diff --git a/drivers/auth/mbedtls/mbedtls_crypto.mk b/drivers/auth/mbedtls/mbedtls_crypto.mk
index 2a9fbbf..bd36730 100644
--- a/drivers/auth/mbedtls/mbedtls_crypto.mk
+++ b/drivers/auth/mbedtls/mbedtls_crypto.mk
@@ -1,11 +1,16 @@
 #
-# Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
 include drivers/auth/mbedtls/mbedtls_common.mk
 
-MBEDTLS_SOURCES	+=		drivers/auth/mbedtls/mbedtls_crypto.c
-
-
+ifeq (${PSA_CRYPTO},1)
+	# Some of the PSA functions are declared in multiple header files
+	# that triggers this warning.
+	TF_CFLAGS      	+=     	-Wno-error=redundant-decls
+	MBEDTLS_SOURCES +=	drivers/auth/mbedtls/mbedtls_psa_crypto.c
+else
+	MBEDTLS_SOURCES +=	drivers/auth/mbedtls/mbedtls_crypto.c
+endif
diff --git a/drivers/auth/mbedtls/mbedtls_psa_crypto.c b/drivers/auth/mbedtls/mbedtls_psa_crypto.c
new file mode 100644
index 0000000..eaeca79
--- /dev/null
+++ b/drivers/auth/mbedtls/mbedtls_psa_crypto.c
@@ -0,0 +1,423 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stddef.h>
+#include <string.h>
+
+/* mbed TLS headers */
+#include <mbedtls/gcm.h>
+#include <mbedtls/md.h>
+#include <mbedtls/memory_buffer_alloc.h>
+#include <mbedtls/oid.h>
+#include <mbedtls/platform.h>
+#include <mbedtls/version.h>
+#include <mbedtls/x509.h>
+
+#include <common/debug.h>
+#include <drivers/auth/crypto_mod.h>
+#include <drivers/auth/mbedtls/mbedtls_common.h>
+
+#include <plat/common/platform.h>
+
+#define LIB_NAME		"mbed TLS PSA"
+
+#if CRYPTO_SUPPORT == CRYPTO_HASH_CALC_ONLY || \
+CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+/*
+ * CRYPTO_MD_MAX_SIZE value is as per current stronger algorithm available
+ * so make sure that mbed TLS MD maximum size must be lesser than this.
+ */
+CASSERT(CRYPTO_MD_MAX_SIZE >= MBEDTLS_MD_MAX_SIZE,
+	assert_mbedtls_md_size_overflow);
+
+#endif /*
+	* CRYPTO_SUPPORT == CRYPTO_HASH_CALC_ONLY || \
+	* CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+	*/
+
+/*
+ * AlgorithmIdentifier  ::=  SEQUENCE  {
+ *     algorithm               OBJECT IDENTIFIER,
+ *     parameters              ANY DEFINED BY algorithm OPTIONAL
+ * }
+ *
+ * SubjectPublicKeyInfo  ::=  SEQUENCE  {
+ *     algorithm            AlgorithmIdentifier,
+ *     subjectPublicKey     BIT STRING
+ * }
+ *
+ * DigestInfo ::= SEQUENCE {
+ *     digestAlgorithm AlgorithmIdentifier,
+ *     digest OCTET STRING
+ * }
+ */
+
+/*
+ * Initialize the library and export the descriptor
+ */
+static void init(void)
+{
+	/* Initialize mbed TLS */
+	mbedtls_init();
+}
+
+#if CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_ONLY || \
+CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+/*
+ * Verify a signature.
+ *
+ * Parameters are passed using the DER encoding format following the ASN.1
+ * structures detailed above.
+ */
+static int verify_signature(void *data_ptr, unsigned int data_len,
+			    void *sig_ptr, unsigned int sig_len,
+			    void *sig_alg, unsigned int sig_alg_len,
+			    void *pk_ptr, unsigned int pk_len)
+{
+	mbedtls_asn1_buf sig_oid, sig_params;
+	mbedtls_asn1_buf signature;
+	mbedtls_md_type_t md_alg;
+	mbedtls_pk_type_t pk_alg;
+	mbedtls_pk_context pk = {0};
+	int rc;
+	void *sig_opts = NULL;
+	const mbedtls_md_info_t *md_info;
+	unsigned char *p, *end;
+	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
+
+	/* Get pointers to signature OID and parameters */
+	p = (unsigned char *)sig_alg;
+	end = (unsigned char *)(p + sig_alg_len);
+	rc = mbedtls_asn1_get_alg(&p, end, &sig_oid, &sig_params);
+	if (rc != 0) {
+		return CRYPTO_ERR_SIGNATURE;
+	}
+
+	/* Get the actual signature algorithm (MD + PK) */
+	rc = mbedtls_x509_get_sig_alg(&sig_oid, &sig_params, &md_alg, &pk_alg, &sig_opts);
+	if (rc != 0) {
+		return CRYPTO_ERR_SIGNATURE;
+	}
+
+	/* Parse the public key */
+	mbedtls_pk_init(&pk);
+	p = (unsigned char *)pk_ptr;
+	end = (unsigned char *)(p + pk_len);
+	rc = mbedtls_pk_parse_subpubkey(&p, end, &pk);
+	if (rc != 0) {
+		rc = CRYPTO_ERR_SIGNATURE;
+		goto end2;
+	}
+
+	/* Get the signature (bitstring) */
+	p = (unsigned char *)sig_ptr;
+	end = (unsigned char *)(p + sig_len);
+	signature.tag = *p;
+	rc = mbedtls_asn1_get_bitstring_null(&p, end, &signature.len);
+	if ((rc != 0) || ((size_t)(end - p) != signature.len)) {
+		rc = CRYPTO_ERR_SIGNATURE;
+		goto end1;
+	}
+	signature.p = p;
+
+	/* Calculate the hash of the data */
+	md_info = mbedtls_md_info_from_type(md_alg);
+	if (md_info == NULL) {
+		rc = CRYPTO_ERR_SIGNATURE;
+		goto end1;
+	}
+	p = (unsigned char *)data_ptr;
+	rc = mbedtls_md(md_info, p, data_len, hash);
+	if (rc != 0) {
+		rc = CRYPTO_ERR_SIGNATURE;
+		goto end1;
+	}
+
+	/* Verify the signature */
+	rc = mbedtls_pk_verify_ext(pk_alg, sig_opts, &pk, md_alg, hash,
+			mbedtls_md_get_size(md_info),
+			signature.p, signature.len);
+	if (rc != 0) {
+		rc = CRYPTO_ERR_SIGNATURE;
+		goto end1;
+	}
+
+	/* Signature verification success */
+	rc = CRYPTO_SUCCESS;
+
+end1:
+	mbedtls_pk_free(&pk);
+end2:
+	mbedtls_free(sig_opts);
+	return rc;
+}
+
+/*
+ * Match a hash
+ *
+ * Digest info is passed in DER format following the ASN.1 structure detailed
+ * above.
+ */
+static int verify_hash(void *data_ptr, unsigned int data_len,
+		       void *digest_info_ptr, unsigned int digest_info_len)
+{
+	mbedtls_asn1_buf hash_oid, params;
+	mbedtls_md_type_t md_alg;
+	const mbedtls_md_info_t *md_info;
+	unsigned char *p, *end, *hash;
+	unsigned char data_hash[MBEDTLS_MD_MAX_SIZE];
+	size_t len;
+	int rc;
+
+	/*
+	 * Digest info should be an MBEDTLS_ASN1_SEQUENCE, but padding after
+	 * it is allowed.  This is necessary to support multiple hash
+	 * algorithms.
+	 */
+	p = (unsigned char *)digest_info_ptr;
+	end = p + digest_info_len;
+	rc = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_CONSTRUCTED |
+				  MBEDTLS_ASN1_SEQUENCE);
+	if (rc != 0) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	end = p + len;
+
+	/* Get the hash algorithm */
+	rc = mbedtls_asn1_get_alg(&p, end, &hash_oid, &params);
+	if (rc != 0) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	rc = mbedtls_oid_get_md_alg(&hash_oid, &md_alg);
+	if (rc != 0) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	md_info = mbedtls_md_info_from_type(md_alg);
+	if (md_info == NULL) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	/* Hash should be octet string type and consume all bytes */
+	rc = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_OCTET_STRING);
+	if ((rc != 0) || ((size_t)(end - p) != len)) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	/* Length of hash must match the algorithm's size */
+	if (len != mbedtls_md_get_size(md_info)) {
+		return CRYPTO_ERR_HASH;
+	}
+	hash = p;
+
+	/* Calculate the hash of the data */
+	p = (unsigned char *)data_ptr;
+	rc = mbedtls_md(md_info, p, data_len, data_hash);
+	if (rc != 0) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	/* Compare values */
+	rc = memcmp(data_hash, hash, mbedtls_md_get_size(md_info));
+	if (rc != 0) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	return CRYPTO_SUCCESS;
+}
+#endif /*
+	* CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_ONLY || \
+	* CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+	*/
+
+#if CRYPTO_SUPPORT == CRYPTO_HASH_CALC_ONLY || \
+CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+/*
+ * Map a generic crypto message digest algorithm to the corresponding macro used
+ * by Mbed TLS.
+ */
+static inline mbedtls_md_type_t md_type(enum crypto_md_algo algo)
+{
+	switch (algo) {
+	case CRYPTO_MD_SHA512:
+		return MBEDTLS_MD_SHA512;
+	case CRYPTO_MD_SHA384:
+		return MBEDTLS_MD_SHA384;
+	case CRYPTO_MD_SHA256:
+		return MBEDTLS_MD_SHA256;
+	default:
+		/* Invalid hash algorithm. */
+		return MBEDTLS_MD_NONE;
+	}
+}
+
+/*
+ * Calculate a hash
+ *
+ * output points to the computed hash
+ */
+static int calc_hash(enum crypto_md_algo md_algo, void *data_ptr,
+		     unsigned int data_len,
+		     unsigned char output[CRYPTO_MD_MAX_SIZE])
+{
+	const mbedtls_md_info_t *md_info;
+
+	md_info = mbedtls_md_info_from_type(md_type(md_algo));
+	if (md_info == NULL) {
+		return CRYPTO_ERR_HASH;
+	}
+
+	/*
+	 * Calculate the hash of the data, it is safe to pass the
+	 * 'output' hash buffer pointer considering its size is always
+	 * bigger than or equal to MBEDTLS_MD_MAX_SIZE.
+	 */
+	return mbedtls_md(md_info, data_ptr, data_len, output);
+}
+#endif /*
+	* CRYPTO_SUPPORT == CRYPTO_HASH_CALC_ONLY || \
+	* CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+	*/
+
+#if TF_MBEDTLS_USE_AES_GCM
+/*
+ * Stack based buffer allocation for decryption operation. It could
+ * be configured to balance stack usage vs execution speed.
+ */
+#define DEC_OP_BUF_SIZE		128
+
+static int aes_gcm_decrypt(void *data_ptr, size_t len, const void *key,
+			   unsigned int key_len, const void *iv,
+			   unsigned int iv_len, const void *tag,
+			   unsigned int tag_len)
+{
+	mbedtls_gcm_context ctx;
+	mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;
+	unsigned char buf[DEC_OP_BUF_SIZE];
+	unsigned char tag_buf[CRYPTO_MAX_TAG_SIZE];
+	unsigned char *pt = data_ptr;
+	size_t dec_len;
+	int diff, i, rc;
+	size_t output_length __unused;
+
+	mbedtls_gcm_init(&ctx);
+
+	rc = mbedtls_gcm_setkey(&ctx, cipher, key, key_len * 8);
+	if (rc != 0) {
+		rc = CRYPTO_ERR_DECRYPTION;
+		goto exit_gcm;
+	}
+
+#if (MBEDTLS_VERSION_MAJOR < 3)
+	rc = mbedtls_gcm_starts(&ctx, MBEDTLS_GCM_DECRYPT, iv, iv_len, NULL, 0);
+#else
+	rc = mbedtls_gcm_starts(&ctx, MBEDTLS_GCM_DECRYPT, iv, iv_len);
+#endif
+	if (rc != 0) {
+		rc = CRYPTO_ERR_DECRYPTION;
+		goto exit_gcm;
+	}
+
+	while (len > 0) {
+		dec_len = MIN(sizeof(buf), len);
+
+#if (MBEDTLS_VERSION_MAJOR < 3)
+		rc = mbedtls_gcm_update(&ctx, dec_len, pt, buf);
+#else
+		rc = mbedtls_gcm_update(&ctx, pt, dec_len, buf, sizeof(buf), &output_length);
+#endif
+
+		if (rc != 0) {
+			rc = CRYPTO_ERR_DECRYPTION;
+			goto exit_gcm;
+		}
+
+		memcpy(pt, buf, dec_len);
+		pt += dec_len;
+		len -= dec_len;
+	}
+
+#if (MBEDTLS_VERSION_MAJOR < 3)
+	rc = mbedtls_gcm_finish(&ctx, tag_buf, sizeof(tag_buf));
+#else
+	rc = mbedtls_gcm_finish(&ctx, NULL, 0, &output_length, tag_buf, sizeof(tag_buf));
+#endif
+
+	if (rc != 0) {
+		rc = CRYPTO_ERR_DECRYPTION;
+		goto exit_gcm;
+	}
+
+	/* Check tag in "constant-time" */
+	for (diff = 0, i = 0; i < tag_len; i++)
+		diff |= ((const unsigned char *)tag)[i] ^ tag_buf[i];
+
+	if (diff != 0) {
+		rc = CRYPTO_ERR_DECRYPTION;
+		goto exit_gcm;
+	}
+
+	/* GCM decryption success */
+	rc = CRYPTO_SUCCESS;
+
+exit_gcm:
+	mbedtls_gcm_free(&ctx);
+	return rc;
+}
+
+/*
+ * Authenticated decryption of an image
+ */
+static int auth_decrypt(enum crypto_dec_algo dec_algo, void *data_ptr,
+			size_t len, const void *key, unsigned int key_len,
+			unsigned int key_flags, const void *iv,
+			unsigned int iv_len, const void *tag,
+			unsigned int tag_len)
+{
+	int rc;
+
+	assert((key_flags & ENC_KEY_IS_IDENTIFIER) == 0);
+
+	switch (dec_algo) {
+	case CRYPTO_GCM_DECRYPT:
+		rc = aes_gcm_decrypt(data_ptr, len, key, key_len, iv, iv_len,
+				     tag, tag_len);
+		if (rc != 0)
+			return rc;
+		break;
+	default:
+		return CRYPTO_ERR_DECRYPTION;
+	}
+
+	return CRYPTO_SUCCESS;
+}
+#endif /* TF_MBEDTLS_USE_AES_GCM */
+
+/*
+ * Register crypto library descriptor
+ */
+#if CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC
+#if TF_MBEDTLS_USE_AES_GCM
+REGISTER_CRYPTO_LIB(LIB_NAME, init, verify_signature, verify_hash, calc_hash,
+		    auth_decrypt, NULL);
+#else
+REGISTER_CRYPTO_LIB(LIB_NAME, init, verify_signature, verify_hash, calc_hash,
+		    NULL, NULL);
+#endif
+#elif CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_ONLY
+#if TF_MBEDTLS_USE_AES_GCM
+REGISTER_CRYPTO_LIB(LIB_NAME, init, verify_signature, verify_hash, NULL,
+		    auth_decrypt, NULL);
+#else
+REGISTER_CRYPTO_LIB(LIB_NAME, init, verify_signature, verify_hash, NULL,
+		    NULL, NULL);
+#endif
+#elif CRYPTO_SUPPORT == CRYPTO_HASH_CALC_ONLY
+REGISTER_CRYPTO_LIB(LIB_NAME, init, NULL, NULL, calc_hash, NULL, NULL);
+#endif /* CRYPTO_SUPPORT == CRYPTO_AUTH_VERIFY_AND_HASH_CALC */