1 files changed, 61 insertions, 0 deletions

diff --git a/encoding/pem/read.go b/encoding/pem/read.go
new file mode 100644
index 0000000..dbf2f73
--- /dev/null
+++ b/encoding/pem/read.go
@@ -0,0 +1,61 @@
+package pem
+
+import (
+        "crypto/ecdsa"
+        "crypto/x509"
+        "encoding/pem"
+        "fmt"
+        "os"
+)
+
+func LoadECPrivateKey(filename string) (*ecdsa.PrivateKey, error) {
+        pb, err := os.ReadFile(filename)
+        if err != nil {
+                return nil, err
+        }
+
+        block, _ := pem.Decode(pb)
+        if block == nil {
+                return nil, fmt.Errorf("failed to decode pem bytes")
+        }
+
+        key, err := x509.ParseECPrivateKey(block.Bytes)
+        if err != nil {
+                return nil, err
+        }
+
+        return key, nil
+}
+
+func CertificateFromPemData(data []byte) (*x509.Certificate, error) {
+        block, _ := pem.Decode(data)
+        if block == nil {
+                return nil, fmt.Errorf("Unable to decode PEM")
+        }
+
+        crt, err := x509.ParseCertificate(block.Bytes)
+        if err != nil {
+                return nil, err
+        }
+
+        return crt, nil
+}
+
+func CertificateRequestFromPemDataRaw(data []byte) (*x509.CertificateRequest, []byte, error) {
+        block, _ := pem.Decode(data)
+        if block == nil {
+                return nil, nil, fmt.Errorf("Unable to decode PEM")
+        }
+
+        csr, err := x509.ParseCertificateRequest(block.Bytes)
+        if err != nil {
+                return nil, nil, err
+        }
+
+        return csr, block.Bytes, nil
+}
+
+func CertificateRequestFromPemData(data []byte) (*x509.CertificateRequest, error) {
+        csr, _, err := CertificateRequestFromPemDataRaw(data)
+        return csr, err
+}