Prerequisites for testing Blake2 algorithm in TF-PSA-Crypto - #316
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valeriosetti wants to merge 2 commits into
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Prerequisites for testing Blake2 algorithm in TF-PSA-Crypto#316valeriosetti wants to merge 2 commits into
valeriosetti wants to merge 2 commits into
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Signed-off-by: Valerio Setti <vsetti@baylibre.com>
PKCS v1.5 requires an OID for the hash algorithm being used, but so far no OID has been standardized for Blake2. Therefore exercizing this configuration should be avoided. Signed-off-by: Valerio Setti <vsetti@baylibre.com>
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bjwtaylor
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Aug 17, 2026
| # RSA PKCS#1v1.5 signatures embed an ASN.1 OID identifying the hash | ||
| # algorithm, but there is no such OID being officially standardized for | ||
| # for BLAKE2. This is also reported on the PSA Crypto API specification: | ||
| # https://arm-software.github.io/psa-api/crypto/1.5/api/ops/hash.html#c.PSA_ALG_BLAKE2S_HASH256 |
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I believe this is now incorrect as these are specified here https://www.rfc-editor.org/rfc/rfc7693.html#section-4 Let me know what you think though?
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This is correct with respect to the PSA specification.
I'll go and check if that OID is actually used in RSA PKCS#1v1.5 signatures. (It's sometimes a bit of a mess.) If so we'll update the PSA specification.
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Description
Add support for Blake2 hash algorithms.
Prerequisite for Mbed-TLS/TF-PSA-Crypto#867.
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