diff --git a/tests/src/psa_crypto_helpers.c b/tests/src/psa_crypto_helpers.c
index 77c2f89..7861185 100644
--- a/tests/src/psa_crypto_helpers.c
+++ b/tests/src/psa_crypto_helpers.c
@@ -149,4 +149,35 @@
     }
 }
 
+#if defined(MBEDTLS_PSA_INJECT_ENTROPY)
+
+#include <mbedtls/entropy.h>
+#include <psa_crypto_its.h>
+
+int mbedtls_test_inject_entropy_seed_read(unsigned char *buf, size_t len)
+{
+    size_t actual_len = 0;
+    psa_status_t status = psa_its_get(PSA_CRYPTO_ITS_RANDOM_SEED_UID,
+                                      0, len, buf, &actual_len);
+    if (status != 0) {
+        return MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR;
+    }
+    if (actual_len != len) {
+        return MBEDTLS_ERR_ENTROPY_SOURCE_FAILED;
+    }
+    return 0;
+}
+
+int mbedtls_test_inject_entropy_seed_write(unsigned char *buf, size_t len)
+{
+    psa_status_t status = psa_its_set(PSA_CRYPTO_ITS_RANDOM_SEED_UID,
+                                      len, buf, 0);
+    if (status != 0) {
+        return MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR;
+    }
+    return 0;
+}
+
+#endif /* MBEDTLS_PSA_INJECT_ENTROPY */
+
 #endif /* MBEDTLS_PSA_CRYPTO_C */