest
+depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C:MBEDTLS_SELF_TEST
+aead_chacha20_poly1305_selftest:
diff --git a/tests/suites/test_suite_aead_chacha20_poly1305.function b/tests/suites/test_suite_aead_chacha20_poly1305.function
new file mode 100644
index 000000000..6abd05414
--- /dev/null
+++ b/tests/suites/test_suite_aead_chacha20_poly1305.function
@@ -0,0 +1,109 @@
+/* BEGIN_HEADER */
+#include "mbedtls/aead_chacha20_poly1305.h"
+/* END_HEADER */
+
+/* BEGIN_DEPENDENCIES
+ * depends_on:MBEDTLS_AEAD_CHACHA20_POLY1305_C
+ * END_DEPENDENCIES
+ */
+
+/* BEGIN_CASE */
+void mbedtls_aead_chacha20_poly1305_enc( char *hex_key_string, char *hex_nonce_string, char *hex_aad_string, char *hex_input_string, char *hex_output_string, char *hex_mac_string )
+{
+    unsigned char key_str[32];
+    unsigned char nonce_str[12];
+    unsigned char aad_str[10000];
+    unsigned char input_str[10000];
+    unsigned char output_str[10000];
+    unsigned char mac_str[16];
+    unsigned char output[10000];
+    unsigned char mac[16];
+    size_t input_len;
+    size_t output_len;
+    size_t aad_len;
+    size_t key_len;
+    size_t nonce_len;
+    size_t mac_len;
+
+    memset( key_str,     0x00, 32    );
+    memset( nonce_str,   0x00, 12    );
+    memset( aad_str,     0x00, 10000 );
+    memset( input_str,   0x00, 10000 );
+    memset( output_str,  0x00, 10000 );
+    memset( mac_str,     0x00, 16    );
+
+    aad_len    = unhexify( aad_str,    hex_aad_string    );
+    input_len  = unhexify( input_str,  hex_input_string  );
+    output_len = unhexify( output_str, hex_output_string );
+    key_len    = unhexify( key_str,    hex_key_string    );
+    nonce_len  = unhexify( nonce_str,  hex_nonce_string  );
+    mac_len    = unhexify( mac_str,    hex_mac_string    );
+
+    TEST_ASSERT( key_len   == 32 );
+    TEST_ASSERT( nonce_len == 12 );
+    TEST_ASSERT( mac_len   == 16 );
+
+    mbedtls_aead_chacha20_poly1305_crypt_and_mac( key_str, nonce_str,
+                                                  MBEDTLS_AEAD_CHACHA20_POLY1305_ENCRYPT,
+                                                  aad_len, aad_str,
+                                                  input_len, input_str, output,
+                                                  mac );
+
+    TEST_ASSERT( memcmp( output_str, output, output_len ) == 0 );
+    TEST_ASSERT( memcmp( mac_str, mac, 16U ) == 0 );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void mbedtls_aead_chacha20_poly1305_dec( char *hex_key_string, char *hex_nonce_string, char *hex_aad_string, char *hex_input_string, char *hex_output_string, char *hex_mac_string )
+{
+    unsigned char key_str[32];
+    unsigned char nonce_str[12];
+    unsigned char aad_str[10000];
+    unsigned char input_str[10000];
+    unsigned char output_str[10000];
+    unsigned char mac_str[16];
+    unsigned char output[10000];
+    unsigned char mac[16];
+    size_t input_len;
+    size_t output_len;
+    size_t aad_len;
+    size_t key_len;
+    size_t nonce_len;
+    size_t mac_len;
+
+    memset( key_str,     0x00, 32    );
+    memset( nonce_str,   0x00, 12    );
+    memset( aad_str,     0x00, 10000 );
+    memset( input_str,   0x00, 10000 );
+    memset( output_str,  0x00, 10000 );
+    memset( mac_str,     0x00, 16    );
+
+    aad_len    = unhexify( aad_str,    hex_aad_string    );
+    input_len  = unhexify( input_str,  hex_input_string  );
+    output_len = unhexify( output_str, hex_output_string );
+    key_len    = unhexify( key_str,    hex_key_string    );
+    nonce_len  = unhexify( nonce_str,  hex_nonce_string  );
+    mac_len    = unhexify( mac_str,    hex_mac_string    );
+
+    TEST_ASSERT( key_len   == 32 );
+    TEST_ASSERT( nonce_len == 12 );
+    TEST_ASSERT( mac_len   == 16 );
+
+    mbedtls_aead_chacha20_poly1305_crypt_and_mac( key_str, nonce_str,
+                                                  MBEDTLS_AEAD_CHACHA20_POLY1305_DECRYPT,
+                                                  aad_len, aad_str,
+                                                  input_len, input_str, output,
+                                                  mac );
+
+    TEST_ASSERT( memcmp( output_str, output, output_len ) == 0 );
+    TEST_ASSERT( memcmp( mac_str, mac, 16U ) == 0 );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
+void aead_chacha20_poly1305_selftest()
+{
+    TEST_ASSERT( mbedtls_aead_chacha20_poly1305_self_test( 1 ) == 0 );
+}
+/* END_CASE */