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CurveType.yaml
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CurveType.yaml
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# Copyright 2020 Coinbase, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
description: |
CurveType is the type of cryptographic curve associated with a PublicKey.
* secp256k1: SEC compressed - `33 bytes` (https://secg.org/sec1-v2.pdf#subsubsection.2.3.3)
* secp256k1_bip340: x-only - `32 bytes` (implicitly even `Y` coord. Secp256k1 compressed keys may be repurposed by dropping the first byte. (https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki#Public_Key_Generation))
* secp256r1: SEC compressed - `33 bytes` (https://secg.org/sec1-v2.pdf#subsubsection.2.3.3)
* edwards25519: `y (255-bits) || x-sign-bit (1-bit)` - `32 bytes` (https://ed25519.cr.yp.to/ed25519-20110926.pdf)
* tweedle: 1st pk : Fq.t (32 bytes) || 2nd pk : Fq.t (32 bytes) (https://github.com/CodaProtocol/coda/blob/develop/rfcs/0038-rosetta-construction-api.md#marshal-keys)
* pallas: `x (255 bits) || y-parity-bit (1-bit) - 32 bytes` (https://github.com/zcash/pasta)
type: string
enum:
- secp256k1
- secp256k1_bip340
- secp256r1
- edwards25519
- tweedle
- pallas