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PKCS#1v1.5 sign/verify uses hash metadata

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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Gilles Peskine 2022-12-13 20:30:10 +01:00
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commit 143ebcc1d6
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docs/architecture/psa-migration/md-cipher-dispatch.md
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@ -97,7 +97,7 @@ In this work, we want two things:
We can classify code that implements or uses cryptographic mechanisms into several groups: We can classify code that implements or uses cryptographic mechanisms into several groups:
* Software implementations of primitive cryptographic mechanisms. These are not expected to change. * Software implementations of primitive cryptographic mechanisms. These are not expected to change.
* Software implementations of constructed cryptographic mechanisms (e.g. HMAC, CTR_DRBG, RSA (calling a hash for PSS/OAEP), …). These need to keep working whenever a legacy implementation of the auxiliary mechanism is available, even if a PSA implementation is also available. * Software implementations of constructed cryptographic mechanisms (e.g. HMAC, CTR_DRBG, RSA (calling a hash for PSS/OAEP, and needing to know the hash length in PKCS1v1.5 sign/verify), …). These need to keep working whenever a legacy implementation of the auxiliary mechanism is available, regardless of whether a PSA implementation is also available.
* Code implementing the PSA crypto interface. This is not expected to change, except perhaps to expose some internal functionality to overhauled glue code. * Code implementing the PSA crypto interface. This is not expected to change, except perhaps to expose some internal functionality to overhauled glue code.
* Code that's subject to `MBEDTLS_USE_PSA_CRYPTO`: `pk.h`, X.509, TLS (excluding TLS 1.3). * Code that's subject to `MBEDTLS_USE_PSA_CRYPTO`: `pk.h`, X.509, TLS (excluding TLS 1.3).
* Code that always uses PSA for crypto: TLS 1.3, LMS. * Code that always uses PSA for crypto: TLS 1.3, LMS.