test: psa: Improve description of curve 448 tests

Improve the description of some curve 448 tests

Signed-off-by: Archana <archana.madhavan@silabs.com>
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index fcf6eaa..defb3f4 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -209,19 +209,19 @@
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_255
 import_export_public_key:"70076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c6a":PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):PSA_ALG_ECDH:0:PSA_SUCCESS:"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a"
 
-PSA import/export EC curve448 key pair: good (already properly masked)
+PSA import/export EC curve448 key pair: good (already properly masked, key from RFC 7748 6.2 Alice))
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_448
 import_export:"988f4925d1519f5775cf46b04b5800d4ee9ee8bae8bc5565d498c28dd9c9baf574a9419744897391006382a6f127ab1d9ac2d8c0a59872eb":PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:448:0:PSA_SUCCESS:1
 
-PSA import/export EC curve448 key pair: unmasked input (check export-import-export yields properly masked output)
+PSA import/export EC curve448 key pair: unmasked input (check export-import-export yields properly masked output, key from RFC 7748 6.2 Alice))
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_448
 import_export:"9a8f4925d1519f5775cf46b04b5800d4ee9ee8bae8bc5565d498c28dd9c9baf574a9419744897391006382a6f127ab1d9ac2d8c0a598726b":PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:448:0:PSA_SUCCESS:0
 
-PSA import/export-public EC curve448: accept masked input
+PSA import/export-public EC curve448: accept masked input (key from RFC 7748 6.2 Alice)
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_448
 import_export_public_key:"988f4925d1519f5775cf46b04b5800d4ee9ee8bae8bc5565d498c28dd9c9baf574a9419744897391006382a6f127ab1d9ac2d8c0a59872eb":PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):PSA_ALG_ECDH:0:PSA_SUCCESS:"9b08f7cc31b7e3e67d22d5aea121074a273bd2b83de09c63faa73d2c22c5d9bbc836647241d953d40c5b12da88120d53177f80e532c41fa0"
 
-PSA import/export-public EC curve448: accept unmasked input
+PSA import/export-public EC curve448: accept unmasked input (key from RFC 7748 6.2 Alice)
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_448
 import_export_public_key:"9a8f4925d1519f5775cf46b04b5800d4ee9ee8bae8bc5565d498c28dd9c9baf574a9419744897391006382a6f127ab1d9ac2d8c0a598726b":PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_MONTGOMERY):PSA_ALG_ECDH:0:PSA_SUCCESS:"9b08f7cc31b7e3e67d22d5aea121074a273bd2b83de09c63faa73d2c22c5d9bbc836647241d953d40c5b12da88120d53177f80e532c41fa0"
 
@@ -245,7 +245,7 @@
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_255
 import_export:"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a":PSA_KEY_TYPE_ECC_PUBLIC_KEY(PSA_ECC_FAMILY_MONTGOMERY):PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:255:0:PSA_SUCCESS:1
 
-PSA import/export curve448 Public Key: good
+PSA import/export curve448 Public Key: good (key from RFC 7748 6.2 Alice)
 depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:PSA_WANT_ECC_MONTGOMERY_448
 import_export:"9b08f7cc31b7e3e67d22d5aea121074a273bd2b83de09c63faa73d2c22c5d9bbc836647241d953d40c5b12da88120d53177f80e532c41fa0":PSA_KEY_TYPE_ECC_PUBLIC_KEY(PSA_ECC_FAMILY_MONTGOMERY):PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:448:0:PSA_SUCCESS:0