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29 lines
1 KiB
Markdown
29 lines
1 KiB
Markdown
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# Mbed Crypto change history
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## Unreleased changes
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### Interface changes
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* In the PSA API, forbid zero-length keys. To pass a zero-length input to a key derivation function, use a buffer instead (this is now always possible).
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### New features
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* Key derivation inputs in the PSA API can now either come from a key object or from a buffer regardless of the step type.
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### Bug fixes
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* Fix a buffer overflow in the PSA HMAC code when using a long key with an unsupported algorithm. Fixes #254.
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* Fix `mbedtls_asn1_get_int` to support any number of leading zeros.
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* Fix `mbedtls_asn1_get_bitstring_null` to correctly parse bitstrings of at most 2 bytes.
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### Performance improvements
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* Remove a useless call to mbedtls_ecp_group_free(). Contributed by Alexander Krizhanovsky in #210.
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* Speed up PBKDF2 by caching the digest calculation. Contributed by Jack Lloyd and Fortanix Inc in #277.
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### Other changes
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* Remove the technical possibility to define custom md_info structures, which was exposed only in an internal header.
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## Mbed Crypto 2.0.0
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