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34 lines
1.7 KiB
Text
34 lines
1.7 KiB
Text
libuecc v7 (unreleased)
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* Change conversion between Ed25519 and legacy representation. This should
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not affect any operations unless Ed25519 and legacy load/store
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functions are mixed when accessing a work structure. Doing so is now
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officially supported, for example to convert a legacy public key to
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Ed25519 format.
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* The changed representation allows to use the same
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ecc_25519_work_default_base for both Ed25519 and legacy.
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ecc_25519_work_default_base and ecc_25519_scalarmult_base have been
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undeprecated, ecc_25519_work_base_ed25519 and
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ecc_25519_work_base_legacy are deprecated now.
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* All points are now internally represented with Ed25519 coordinates, which
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allows about 6% faster scalar multplication than the legacy
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representation.
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* ecc_25519_scalarmult_base has been further optimized, making it another
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6% faster than normal ecc_25519_scalarmult.
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libuecc v6 (2015/10/25)
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* Fixes a bug which might have caused a point's y coordinate to be negated
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in certain circumstances when the point was stored in packed
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representation and loaded again. It is extremely improbable that this
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has ever actually happened, as only a small range of coordinates was
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affected.
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* Use stdint types to clarify ABI and add support for systems with
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sizeof(int) < 4 (this is not an ABI break in practise as all systems on
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which libuecc has been used in the past should have int == int32_t)
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* Add point negation and subtraction functions
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* Rename all point access functions to bear a _legacy suffix (the old names
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are still available, but marked as deprecated)
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* Add new point access functions and a new generator point that are
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compatible with Ed25519
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