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64 lines
1.3 KiB
64 lines
1.3 KiB
package jwt
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import (
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"crypto"
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"crypto/ed25519"
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"crypto/x509"
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"encoding/pem"
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"errors"
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)
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var (
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ErrNotEdPrivateKey = errors.New("Key is not a valid Ed25519 private key")
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ErrNotEdPublicKey = errors.New("Key is not a valid Ed25519 public key")
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)
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// Parse PEM-encoded Edwards curve private key
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func ParseEdPrivateKeyFromPEM(key []byte) (crypto.PrivateKey, error) {
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var err error
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// Parse PEM block
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var block *pem.Block
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if block, _ = pem.Decode(key); block == nil {
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return nil, ErrKeyMustBePEMEncoded
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}
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// Parse the key
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var parsedKey interface{}
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if parsedKey, err = x509.ParsePKCS8PrivateKey(block.Bytes); err != nil {
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return nil, err
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}
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var pkey ed25519.PrivateKey
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var ok bool
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if pkey, ok = parsedKey.(ed25519.PrivateKey); !ok {
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return nil, ErrNotEdPrivateKey
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}
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return pkey, nil
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}
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// Parse PEM-encoded Edwards curve public key
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func ParseEdPublicKeyFromPEM(key []byte) (crypto.PublicKey, error) {
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var err error
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// Parse PEM block
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var block *pem.Block
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if block, _ = pem.Decode(key); block == nil {
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return nil, ErrKeyMustBePEMEncoded
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}
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// Parse the key
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var parsedKey interface{}
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if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
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return nil, err
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}
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var pkey ed25519.PublicKey
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var ok bool
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if pkey, ok = parsedKey.(ed25519.PublicKey); !ok {
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return nil, ErrNotEdPublicKey
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}
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return pkey, nil
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}
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