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48 lines
931 B
48 lines
931 B
package crypto |
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import ( |
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"crypto/rsa" |
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"crypto/x509" |
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"encoding/pem" |
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"github.com/go-faster/errors" |
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) |
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// ParseRSAPublicKeys parses data as list of PEM-encdoed public keys. |
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func ParseRSAPublicKeys(data []byte) ([]*rsa.PublicKey, error) { |
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var keys []*rsa.PublicKey |
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for { |
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block, rest := pem.Decode(data) |
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if block == nil { |
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break |
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} |
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key, err := ParseRSA(block.Bytes) |
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if err != nil { |
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return nil, errors.Wrap(err, "parse RSA from PEM") |
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} |
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keys = append(keys, key) |
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data = rest |
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} |
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return keys, nil |
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} |
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// ParseRSA parses data RSA key in PKCS1 or PKIX forms. |
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func ParseRSA(data []byte) (*rsa.PublicKey, error) { |
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key, err := x509.ParsePKCS1PublicKey(data) |
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if err == nil { |
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return key, nil |
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} |
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k, err := x509.ParsePKIXPublicKey(data) |
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if err != nil { |
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return nil, err |
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} |
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publicKey, ok := k.(*rsa.PublicKey) |
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if !ok { |
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return nil, errors.Errorf("parsed unexpected key type %T", k) |
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} |
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return publicKey, nil |
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}
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