[PATCH v6 00/11] ima-evm-utils: Convert v2 signatures from RSA to EVP_PKEY API

[Vitaly Chikunov <vt@altlinux.org>]

Convert sign v2 from RSA API (with manual formatting PKCS1) to more generic
EVP_PKEY API, allowing to generate more types of OpenSSL supported signatures.
This is done to enable EC-RDSA signatures, which are already supported in the
Kernel. With some small fixes.

All patches tested on x86_64 to not break anything.

Changes since v5:
- Squash calc keyid v2 with cmd_import patch.
- Add log_err messages to verify_hash_v2 and sign_hash_v2.
- Fix sign and hash generation error processing to show errors instead
  of assert failures.

Changes since v4:
- Split conversion into more patches, as suggested by Mimi Zohar.
- Small fixes suggested by Mimi Zohar.

Changes since v3:
- As suggested by Mimi Zohar this is v3 splitted into several patches to
  simplify review. No code changes.

Changes since v2:
- Just rebase over newer commits.

Changes since v1:
- More key neutral code in calc_keyid_v1().
- Fix uninitialized sigsize for EVP_PKEY_sign().
- Fix memory leaks for openssl types.

Vitaly Chikunov (11):
  ima-evm-utils: Make sure sig buffer is always MAX_SIGNATURE_SIZE
  ima-evm-utils: Convert read_pub_key to EVP_PKEY API
  ima-evm-utils: Convert read_priv_key to EVP_PKEY API
  ima-evm-utils: Convert cmd_import and calc keyid v2 to EVP_PKEY API
  ima-evm-utils: Start converting find_keyid to EVP_PKEY API
  ima-evm-utils: Convert verify_hash_v2 to EVP_PKEY API
  ima-evm-utils: Replace find_keyid with find_keyid_pkey
  ima-evm-utils: Convert sign_hash_v2 to EVP_PKEY API
  ima-evm-utils: Replace calc_keyid_v2 with calc_pkeyid_v2
  ima-evm-utils: Remove RSA_ASN1_templates
  ima-evm-utils: Pass status codes from sign and hash functions to the
    callers

 src/evmctl.c    |  43 +++++----
 src/imaevm.h    |   4 +-
 src/libimaevm.c | 277 +++++++++++++++++++++++++++-----------------------------
 3 files changed, 158 insertions(+), 166 deletions(-)

-- 
2.11.0