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Merge pull request #2 from morrildl/master 

Support x509 Certificates for JWT verification.
This commit is contained in:
Dave Grijalva 2013-02-26 21:28:41 -08:00
parent 32c540957a 924b188e65
commit 57235a88e6
1 changed files with 7 additions and 2 deletions
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7
rs256.go
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@ -29,12 +29,17 @@ func (m *SigningMethodRS256) Verify(signingString, signature string, key []byte)
var block *pem.Block var block *pem.Block
if block, _ = pem.Decode(key); block != nil { if block, _ = pem.Decode(key); block != nil {
var parsedKey interface{} var parsedKey interface{}
if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err == nil { if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
parsedKey, err = x509.ParseCertificate(block.Bytes)
}
if err == nil {
if rsaKey, ok := parsedKey.(*rsa.PublicKey); ok { if rsaKey, ok := parsedKey.(*rsa.PublicKey); ok {
hasher := sha256.New() hasher := sha256.New()
hasher.Write([]byte(signingString)) hasher.Write([]byte(signingString))
err = rsa.VerifyPKCS1v15(rsaKey, crypto.SHA256, hasher.Sum(nil), sig) err = rsa.VerifyPKCS1v15(rsaKey, crypto.SHA256, hasher.Sum(nil), sig)
} else if cert, ok := parsedKey.(*x509.Certificate); ok {
err = cert.CheckSignature(x509.SHA256WithRSA, []byte(signingString), sig)
} else { } else {
err = errors.New("Key is not a valid RSA public key") err = errors.New("Key is not a valid RSA public key")
} }