47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
package webfinger
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import (
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"crypto/ed25519"
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"encoding/base64"
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"time"
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"github.com/golang-jwt/jwt/v4"
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"github.com/oklog/ulid/v2"
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)
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var (
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defaultExpire = 30 * time.Minute
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defaultIssuer = "sour.is/webfinger"
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defaultAudience = "sour.is/webfinger"
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)
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func NewSignedRequest(jrd *JRD, key ed25519.PrivateKey) (string, error) {
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type claims struct {
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PubKey string `json:"pub"`
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*JRD
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jwt.RegisteredClaims
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}
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pub := []byte(key.Public().(ed25519.PublicKey))
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j := claims{
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PubKey: enc(pub),
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JRD: jrd.CloneValues(),
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RegisteredClaims: jwt.RegisteredClaims{
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ID: ulid.Make().String(),
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Subject: jrd.Subject,
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Audience: jwt.ClaimStrings{defaultAudience},
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(defaultExpire)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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Issuer: defaultIssuer,
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},
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}
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j.JRD.Subject = "" // move subject into registered claims.
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token := jwt.NewWithClaims(jwt.SigningMethodEdDSA, &j)
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return token.SignedString(key)
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}
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func enc(b []byte) string {
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return base64.RawURLEncoding.EncodeToString(b)
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}
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