36 lines
941 B
Go
36 lines
941 B
Go
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// Package secp256r1 implements Cosmos-SDK compatible ECDSA public and private key. The keys
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// can be protobuf serialized and packed in Any.
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package secp256r1
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import (
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"crypto/elliptic"
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"fmt"
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codectypes "github.com/cosmos/cosmos-sdk/codec/types"
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cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
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)
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const (
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// fieldSize is the curve domain size.
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fieldSize = 32
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pubKeySize = fieldSize + 1
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name = "secp256r1"
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)
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var secp256r1 elliptic.Curve
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func init() {
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secp256r1 = elliptic.P256()
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// pubKeySize is ceil of field bit size + 1 for the sign
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expected := (secp256r1.Params().BitSize + 7) / 8
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if expected != fieldSize {
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panic(fmt.Sprintf("Wrong secp256r1 curve fieldSize=%d, expecting=%d", fieldSize, expected))
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}
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}
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// RegisterInterfaces adds secp256r1 PubKey to pubkey registry
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func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
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registry.RegisterImplementations((*cryptotypes.PubKey)(nil), &PubKey{})
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}
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