mbed-os

Author SHA1 Message Date

Author	SHA1	Message	Date
Chun-Chieh Li	1dd95465f6	M467: Fix mbedtls_ecp_point_cmp() call with null argument Guard from null argument passed to mbedtls_ecp_point_cmp() in ECC H/W port	2022-09-01 10:02:19 +08:00
Chun-Chieh Li	087daeacee	M467: Support Crypto ECC H/W in full-module replacement 1. Replace ecp.c full-module, and other ec modules dependent on ecp.c (ecdh.c/ecdsa.c/ecjpake.c) will improve followingly. 2. Recover from Crypto ECC H/W failure: (1) Enable timed-out wait to escape from ECC H/W trap (2) On ECC H/W timeout, stop this ECC H/W operation (3) Fall back to S/W implementation on failure 3. Support Short Weierstrass curve 4. Support Montgomery curve Montgomery curve has the form: B y^2 = x^3 + A x^2 + x (1) In S/W impl, A is used as (A + 2) / 4. Figure out its original value for engine. `2eb06e7620/connectivity/mbedtls/include/mbedtls/ecp.h (L219-L220)` (2) In S/W impl, B is unused. Actually, B is 1 for Curve25519/Curve448 and needs to configure to engine. `2eb06e7620/connectivity/mbedtls/include/mbedtls/ecp.h (L221-L222)` (3) In S/W impl, y-coord is absent, but engine needs it. Deduce it from x-coord following: https://tools.ietf.org/id/draft-jivsov-ecc-compact-05.html https://www.rieselprime.de/ziki/Modular_square_root NOTE: Fix Curve448 has wrong order value https://github.com/Mbed-TLS/mbedtls/pull/5811	2022-09-01 10:02:18 +08:00
Chun-Chieh Li	24b0feb17f	M467: Support Crypto SHA/ECC H/W 1. Prepare crypto common code 2. Support list - SHA - ECC NOTE: AES/RSA are to support in other works NOTE: Compared to M487, M467's SHA supports context save & restore (DMA Cascade mode) and so no software fallback is needed. NOTE: M467's ECC, following M487, goes partial-module replacement and it can just improve primitives e.g. point addition/doubling by 2X, and cannot improve high level point multiplication because MbedTLS doesn’t open it. To improve performance best, full-module replacement is needed. NOTE: Continuing above, add support for Montgomery curve	2022-09-01 10:02:16 +08:00

Chun-Chieh Li

M467: Fix mbedtls_ecp_point_cmp() call with null argument

Guard from null argument passed to mbedtls_ecp_point_cmp() in ECC H/W port

2022-09-01 10:02:19 +08:00

Chun-Chieh Li

087daeacee

M467: Support Crypto ECC H/W in full-module replacement

1.  Replace ecp.c full-module, and other ec modules dependent on ecp.c (ecdh.c/ecdsa.c/ecjpake.c) will improve followingly.
2.  Recover from Crypto ECC H/W failure:
    (1) Enable timed-out wait to escape from ECC H/W trap
    (2) On ECC H/W timeout, stop this ECC H/W operation
    (3) Fall back to S/W implementation on failure
3.  Support Short Weierstrass curve
4.  Support Montgomery curve
    Montgomery curve has the form: B y^2 = x^3 + A x^2 + x
    (1) In S/W impl, A is used as (A + 2) / 4. Figure out its original value for engine.
        2eb06e7620/connectivity/mbedtls/include/mbedtls/ecp.h (L219-L220)
    (2) In S/W impl, B is unused. Actually, B is 1 for Curve25519/Curve448 and needs to configure to engine.
        2eb06e7620/connectivity/mbedtls/include/mbedtls/ecp.h (L221-L222)
    (3) In S/W impl, y-coord is absent, but engine needs it. Deduce it from x-coord following:
        https://tools.ietf.org/id/draft-jivsov-ecc-compact-05.html
        https://www.rieselprime.de/ziki/Modular_square_root
    NOTE: Fix Curve448 has wrong order value
          https://github.com/Mbed-TLS/mbedtls/pull/5811

2022-09-01 10:02:18 +08:00

Chun-Chieh Li

24b0feb17f

M467: Support Crypto SHA/ECC H/W

1.  Prepare crypto common code
2.  Support list
    -   SHA
    -   ECC
    NOTE: AES/RSA are to support in other works
    NOTE: Compared to M487, M467's SHA supports context save & restore (DMA Cascade mode) and so no software fallback is needed.
    NOTE: M467's ECC, following M487, goes partial-module replacement and it can just improve primitives e.g. point addition/doubling by 2X,
          and cannot improve high level point multiplication because MbedTLS doesn’t open it.
          To improve performance best, full-module replacement is needed.
    NOTE: Continuing above, add support for Montgomery curve

2022-09-01 10:02:16 +08:00

3 Commits (master)