49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
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package crypto
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import (
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"crypto/ecdsa"
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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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// ECDSA parsing errors.
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var (
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ErrNotECPublicKey = errors.New("Key is not a valid ECDSA public key")
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ErrNotECPrivateKey = errors.New("Key is not a valid ECDSA private key")
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)
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// ParseECPrivateKeyFromPEM will parse a PEM encoded EC Private
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// Key Structure.
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func ParseECPrivateKeyFromPEM(key []byte) (*ecdsa.PrivateKey, error) {
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block, _ := pem.Decode(key)
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if block == nil {
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return nil, ErrKeyMustBePEMEncoded
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}
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return x509.ParseECPrivateKey(block.Bytes)
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}
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// ParseECPublicKeyFromPEM will parse a PEM encoded PKCS1 or PKCS8 public key
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func ParseECPublicKeyFromPEM(key []byte) (*ecdsa.PublicKey, error) {
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block, _ := pem.Decode(key)
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if block == nil {
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return nil, ErrKeyMustBePEMEncoded
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}
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parsedKey, err := x509.ParsePKIXPublicKey(block.Bytes)
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if err != nil {
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cert, err := x509.ParseCertificate(block.Bytes)
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if err != nil {
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return nil, err
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}
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parsedKey = cert.PublicKey
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}
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pkey, ok := parsedKey.(*ecdsa.PublicKey)
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if !ok {
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return nil, ErrNotECPublicKey
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}
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return pkey, nil
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}
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