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authorWim <wim@42.be>2021-10-17 00:47:22 +0200
committerGitHub <noreply@github.com>2021-10-17 00:47:22 +0200
commit4dd8bae5c91fa4aef09d865d8fef1acd84f90925 (patch)
treeffad9b242daccaf8c86d1c1fbd59032302bd3be9 /vendor/github.com/golang-jwt/jwt/rsa_pss.go
parent7ae45c42e712bd0e66c101f3f714c05aa1dc2104 (diff)
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Update dependencies (#1610)
* Update dependencies * Update module to go 1.17
Diffstat (limited to 'vendor/github.com/golang-jwt/jwt/rsa_pss.go')
-rw-r--r--vendor/github.com/golang-jwt/jwt/rsa_pss.go142
1 files changed, 142 insertions, 0 deletions
diff --git a/vendor/github.com/golang-jwt/jwt/rsa_pss.go b/vendor/github.com/golang-jwt/jwt/rsa_pss.go
new file mode 100644
index 00000000..c0147086
--- /dev/null
+++ b/vendor/github.com/golang-jwt/jwt/rsa_pss.go
@@ -0,0 +1,142 @@
+// +build go1.4
+
+package jwt
+
+import (
+ "crypto"
+ "crypto/rand"
+ "crypto/rsa"
+)
+
+// Implements the RSAPSS family of signing methods signing methods
+type SigningMethodRSAPSS struct {
+ *SigningMethodRSA
+ Options *rsa.PSSOptions
+ // VerifyOptions is optional. If set overrides Options for rsa.VerifyPPS.
+ // Used to accept tokens signed with rsa.PSSSaltLengthAuto, what doesn't follow
+ // https://tools.ietf.org/html/rfc7518#section-3.5 but was used previously.
+ // See https://github.com/dgrijalva/jwt-go/issues/285#issuecomment-437451244 for details.
+ VerifyOptions *rsa.PSSOptions
+}
+
+// Specific instances for RS/PS and company.
+var (
+ SigningMethodPS256 *SigningMethodRSAPSS
+ SigningMethodPS384 *SigningMethodRSAPSS
+ SigningMethodPS512 *SigningMethodRSAPSS
+)
+
+func init() {
+ // PS256
+ SigningMethodPS256 = &SigningMethodRSAPSS{
+ SigningMethodRSA: &SigningMethodRSA{
+ Name: "PS256",
+ Hash: crypto.SHA256,
+ },
+ Options: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthEqualsHash,
+ },
+ VerifyOptions: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthAuto,
+ },
+ }
+ RegisterSigningMethod(SigningMethodPS256.Alg(), func() SigningMethod {
+ return SigningMethodPS256
+ })
+
+ // PS384
+ SigningMethodPS384 = &SigningMethodRSAPSS{
+ SigningMethodRSA: &SigningMethodRSA{
+ Name: "PS384",
+ Hash: crypto.SHA384,
+ },
+ Options: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthEqualsHash,
+ },
+ VerifyOptions: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthAuto,
+ },
+ }
+ RegisterSigningMethod(SigningMethodPS384.Alg(), func() SigningMethod {
+ return SigningMethodPS384
+ })
+
+ // PS512
+ SigningMethodPS512 = &SigningMethodRSAPSS{
+ SigningMethodRSA: &SigningMethodRSA{
+ Name: "PS512",
+ Hash: crypto.SHA512,
+ },
+ Options: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthEqualsHash,
+ },
+ VerifyOptions: &rsa.PSSOptions{
+ SaltLength: rsa.PSSSaltLengthAuto,
+ },
+ }
+ RegisterSigningMethod(SigningMethodPS512.Alg(), func() SigningMethod {
+ return SigningMethodPS512
+ })
+}
+
+// Implements the Verify method from SigningMethod
+// For this verify method, key must be an rsa.PublicKey struct
+func (m *SigningMethodRSAPSS) Verify(signingString, signature string, key interface{}) error {
+ var err error
+
+ // Decode the signature
+ var sig []byte
+ if sig, err = DecodeSegment(signature); err != nil {
+ return err
+ }
+
+ var rsaKey *rsa.PublicKey
+ switch k := key.(type) {
+ case *rsa.PublicKey:
+ rsaKey = k
+ default:
+ return ErrInvalidKey
+ }
+
+ // Create hasher
+ if !m.Hash.Available() {
+ return ErrHashUnavailable
+ }
+ hasher := m.Hash.New()
+ hasher.Write([]byte(signingString))
+
+ opts := m.Options
+ if m.VerifyOptions != nil {
+ opts = m.VerifyOptions
+ }
+
+ return rsa.VerifyPSS(rsaKey, m.Hash, hasher.Sum(nil), sig, opts)
+}
+
+// Implements the Sign method from SigningMethod
+// For this signing method, key must be an rsa.PrivateKey struct
+func (m *SigningMethodRSAPSS) Sign(signingString string, key interface{}) (string, error) {
+ var rsaKey *rsa.PrivateKey
+
+ switch k := key.(type) {
+ case *rsa.PrivateKey:
+ rsaKey = k
+ default:
+ return "", ErrInvalidKeyType
+ }
+
+ // Create the hasher
+ if !m.Hash.Available() {
+ return "", ErrHashUnavailable
+ }
+
+ hasher := m.Hash.New()
+ hasher.Write([]byte(signingString))
+
+ // Sign the string and return the encoded bytes
+ if sigBytes, err := rsa.SignPSS(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil), m.Options); err == nil {
+ return EncodeSegment(sigBytes), nil
+ } else {
+ return "", err
+ }
+}