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Terminology 1.2-4.14.1 - hash_to_curve_g2 refers to G1 #4

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jdspdx opened this issue Apr 8, 2021 · 4 comments
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Terminology 1.2-4.14.1 - hash_to_curve_g2 refers to G1 #4

jdspdx opened this issue Apr 8, 2021 · 4 comments

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@jdspdx
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jdspdx commented Apr 8, 2021

The spec currently says that this function returns a point in G1. I believe this is intended to be G2?

hash_to_curve_g2(ostr) -> P

    The cryptographic hash function that takes as an arbitrary octet string input and returns a point in **G1** as defined in [I-D.irtf-cfrg-hash-to-curve]. The algorithm is BLS12381G2_XMD:BLAKE2B_SSWU_RO, i.e use Blake2b-512 as part of expand message digest, apply the isogeny simplified SWU map to compute a point in G2 using the random oracle method. The domain separation tag value is dst.
@jdspdx
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jdspdx commented Apr 8, 2021

Heya @mikelodder7 - Just came across this when reading some docs.

@mikelodder7
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Yes you are correct. Just a typo

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jdspdx commented Apr 8, 2021

Okay, happy to PR

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jdspdx commented Apr 8, 2021

#5

@jdspdx jdspdx closed this as completed Apr 8, 2021
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