diff --git a/library/psa_crypto_cipher.c b/library/psa_crypto_cipher.c
new file mode 100644
index 0000000..881d673
--- /dev/null
+++ b/library/psa_crypto_cipher.c
@@ -0,0 +1,724 @@
+/*
+ *  PSA cipher driver entry points
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include "common.h"
+
+#if defined(MBEDTLS_PSA_CRYPTO_C)
+
+#include "psa_crypto_cipher.h"
+#include "psa_crypto_core.h"
+#include "psa_crypto_random_impl.h"
+
+#include "mbedtls/cipher.h"
+#include "mbedtls/error.h"
+
+#include <string.h>
+
+/* mbedtls_cipher_values_from_psa() below only checks if the proper build symbols
+ * are enabled, but it does not provide any compatibility check between them
+ * (i.e. if the specified key works with the specified algorithm). This helper
+ * function is meant to provide this support.
+ * mbedtls_cipher_info_from_psa() might be used for the same purpose, but it
+ * requires CIPHER_C to be enabled.
+ */
+static psa_status_t mbedtls_cipher_validate_values(
+    psa_algorithm_t alg,
+    psa_key_type_t key_type)
+{
+    /* Reduce code size - hinting to the compiler about what it can assume allows the compiler to
+       eliminate bits of the logic below. */
+#if !defined(PSA_WANT_KEY_TYPE_AES)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_AES);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_ARIA)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_ARIA);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_CAMELLIA)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CAMELLIA);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_CHACHA20)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CHACHA20);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_DES)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_DES);
+#endif
+#if !defined(PSA_WANT_ALG_CCM)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0));
+#endif
+#if !defined(PSA_WANT_ALG_GCM)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0));
+#endif
+#if !defined(PSA_WANT_ALG_STREAM_CIPHER)
+    MBEDTLS_ASSUME(alg != PSA_ALG_STREAM_CIPHER);
+#endif
+#if !defined(PSA_WANT_ALG_CHACHA20_POLY1305)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0));
+#endif
+#if !defined(PSA_WANT_ALG_CCM_STAR_NO_TAG)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CCM_STAR_NO_TAG);
+#endif
+#if !defined(PSA_WANT_ALG_CTR)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CTR);
+#endif
+#if !defined(PSA_WANT_ALG_CFB)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CFB);
+#endif
+#if !defined(PSA_WANT_ALG_OFB)
+    MBEDTLS_ASSUME(alg != PSA_ALG_OFB);
+#endif
+#if !defined(PSA_WANT_ALG_XTS)
+    MBEDTLS_ASSUME(alg != PSA_ALG_XTS);
+#endif
+#if !defined(PSA_WANT_ALG_ECB_NO_PADDING)
+    MBEDTLS_ASSUME(alg != PSA_ALG_ECB_NO_PADDING);
+#endif
+#if !defined(PSA_WANT_ALG_CBC_NO_PADDING)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CBC_NO_PADDING);
+#endif
+#if !defined(PSA_WANT_ALG_CBC_PKCS7)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CBC_PKCS7);
+#endif
+#if !defined(PSA_WANT_ALG_CMAC)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CMAC);
+#endif
+
+    if (alg == PSA_ALG_STREAM_CIPHER ||
+        alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0)) {
+        if (key_type == PSA_KEY_TYPE_CHACHA20) {
+            return PSA_SUCCESS;
+        }
+    }
+
+    if (alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0) ||
+        alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0) ||
+        alg == PSA_ALG_CCM_STAR_NO_TAG) {
+        if (key_type == PSA_KEY_TYPE_AES ||
+            key_type == PSA_KEY_TYPE_ARIA ||
+            key_type == PSA_KEY_TYPE_CAMELLIA) {
+            return PSA_SUCCESS;
+        }
+    }
+
+    if (alg == PSA_ALG_CTR ||
+        alg == PSA_ALG_CFB ||
+        alg == PSA_ALG_OFB ||
+        alg == PSA_ALG_XTS ||
+        alg == PSA_ALG_ECB_NO_PADDING ||
+        alg == PSA_ALG_CBC_NO_PADDING ||
+        alg == PSA_ALG_CBC_PKCS7 ||
+        alg == PSA_ALG_CMAC) {
+        if (key_type == PSA_KEY_TYPE_AES ||
+            key_type == PSA_KEY_TYPE_ARIA ||
+            key_type == PSA_KEY_TYPE_DES ||
+            key_type == PSA_KEY_TYPE_CAMELLIA) {
+            return PSA_SUCCESS;
+        }
+    }
+
+    return PSA_ERROR_NOT_SUPPORTED;
+}
+
+psa_status_t mbedtls_cipher_values_from_psa(
+    psa_algorithm_t alg,
+    psa_key_type_t key_type,
+    size_t *key_bits,
+    mbedtls_cipher_mode_t *mode,
+    mbedtls_cipher_id_t *cipher_id)
+{
+    mbedtls_cipher_id_t cipher_id_tmp;
+    /* Only DES modifies key_bits */
+#if !defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
+    (void) key_bits;
+#endif
+
+    if (PSA_ALG_IS_AEAD(alg)) {
+        alg = PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg, 0);
+    }
+
+    if (PSA_ALG_IS_CIPHER(alg) || PSA_ALG_IS_AEAD(alg)) {
+        switch (alg) {
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_STREAM_CIPHER)
+            case PSA_ALG_STREAM_CIPHER:
+                *mode = MBEDTLS_MODE_STREAM;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CTR)
+            case PSA_ALG_CTR:
+                *mode = MBEDTLS_MODE_CTR;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CFB)
+            case PSA_ALG_CFB:
+                *mode = MBEDTLS_MODE_CFB;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_OFB)
+            case PSA_ALG_OFB:
+                *mode = MBEDTLS_MODE_OFB;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING)
+            case PSA_ALG_ECB_NO_PADDING:
+                *mode = MBEDTLS_MODE_ECB;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_NO_PADDING)
+            case PSA_ALG_CBC_NO_PADDING:
+                *mode = MBEDTLS_MODE_CBC;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_PKCS7)
+            case PSA_ALG_CBC_PKCS7:
+                *mode = MBEDTLS_MODE_CBC;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM_STAR_NO_TAG)
+            case PSA_ALG_CCM_STAR_NO_TAG:
+                *mode = MBEDTLS_MODE_CCM_STAR_NO_TAG;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+            case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0):
+                *mode = MBEDTLS_MODE_CCM;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_GCM)
+            case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0):
+                *mode = MBEDTLS_MODE_GCM;
+                break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
+            case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0):
+                *mode = MBEDTLS_MODE_CHACHAPOLY;
+                break;
+#endif
+            default:
+                return PSA_ERROR_NOT_SUPPORTED;
+        }
+    } else if (alg == PSA_ALG_CMAC) {
+        *mode = MBEDTLS_MODE_ECB;
+    } else {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+
+    switch (key_type) {
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_AES)
+        case PSA_KEY_TYPE_AES:
+            cipher_id_tmp = MBEDTLS_CIPHER_ID_AES;
+            break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ARIA)
+        case PSA_KEY_TYPE_ARIA:
+            cipher_id_tmp = MBEDTLS_CIPHER_ID_ARIA;
+            break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
+        case PSA_KEY_TYPE_DES:
+            /* key_bits is 64 for Single-DES, 128 for two-key Triple-DES,
+             * and 192 for three-key Triple-DES. */
+            if (*key_bits == 64) {
+                cipher_id_tmp = MBEDTLS_CIPHER_ID_DES;
+            } else {
+                cipher_id_tmp = MBEDTLS_CIPHER_ID_3DES;
+            }
+            /* mbedtls doesn't recognize two-key Triple-DES as an algorithm,
+             * but two-key Triple-DES is functionally three-key Triple-DES
+             * with K1=K3, so that's how we present it to mbedtls. */
+            if (*key_bits == 128) {
+                *key_bits = 192;
+            }
+            break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_CAMELLIA)
+        case PSA_KEY_TYPE_CAMELLIA:
+            cipher_id_tmp = MBEDTLS_CIPHER_ID_CAMELLIA;
+            break;
+#endif
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_CHACHA20)
+        case PSA_KEY_TYPE_CHACHA20:
+            cipher_id_tmp = MBEDTLS_CIPHER_ID_CHACHA20;
+            break;
+#endif
+        default:
+            return PSA_ERROR_NOT_SUPPORTED;
+    }
+    if (cipher_id != NULL) {
+        *cipher_id = cipher_id_tmp;
+    }
+
+    return mbedtls_cipher_validate_values(alg, key_type);
+}
+
+#if defined(MBEDTLS_CIPHER_C)
+const mbedtls_cipher_info_t *mbedtls_cipher_info_from_psa(
+    psa_algorithm_t alg,
+    psa_key_type_t key_type,
+    size_t key_bits,
+    mbedtls_cipher_id_t *cipher_id)
+{
+    mbedtls_cipher_mode_t mode;
+    psa_status_t status;
+    mbedtls_cipher_id_t cipher_id_tmp;
+
+    status = mbedtls_cipher_values_from_psa(alg, key_type, &key_bits, &mode, &cipher_id_tmp);
+    if (status != PSA_SUCCESS) {
+        return NULL;
+    }
+    if (cipher_id != NULL) {
+        *cipher_id = cipher_id_tmp;
+    }
+
+    return mbedtls_cipher_info_from_values(cipher_id_tmp, (int) key_bits, mode);
+}
+#endif /* MBEDTLS_CIPHER_C */
+
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+
+static psa_status_t psa_cipher_setup(
+    mbedtls_psa_cipher_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg,
+    mbedtls_operation_t cipher_operation)
+{
+    int ret = 0;
+    size_t key_bits;
+    const mbedtls_cipher_info_t *cipher_info = NULL;
+    psa_key_type_t key_type = attributes->type;
+
+    (void) key_buffer_size;
+
+    mbedtls_cipher_init(&operation->ctx.cipher);
+
+    operation->alg = alg;
+    key_bits = attributes->bits;
+    cipher_info = mbedtls_cipher_info_from_psa(alg, key_type,
+                                               key_bits, NULL);
+    if (cipher_info == NULL) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+
+    ret = mbedtls_cipher_setup(&operation->ctx.cipher, cipher_info);
+    if (ret != 0) {
+        goto exit;
+    }
+
+#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
+    if (key_type == PSA_KEY_TYPE_DES && key_bits == 128) {
+        /* Two-key Triple-DES is 3-key Triple-DES with K1=K3 */
+        uint8_t keys[24];
+        memcpy(keys, key_buffer, 16);
+        memcpy(keys + 16, key_buffer, 8);
+        ret = mbedtls_cipher_setkey(&operation->ctx.cipher,
+                                    keys,
+                                    192, cipher_operation);
+    } else
+#endif
+    {
+        ret = mbedtls_cipher_setkey(&operation->ctx.cipher, key_buffer,
+                                    (int) key_bits, cipher_operation);
+    }
+    if (ret != 0) {
+        goto exit;
+    }
+
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_NO_PADDING) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_PKCS7)
+    switch (alg) {
+        case PSA_ALG_CBC_NO_PADDING:
+            ret = mbedtls_cipher_set_padding_mode(&operation->ctx.cipher,
+                                                  MBEDTLS_PADDING_NONE);
+            break;
+        case PSA_ALG_CBC_PKCS7:
+            ret = mbedtls_cipher_set_padding_mode(&operation->ctx.cipher,
+                                                  MBEDTLS_PADDING_PKCS7);
+            break;
+        default:
+            /* The algorithm doesn't involve padding. */
+            ret = 0;
+            break;
+    }
+    if (ret != 0) {
+        goto exit;
+    }
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CBC_NO_PADDING ||
+          MBEDTLS_PSA_BUILTIN_ALG_CBC_PKCS7 */
+
+    operation->block_length = (PSA_ALG_IS_STREAM_CIPHER(alg) ? 1 :
+                               PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type));
+    operation->iv_length = PSA_CIPHER_IV_LENGTH(key_type, alg);
+
+exit:
+    return mbedtls_to_psa_error(ret);
+}
+
+psa_status_t mbedtls_psa_cipher_encrypt_setup(
+    mbedtls_psa_cipher_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg)
+{
+    return psa_cipher_setup(operation, attributes,
+                            key_buffer, key_buffer_size,
+                            alg, MBEDTLS_ENCRYPT);
+}
+
+psa_status_t mbedtls_psa_cipher_decrypt_setup(
+    mbedtls_psa_cipher_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg)
+{
+    return psa_cipher_setup(operation, attributes,
+                            key_buffer, key_buffer_size,
+                            alg, MBEDTLS_DECRYPT);
+}
+
+psa_status_t mbedtls_psa_cipher_set_iv(
+    mbedtls_psa_cipher_operation_t *operation,
+    const uint8_t *iv, size_t iv_length)
+{
+    if (iv_length != operation->iv_length) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
+
+    return mbedtls_to_psa_error(
+        mbedtls_cipher_set_iv(&operation->ctx.cipher,
+                              iv, iv_length));
+}
+
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING)
+/** Process input for which the algorithm is set to ECB mode.
+ *
+ * This requires manual processing, since the PSA API is defined as being
+ * able to process arbitrary-length calls to psa_cipher_update() with ECB mode,
+ * but the underlying mbedtls_cipher_update only takes full blocks.
+ *
+ * \param ctx           The mbedtls cipher context to use. It must have been
+ *                      set up for ECB.
+ * \param[in] input     The input plaintext or ciphertext to process.
+ * \param input_length  The number of bytes to process from \p input.
+ *                      This does not need to be aligned to a block boundary.
+ *                      If there is a partial block at the end of the input,
+ *                      it is stored in \p ctx for future processing.
+ * \param output        The buffer where the output is written. It must be
+ *                      at least `BS * floor((p + input_length) / BS)` bytes
+ *                      long, where `p` is the number of bytes in the
+ *                      unprocessed partial block in \p ctx (with
+ *                      `0 <= p <= BS - 1`) and `BS` is the block size.
+ * \param output_length On success, the number of bytes written to \p output.
+ *                      \c 0 on error.
+ *
+ * \return #PSA_SUCCESS or an error from a hardware accelerator
+ */
+static psa_status_t psa_cipher_update_ecb(
+    mbedtls_cipher_context_t *ctx,
+    const uint8_t *input,
+    size_t input_length,
+    uint8_t *output,
+    size_t *output_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    size_t block_size = mbedtls_cipher_info_get_block_size(ctx->cipher_info);
+    size_t internal_output_length = 0;
+    *output_length = 0;
+
+    if (input_length == 0) {
+        status = PSA_SUCCESS;
+        goto exit;
+    }
+
+    if (ctx->unprocessed_len > 0) {
+        /* Fill up to block size, and run the block if there's a full one. */
+        size_t bytes_to_copy = block_size - ctx->unprocessed_len;
+
+        if (input_length < bytes_to_copy) {
+            bytes_to_copy = input_length;
+        }
+
+        memcpy(&(ctx->unprocessed_data[ctx->unprocessed_len]),
+               input, bytes_to_copy);
+        input_length -= bytes_to_copy;
+        input += bytes_to_copy;
+        ctx->unprocessed_len += bytes_to_copy;
+
+        if (ctx->unprocessed_len == block_size) {
+            status = mbedtls_to_psa_error(
+                mbedtls_cipher_update(ctx,
+                                      ctx->unprocessed_data,
+                                      block_size,
+                                      output, &internal_output_length));
+
+            if (status != PSA_SUCCESS) {
+                goto exit;
+            }
+
+            output += internal_output_length;
+            *output_length += internal_output_length;
+            ctx->unprocessed_len = 0;
+        }
+    }
+
+    while (input_length >= block_size) {
+        /* Run all full blocks we have, one by one */
+        status = mbedtls_to_psa_error(
+            mbedtls_cipher_update(ctx, input,
+                                  block_size,
+                                  output, &internal_output_length));
+
+        if (status != PSA_SUCCESS) {
+            goto exit;
+        }
+
+        input_length -= block_size;
+        input += block_size;
+
+        output += internal_output_length;
+        *output_length += internal_output_length;
+    }
+
+    if (input_length > 0) {
+        /* Save unprocessed bytes for later processing */
+        memcpy(&(ctx->unprocessed_data[ctx->unprocessed_len]),
+               input, input_length);
+        ctx->unprocessed_len += input_length;
+    }
+
+    status = PSA_SUCCESS;
+
+exit:
+    return status;
+}
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING */
+
+psa_status_t mbedtls_psa_cipher_update(
+    mbedtls_psa_cipher_operation_t *operation,
+    const uint8_t *input, size_t input_length,
+    uint8_t *output, size_t output_size, size_t *output_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    size_t expected_output_size;
+
+    if (!PSA_ALG_IS_STREAM_CIPHER(operation->alg)) {
+        /* Take the unprocessed partial block left over from previous
+         * update calls, if any, plus the input to this call. Remove
+         * the last partial block, if any. You get the data that will be
+         * output in this call. */
+        expected_output_size =
+            (operation->ctx.cipher.unprocessed_len + input_length)
+            / operation->block_length * operation->block_length;
+    } else {
+        expected_output_size = input_length;
+    }
+
+    if (output_size < expected_output_size) {
+        return PSA_ERROR_BUFFER_TOO_SMALL;
+    }
+
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING)
+    if (operation->alg == PSA_ALG_ECB_NO_PADDING) {
+        /* mbedtls_cipher_update has an API inconsistency: it will only
+         * process a single block at a time in ECB mode. Abstract away that
+         * inconsistency here to match the PSA API behaviour. */
+        status = psa_cipher_update_ecb(&operation->ctx.cipher,
+                                       input,
+                                       input_length,
+                                       output,
+                                       output_length);
+    } else
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING */
+    if (input_length == 0) {
+        /* There is no input, nothing to be done */
+        *output_length = 0;
+        status = PSA_SUCCESS;
+    } else {
+        status = mbedtls_to_psa_error(
+            mbedtls_cipher_update(&operation->ctx.cipher, input,
+                                  input_length, output, output_length));
+
+        if (*output_length > output_size) {
+            return PSA_ERROR_CORRUPTION_DETECTED;
+        }
+    }
+
+    return status;
+}
+
+psa_status_t mbedtls_psa_cipher_finish(
+    mbedtls_psa_cipher_operation_t *operation,
+    uint8_t *output, size_t output_size, size_t *output_length)
+{
+    psa_status_t status = PSA_ERROR_GENERIC_ERROR;
+    uint8_t temp_output_buffer[MBEDTLS_MAX_BLOCK_LENGTH];
+
+    if (operation->ctx.cipher.unprocessed_len != 0) {
+        if (operation->alg == PSA_ALG_ECB_NO_PADDING ||
+            operation->alg == PSA_ALG_CBC_NO_PADDING) {
+            status = PSA_ERROR_INVALID_ARGUMENT;
+            goto exit;
+        }
+    }
+
+    status = mbedtls_to_psa_error(
+        mbedtls_cipher_finish(&operation->ctx.cipher,
+                              temp_output_buffer,
+                              output_length));
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    if (*output_length == 0) {
+        ; /* Nothing to copy. Note that output may be NULL in this case. */
+    } else if (output_size >= *output_length) {
+        memcpy(output, temp_output_buffer, *output_length);
+    } else {
+        status = PSA_ERROR_BUFFER_TOO_SMALL;
+    }
+
+exit:
+    mbedtls_platform_zeroize(temp_output_buffer,
+                             sizeof(temp_output_buffer));
+
+    return status;
+}
+
+psa_status_t mbedtls_psa_cipher_abort(
+    mbedtls_psa_cipher_operation_t *operation)
+{
+    /* Sanity check (shouldn't happen: operation->alg should
+     * always have been initialized to a valid value). */
+    if (!PSA_ALG_IS_CIPHER(operation->alg)) {
+        return PSA_ERROR_BAD_STATE;
+    }
+
+    mbedtls_cipher_free(&operation->ctx.cipher);
+
+    return PSA_SUCCESS;
+}
+
+psa_status_t mbedtls_psa_cipher_encrypt(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer,
+    size_t key_buffer_size,
+    psa_algorithm_t alg,
+    const uint8_t *iv,
+    size_t iv_length,
+    const uint8_t *input,
+    size_t input_length,
+    uint8_t *output,
+    size_t output_size,
+    size_t *output_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
+    size_t update_output_length, finish_output_length;
+
+    status = mbedtls_psa_cipher_encrypt_setup(&operation, attributes,
+                                              key_buffer, key_buffer_size,
+                                              alg);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    if (iv_length > 0) {
+        status = mbedtls_psa_cipher_set_iv(&operation, iv, iv_length);
+        if (status != PSA_SUCCESS) {
+            goto exit;
+        }
+    }
+
+    status = mbedtls_psa_cipher_update(&operation, input, input_length,
+                                       output, output_size,
+                                       &update_output_length);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    status = mbedtls_psa_cipher_finish(
+        &operation,
+        mbedtls_buffer_offset(output, update_output_length),
+        output_size - update_output_length, &finish_output_length);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    *output_length = update_output_length + finish_output_length;
+
+exit:
+    if (status == PSA_SUCCESS) {
+        status = mbedtls_psa_cipher_abort(&operation);
+    } else {
+        mbedtls_psa_cipher_abort(&operation);
+    }
+
+    return status;
+}
+
+psa_status_t mbedtls_psa_cipher_decrypt(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer,
+    size_t key_buffer_size,
+    psa_algorithm_t alg,
+    const uint8_t *input,
+    size_t input_length,
+    uint8_t *output,
+    size_t output_size,
+    size_t *output_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
+    size_t olength, accumulated_length;
+
+    status = mbedtls_psa_cipher_decrypt_setup(&operation, attributes,
+                                              key_buffer, key_buffer_size,
+                                              alg);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    if (operation.iv_length > 0) {
+        status = mbedtls_psa_cipher_set_iv(&operation,
+                                           input, operation.iv_length);
+        if (status != PSA_SUCCESS) {
+            goto exit;
+        }
+    }
+
+    status = mbedtls_psa_cipher_update(
+        &operation,
+        mbedtls_buffer_offset_const(input, operation.iv_length),
+        input_length - operation.iv_length,
+        output, output_size, &olength);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    accumulated_length = olength;
+
+    status = mbedtls_psa_cipher_finish(
+        &operation,
+        mbedtls_buffer_offset(output, accumulated_length),
+        output_size - accumulated_length, &olength);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    *output_length = accumulated_length + olength;
+
+exit:
+    if (status == PSA_SUCCESS) {
+        status = mbedtls_psa_cipher_abort(&operation);
+    } else {
+        mbedtls_psa_cipher_abort(&operation);
+    }
+
+    return status;
+}
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#endif /* MBEDTLS_PSA_CRYPTO_C */