diff --git a/library/bignum.c b/library/bignum.c
index eecdf1e..c45fd5b 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -1692,10 +1692,12 @@
     /*
      * Convert to and from Montgomery around mbedtls_mpi_core_exp_mod().
      */
-    mbedtls_mpi_uint mm = mbedtls_mpi_core_montmul_init(N->p);
-    mbedtls_mpi_core_to_mont_rep(X->p, X->p, N->p, N->n, mm, RR.p, T);
-    mbedtls_mpi_core_exp_mod(X->p, X->p, N->p, N->n, E->p, E->n, RR.p, T);
-    mbedtls_mpi_core_from_mont_rep(X->p, X->p, N->p, N->n, mm, T);
+    {
+        mbedtls_mpi_uint mm = mbedtls_mpi_core_montmul_init(N->p);
+        mbedtls_mpi_core_to_mont_rep(X->p, X->p, N->p, N->n, mm, RR.p, T);
+        mbedtls_mpi_core_exp_mod(X->p, X->p, N->p, N->n, E->p, E->n, RR.p, T);
+        mbedtls_mpi_core_from_mont_rep(X->p, X->p, N->p, N->n, mm, T);
+    }
 
     /*
      * Correct for negative A.
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index fcb465e..9191f65 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1110,6 +1110,8 @@
     echo "MBEDTLS_ECP_RESTARTABLE" >> $expected
     # No PSA equivalent - needed by some init tests
     echo "MBEDTLS_ENTROPY_NV_SEED" >> $expected
+    # No PSA equivalent - required to run threaded tests.
+    echo "MBEDTLS_THREADING_PTHREAD" >> $expected
 
     # Compare reality with expectation.
     # We want an exact match, to ensure the above list remains up-to-date.
@@ -2198,6 +2200,8 @@
     scripts/config.py full
     scripts/config.py set MBEDTLS_THREADING_C
     scripts/config.py set MBEDTLS_THREADING_PTHREAD
+    # Self-tests do not currently use multiple threads.
+    scripts/config.py unset MBEDTLS_SELF_TEST
 
     CC=clang cmake -D CMAKE_BUILD_TYPE:String=TSan .
     make
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index c55af03..b633c6f 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -7532,6 +7532,150 @@
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_SECP_R1_256:PSA_WANT_ALG_ECDH
 generate_key_ext:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:0:"2a":PSA_ERROR_INVALID_ARGUMENT
 
+PSA concurrent key generation: bad type (RSA public key)
+depends_on:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_PUBLIC_KEY:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS:PSA_KEY_USAGE_EXPORT:0:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: raw data, 0 bits: invalid argument
+depends_on:MBEDTLS_THREADING_PTHREAD
+# The spec allows either INVALID_ARGUMENT or NOT_SUPPORTED
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:0:PSA_KEY_USAGE_EXPORT:0:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: raw data, 7 bits: invalid argument
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:7:PSA_KEY_USAGE_EXPORT:0:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: raw data, 8 bits
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_EXPORT:0:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation- raw data, 9 bits: invalid argument
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:9:PSA_KEY_USAGE_EXPORT:0:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: raw data, (MBEDTLS_CTR_DRBG_MAX_REQUEST + 1) * 8 bits
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:(MBEDTLS_CTR_DRBG_MAX_REQUEST + 1) * 8:PSA_KEY_USAGE_EXPORT:0:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: raw data, (2 * MBEDTLS_CTR_DRBG_MAX_REQUEST + 1) * 8 bits
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:(2 * MBEDTLS_CTR_DRBG_MAX_REQUEST + 1) * 8:PSA_KEY_USAGE_EXPORT:0:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: raw data, 65528 bits (large key, ok if it fits)
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:65528:PSA_KEY_USAGE_EXPORT:0:PSA_SUCCESS:1:8:5
+
+PSA concurrent key generation: raw data, 65536 bits (not supported)
+depends_on:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RAW_DATA:65536:PSA_KEY_USAGE_EXPORT:0:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
+PSA concurrent key generation: AES, 128 bits, CTR
+depends_on:PSA_WANT_ALG_CTR:PSA_WANT_KEY_TYPE_AES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_AES:128:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: AES, 128 bits, GCM
+depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_AES:128:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_GCM:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: DES, 64 bits, CBC-nopad
+depends_on:PSA_WANT_ALG_CBC_NO_PADDING:PSA_WANT_KEY_TYPE_DES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DES:64:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CBC_NO_PADDING:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: DES, 128 bits, CBC-nopad
+depends_on:PSA_WANT_ALG_CBC_NO_PADDING:PSA_WANT_KEY_TYPE_DES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DES:128:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CBC_NO_PADDING:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: DES, 192 bits, CBC-nopad
+depends_on:PSA_WANT_ALG_CBC_NO_PADDING:PSA_WANT_KEY_TYPE_DES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DES:192:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CBC_NO_PADDING:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: invalid key size: AES, 64 bits
+depends_on:PSA_WANT_ALG_CTR:PSA_WANT_KEY_TYPE_AES:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_AES:64:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: RSA, minimum allowed key size, good, sign (PKCS#1 v1.5)
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS > 128:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, 1032 bits, good, sign (PKCS#1 v1.5)
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS <= 1032:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:1032:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, 1024 bits, good, sign (PSS SHA-256)
+depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS <= 1024:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:1024:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_RSA_PSS(PSA_ALG_SHA_256):PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, 1024 bits, good, sign (PSS-any-salt SHA-256)
+depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS <= 1024:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:1024:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_RSA_PSS_ANY_SALT(PSA_ALG_SHA_256):PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, minimum allowed key size, good, encrypt (PKCS#1 v1.5)
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_CRYPT:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS >= 256:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS <= 2048:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, 1024 bits, good, encrypt (OAEP SHA-256)
+depends_on:PSA_WANT_ALG_RSA_OAEP:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS <= 1024:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:1024:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_OAEP(PSA_ALG_SHA_256):PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: RSA, 0 bits: invalid
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_CRYPT:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:MBEDTLS_THREADING_PTHREAD
+# The spec allows either INVALID_ARGUMENT or NOT_SUPPORTED
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:0:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_ERROR_INVALID_ARGUMENT:0:8:5
+
+PSA concurrent key generation: RSA, size not multiple of 8: not supported
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_CRYPT:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS + 62:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
+PSA concurrent key generation: RSA, size not multiple of 2: not supported
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_CRYPT:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS + 63:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
+PSA concurrent key generation: RSA, maximum size exceeded
+depends_on:PSA_WANT_ALG_RSA_PKCS1V15_CRYPT:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_RSA_KEY_PAIR:PSA_VENDOR_RSA_MAX_KEY_BITS+8:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
+PSA concurrent key generation: ECC, SECP256R1, good
+depends_on:PSA_WANT_ALG_ECDSA:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_SECP_R1_256:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_ECDSA_ANY:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: ECC, SECP256R1, incorrect bit size
+depends_on:PSA_WANT_ALG_ECDSA:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_BASIC:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_IMPORT:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_EXPORT:PSA_WANT_ECC_SECP_R1_256:MBEDTLS_THREADING_PTHREAD
+# INVALID_ARGUMENT would make more sense, but our code as currently structured
+# doesn't fully relate the curve with its size.
+concurrently_generate_keys:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):128:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_ECDSA_ANY:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
+PSA concurrent key generation: ECC, Curve25519, good
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_MONTGOMERY_255:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):255:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: ECC, Curve448, good
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_MONTGOMERY_448:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):448:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 2048 bits, good
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:PSA_WANT_DH_RFC7919_2048:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):2048:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 3072 bits, good
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:PSA_WANT_DH_RFC7919_3072:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):3072:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 4096 bits, good
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:PSA_WANT_DH_RFC7919_4096:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):4096:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 6144 bits, good
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:PSA_WANT_DH_RFC7919_6144:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):6144:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 8192 bits, good
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:PSA_WANT_DH_RFC7919_8192:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):8192:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_SUCCESS:0:8:5
+
+PSA concurrent key generation: FFDH, 1024 bits, invalid bits
+depends_on:PSA_WANT_ALG_FFDH:PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE:MBEDTLS_THREADING_PTHREAD
+concurrently_generate_keys:PSA_KEY_TYPE_DH_KEY_PAIR(PSA_DH_FAMILY_RFC7919):1024:PSA_KEY_USAGE_EXPORT:PSA_ALG_FFDH:PSA_ERROR_NOT_SUPPORTED:0:8:5
+
 Key production parameters initializers
 key_production_parameters_init:
 
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 09874a1..1141597 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -28,6 +28,10 @@
 #define TEST_DRIVER_LOCATION 0x7fffff
 #endif
 
+#if defined(MBEDTLS_THREADING_PTHREAD)
+#include "mbedtls/threading.h"
+#endif
+
 /* If this comes up, it's a bug in the test code or in the test data. */
 #define UNUSED 0xdeadbeef
 
@@ -1333,6 +1337,66 @@
     return 0;
 }
 
+#if defined(MBEDTLS_THREADING_PTHREAD)
+typedef struct generate_key_context {
+    psa_key_type_t type;
+    psa_key_usage_t usage;
+    size_t bits;
+    psa_algorithm_t alg;
+    psa_status_t expected_status;
+    psa_key_attributes_t *attributes;
+    int is_large_key;
+    int reps;
+}
+generate_key_context;
+void *thread_generate_key(void *ctx)
+{
+    mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
+    psa_key_attributes_t got_attributes = PSA_KEY_ATTRIBUTES_INIT;
+    generate_key_context *gkc = (struct generate_key_context *) ctx;
+
+    /* If there are race conditions, it is likely the case that they do not
+     * arise every time the code runs. We repeat the code to increase the
+     * chance that any race conditions will be hit. */
+    for (int n = 0; n < gkc->reps; n++) {
+        /* Generate a key */
+        psa_status_t status = psa_generate_key(gkc->attributes, &key);
+
+        if (gkc->is_large_key > 0) {
+            TEST_ASSUME(status != PSA_ERROR_INSUFFICIENT_MEMORY);
+        }
+
+        TEST_EQUAL(status, gkc->expected_status);
+        if (gkc->expected_status != PSA_SUCCESS) {
+            PSA_ASSERT(psa_destroy_key(key));
+            goto exit;
+        }
+
+        /* Test the key information */
+        PSA_ASSERT(psa_get_key_attributes(key, &got_attributes));
+        TEST_EQUAL(psa_get_key_type(&got_attributes), gkc->type);
+        TEST_EQUAL(psa_get_key_bits(&got_attributes), gkc->bits);
+
+        /* Do something with the key according
+         * to its type and permitted usage. */
+        if (!mbedtls_test_psa_exercise_key(key, gkc->usage, gkc->alg)) {
+            psa_destroy_key(key);
+            goto exit;
+        }
+        psa_reset_key_attributes(&got_attributes);
+
+        PSA_ASSERT(psa_destroy_key(key));
+    }
+exit:
+    /*
+     * Key attributes may have been returned by psa_get_key_attributes()
+     * thus reset them as required.
+     */
+    psa_reset_key_attributes(&got_attributes);
+    return NULL;
+}
+#endif /* MBEDTLS_THREADING_PTHREAD */
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -9783,6 +9847,59 @@
 }
 /* END_CASE */
 
+#if defined MBEDTLS_THREADING_PTHREAD
+
+/* BEGIN_CASE depends_on:MBEDTLS_THREADING_PTHREAD */
+void concurrently_generate_keys(int type_arg,
+                                int bits_arg,
+                                int usage_arg,
+                                int alg_arg,
+                                int expected_status_arg,
+                                int is_large_key_arg,
+                                int arg_thread_count,
+                                int reps_arg)
+{
+    size_t thread_count = (size_t) arg_thread_count;
+    mbedtls_test_thread_t *threads = NULL;
+    generate_key_context gkc;
+    gkc.type = type_arg;
+    gkc.usage = usage_arg;
+    gkc.bits = bits_arg;
+    gkc.alg = alg_arg;
+    gkc.expected_status = expected_status_arg;
+    gkc.is_large_key = is_large_key_arg;
+    gkc.reps = reps_arg;
+    psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
+
+    PSA_ASSERT(psa_crypto_init());
+
+    psa_set_key_usage_flags(&attributes, usage_arg);
+    psa_set_key_algorithm(&attributes, alg_arg);
+    psa_set_key_type(&attributes, type_arg);
+    psa_set_key_bits(&attributes, bits_arg);
+    gkc.attributes = &attributes;
+
+    TEST_CALLOC(threads, sizeof(mbedtls_test_thread_t) * thread_count);
+
+    /* Split threads to generate key then destroy key. */
+    for (size_t i = 0; i < thread_count; i++) {
+        TEST_EQUAL(
+            mbedtls_test_thread_create(&threads[i], thread_generate_key,
+                                       (void *) &gkc), 0);
+    }
+
+    /* Join threads. */
+    for (size_t i = 0; i < thread_count; i++) {
+        TEST_EQUAL(mbedtls_test_thread_join(&threads[i]), 0);
+    }
+
+exit:
+    mbedtls_free(threads);
+    PSA_DONE();
+}
+/* END_CASE */
+#endif
+
 /* BEGIN_CASE */
 void generate_key(int type_arg,
                   int bits_arg,