Fix mbedtls_pk_get_bitlen() for RSA with non-byte-aligned sizes
Add non-regression tests. Update some test functions to not assume that
byte_length == bit_length / 8.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 3414958..35f02cb 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -10,7 +10,21 @@
PK utils: RSA Minimum key
depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_utils:MBEDTLS_PK_RSA:MBEDTLS_RSA_GEN_KEY_MIN_BITS:MBEDTLS_RSA_GEN_KEY_MIN_BITS:(MBEDTLS_RSA_GEN_KEY_MIN_BITS /8):"RSA"
+pk_utils:MBEDTLS_PK_RSA:MBEDTLS_RSA_GEN_KEY_MIN_BITS:MBEDTLS_RSA_GEN_KEY_MIN_BITS:(MBEDTLS_RSA_GEN_KEY_MIN_BITS + 7) / 8:"RSA"
+
+# mbedtls_rsa_gen_key() only supports even sizes, so we don't test min+1,
+# min+3, etc.
+PK utils: RSA Minimum key + 2 bits
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 2:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 2:(MBEDTLS_RSA_GEN_KEY_MIN_BITS + 2 + 7) / 8:"RSA"
+
+PK utils: RSA Minimum key + 4 bits
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 4:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 4:(MBEDTLS_RSA_GEN_KEY_MIN_BITS + 4 + 7) / 8:"RSA"
+
+PK utils: RSA Minimum key + 6 bits
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_utils:MBEDTLS_PK_RSA:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 6:MBEDTLS_RSA_GEN_KEY_MIN_BITS + 6:(MBEDTLS_RSA_GEN_KEY_MIN_BITS + 6 + 7) / 8:"RSA"
PK utils: ECKEY SECP192R1
depends_on:MBEDTLS_PK_HAVE_ECC_KEYS:MBEDTLS_ECP_HAVE_SECP192R1