Comments (4)
mcarrickscott
commented on July 21, 2024
For an example see the bls.rs file. The function bls_hash_to_point() implements the random oracle as specified in the hash_to_curve(msg) function in section 3 of the draft. The function bls_hash_to_point() calls ECP::map2point() which implements the constant time encoding of a field element to the curve - (not the ECP::mapit() function).
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Aphoh
commented on July 21, 2024
Ah I see. Other than the domain separation tag, is there anything bls-specific about that bls_hash_to_point method? I understand that bls IBE is the main use case for it, but it should still be safe to use the same method for any supported curve, no?
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mcarrickscott
commented on July 21, 2024
No, other than domain tag nothing BLS specific.
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Aphoh
commented on July 21, 2024
Excellent, thanks.
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