57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
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package token
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import (
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"github.com/pkg/errors"
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"gopkg.in/square/go-jose.v2"
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"gopkg.in/square/go-jose.v2/jwt"
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)
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const (
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jwtIssuer = "hydra-passwordless"
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)
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type privateClaims struct {
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Challenge string `json:"challenge"`
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}
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func Generate(signingKey, encryptionKey, email, challenge string) (string, error) {
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sig, err := jose.NewSigner(
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jose.SigningKey{
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Algorithm: jose.HS256,
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Key: []byte(signingKey),
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},
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(&jose.SignerOptions{}).WithType("JWT"),
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)
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if err != nil {
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return "", errors.Wrap(err, "could not create jwt signer")
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}
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enc, err := jose.NewEncrypter(
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jose.A256GCM,
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jose.Recipient{
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Algorithm: jose.DIRECT,
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Key: []byte(encryptionKey),
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},
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(&jose.EncrypterOptions{}).WithType("JWT").WithContentType("JWT"))
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if err != nil {
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return "", errors.Wrap(err, "could not create jwt encrypter")
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}
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claims := jwt.Claims{
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Subject: email,
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Issuer: jwtIssuer,
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Audience: jwt.Audience{jwtIssuer},
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}
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privateClaims := privateClaims{
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Challenge: challenge,
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}
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raw, err := jwt.SignedAndEncrypted(sig, enc).Claims(claims).Claims(privateClaims).CompactSerialize()
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if err != nil {
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return "", errors.Wrap(err, "could not sign and encrypt jwt")
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}
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return raw, nil
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}
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