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Updated readme

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This patch adds explicit implementation requirements for
platforms architecture dependencies

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
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Minos Galanakis 2021-12-09 13:16:54 +00:00
parent e87790baba
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@ -252,6 +252,15 @@ Mbed TLS can be ported to many different architectures, OS's and platforms. Befo
- [What external dependencies does Mbed TLS rely on?](https://tls.mbed.org/kb/development/what-external-dependencies-does-mbedtls-rely-on)
- [How do I configure Mbed TLS](https://tls.mbed.org/kb/compiling-and-building/how-do-i-configure-mbedtls)
Mbed TLS is mostly written in portable C99; however, it has a few platform requirements that go beyond the standard, but are met by most modern architectures:
- bytes must be 8 bits
- all-bits-zero must be a valid representation of the NULL pointer
- signed integers must be represented using two's complement
- integers must not have padding bits in their representation
- `int` and `size_t` must be at least 32 bits wide
- the types `uint8_t`, `uint16_t`, `uint32_t` and their signed equivalents must be available.
PSA cryptography API
--------------------