diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index b02f788..4718195 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -291,6 +291,7 @@
    RMM_CBMC_VIEWER_OUTPUT	,ON | OFF		,OFF			,"Generate report of CBMC results using the tool cbmc-viewer"
    RMM_CBMC_SINGLE_TESTBENCH	,			,OFF			,"Run CBMC on a single testbench instead on all of them"
    RMM_CCA_DA			,ON | OFF		,OFF			,"Enable Device Assignment support in RMM (experimental)"
+   ATTEST_PLAT_TOKEN_SIZE	,       		,0x1000			,"Maximum size in bytes expected for the Attestation platform token"
 
 .. _llvm_build:
 
diff --git a/lib/attestation/CMakeLists.txt b/lib/attestation/CMakeLists.txt
index 7f96dd0..887c128 100644
--- a/lib/attestation/CMakeLists.txt
+++ b/lib/attestation/CMakeLists.txt
@@ -12,9 +12,24 @@
     DEFAULT 1000
     ADVANCED)
 
+arm_config_option(
+    NAME ATTEST_PLAT_TOKEN_SIZE
+    HELP "Maximum size in bytes expected for the Attestation platform token"
+    TYPE STRING
+    DEFAULT 0x1000
+    ADVANCED)
+
 target_compile_definitions(rmm-lib-attestation
     PRIVATE "MBEDTLS_ECP_MAX_OPS=${MBEDTLS_ECP_MAX_OPS}U")
 
+target_compile_definitions(rmm-lib-attestation
+    PRIVATE "ATTEST_PLAT_TOKEN_SIZE=U(${ATTEST_PLAT_TOKEN_SIZE})")
+
+MATH(EXPR CCA_TOKEN_BUFFER_BYTES "${RMM_CCA_TOKEN_BUFFER} * 0x1000")
+if (${CCA_TOKEN_BUFFER_BYTES} LESS ${ATTEST_PLAT_TOKEN_SIZE})
+    message(FATAL_ERROR "RMM_CCA_TOKEN_BUFFER size is less than ATTEST_PLAT_TOKEN_SIZE")
+endif()
+
 target_link_libraries(rmm-lib-attestation
   PRIVATE
     rmm-lib-arch
diff --git a/lib/attestation/src/attestation_key.c b/lib/attestation/src/attestation_key.c
index ca0ffbb..93d4c71 100644
--- a/lib/attestation/src/attestation_key.c
+++ b/lib/attestation/src/attestation_key.c
@@ -22,7 +22,7 @@
 /*
  * The platform token which will be needed during attestation.
  */
-static unsigned char rmm_platform_token_buf[SZ_4K];
+static unsigned char rmm_platform_token_buf[ATTEST_PLAT_TOKEN_SIZE];
 static struct q_useful_buf rmm_platform_token;
 
 /*
@@ -226,6 +226,7 @@
 	 * Make sure the token length does not exceed the size of the
 	 * token buffer
 	 */
+	/* coverity[misra_c_2012_rule_9_1_violation:SUPPRESS] */
 	assert(platform_token_len <= sizeof(rmm_platform_token_buf));
 
 	/* coverity[misra_c_2012_rule_9_1_violation:SUPPRESS] */