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89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
package x509util
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import (
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"crypto/x509"
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"strings"
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"github.com/pkg/errors"
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)
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// List of signature algorithms, all of them have values in upper case to match
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// them with the string representation.
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// nolint:golint
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const (
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MD2_RSA = "MD2-RSA"
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MD5_RSA = "MD5-RSA"
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SHA1_RSA = "SHA1-RSA"
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SHA256_RSA = "SHA256-RSA"
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SHA384_RSA = "SHA384-RSA"
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SHA512_RSA = "SHA512-RSA"
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SHA256_RSAPSS = "SHA256-RSAPSS"
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SHA384_RSAPSS = "SHA384-RSAPSS"
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SHA512_RSAPSS = "SHA512-RSAPSS"
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DSA_SHA1 = "DSA-SHA1"
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DSA_SHA256 = "DSA-SHA256"
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ECDSA_SHA1 = "ECDSA-SHA1"
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ECDSA_SHA256 = "ECDSA-SHA256"
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ECDSA_SHA384 = "ECDSA-SHA384"
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ECDSA_SHA512 = "ECDSA-SHA512"
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Ed25519 = "ED25519"
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)
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// SignatureAlgorithm is the JSON representation of the X509 signature algorithms
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type SignatureAlgorithm x509.SignatureAlgorithm
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// Set sets the signature algorithm in the given certificate.
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func (s SignatureAlgorithm) Set(c *x509.Certificate) {
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c.SignatureAlgorithm = x509.SignatureAlgorithm(s)
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}
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// UnmarshalJSON implements the json.Unmarshal interface and unmarshals a JSON
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// object in the Subject struct or a string as just the subject common name.
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func (s *SignatureAlgorithm) UnmarshalJSON(data []byte) error {
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name, err := unmarshalString(data)
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if err != nil {
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return err
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}
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var sa x509.SignatureAlgorithm
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switch strings.ToUpper(name) {
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case MD2_RSA:
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sa = x509.MD2WithRSA
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case MD5_RSA:
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sa = x509.MD5WithRSA
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case SHA1_RSA:
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sa = x509.SHA1WithRSA
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case SHA256_RSA:
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sa = x509.SHA256WithRSA
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case SHA384_RSA:
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sa = x509.SHA384WithRSA
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case SHA512_RSA:
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sa = x509.SHA512WithRSA
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case SHA256_RSAPSS:
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sa = x509.SHA256WithRSAPSS
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case SHA384_RSAPSS:
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sa = x509.SHA384WithRSAPSS
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case SHA512_RSAPSS:
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sa = x509.SHA512WithRSAPSS
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case DSA_SHA1:
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sa = x509.DSAWithSHA1
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case DSA_SHA256:
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sa = x509.DSAWithSHA256
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case ECDSA_SHA1:
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sa = x509.ECDSAWithSHA1
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case ECDSA_SHA256:
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sa = x509.ECDSAWithSHA256
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case ECDSA_SHA384:
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sa = x509.ECDSAWithSHA384
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case ECDSA_SHA512:
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sa = x509.ECDSAWithSHA512
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case Ed25519:
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sa = x509.PureEd25519
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default:
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return errors.Errorf("unsupported signatureAlgorithm %s", name)
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}
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*s = SignatureAlgorithm(sa)
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return nil
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}
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