diff options
| author | Justin Chadwell <justin.chadwell@arm.com> | 2019-09-09 15:24:31 +0100 |
|---|---|---|
| committer | Justin Chadwell <justin.chadwell@arm.com> | 2019-09-12 15:27:41 +0100 |
| commit | 6a415a508ea6acec321e4609d3f8e5c03ba67664 (patch) | |
| tree | 611f85b28280488052a30368bc28bbd5b2198716 /docs | |
| parent | f29213d9e3c82f8b43e42023d5b39e097d86ff18 (diff) | |
Remove RSA PKCS#1 v1.5 support from cert_tool
Support for PKCS#1 v1.5 was deprecated in SHA 1001202 and fully removed
in SHA fe199e3, however, cert_tool is still able to generate
certificates in that form. This patch fully removes the ability for
cert_tool to generate these certificates.
Additionally, this patch also fixes a bug where the issuing certificate
was a RSA and the issued certificate was EcDSA. In this case, the issued
certificate would be signed using PKCS#1 v1.5 instead of RSAPSS per
PKCS#1 v2.1, preventing TF-A from verifying the image signatures. Now
that PKCS#1 v1.5 support is removed, all certificates that are signed
with RSA now use the more modern padding scheme.
Change-Id: Id87d7d915be594a1876a73080528d968e65c4e9a
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/getting_started/user-guide.rst | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/docs/getting_started/user-guide.rst b/docs/getting_started/user-guide.rst index 89157386..1229e663 100644 --- a/docs/getting_started/user-guide.rst +++ b/docs/getting_started/user-guide.rst @@ -588,10 +588,8 @@ Common build options - ``KEY_ALG``: This build flag enables the user to select the algorithm to be used for generating the PKCS keys and subsequent signing of the certificate. - It accepts 3 values: ``rsa``, ``rsa_1_5`` and ``ecdsa``. The option - ``rsa_1_5`` is the legacy PKCS#1 RSA 1.5 algorithm which is not TBBR - compliant and is retained only for compatibility. The default value of this - flag is ``rsa`` which is the TBBR compliant PKCS#1 RSA 2.1 scheme. + It accepts 2 values: ``rsa`` and ``ecdsa``. The default value of this flag + is ``rsa`` which is the TBBR compliant PKCS#1 RSA 2.1 scheme. - ``KEY_SIZE``: This build flag enables the user to select the key size for the algorithm specified by ``KEY_ALG``. The valid values for ``KEY_SIZE`` |